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Win KZ, Pimkhaokham A, Kaboosaya B. Comparing Bone Graft Success, Implant Survival Rate, and Marginal Bone Loss: A Retrospective Study on Materials and Influential Factors. J ORAL IMPLANTOL 2024; 50:300-307. [PMID: 38686547 DOI: 10.1563/aaid-joi-d-23-00165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Bone grafting serves to restore the alveolar bone defect, providing adequate alveolar bone essential for long-term implant survival. This retrospective study aimed to evaluate the success rate of guided bone regeneration (GBR) bone grafting and investigate the survival rate of implants and the degree of marginal bone loss (MBL) around implants. Furthermore, the influence of confounding factors such as patient conditions, bone graft properties, and implant characteristics was assessed. This study was carried out on treatment outcomes of patients with implants between January 2007 and December 2016, using various graft materials, including autograft, allograft, and xenograft. In a mean follow-up of 70 months (range: 3-10 years), the overall success rate of bone graft (n = 80) was 100%, and the overall survival rate of implant (n = 107) was 97.2% (autograft: 100%, allograft: 100%, and xenograft: 92.9%; P = .03). Mean MBL up to 3 years after implant installation were similar among graft materials, with 0.84 ± 0.48 mm in autograft, 0.73 ± 0.42 mm in allograft, and 1.01 ± 0.59 mm in xenograft (P = .14). Posterior mandibular location had a significant influence on implant survival (P = .003). A significant association of MBL with several factors, including age >60 years (P = .03), both diabetes and hypertension (P = .02), without receiving adjunctive membrane (P = .04), loading within 3-6 months (P < .001), and screw-retained crown (P = .008), was confirmed. Our data substantiated that implant rehabilitation with GBR using autograft and allograft provides the most predictable results. The factors above should be carefully considered with xenograft to enhance long-term clinical outcomes.
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Affiliation(s)
- Kaung Zaw Win
- Department of Oral and Maxillofacial Surgery, Chulalongkorn University, Thailand
| | - Atiphan Pimkhaokham
- Department of Oral and Maxillofacial Surgery, Chulalongkorn University, Thailand
| | - Boosana Kaboosaya
- Department of Oral and Maxillofacial Surgery, Chulalongkorn University, Thailand
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Found AA, Shah S, Fouda MA, Santos MJMC, Butler S. Survey of screw-retained versus cement-retained implant restorations used in both education and private dental practices. J Dent Educ 2024; 88:1029-1039. [PMID: 38741343 DOI: 10.1002/jdd.13568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 02/14/2024] [Accepted: 03/23/2024] [Indexed: 05/16/2024]
Abstract
AIMS In the literature, it is still unclear if the decisions for selecting the type of implant crown-retaining system are based on scientific-based research or if the Universities' choices, Implant marketing trends, or finances could have a major influence on the private dentists' decisions. OBJECTIVES Therefore, this study aimed to evaluate the crown-retaining system (cement- or screw-retained) used in dental schools and private dental practices. METHODS A 13-item questionnaire was sent to Canadian dental schools (n = 10) and dental offices in London (n = 298), Canada. The questionnaire included demographic questions and questions to reveal the dentists' perspectives on prosthetic implant treatment between the two-retaining systems. Results were analyzed using descriptive statistics and multinomial logistic regression (p = 0.05). RESULTS Twenty-four private dentists and five dental schools responded to the survey - 62.5% of private practitioners and 60% of universities reported using both systems. A trend was observed in using screw-retained systems by dentists who graduated 5-10 years ago. Straumann, Astra, and Nobel Biocare were the private practices and dental schools' preferred implant systems. The use of platform switching for all cases was selected by 54.2% of the private practitioners and 40% of the dental schools. Resin cement was the private practice's preferred cementation method; the dental schools used glass ionomer and zinc phosphate cement. The multinomial logistic regressions showed no statistical difference between the crown-retaining system chosen and the decision factors. The laboratory technician's recommendations and cost influenced the decision-making process for private dentists. For the universities, perio-restorative outcome, implant position, survival rates, institute preferences, and evidence-based research influenced the crown-retaining system's decision-making process. CONCLUSION: The Canadian dental schools and private practice reported using both screw- and cement-retaining systems. However, there was a difference in the selection criteria as the universities showed a tendency towards a more research-based approach in their decision, while for the private practices, the technicians' recommendations and cost played a major role in the decision process. It was noted that the implant systems preconized by the Universities were observed to be used in private practices.
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Affiliation(s)
- Anelyse Arata Found
- Division of Restorative Dentistry, Schulich School of Medicine and Dentistry, Western University, London, Canada
| | - Shivani Shah
- Schulich School of Medicine and Dentistry, Western University, London, Canada
| | - Mohamed A Fouda
- Division of Restorative Dentistry, Schulich School of Medicine and Dentistry, Western University, London, Canada
| | - Maria Jacinta M C Santos
- Division of Restorative Dentistry, Schulich School of Medicine and Dentistry, Western University, London, Canada
| | - Sheila Butler
- Division of Restorative Dentistry, Schulich School of Medicine and Dentistry, Western University, London, Canada
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Diehl D, Bespalov A, Yildiz MS, Friedmann A. Restoration of posterior teeth by narrow diameter implants in hyperglycemic and normoglycemic patients - 4-year results of a case-control study. Clin Oral Investig 2024; 28:392. [PMID: 38907052 PMCID: PMC11192651 DOI: 10.1007/s00784-024-05786-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 06/11/2024] [Indexed: 06/23/2024]
Abstract
OBJECTIVES To investigate the four-year clinical outcome and marginal bone loss around narrow-diameter implants in patients with uncontrolled diabetes mellitus type 2 (T2DM) and normo-glycemic individuals. MATERIALS AND METHODS In 11 T2DM patients with a concentration of glycated hemoglobin (HbA1C) > 6.5% (test group) and 15 normoglycemic patients (HbA1C < 6.0%; control group), one narrow-diameter tissue level implant, placed in the posterior maxilla or mandible, was investigated. The clinical parameters probing depth (PD), bleeding on probing (BOP), attachment loss (CAL), recession, and papilla bleeding index (PBI) were assessed manually after 24 and 48 months of function. The paired digital periapical radiographs were analyzed regarding the change in marginal bone level (MBL) from baseline to 48 months post-op. The technical complications were recorded. RESULTS In the T2DM group, 11 patients were available for follow-ups. The overall implant survival rate after 48 months was 100%. The differences in means for the clinical parameters and the MBL between the T2DM and normo-glycemic patients for the observation period were statistically non-significant. No technical complications were recorded. CONCLUSIONS The study demonstrated an encouraging clinical outcome with ND implants in patients with uncontrolled T2DM compared to non-diabetics after 48 months' post loading. CLINICAL RELEVANCE Patients with HbA1C > 6.5% may benefit from the treatment with narrow-diameter implants by avoiding complex surgical interventions with augmentation procedures. REGISTRATION NUMBER (CLINICALTRIALS.GOV): NCT04630691.
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Affiliation(s)
- Daniel Diehl
- Department of Periodontology, School of Dentistry, Faculty of Health, Witten/, Herdecke University, Alfred-Herrhausen Str. 45, 58455, Witten, Germany.
- Institute of Pharmacology and Toxicology, Center for Biomedical Education and Research (ZBAF), Faculty of Health, Witten/Herdecke University, Stockumer Straße 10, 58453, Witten, Germany.
| | - Angelina Bespalov
- Department of Periodontology, School of Dentistry, Faculty of Health, Witten/, Herdecke University, Alfred-Herrhausen Str. 45, 58455, Witten, Germany
| | - Mehmet Selim Yildiz
- Department of Periodontology, Faculty of Dentistry, Altınbaş University, Zuhuratbaba, İncirli Cd. No:11-A, 34147 Bakırköy, Istanbul, Turkey
| | - Anton Friedmann
- Department of Periodontology, School of Dentistry, Faculty of Health, Witten/, Herdecke University, Alfred-Herrhausen Str. 45, 58455, Witten, Germany
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Wach T, Okulski J, Zieliński R, Trybek G, Michcik A, Kozakiewicz M. New Radiological Corticalization Index as an Indicator of Implant Success Rate Depending on Prosthetic Restoration-5 Years of Follow-Up. Diagnostics (Basel) 2024; 14:867. [PMID: 38732281 PMCID: PMC11083295 DOI: 10.3390/diagnostics14090867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
The new Radiological Corticalization Index (CI) is an indicator that describes bone remodeling near the dental implant's neck at the pixel level and is not visible to the naked eye. The aim of this research was to evaluate the correlation between the CI and bone remodeling using only radiographic (RTG) images. RTG samples were divided into groups depending on prosthetic restoration; the implant neck area around dental implants was examined, and texture features of the RTG images were analyzed. The study also investigated the type of prosthetic restoration and its influence as a factor on bone structure. The statistical analysis included evaluating feature distribution, comparing means (t-test) or medians (W-test), and performing a regression analysis and one-way analysis of variance or the Kruskal-Wallis test, as no normal distribution or between-group variance was indicated for the significant differences in the investigated groups. Differences or relationships were considered statistically significant at p < 0.05. The research revealed correlations between single crowns, overdenture restoration, bridge restoration, platform switching, prosthetic fracture, CI, and also marginal bone loss where p was lower than 0.05. However, the corticalization phenomenon itself has not yet been fully explored. The findings suggest that, depending on the type of prosthetic restoration, the corticalization index may correlate with marginal bone loss or not. Further research is necessary, as the index is suspected to not be homogeneous.
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Affiliation(s)
- Tomasz Wach
- Department of Maxillofacial Surgery, Medical University of Lodz, 113 Żeromskiego Str., 90-549 Lodz, Poland; (J.O.); (R.Z.); (M.K.)
| | - Jakub Okulski
- Department of Maxillofacial Surgery, Medical University of Lodz, 113 Żeromskiego Str., 90-549 Lodz, Poland; (J.O.); (R.Z.); (M.K.)
| | - Rafał Zieliński
- Department of Maxillofacial Surgery, Medical University of Lodz, 113 Żeromskiego Str., 90-549 Lodz, Poland; (J.O.); (R.Z.); (M.K.)
| | - Grzegorz Trybek
- Department of Oral Surgery, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland;
- 4th Military Clinical Hospital in Wroclaw, ul. Rudolfa Weigla 5, 50-981 Wroclaw, Poland
| | - Adam Michcik
- Department of Maxillofacial Surgery, Medical University of Gdansk, Mariana Smoluchowskiego 17, 80-214 Gdansk, Poland;
| | - Marcin Kozakiewicz
- Department of Maxillofacial Surgery, Medical University of Lodz, 113 Żeromskiego Str., 90-549 Lodz, Poland; (J.O.); (R.Z.); (M.K.)
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Yıldız P, Alkan Demetoğlu G, Talay Çevlik E. Effect of cement type on vertical marginal discrepancy and residual excess cement in screwmentable and cementable implant-supported monolithic zirconia crowns. Odontology 2024:10.1007/s10266-024-00938-w. [PMID: 38634968 DOI: 10.1007/s10266-024-00938-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
The purpose of this study was to investigate the vertical marginal discrepancy (VMD) and residual excess cement (REC) of cementable and screwmentable monolithic zirconia crowns cemented with different types of cement. Abutments were attached to 40 implant analogues. Crowns were created using computer-aided design/computer-aided manufacturing technology from monolithic zirconia blocks, either with or without a screw access hole (SAC). Crowns created both ways were split into two groups and cemented with resin and zinc polycarboxylate cement under a 5-kg weight. VMD and REC values were evaluated using an X20 zoom stereomicroscope. Data were analysed using two-way ANOVA and the Bonferroni test. According to the two-way ANOVA results, REC measurements differed significantly in the crown design and cement groups. However, whilst VMD values were significantly different in both crown design groups, there was no significant difference in the cement groups. According to the Bonferroni test results, the highest REC (157.241 ± 44.29 µm) and VMD (68.052 ± 16.19 µm) values were found in the crowns without SAC and cemented with zinc polycarboxylate. Screwmentable crowns are more effective than cementable crowns in reducing REC and VMD. Whilst polycarboxylate cement reduces VMD in screwmentable crowns, resin cement is more suitable for cementable crowns.
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Affiliation(s)
- Pınar Yıldız
- Nimet Bayraktar Oral and Dental Health Center, Hürriyet Mah. Kılıçkaya Cad., Kayseri, Türkiye.
| | - Göknil Alkan Demetoğlu
- Department of Prosthodontics, Faculty of Dentistry, Aydın Adnan Menderes University, Hasanefendi Mahallesi, Hastane Cd. No:1, Aydın, Türkiye
| | - Esra Talay Çevlik
- Department of Prosthodontics, Faculty of Dentistry, Aydın Adnan Menderes University, Hasanefendi Mahallesi, Hastane Cd. No:1, Aydın, Türkiye
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Reary JA, Katsavochristou A, Powers JM, Kiat-Amnuay S. Effect of surface pretreatment and artificial aging on the retention of lithium disilicate crowns cemented to zirconia implant abutments. J Prosthet Dent 2024; 131:459-467. [PMID: 35513920 DOI: 10.1016/j.prosdent.2022.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 11/21/2022]
Abstract
STATEMENT OF PROBLEM Recent advancements in restorative dentistry have seen an increase in the use of ceramic restorations and zirconia implant abutments. However, how the pretreatment of a zirconia abutment and different artificial aging protocols affect the bond strength of a cemented, monolithic lithium disilicate crown is unclear. PURPOSE The purpose of this in vitro study was to evaluate the effect of surface pretreatment on the retentive strength of milled lithium disilicate crowns bonded to custom zirconia implant abutments with different resin cements after thermocycling and long-term aging. MATERIAL AND METHODS A total of 144 crowns (n=8) were milled and bonded to 144 abutments. In the experimental groups, 72 abutments were airborne-particle abraded with 50-μm aluminum oxide before bonding. All specimens were stored at 37 °C in 100% humidity for 24 hours. Forty-eight specimens were subjected to thermocycling, and another 48 were subjected to aging for 6 months. Retentive strength was measured by using a pull-off test with a universal testing machine. Retentive strength values were calculated and compared with 3-way analysis of variance and a Tukey-Kramer post hoc test (α=.05). RESULTS In the 24-hour aging group, retention for all experimental groups was significantly higher (P<.05) than for the control group, except for Panavia 21 with Clearfil Ceramic Primer. In the thermocycling and long-term aging groups, all cements in the experimental group displayed significantly higher retention than the control. The airborne-particle abrasion of custom zirconia implant abutments with 50-μm aluminum oxide before bonding to lithium disilicate crowns significantly increased the bond strength of the Multilink Hybrid Abutment with Monobond Plus and RelyX Ultimate with Scotchbond Universal cements after 24-hour aging, but not of Panavia 21 with Clearfil Ceramic Primer. CONCLUSIONS Airborne-particle abrasion significantly increased the bond strength of all 3 cements after thermocycling and long-term aging.
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Affiliation(s)
- Juston A Reary
- Private practice and Former Graduate Prosthodontics Resident, Department of Prosthodontics, Michael E DeBakey Veterans Affairs Medical Center and University of Texas Health Science Center at Houston School of Dentistry, Houston, Texas
| | - Anastasia Katsavochristou
- Assistant Professor, Division of Prosthodontics, University of Kentucky College of Dentistry, Lexington, Kentucky
| | - John M Powers
- Professor Emeritus, Department of Restorative Dentistry and Prosthodontics, University of Texas Health Science Center at Houston School of Dentistry, Houston, Texas
| | - Sudarat Kiat-Amnuay
- Professor, Department of General Practice and Dental Public Health, University of Texas Health Science Center at Houston School of Dentistry, Houston, Texas; Section Head, Houston Center for Biomaterials and Biomimetics, University of Texas Health Science Center at Houston School of Dentistry, Houston, Texas.
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Gelfan O, Nissan J, Shely A, Ben-Izhack G, Chaushu L, Sharon E, Glikman A, Zenziper E, Rosner O. Analysis of Strain Distribution in Common Clinical Designs of Posterior Implant-Supported Fixed Partial Restorations: Comparison between Six Configurations. J Funct Biomater 2024; 15:47. [PMID: 38391900 PMCID: PMC10889441 DOI: 10.3390/jfb15020047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/11/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024] Open
Abstract
The configuration of implant-supported prostheses is considered to influence the magnitude of stress concentrations, affecting their survival rate. The purpose of this study is to determine, through strain gauge measurements during load application, the dispersion and magnitude of strain concentrations in different implant-supported prosthesis designs. All designs matched those commonly used in posterior partially edentulous states. Three implants were inserted into an epoxy resin model (PLM-4B Vishay Measurements Group Inc., Raleigh, NC, USA), allowing for the delivery of three- and four-unit crowns in different cemented configurations. Loads were applied at vertical and oblique directions over the cast crowns in six different configurations representing various posterior partially edentulous restorations. The readings from the strain gauges adhered to the implant necks' presented data on implant strain. Prostheses including cantilevers showed the highest strain among the three-unit prostheses within the prosthetic complex, and three single units showed the least (8133 µs vs. 201 µs, respectively). Angulated load application also had a role in amplifying the strains recorded, resulting in total strains of between 3.5 and 20 times higher than during vertical loading in all configurations. It can be concluded that the configuration of implant-fixed partial prosthesis changes the loads engaging the restoration, the implant, and, probably, the supporting bone.
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Affiliation(s)
- Oded Gelfan
- Department of Prosthetic Dentistry, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Joseph Nissan
- Department of Prosthetic Dentistry, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Asaf Shely
- Department of Prosthetic Dentistry, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Gil Ben-Izhack
- Department of Prosthetic Dentistry, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Liat Chaushu
- Department of Peridontology, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Esi Sharon
- Department of Prosthodontics, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Ari Glikman
- Department of Prosthetic Dentistry, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Eran Zenziper
- Department of Prosthetic Dentistry, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Ofir Rosner
- Department of Prosthetic Dentistry, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
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Al-Juboori MJ, Al-Attas MA, Minichetti J, Akhikar J. The Use of Splinted Versus Nonsplinted Prosthetic Design in Dental Implants: A Literature Review. J ORAL IMPLANTOL 2024; 50:50-64. [PMID: 38329841 DOI: 10.1563/aaid-joi-d-23-00077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
The choice of a splinted or nonsplinted implant-supported prosthesis should be based on solid scientific evidence that considers the conditions and needs of each patient. This review elaborates on the factors that directly influence clinical decisions between splinted or nonsplinted dental implants. Digital and manual searches of the published literature were conducted to identify studies that examined splinted prostheses (SPs) and nonsplinted prostheses (NSPs). The search terms used, alone or in combination, were "splinting prosthesis," "nonsplinting prosthesis," "prosthetic design," "stress distribution in dental implant," "implant loading," "implant occlusion," and "crestal bone resorption." Ninety-four studies were selected to compare and address the details emphasized in this study. Thirty-four reported articles were not directly related to restoration design but were reviewed to better understand the influence of mechanical risk factors, finite element analysis limits, and criteria for implant survival and treatment success. There are advantages and disadvantages of splinting implants together. NSPs are the ideal choice because they resemble natural teeth. Splinting a restored implant will cause the implant to appear as part of one unit and is indicated in more compromised situations, unfavorable conditions, or when pontic spaces and cantilevers are needed in implant prostheses.
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Affiliation(s)
| | | | - John Minichetti
- Department of Dentistry, Englewood Hospital, Englewood, NJ, USA
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Zhang M, Ho DKL, Pelekos G, Fok MR. Clinical performance of implant-supported single hybrid abutment crown restoration: A systematic review and meta-analysis. J Prosthodont Res 2024; 68:63-77. [PMID: 37316260 DOI: 10.2186/jpr.jpr_d_22_00279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
PURPOSE To investigate survival rates and technical and biological complications of one-piece screw-retained hybrid abutments in implant-supported single crowns (SCs). STUDY SELECTION An electronic search was performed on five databases for clinical studies involving implant-supported single hybrid abutment crowns constructed using titanium-base (Ti base) abutments, with at least 12 months of follow-up. The RoB 2, Robins-I, and JBI tools were used to assess the risk of bias for the different study types. Success, survival, and complication rates were calculated, and a meta-analysis was performed to obtain a pooled estimate. Peri-implant health parameters were extracted and analyzed. RESULTS 22 records (20 studies) were included in this analysis. Direct comparisons between screw-retained hybrid abutment SCs and cemented SCs showed no significant differences in the 1-year survival and success rates. For SCs using a hybrid abutment crown design, their 1-year survival rate was 100% (95% CI: 100%-100%, I2 = 0.0%, P = 0.984), and a success rate of 99% (95% CI: 97%-100%, I2 = 50.3%, P = 0.023) was calculated. No confounding variables significantly affected the estimates. The individual technical complication rate was low at 1-year follow-up. The estimated incidence of all types of complications in hybrid abutment SCs is less than 1%. CONCLUSIONS Within the limitations of this study, implant-supported SCs using a hybrid abutment crown design showed favorable short-term clinical outcomes. Additional well-designed clinical trials with at least a 5-year observation period are required to confirm their long-term clinical performance.
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Affiliation(s)
- Mengze Zhang
- Division of Periodontology and Implant Dentistry, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Dominic King Lun Ho
- Division of Periodontology and Implant Dentistry, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - George Pelekos
- Division of Periodontology and Implant Dentistry, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Melissa Rachel Fok
- Division of Periodontology and Implant Dentistry, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
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Kan JYK, Rungcharassaeng K, Kamolroongwarakul P, Lin GH, Matsuda H, Yin S, Wang HL, Tarnow D, Lozada JL. Frequency of screw-retained angulated screw channel single crown following immediate implant placement and provisionalization in the esthetic zone: A cone beam computed tomography study. Clin Implant Dent Relat Res 2023; 25:789-794. [PMID: 37232408 DOI: 10.1111/cid.13227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 04/10/2023] [Accepted: 05/14/2023] [Indexed: 05/27/2023]
Abstract
OBJECTIVE The purpose of this cone beam computed tomography (CBCT) study was to determine the frequency percentage of screw-retained crown using angulated screw channel (ASC) abutment for single immediate implant placement and provisionalization (IIPP) in the esthetic zone. METHODS The CBCT images of 200 patients without disease and without metal restorations in maxillary anterior teeth were evaluated. The mid-sagittal-sectional CBCT images of maxillary anterior teeth (#6-#11) were created in an implant planning software, screen-captured, and transferred to a presentation program. Template of tapered implants with diameter of 3.5 mm (for central and lateral incisors) and 4.3 mm (for central incisors and canines) and lengths of 13, 15, and 18 mm were applied to the sagittal images to identify the IIPP cases. To qualify for IIPP, the implant must engage >35% bone with at least 1 mm of surrounding bone and no perforations. The IIPP cases were further divided into straight screw channel (IIPPSSC) abutment or 25-degree angulated screw channel abutment (IIPPASC), based upon its restorability. The frequency percentages of possible IIPP, IIPPSSC, and IIPPASC were reported and compared among all maxillary anterior teeth. RESULTS A total of 1200 maxillary anterior teeth sagittal images from 200 patients (88 male and 112 female) with a mean age of 51.3 years (range 20-83 years) were evaluated in this study. The overall frequency percentages of IIPP, IIPPSSC, and IIPPASC possibility were 84% (74%-92%), 14% (10%-24%), and 75% (66%-87%), respectively. CONCLUSION Within the limitations of this CBCT study, 90% of single IIPP in the esthetic zone can be restored with screw-retained crown when utilizing ASC. In addition, the possibility of using a screw-retained restoration following IIPP increases about five times with ASC abutment compared to the SSC abutment.
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Affiliation(s)
- Joseph Y K Kan
- Advanced Education in Implant Dentistry, Loma Linda University School of Dentistry, Loma Linda, California, USA
| | - Kitichai Rungcharassaeng
- Department of Orthodontics and Dentofacial Orthopedics, Loma Linda University School of Dentistry, Loma Linda, California, USA
| | - Pongrapee Kamolroongwarakul
- Advanced Education in Implant Dentistry, Loma Linda University School of Dentistry, Loma Linda, California, USA
- Dental Center, Phyathai Hospital, Bangkok, Thailand
| | - Guo-Hao Lin
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, California, USA
| | - Hiroyuki Matsuda
- Advanced Education in Implant Dentistry, Loma Linda University School of Dentistry, Loma Linda, California, USA
- Private Practice, Chiba, Japan
| | - Shi Yin
- Advanced Education in Periodontics, Loma Linda University School of Dentistry, Loma Linda, California, USA
| | - Hom-Lay Wang
- Department of Periodontics & Oral Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Dennis Tarnow
- Department of Periodontology, Columbia College of Dental Medicine, New York City, New York, USA
| | - Jaime L Lozada
- Advanced Education in Implant Dentistry, Loma Linda University School of Dentistry, Loma Linda, California, USA
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Chantler JGM, Evans CDJ, Zitzmann NU, Derksen W. Clinical performance of single implant prostheses restored using titanium base abutments: A systematic review and meta-analysis. Clin Oral Implants Res 2023; 34 Suppl 26:64-85. [PMID: 37750524 DOI: 10.1111/clr.14128] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 06/16/2023] [Accepted: 06/21/2023] [Indexed: 09/27/2023]
Abstract
PURPOSE The aim of this review was to evaluate the survival rates of restorations utilizing titanium base abutments (TBA) for restoring single-unit implant prostheses. MATERIALS AND METHODS This review was conducted following the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. The focus question was: In patients who require the restoration of a single dental implant utilizing a titanium base abutment, what are the determining factors and outcomes relating to implant prosthesis prognosis and survival? A comprehensive search of databases (PubMed, EMBASE, and Cochrane Library) was conducted on 16 April 2023 and updated on 5 May 2023. Randomized clinical trials (RCT), retrospective studies and prospective studies, reporting on the use of TBA for single implant prostheses, were reviewed. A Cochrane collaboration risk of bias assessment analysis was performed for randomized clinical studies, and the Newcastle-Ottawa Scale tool was applied for non-randomized studies. A meta-analysis was performed on clinical trials reporting on survival rates of both TBA and other abutments. Other clinical studies, reporting on TBA only, were included for descriptive statistics. RESULTS The search provided 1159 titles after duplicates were removed. Six RCTs were included to perform a meta-analysis and compare the survival of the TBA to other abutments [OR 0.74; 95% CI: 0.21-2.63, heterogeneity; I2 0%; p = .99]. Twenty-three prospective and retrospective studies fulfilled the criteria and were included in the meta-analysis after 12 months of function. A total of 857 single implant-supported prostheses fabricated with a TBA were included. TBA abutments have an estimate 98.6% survival rate after 1 year in function (95% CI: 97.9%-99.4%). The mean follow-up period was 31.2 ± 16.9 months. CONCLUSIONS Single implant prosthesis restored with titanium base abutments showed favourable short-term survival rates.
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Affiliation(s)
| | | | - Nicola U Zitzmann
- Department of Reconstructive Dentistry, University of Basel, Basel, Switzerland
| | - Wiebe Derksen
- Department of Oral Implantology and Prosthetic Dentistry, Amsterdam, Netherlands
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12
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Cheng YC, Perpetuini P, Murcko L, Hirayama M, Morgan K, Marincola M, Bonfante EA, Bergamo ETP, Ewers R. Fiber-reinforced composite full-arch prosthetic reconstructions supported by three standard, short or extra-short implants: a two-center retrospective study. Clin Oral Investig 2023; 27:4191-4203. [PMID: 37140762 DOI: 10.1007/s00784-023-05035-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 04/19/2023] [Indexed: 05/05/2023]
Abstract
OBJECTIVES To evaluate the survival of implants and prostheses, and marginal bone level of fiber-reinforced composite implant supported fixed complete prostheses supported by 3 implants. MATERIALS AND METHODS Patients with fiber-reinforced composite fixed prostheses supported by 3 standard-length, short or extra-short implants were included in this retrospective cohort study. Kaplan-Meier survival was computed for implants and prostheses. Univariate and multivariate Cox proportional hazard regressions, clustered by patient, were used to analyze bone level differences as a function of different study covariates. Linear regressions were used to investigate the relationship between distal extension lengths and bone levels. RESULTS Forty-five patients with 138 implants were followed for up to 10 years after prosthesis insertion (mean 52.8; SD 20.5 months). Kaplan-Meier survival analysis showed overall survival rates of 96.5% for implants and of 97.8% for prostheses. The 10-year success rate for prostheses was 90.8%. Extra-short implants survived at similar rates to short and standard implants. Marginal bone levels surrounding implants remained stable over time, even showing slight bone gain on average (mean + 0.1 mm/year; SD ± 0.5 mm/year) Acrylic denture teeth, overdentures on the opposing arch, and implant placement in the posterior maxilla were correlated with bone gain. Screw retention, opposed to telescopic retention, was correlated with bone loss. Longer distal extensions were correlated with bone gain on the implants closest to the distal extensions. CONCLUSIONS Fiber-reinforced composite fixed prostheses supported by only 3 implants, most of which were extra-short, presented high survival rates with stable bone levels. CLINICAL RELEVANCE An encouraging prognosis can be expected for restoration of atrophic maxillary and mandibular arches, when restored with fixed fiber-reinforced composite frameworks with long distal extensions and supported on only 3 short implants.
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Affiliation(s)
- Yu-Chi Cheng
- Harvard School of Dental Medicine, Boston, MA, USA
| | - Paolo Perpetuini
- Private Practice Laboratorio Odontotechnico, Cisterna Di Latina, Italy
| | - Laura Murcko
- Private Practice Implant Dentistry Centre, Boston, MA, USA
| | | | | | - Mauro Marincola
- Department of Oral Surgery, University of Cartagena, Cartagena, Colombia
| | - Estevam A Bonfante
- Department of Prosthodontics and Periodontology, University of Sao Paulo - Bauru School of Dentistry (FOB-USP), 9-75 Octavio Pinheiro Brizolla, Bauru, SP, 17012-901, Brazil
| | - Edmara T P Bergamo
- Department of Prosthodontics and Periodontology, University of Sao Paulo - Bauru School of Dentistry (FOB-USP), 9-75 Octavio Pinheiro Brizolla, Bauru, SP, 17012-901, Brazil.
| | - Rolf Ewers
- Department of Oral Surgery, University Hospital for Cranio-Maxillofacial and Oral Surgery and Cranio-Maxillofacial Institute Vienna (CMF), Vienna, Austria
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13
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Sáenz-Ravello G, Ossandón-Zúñiga B, Muñoz-Meza V, Mora-Ferraro D, Baeza M, Fan S, Sagheb K, Schiegnitz E, Díaz L. Short implants compared to regular dental implants after bone augmentation in the atrophic posterior mandible: umbrella review and meta-analysis of success outcomes. Int J Implant Dent 2023; 9:18. [PMID: 37400739 DOI: 10.1186/s40729-023-00476-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 04/28/2023] [Indexed: 07/05/2023] Open
Abstract
PURPOSE To assess the body of evidence of short versus regular implants after bone augmentation (BA) in the atrophic posterior mandible in the context of implant treatment success outcomes. METHODS Seven databases, two registries, and reference lists were searched for systematic reviews and meta-analysis (SR/MA), randomized controlled trials (RCTs) and longitudinal studies published in English, Spanish or German since 2012. Confidence in the SR/MA methodology was evaluated using AMSTAR-2 and the risk of bias of primary studies using Cochrane's RoB 2.0 and ROBINS-I. A random-effects meta-analysis and a meta-regression were performed for continuous and dichotomous outcomes. GRADE approach was used to assess the certainty of the evidence. RESULTS Eighteen SRs/MAs, most of them "critically low" and "low" confidence with substantial overlap, included 14 relevant RCTs with a high risk of bias. A cohort study with moderate risk of bias was added. Quantitative synthesis of 595 implants and 281 hemiarches/patients indicates that the use of short implants (< 10 mm) compared to regular implants and BA may reduce implant failure at 1-year follow-up, and marginal bone loss (MBL) at 3-, 5-, and 8-year follow-up; is likely to reduce the risk of biological complications at 1-, 3-, 5-, and 8-year follow-up; and may be the patient's preferred alternative. There is a correlation between bone height, MBL and biological complications. CONCLUSIONS The available evidence partially suggests that the use of short implants could decrease implant failure, MBL, and biological complications, and increase patient satisfaction. However, given the need for further RCTs and real-world evidence to fully evaluate short- and long-term outcomes, it would be prudent for clinicians to carefully consider the individual needs and circumstances of the patients before deciding whether to use short implants. Trial registration PROSPERO CRD42022333526.
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Affiliation(s)
- Gustavo Sáenz-Ravello
- Faculty of Dentistry, Center for Epidemiology and Surveillance of Oral Diseases, University of Chile, Santiago, Chile
| | | | | | | | - Mauricio Baeza
- Faculty of Dentistry, Center for Epidemiology and Surveillance of Oral Diseases, University of Chile, Santiago, Chile
| | - Shengchi Fan
- Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes-Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany
| | - Keyvan Sagheb
- Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes-Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany
| | - Eik Schiegnitz
- Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes-Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany
| | - Leonardo Díaz
- Faculty of Dentistry, Postgraduate School, University of Chile, Santiago, Chile.
- Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes-Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany.
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14
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Varshney N, Kusum CK, Trivedi A, Kaushik M, Dubey P, Bali Y. Comparative evaluation of biological, mechanical, and patient-reported outcomes of angulated screw channel abutments versus multi-unit abutment-retained single-unit implant restorations in the anterior esthetic zone: An- in vivo study. J Indian Prosthodont Soc 2023; 23:244-252. [PMID: 37929363 PMCID: PMC10467320 DOI: 10.4103/jips.jips_101_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 11/07/2023] Open
Abstract
Aims The study aimed to evaluate biological, mechanical, and patient reported parameters associated with ASC abutments and MU abutments for the fabrication of screw retained implant crowns in the anterior esthetic zone. Setting and Design For the study, 20 patients were selected and implants were placed within the constraints of prosthetic envelope. Later, the screw retained crown was fabricated. Materials and Methods Biological parameters (including implant survival rate, marginal bone levels using cone beam computed tomography, and soft tissue assessment using periodontal indices) were measured at the time of crown placement and 1 year follow up. Mechanical parameter (screw loosening) was calculated using removal torque loss (RTL) values obtained at the time of crown placement and 1 year follow up. Patient reported parameters were evaluated using a questionnaire at 1 year follow up. Statistical Analysis Used All data were tabulated, statistically analyzed, and compared using SPSS version 23 IBM Corporation, Armonk, NY, USA. Results Implant survival was found 100% in both the groups. The marginal bone level reduced considerably in both the groups from baseline to 1 year follow up. The MU abutment group had slightly less marginal bone loss than the ASC abutment group. Additionally, there was no statistically significant difference between the two groups' periodontal indices at baseline and 1-year follow-up values. At baseline, the RTL value was substantially lower (P <0.003) in the ASC abutment group than in the MU abutment group, however at the 1-year follow-up, there was no statistically significant difference in RTL or screw loosening between the two groups. Patient-reported data showed no statistically significant difference. Conclusion Within the constraints of this study, it was suggested that both ASC and MU abutments provide equally promising results in terms of biological, mechanical, and patient-reported parameters in the anterior esthetic region for single screw-retained crowns.
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Affiliation(s)
- Niyati Varshney
- Department of Prosthodontics and Crown and Bridge, Subharti Dental College and Hospital, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India
| | - Chandan Kumar Kusum
- Department of Prosthodontics and Crown and Bridge, Subharti Dental College and Hospital, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India
| | - Anshul Trivedi
- Department of Prosthodontics and Crown and Bridge, Subharti Dental College and Hospital, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India
| | - Mayur Kaushik
- Department of Periodontology, Subharti Dental College and Hospital, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India
| | - Prajesh Dubey
- Department of Oral and Maxillofacial Surgery, Subharti Dental College and Hospital, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India
| | - Yashika Bali
- Department of Prosthodontics and Crown and Bridge, Subharti Dental College and Hospital, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India
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15
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Roccuzzo A, Imber JC, Salvi GE, Roccuzzo M. Peri-implantitis as the consequence of errors in implant therapy. Periodontol 2000 2023; 92:350-361. [PMID: 36744582 DOI: 10.1111/prd.12482] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 09/04/2022] [Accepted: 12/22/2022] [Indexed: 02/07/2023]
Abstract
Peri-implantitis is a plaque-associated pathologic condition occurring in tissues around dental implants, characterized by inflammation in the peri-implant mucosa and subsequent progressive loss of supporting bone. It is a highly prevalent disease, as extensively estimated by large-population, cross-sectional studies. As peri-implant diseases represent opportunistic infections, it is reasonable to assume that nonideal conditions, local and/or general, may favor the progression of peri-implant inflammation. Some of these conditions could be a result of poor planning and/or inadequate execution of any step of the entire process treatment. This article describes the major possible factors in implant therapy that may lead to peri-implantitis. For some of these (ie, inappropriate patient selection, insufficient periodontal therapy, lack of diagnosis and management of peri-implant mucositis, erratic supportive peri-implant/periodontal therapy) there is a good level of evidence, whereas for others (ie, wrong implant placement, poor postoperative care, inadequate prosthetic reconstruction, lack of assessment and management of peri-implant soft-tissue deficiencies) there is little scientific evidence. More research is therefore needed to clearly identify the errors and/or complications possibly leading to peri-implantitis, particularly over the long term.
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Affiliation(s)
- Andrea Roccuzzo
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Department of Oral and Maxillo-Facial Surgery, Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark
| | - Jean-Claude Imber
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Giovanni Edoardo Salvi
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Mario Roccuzzo
- Specialist Periodontal Private Practice, Torino, Italy
- Division of Maxillo-facial Surgery, University of Torino, Torino, Italy
- Department of Periodontics and Oral Medicine, University of Michigan, Ann Arbor, Michigan, USA
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16
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Zadrożny Ł, Górski B, Baldoni E, Lumbau AI, Meloni SM, Pisano M, Tallarico M. Minimally Invasive Treatment of Lateral Incisors with Guided One-Piece or Two-Piece Titanium-Made Narrow Diameter Implants: A Retrospective Comparative Study with Up to Two Years Follow-Up. J Clin Med 2023; 12:jcm12113711. [PMID: 37297907 DOI: 10.3390/jcm12113711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/17/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
Restoring teeth with dental implants has become the gold standard in recent years, especially in the esthetic zone. However, limited amount of available bone as well as limited interdental space in the anterior zone may create problems for implant treatment. Narrow diameter implants (NDI) may be a treatment option to resolve the above-mentioned limitations and providing minimally invasive implant therapy without additional regenerative procedures. In this retrospective study, a comparison of clinical and radiographic outcomes between one-piece and two-piece titanium-made NDIs was done with the follow-up of two years after loading. Twenty-three NDI cases were analyzed, 11 in the one-piece implant group (group one) and 12 in the two-piece implant group (group two). The outcomes were implant and prosthetic failures, any complications occurred, peri-implant bone level changes, and as well as the Pink Esthetic score. No implant or prosthetic failures, as well as, no complications were reported at the two-year follow-up examination. At the same time the marginal bone loss was 0.23 ± 0.11 in the group one and 0.18 ± 0.12 in the group two. Difference was not statistically significant (p = 0.3339). The Pink Esthetic Score, recorded two years after definitive loading, was 12.6 ± 0.97 in the group one and 12.2 ± 0.92 in the group two, with no statistically significant difference between groups (p = 0.3554). With the limitations of the present study, including the small sample size and short follow-up, it is possible to conclude that either one and two-piece NDI can be successfully used to restore lateral incisors with comparable results within the two years of follow-up.
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Affiliation(s)
- Łukasz Zadrożny
- Department of Dental Propaedeutics and Prophylaxis, Medical University of Warsaw, Nowogrodzka 59 St., 02-006 Warsaw, Poland
| | - Bartłomiej Górski
- Department of Periodontology and Oral Mucosa Diseases, Medical University of Warsaw, Binieckiego 6 St., 02-097 Warsaw, Poland
| | - Edoardo Baldoni
- Department of Medicine, Surgery, and Pharmacy, University of Sassari, 07021 Sassari, Italy
| | | | - Silvio Mario Meloni
- Department of Medicine, Surgery, and Pharmacy, University of Sassari, 07021 Sassari, Italy
| | - Milena Pisano
- Department of Medicine, Surgery, and Pharmacy, University of Sassari, 07021 Sassari, Italy
| | - Marco Tallarico
- Department of Medicine, Surgery, and Pharmacy, University of Sassari, 07021 Sassari, Italy
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17
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Lemos CAA, de Oliveira AS, Faé DS, Oliveira HFFE, Del Rei Daltro Rosa CD, Bento VAA, Verri FR, Pellizzer EP. Do dental implants placed in patients with osteoporosis have higher risks of failure and marginal bone loss compared to those in healthy patients? A systematic review with meta-analysis. Clin Oral Investig 2023:10.1007/s00784-023-05005-2. [PMID: 37043030 DOI: 10.1007/s00784-023-05005-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 03/28/2023] [Indexed: 04/13/2023]
Abstract
PURPOSE This systematic review and meta-analysis aimed to compare the dental implant survival rate and marginal bone loss between patients with and without osteoporosis. MATERIALS AND METHODS This systematic review was registered in PROSPERO (CRD42022356377). A systematic search was performed using five databases: MEDLINE/PubMed, Web of Science, Scopus, Embase, and ProQuest for articles published up to July 2022. Additional searches in ClinicalTrials.gov and the reference lists of included studies were performed. The eligibility criteria comprised observational studies with a direct comparison between patients with and without osteoporosis, with a minimum follow-up of 1 year and 10 implants placed in each group, which consider data analysis based on implant level, without restrictions on period or language of publication. The meta-analysis was performed using RevMan 5.4 program. Risk of bias analysis of the included studies was performed using the Newcastle-Ottawa scale (NOS). RESULTS Twelve studies met the eligibility criteria, totaling 1132 patients with a mean age range from 54 to 76.6 years. Most of the included patients were women (73.6%). A total of 3505 implants were evaluated-983 in patients with osteoporosis and 2522 in patients without osteoporosis. The meta-analysis indicated no difference in implant survival rates between patients with and without osteoporosis (OR, 1.78; 95% confidence interval [CI], 0.86-3.70; P = 0.12). However, significant bone loss was observed around dental implants placed in patients with osteoporosis (SMD, 0.71 mm; 95% CI, 0.06-0.87 mm). The NOS indicated a low risk of bias in the studies included. However, the certainty of the evidence was classified as very low and low for implant survival rates and bone loss, respectively. CONCLUSION According to the limitations of the present review, the data suggest that dental implants are a viable treatment option for the rehabilitation of patients with osteoporosis. However, clinical care by professionals is necessary to ensure the maintenance of peri-implant bone stability, as these patients may be susceptible to increased bone loss.
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Affiliation(s)
- Cleidiel Aparecido Araujo Lemos
- Department of Dentistry, Federal University of Juiz de Fora (UFJF), Campus Avançado Governador Valadares, Governador Valadares, Minas Gerais, Brazil.
| | - Andreza Soares de Oliveira
- Department of Dentistry, Federal University of Juiz de Fora (UFJF), Campus Avançado Governador Valadares, Governador Valadares, Minas Gerais, Brazil
| | - Daniele Sorgatto Faé
- Postgraduate Program in Applied Health Sciences (PPGCAS), Federal University of Juiz de Fora (UFJF), Campus Avançado Governador Valadares, Governador Valadares, Minas Gerais, Brazil
| | | | - Cleber Davi Del Rei Daltro Rosa
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP-Univ Estadual Paulista, Araçatuba, SP, Brazil
| | - Victor Augusto Alves Bento
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP-Univ Estadual Paulista, Araçatuba, SP, Brazil
| | - Fellippo Ramos Verri
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP-Univ Estadual Paulista, Araçatuba, SP, Brazil
| | - Eduardo Piza Pellizzer
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP-Univ Estadual Paulista, Araçatuba, SP, Brazil
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18
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Korello K, Eickholz P, Zuhr O, Ratka C, Petsos H. In vitro efficacy of non-surgical and surgical implant surface decontamination methods in three different defect configurations in the presence or absence of a suprastructure. Clin Implant Dent Relat Res 2023. [PMID: 36918345 DOI: 10.1111/cid.13198] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/30/2023] [Accepted: 02/22/2023] [Indexed: 03/15/2023]
Abstract
OBJECTIVES Analysis of the in vitro efficacy of non-surgical and surgical dental implant surface decontamination with or without suprastructure. MATERIALS AND METHODS Three hundred and sixty implants were dipped in indelible red and distributed to 30°, 60°, or 90° angulated bone defect models. One hundred and twenty implants were used for each bone defect, 40 of which were assigned to a decontamination method (CUR: curette; SOSC: soundscaler; APA: air powder abrasion). Of these, 20 were subjected to a simulated non-surgical (NST) or surgical treatment (ST), with/without mucosa mask, of which 10 were carried out with (S+) or without (S-) suprastructure. Uncleaned implant surface was assessed by both-sided implant surface photography. Surface morphology changes were analyzed using scanning electron microscopy (SEM). RESULTS Cleaning efficacy was significantly better within NST if the suprastructure was removed (p < 0.001). No significant difference was found within ST (p = 0.304). Overall, cleaning efficacy in the order APA > SOSC>CUR decreased significantly (p < 0.0001) for both S+ and S- in NST as well as ST. Separated by NST/ST, S+/S-, defect angulation and decontamination method, only isolated significant differences in cleaning efficacy were present. Linear regression analysis revealed significant associations of remnants with the treatment approach, decontamination method, and defect angle (p < 0.0001). SEM micrographs showed serious surface damage after use of CUR and SOSC. CONCLUSIONS Suprastructure removal is an additional option to improve cleaning efficacy of non-surgical implant surface decontamination in this in vitro model.
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Affiliation(s)
- Katharina Korello
- Department of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt, Frankfurt, Germany.,Private Practice, Frankfurt, Germany
| | - Peter Eickholz
- Department of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt, Frankfurt, Germany
| | - Otto Zuhr
- Department of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt, Frankfurt, Germany.,Private Practice, Munich, Germany
| | | | - Hari Petsos
- Department of Periodontology, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University Frankfurt, Frankfurt, Germany.,Private Practice, Butzbach, Germany
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19
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Revilla-León M, Yilmaz B, Kois JC, Att W. Prevention of peri-implant disease in edentulous patients with fixed implant rehabilitations. Clin Implant Dent Relat Res 2023. [PMID: 36707075 DOI: 10.1111/cid.13182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/07/2023] [Indexed: 01/29/2023]
Abstract
OBJECTIVES To provide an overview about the current approaches to prevent peri-implant diseases in edentulous patients with complete-arch implant-supported prostheses, and to review the clinical applications of the latest digital technologies for implant prosthodontics. METHODS A review of the guidelines to prevent peri-implant diseases in patient's receiving complete-arch implant-supported prostheses including facially driven treatment planning procedures using either conventional or digital methods, computer-aided implant planning procedures, and prosthodontic design variables including the optimal number and distribution of dental implants, implant to abutment connection type, implant or abutment level design, screw- or cement-retained alternatives, prostheses contours, and material selection is provided. Furthermore, an outline of the current therapeutic management approaches to address peri-implant diseases is reviewed. CONCLUSIONS Clinicians should understand and know different planning and design-related variables that can affect biological and mechanical complication rates of complete-arch implant-supported prostheses. Maintenance protocols are fundamental for minimizing biological and mechanical complications.
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Affiliation(s)
- Marta Revilla-León
- Graduate Prosthodontics, Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, Washington, USA.,Kois Center, Seattle, Washington, USA.,Department of Prosthodontics, Tufts University, Boston, Massachusetts, USA
| | - Burak Yilmaz
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland.,Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland.,Division of Restorative and Prosthetic Dentistry, The Ohio State University, Columbus, Ohio, USA
| | - John C Kois
- Kois Center, Seattle, Washington, USA.,Graduate Prosthodontics, Department of Restorative Dentistry, University of Washington, Seattle, Washington, USA.,Private Practice, Seattle, Washington, USA
| | - Wael Att
- Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Massachusetts, USA
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20
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Tabrizi R, Rasaei M, Moslemi H, Shafiei S, Latifi F. Does Bruxism Affect Marginal Bone Level around Single Tooth Implants in the Posterior Mandible? J Maxillofac Oral Surg 2022; 21:1162-1167. [PMID: 36896080 PMCID: PMC9989056 DOI: 10.1007/s12663-021-01617-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 07/06/2021] [Indexed: 10/20/2022] Open
Abstract
Background Parafunctional forces are a potential risk factor for implant-related complications. This study aimed to evaluate the possible relationship of bruxism with implant-related complications and marginal bone loss (MBL). Methods In this prospective cohort study, patients were divided into two groups with and without bruxism, and received single-tooth implants in the posterior mandible. Patients in the bruxer group were requested to use a customized fabricated night guard. Bone quality was also assessed based on CBCT scans. The MBL, crown detachment, and porcelain fracture were evaluated, and clinical assessments were made at the 12-month follow-up. Results Seventy patients were studied in two groups (n = 35 in each group). None of the implants in any of the two groups showed pain, sensitivity, suppuration, exudation, clinically detectable mobility, or peri-implant radiolucency. No significant difference was observed between the two groups in the mean MBL at the 12-month follow-up (p = 0.60). Regarding bone quality, there was no significant difference in the mean MBL among different types of bone qualities (p = 0.66). There were no significant differences regarding crown detachment and porcelain fracture between the two groups either (p = 0.32 and p = 0.30, respectively). Conclusion According to the results of this study, dental implant treatment according to the suggested protocol in bruxers yielded promising outcomes.
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Affiliation(s)
- Reza Tabrizi
- Department of Oral and Maxillofacial Surgery, Dental School, Shahid Beheshti University of Medical Sciences, Danshjoo BLVD, Velenjak, Shahid, Chamran Highway, 1983963113 Tehran, Iran
| | - Mahdie Rasaei
- Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamidreza Moslemi
- Department of Oral and Maxillofacial Surgery, Dental School, Shahid Beheshti University of Medical Sciences, Danshjoo BLVD, Velenjak, Shahid, Chamran Highway, 1983963113 Tehran, Iran
| | - Shervin Shafiei
- Department of Oral and Maxillofacial Surgery, Dental School, Shahid Beheshti University of Medical Sciences, Danshjoo BLVD, Velenjak, Shahid, Chamran Highway, 1983963113 Tehran, Iran
| | - Fatemeh Latifi
- Department of Oral and Maxillofacial Surgery, Dental School, Shahid Beheshti University of Medical Sciences, Danshjoo BLVD, Velenjak, Shahid, Chamran Highway, 1983963113 Tehran, Iran
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21
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Ye S, Zhou H, Lyu X, Feng H, Liu M, Wen C. Should the vent hole of posterior implant crowns be placed on the lateral surface? An in vitro study of the hydrodynamic feature of cement extrusion and retention ability. PLoS One 2022; 17:e0276198. [PMID: 36264869 PMCID: PMC9584542 DOI: 10.1371/journal.pone.0276198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 09/30/2022] [Indexed: 11/06/2022] Open
Abstract
Although placing a vent hole on the occlusal surface of the implant crown can reduce cervical marginal cement extrusion, it has disadvantages. Transferring the hole to the buccal or lingual surface of the posterior implant crown could therefore be an alternative solution. This study investigated the effect of transferring the vent hole to the lateral side of the implant posterior crown on the hydrodynamics of excess cement extrusion and the crown’s retention ability. Specially fabricated posterior implant crowns were divided into five groups: crowns with an occlusal hole (OH), occlusal lateral hole (OLH), middle lateral hole (MLH), cervical lateral hole (CLH), and no hole (NH). Each set of implant analog-abutment-crown specimens was wrapped in a polymethylacrylate base. The base of the implant crown was divided into four 90-degree quadrants along the diagonal of the square base with a pen mark. Cement was used to bond the crowns and the abutments, and the weight of cement extrusions at the vent holes and the abutment cervical margins were calculated. The distribution of cement extrusion at the margin was photographed in each quadrant, and the areas of surface coverage of cement extrusion were compared with ImageJ software. Retentive strength was measured as the dislocation force using a universal testing machine. One-way analysis of variance was used for result analysis. The cervical marginal cement extrusions of crowns with lateral holes (OLH, MLH, and CLH) were significantly less than that of NH crowns (P<0.05), but more than that of OH crowns (P<0.05). Subgroup analysis among the lateral hole groups indicated that the higher the position of the lateral hole, the lower the weight of the cement extrusion, and the smaller the total distribution area of cement extrusion. The cement extrusion distribution area was larger in the quadrant with the hole than in those opposite and next to the hole. Retention strength comparison indicated no significant difference between crowns with NH, OH, or lateral holes. Transferring the vent hole of the posterior implant crown to the lateral side could reduce cement extrusion at the cervical margin while reducing retention strength deterioration and the esthetic drawbacks caused by occlusal hole opening.
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Affiliation(s)
- Sixian Ye
- Department of Oral Implantology, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Huangjun Zhou
- Department of Oral Implantology, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Xingyu Lyu
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
- School of Stomatology, Southwest Medical University, Luzhou, Sichuan, China
| | - Hao Feng
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Min Liu
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Department of Oral Prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Cai Wen
- Department of Oral Implantology, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Department of VIP Dental Service, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, Sichuan, China
- * E-mail:
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22
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Waltenberger L, Wolfart S. SafetyCrown: a patient-centered, fully digital concept for immediate implant restoration following the one-abutment/one-time concept-a pilot case series of a new treatment concept. Int J Implant Dent 2022; 8:35. [PMID: 36068381 PMCID: PMC9448843 DOI: 10.1186/s40729-022-00434-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/20/2022] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION The patient-centered SafetyCrown-workflow enables the immediate restoration of posterior missing teeth and short free-end situations following one-abutment/one-time within three visits and only one surgical approach. This prosthodontic rehabilitation aims to combine the advantages of cemented and screw-retained restorations. REPORT The concept has been performed with 4 restorations in 3 patients and followed up for up to 1 year (mean: 11.2 months) without technical and/or biological complication. Visit 1: Intraoral optical impression, CBCT, and tooth shade selection. Virtual implant planning is performed, and a surgical guide is printed. After exporting the planned implant position, a tooth-colored abutment is fabricated from zirconia with a 1-mm supragingival cementation line, adhesively bonded to a titanium base. Visit 2: Fully navigated implant placement with insertion of the definitive abutment. Subsequently, optical impressions are prepared for A: immediate restoration using a PMMA crown without functional contacts; B: definitive crown fabricated from monolithic zirconia and individualized. The localization of the screw channel is marked using stain thus permitting precise screw channel access, if necessary. Visit 3: After osseointegration of the implant, the definitive crown is adhesively cemented supragingival. In a retrospective analysis of PROMs ('How stressful was the treatment process […]?' (0 = not stressful at all, 100 = very stressful), mean VAS score for SafetyCrown of 14 (SD 11.7) and 29.8 (SD 23.1) for standard procedure were present. CONCLUSION The SafetyCrown offers a shortened, patient-oriented concept for implant-supported single-tooth reconstructions omitting second-stage surgery. Clinical performance and hypothesized prosthodontic benefits require confirmation via an RCT.
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Affiliation(s)
- Lukas Waltenberger
- Department of Prosthodontics and Biomaterials, Centre for Implantology, University Hospital Aachen, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany.
| | - Stefan Wolfart
- Department of Prosthodontics and Biomaterials, Centre for Implantology, University Hospital Aachen, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
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Moraschini V, Kischinhevsky ICC, Sartoretto SC, de Almeida Barros Mourão CF, Sculean A, Calasans-Maia MD, Shibli JA. Does implant location influence the risk of peri-implantitis? Periodontol 2000 2022; 90:224-235. [PMID: 35913455 DOI: 10.1111/prd.12459] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Peri-implantitis is characterized by nonreversible and progressive loss of supporting bone and is associated with bleeding and/or suppuration on probing. Peri-implant disease is considered as the main etiologic factor related to implant failure. Peri-implant disease has a pathogenesis similar to that of periodontal disease, both being triggered by an inflammatory response to the biofilm accumulation. Although the prevalence of peri-implantitis has been evaluated by several clinical studies with different follow-ups, there are currently little data on the impact of implant location and the prevalence of peri-implantitis. The aim of this review, therefore, was to summarize the evidence concerning the prevalence of peri-implantitis in relation to implant location and associated risk predictors. Even though most studies evaluating the prevalence of peri-implantitis in relation to implant location are cross-sectional or retrospective, they suggest that the occurrence of peri-implantitis is most prevalent in the anterior regions of the maxilla and mandible. Moreover, it seems that there is a higher prevalence of peri-implantitis in the maxilla than in the mandible.
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Affiliation(s)
- Vittorio Moraschini
- Department of Periodontology, Dental Research Division, School of Dentistry, Veiga de Almeida University, Rio de Janeiro, Brazil.,Department of Oral Surgery, Dentistry School, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
| | | | - Suelen Cristina Sartoretto
- Department of Oral Surgery, Dentistry School, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
| | | | - Anton Sculean
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Monica Diuana Calasans-Maia
- Department of Oral Surgery, Dentistry School, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
| | - Jamil Awad Shibli
- Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos, São Paulo, Brazil
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Kim YM, Lee JB, Um HS, Chang BS, Lee JK. Long-term effect of implant-abutment connection type on marginal bone loss and survival of dental implants. J Periodontal Implant Sci 2022; 52:496-508. [PMID: 36468468 PMCID: PMC9807847 DOI: 10.5051/jpis.2200960048] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/02/2022] [Accepted: 05/17/2022] [Indexed: 01/07/2023] Open
Abstract
PURPOSE This study aimed to compare the long-term survival rate and peri-implant marginal bone loss between different types of dental implant-abutment connections. METHODS Implants with external or internal abutment connections, which were fitted at Gangneung-Wonju National University Dental Hospital from November 2011 to December 2015 and followed up for >5 years, were retrospectively investigated. Cumulative survival rates were evaluated for >5 years, and peri-implant marginal bone loss was evaluated at 1- and 5-year follow-up examinations after functional loading. RESULTS The 8-year cumulative survival rates were 93.3% and 90.7% in the external and internal connection types, respectively (P=0.353). The mean values of marginal bone loss were 1.23 mm (external) and 0.72 mm (internal) (P<0.001) after 1 year of loading, and 1.20 mm and 1.00 mm for external and internal abutment connections, respectively (P=0.137) after 5 years. Implant length (longer, P=0.018), smoking status (heavy, P=0.001), and prosthetic type (bridge, P=0.004) were associated with significantly greater marginal bone loss, and the use of screw-cement-retained prosthesis was significantly associated (P=0.027) with less marginal bone loss. CONCLUSIONS There was no significant difference in the cumulative survival rate between implants with external and internal abutment connections. After 1 year of loading, marginal bone loss was greater around the implants with an external abutment connection. However, no significant difference between the external and internal connection groups was found after 5 years. Both types of abutment connections are viable treatment options for the reconstruction of partially edentulous ridges.
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Affiliation(s)
- Young-Min Kim
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Jong-Bin Lee
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Heung-Sik Um
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Beom-Seok Chang
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Jae-Kwan Lee
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
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Ramos EU, Bizelli VF, Pereira Baggio AM, Ferriolli SC, Silva Prado GA, Farnezi Bassi AP. DO THE NEW PROTOCOLS OF PRF CENTRIFUGATION ALLOW BETTER CONTROL OF POSTOPERATIVE COMPLICATIONS AND HEALING AFTER SURGERY OF IMPACTED LOWER THIRD MOLAR? A SYSTEMATIC REVIEW AND META-ANALYSIS. J Oral Maxillofac Surg 2022; 80:1238-1253. [DOI: 10.1016/j.joms.2022.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/12/2022] [Accepted: 03/14/2022] [Indexed: 11/28/2022]
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Dorj O, Lin CK, Salamanca E, Pan YH, Wu YF, Hsu YS, Lin JCY, Lin HK, Chang WJ. Marginal Bone Loss around Implant-Retaining Overdentures versus Implant-Supported Fixed Prostheses 12-Month Follow-Up: A Retrospective Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19031750. [PMID: 35162773 PMCID: PMC8835213 DOI: 10.3390/ijerph19031750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/01/2022] [Accepted: 02/02/2022] [Indexed: 12/17/2022]
Abstract
Few studies have compared marginal bone loss (MBL) around implant-retaining overdentures (IODs) vs. implant-supported fixed prostheses (FPs). This study evaluated the mean MBL and radiographic bone-implant interface contact (r-BIIC) around IODs and implant-supported FPs. We also investigated osseointegration and MBL around non-submerged dental implants. We measured the changes between the MBL in the mesial and distal sites immediately after prosthetic delivery and after one year. The mean MBL and its changes in the IOD group were significantly higher. The mean percentage of r-BIIC was significantly higher in the FP group. MBL and its changes in males were significantly higher in the IOD group. The percentage of r-BIIC was significantly higher in the FP group. MBL in the lower site in the IOD group was significantly higher. Regarding MBL, the location of the implant was the only significant factor in the IOD group, while gender was the only significant predictor in the FP group. Regarding the r-BIIC percentage, gender was a significant factor in the FP group. We concluded that non-submerged dental implants restored with FPs and IODs maintained stable bone remodeling one year after prosthetic delivery.
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Affiliation(s)
- Odontuya Dorj
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
- Department of Dental Technology and Dental Hygiene, School of Dentistry, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia
| | - Chin-Kai Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
- Department of Dentistry, En Chu Kong Hospital, New Taipei City 237, Taiwan
| | - Eisner Salamanca
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
| | - Yu-Hwa Pan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
- Department of Dentistry, Chang Gung Memorial Hospital, Taipei 105406, Taiwan
- Graduate Institute of Dental & Craniofacial Science, Chang Gung University, Taoyuan 33305, Taiwan
- School of Dentistry, College of Medicine, China Medical University, Taichung 40402, Taiwan
| | - Yi-Fan Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
| | - Yung-Szu Hsu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
| | - Jerry C.-Y. Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Hsi-Kuei Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
- School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, New Taipei City 23561, Taiwan
- Correspondence: (H.-K.L.); (W.-J.C.); Tel.: +886-2-2736-1661 (ext. 5148) (H.-K.L. & W.-J.C.)
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (O.D.); (C.-K.L.); (E.S.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.); (J.C.-Y.L.)
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, New Taipei City 23561, Taiwan
- Correspondence: (H.-K.L.); (W.-J.C.); Tel.: +886-2-2736-1661 (ext. 5148) (H.-K.L. & W.-J.C.)
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Wen C, Jiang R, Zhang Z, Lei B, Zhong Y, Zhou H. Esthetic Evaluation and Acceptability of Different Hole Designs on Implant Crowns from the Perspective of Patients and Dentists in China. Patient Prefer Adherence 2022; 16:427-437. [PMID: 35210759 PMCID: PMC8860758 DOI: 10.2147/ppa.s351143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/27/2022] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Abutment access hole on dental implant crowns may facilitate crown retrieval and reduce cement overflow but present esthetic obstacle for patients. This study aimed to investigate the esthetic evaluation and acceptability of implant crowns with different hole designs from the perspective of patients and dentists. MATERIALS AND METHODS Anterior and posterior implant zirconia crowns were fabricated into three types: no hole (NH), 1 mm micro hole (MH), and 2.5 mm regular hole (RH). The NH crown was set as the control, and the anterior and posterior crowns with MH and RH were evaluated. The subjects, who were recruited randomly, were comprised of lay patients (n=60) and professional dentists (n=30). All subjects were invited to evaluate the esthetic performance of MH and RH crowns on a Visual Analog Scale (VAS), rate them from 0 to 10, state their acceptability of these crowns, and label them as acceptable and unacceptable. RESULTS The ANOVA analysis of the VAS esthetic evaluation showed that the size of the hole, the position of the teeth, and the professional background of the subject significantly and independently affected esthetic perception. Crowns with MH in the posterior position had higher esthetic scores and acceptability compared with crowns with RH in the anterior position, and dentists tended to show higher acceptance and better esthetic rating for crowns with holes compared with lay patients. CONCLUSION The hypothesis that patients and dentists hold similar esthetic evaluations or acceptability towards implant crown hole designs was rejected. Lay patients had a lower tolerance for venting holes than dentists. Crowns with 1 mm micro holes were more recommendable than crowns with regular abutment access holes from the point of view of satisfying patients' esthetic needs.
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Affiliation(s)
- Cai Wen
- Department of Oral Implantology, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
- Department of VIP Dental Service, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, Sichuan, People's Republic of China
- Orofacial Reconstruction and Regeneration Laboratory,The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, Sichuan, People's Republic of China
- Correspondence: Cai Wen, Department of Oral Implantology, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China, Email
| | - Rong Jiang
- Department of Dentistry, People’s Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Ma’erkang, Sichuan, People’s Republic of China
| | - Zhiqiang Zhang
- Department of Dentistry, People’s Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Ma’erkang, Sichuan, People’s Republic of China
| | - Bo Lei
- Department of Dentistry, People’s Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Ma’erkang, Sichuan, People’s Republic of China
| | - Yingquan Zhong
- Department of Dentistry, People’s Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Ma’erkang, Sichuan, People’s Republic of China
| | - Huangjun Zhou
- Department of Oral Implantology, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
- Orofacial Reconstruction and Regeneration Laboratory,The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, Sichuan, People's Republic of China
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Logistic Regression Analysis of the Factors Involved in the Failure of Osseointegration and Survival of Dental Implants with an Internal Connection and Machined Collar: A 6-Year Retrospective Cohort Study. BIOMED RESEARCH INTERNATIONAL 2021; 2021:9684511. [PMID: 34660803 PMCID: PMC8516545 DOI: 10.1155/2021/9684511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 09/01/2021] [Accepted: 09/21/2021] [Indexed: 11/30/2022]
Abstract
Background Although the long-term success rate of dental implants is currently close to 95%, it is necessary to provide more evidence on the factors related to the failure of osseointegration and survival. Purpose To establish the risk factors associated with the failure of osseointegration and survival of dental implants with an internal connection and machined collar and to establish a predictive statistical model. Materials and Methods An analytical, retrospective, and observational clinical study of a sample of 297 implants with a follow-up of up to 76 months. Independent variables related to the implant, patient, and surgical and rehabilitative procedures were identified. The dependent variables were failure of osseointegration and failure of implant survival after prosthetic loading. A survival analysis was carried out by applying the Kaplan-Meier model (significance for p < 0.05). The log-rank test and the Cox regression analysis were applied to the factors that presented differences. Finally, the regression logit function was used to determine whether it is possible to predict the risk of implant failure according to the analyzed variables with the data obtained in this study. Results The percentages of osseointegration and survival were 97.6 and 97.2%, respectively. For osseointegration, there were significant differences according to gender (p = 0.048), and the risk of nonosseointegration was 85% lower in women. Regarding survival, the Cox analysis converged on only two factors, which were smoking and treatment with anticoagulant drugs. The risk of loss was multiplied by 18.3 for patients smoking more than 10 cigarettes per day and by 28.2 for patients treated with anticoagulants. Conclusions The indicated risk factors should be considered, but the analysis of the results is not sufficient to create a predictive model.
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Retrospective Clinicopathological Analysis of 65 Peri-Implant Lesions. ACTA ACUST UNITED AC 2021; 57:medicina57101069. [PMID: 34684106 PMCID: PMC8539918 DOI: 10.3390/medicina57101069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/02/2021] [Accepted: 10/04/2021] [Indexed: 11/17/2022]
Abstract
Background and Objectives: Peri-implantitis is a common finding among patients with dental implants. There is no consensus regarding the treatment of this disease, but in many cases, surgical treatment is common practice. A histopathological analysis is not an integral part of suggested protocols. The present study investigated the clinical and histopathological parameters of lesions mimicking peri-implantitis and correlated them with the outcome and follow-up data. Materials and Methods: The study included 65 consecutive biopsies taken from peri-implantitis patients between 2008-2019. Results: The three common diagnoses were fibro-epithelial hyperplasia 20 (30.7%), pyogenic granuloma 16 (24.6%), and peripheral giant cell granuloma 15 (23%). There were 18 cases of recurrent lesions in the study group (27.7%). The recurrence rate was the highest in peripheral giant cell granuloma (8, 12.3%), versus 6% in pyogenic granuloma and fibro-epithelial hyperplasia. These differences in the recurrence rate were statistically significant (p = 0.014). Conclusions: This study emphasizes the necessity of submitting tissue of peri-implantitis cases for histopathological analysis since the more locally aggressive lesions (peripheral giant cell granuloma and pyogenic granuloma), which comprise nearly half of the cases in this study, do not differ in clinical or radiographic characteristics from other peri-implant lesions.
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30
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Wolfart S, Rittich A, Groß K, Hartkamp O, von der Stück A, Raith S, Reich S. Cemented versus screw-retained posterior implant-supported single crowns: A 24-month randomized controlled clinical trial. Clin Oral Implants Res 2021; 32:1484-1495. [PMID: 34547824 DOI: 10.1111/clr.13849] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/02/2021] [Accepted: 06/17/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To compare the incidence of biological and technical complications of cemented and screw-retained monolithic lithium-disilicate implant-supported posterior single crowns. MATERIAL AND METHODS Forty-one subjects with a total of 56 implants received randomly allocated 28 cemented and 28 screw-retained crowns. In the screw-retained group, monolithic lithium-disilicate restorations were luted to titanium bases extraorally. In the cemented group, monolithic lithium-disilicate crowns were cemented on individualized titanium abutments intraorally. All restorations were examined according to modified FDI criteria within 2 weeks of inserting the crowns (baseline) and after 12 (n = 46) and 24 (n = 43) months. Bone loss was evaluated by standardized radiographs at baseline and 12 months. RESULTS After 12 months, the incidence of mucositis (positive bleeding on probing) was 14.2% (screw-retained) and 17.9% (cement-retained). The gingival and plaque index and a mean marginal bone loss between 0.03-0.15 mm showed no significant difference between the groups. In the cemented group, cement residues were detected at baseline at two restorations (6.9%) by radiographic examination. A complete digital workflow was realized in most cases (85.7%). At 24 months, no restoration had failed, and no chipping of the ceramic had occurred. In the screw-retained group, screw loosening occurred in one implant. In both groups, there was obvious deterioration in the quality of 32% of the occlusal and of 18% of the proximal contact points. CONCLUSIONS The type of retention mode of monolithic implant-retained lithium-disilicate posterior crowns had no influence on the biological and technical complication rate.
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Affiliation(s)
- Stefan Wolfart
- Department of Prosthodontics and Biomaterials, RWTH University Hospital, Aachen, Germany
| | - Anne Rittich
- Department of Prosthodontics and Biomaterials, RWTH University Hospital, Aachen, Germany
| | - Karin Groß
- Department of Prosthodontics and Biomaterials, RWTH University Hospital, Aachen, Germany
| | - Oliver Hartkamp
- Department of Prosthodontics and Biomaterials, RWTH University Hospital, Aachen, Germany
| | | | - Stefan Raith
- Department of Prosthodontics and Biomaterials, RWTH University Hospital, Aachen, Germany.,Clinic for Oral and Maxillofacial Surgery, Aachen, Germany
| | - Sven Reich
- Department of Prosthodontics and Biomaterials, RWTH University Hospital, Aachen, Germany
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Consequences of Peri-Implant Bone Loss in the Occlusal Load Transfer to the Supporting Bone in terms of Magnitude of Stress, Strain, and Stress Distribution: A Finite Element Analysis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:3087071. [PMID: 34513989 PMCID: PMC8429018 DOI: 10.1155/2021/3087071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/21/2021] [Accepted: 08/18/2021] [Indexed: 11/17/2022]
Abstract
Methods Three models of a single internal connection bone level-type implant inserted into a posterior mandible bone section were constructed using a 3D finite element software: one control model without marginal bone loss and two test models, both with a circumferential peri-implant bone defect, one with a 3 mm high defect and the other one 6 mm high. A 150 N static load was tested on the central fossa at 6° relative to the axial axis of the implant. Results The results showed differences in the magnitude of strain and stress transferred to the bone between models, being the higher strain found in the trabecular bone around the implant with greater marginal bone loss. Stress distribution differed between models, being concentrated at the cortical bone in the control model and at the trabecular bone in the test models. Conclusion Marginal bone loss around dental implants under occlusal loading influences the magnitude and distribution of the stress transferred and the deformation of peri-implant bone, being higher as the bone loss increases.
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Lv XL, Qian SJ, Qiao SC, Gu YX, Lai HC, Shi JY. Clinical, radiographic, and immunological evaluation of angulated screw-retained and cemented single-implant crowns in the esthetic region: A 1-year randomized controlled clinical trial. Clin Implant Dent Relat Res 2021; 23:692-702. [PMID: 34390601 DOI: 10.1111/cid.13035] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 05/08/2021] [Accepted: 07/19/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Screw-retained implant crowns are considered more biologically compatible than cemented crowns due to the absence of excess cement. However, traditional screw-retained implant crowns are not viable when the access hole of the screw channel would need to be located in an esthetic area, which would compromise the esthetic outcome of the treatment. PURPOSE To evaluate the clinical, radiographic, and immunological outcomes of angulated screw-retained and cemented single-implant crowns in the esthetic region. MATERIALS AND METHODS The study was a single-center, open-label, randomized controlled clinical trial. Eligible patients were randomly placed in two groups: angulated screw-retained group (AG) and cemented group (CG). Implant survival rate, bleeding on probing rate (BOP%), probing depth (PD), modified plaque index (mPI), marginal bone loss (MBL), concentrations of pro-inflammatory cytokines (TNF-α, IL-6) in peri-implant crevicular fluid (PICF), mechanical complications, and pink esthetic score/white esthetic score (PES/WES) were evaluated. RESULTS Fifty-six patients (AG: 29, CG: 27) attended the 1-year examination. The drop-out rate was 6.67%. No implant failure was found in both groups during the observation period. BOP% was significantly lower in the AG than that in the CG (mean, 21.84% ± 19.97% vs. 37.04% ± 26.28%, p = 0.018). The concentration of TNF-α in PICF was significantly higher in the AG than that in the CG (median, 13.54 vs. 4.62, p = 0.019). No significant difference of PD, mPI, MBL, IL-6, or mechanical complication rates was found between the two groups. Mean scores for PES/WES were 21.71 and 21.64 in the AG and CG, respectively. CONCLUSION Based on the present results, both treatment options showed acceptable clinical outcomes in the short term. Angulated screw-retained crowns might benefit the peri-implant soft tissue. However, studies with long-term follow-up are needed to confirm whether the higher concentration of TNF-α will compromise the long-term outcomes of treatment.
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Affiliation(s)
- Xiao-Lei Lv
- Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Shu-Jiao Qian
- Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Shi-Chong Qiao
- Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Ying-Xin Gu
- Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Hong-Chang Lai
- Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jun-Yu Shi
- Department of Oral and Maxillo-facial Implantology, Shanghai Key Laboratory of Stomatology, National Clinical Research Center for Stomatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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33
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Dini C, Borges GA, Costa RC, Magno MB, Maia LC, Barão VAR. Peri-implant and esthetic outcomes of cemented and screw-retained crowns using zirconia abutments in single implant-supported restorations-A systematic review and meta-analysis. Clin Oral Implants Res 2021; 32:1143-1158. [PMID: 34352144 DOI: 10.1111/clr.13824] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/23/2021] [Accepted: 07/07/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To evaluate the peri-implant tissue changes and esthetic outcomes of cemented and screw-retained crowns of single-tooth implants in the esthetic zone using zirconia abutments. MATERIAL AND METHODS An electronic search was performed on nine databases. The risk-of-bias was assessed by the revised Cochrane risk-of-bias tool for randomized (RoB 2) and non-randomized (ROBINS-I) clinical trials. Marginal bone level change, soft tissue thickness, bleeding on probing, probing depth, survival rates of implants and crowns, complications, plaque and papilla indexes, and pink esthetic score data were extracted and analyzed. The certainty of evidence was accessed through the GRADE approach. RESULTS Nine records were included and 7 were used in the meta-analyses. Screw-retained crowns presented greater marginal bone level change (MD -0.04 [-0.08, -0.00] p = 0.04, I2 = 0%) compared to cemented crowns up to 1-year. At 3 and 4 years no significant differences (p > 0.05) were observed. Soft tissue thickness did not differ between groups (p > 0.05). The bleeding on probing was higher in cemented group than in screw-retained crowns at 1-year (MD 0.17 [0.08, 0.27] p = 0.0005, I2 = 0%), at medium-term periods (3 and 4 years) no statistically significant differences (p > 0.05) were observed for this outcome. Probing depth, survival rates of implants and crowns, complications, and plaque index, as well as esthetic analysis using the papilla index and pink esthetic score did not differ statistically (p > 0.05) between both retention systems at short and medium-term periods. CONCLUSION The connection system considering zirconia abutments presented no influence on peri-implant parameters and esthetics evaluation for medium-term periods (3 and 4 years).
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Affiliation(s)
- Caroline Dini
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP, Piracicaba, Brazil
| | - Guilherme Almeida Borges
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP, Piracicaba, Brazil
| | - Raphael Cavalcante Costa
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP, Piracicaba, Brazil
| | - Marcela Baraúna Magno
- Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Rua Rodolpho Paulo Rocco - Cidade Universitária, Rio de Janeiro, Brazil
| | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Rua Rodolpho Paulo Rocco - Cidade Universitária, Rio de Janeiro, Brazil
| | - Valentim Adelino Ricardo Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP, Piracicaba, Brazil
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34
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Influence of an Implant Fixture including a Freely Removable Micro-Locking Implant Prosthesis on Peri-Implant Tissues and Implant Prostheses: A Prospective Clinical Study. J Clin Med 2021; 10:jcm10153321. [PMID: 34362106 PMCID: PMC8348657 DOI: 10.3390/jcm10153321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/08/2021] [Accepted: 07/26/2021] [Indexed: 11/17/2022] Open
Abstract
This prospective study was undertaken to evaluate the clinical usefulness of a newly developed one-piece, screw-free, and micro-locking implant system, which was designed to overcome the shortcomings of the existing implant systems. Thirty-eight patients were recruited and randomly and equally assigned to an experimental group (micro-locking one-piece fixture, MLF; n = 19) or a control group (micro-locking abutment, MLA). Cumulative implant survival rates, marginal bone resorptions, probing depths, plaque indices, bleeding indices, and complications were obtained by using clinical and radiographic findings at 6 months and 12 months after prosthesis placement. Complications that occurred multiple times for single implants were counted. During the 12 month observation period, survival rates were 100% in both groups. No significant intergroup differences were observed for marginal bone resorption, probe depth, or bleeding index. However, mean plaque index was significantly lower in the MLF group at 12 months (p < 0.05). During the 12-month observation period, food impaction (26.3%) was the main complication in the MLF group and screw loosening (5.3%), prosthesis detachment (5.3%), and food impaction (5.3%) were observed in the MLA group. The results of this study suggest that the one-piece micro-locking implant system offers a predictable treatment method.
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35
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Jamshidy L, Tadakamadla SK, Choubsaz P, Sadeghi M, Tadakamadla J. Association of IL-10 and TNF-α Polymorphisms with Dental Peri-Implant Disease Risk: A Meta-Analysis, Meta-Regression, and Trial Sequential Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18147697. [PMID: 34300145 PMCID: PMC8304087 DOI: 10.3390/ijerph18147697] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/16/2021] [Accepted: 07/16/2021] [Indexed: 12/30/2022]
Abstract
Genetic susceptibility has been reported to be an important risk factor for peri-implant disease (PID). The aim of this meta-analysis was to assess the association between TNF-α and IL-10 polymorphisms and PID susceptibility. The Web of Science, Cochrane Library, Scopus, and PubMed/Medline databases were searched for studies published until 12 April 2021. RevMan 5.3, CMA 2.0, SPSS 22.0, and trial sequential analysis software were used. Twelve studies were included in our analysis. The pooled ORs for the association of TNF-α (−308 G > A), IL-10 (−1082 A > G), IL-10 (−819 C > T), and IL-10 (−592 A > C) polymorphisms were 1.12, 0.93, 1.35, and 0.77 for allelic; 1.42, 0.95, 3.41, and 0.34 for homozygous; 1.19, 1.88, 1.23, and 0.49 for heterozygous, 1.53, 1.12, 1.41, and 0.39 for recessive; and 1.16, 1.87, 2.65, and 0.75 for dominant models, respectively, with all the estimates being insignificant. The results showed an association between TNF-α (−308 G > A) polymorphism and the risk of PID in patients of Asian ethnicity (OR = 1.59; p = 0.03). The present meta-analysis illustrated that TNF-α (−308 G > A), IL-10 (−1082 A > G), IL-10 (−819 C > T), and IL-10 (−592 A > C) polymorphisms were not associated with the risk of PID, whereas TNF-α (−308 G > A) polymorphism was associated with an elevated risk of PID in Asian patients.
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Affiliation(s)
- Ladan Jamshidy
- Department of Prosthodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah 6713954658, Iran;
| | - Santosh Kumar Tadakamadla
- School of Medicine and Dentistry & Menzies Health Institute Queensland, Griffith University, Brisbane, QLD 4222, Australia
- Correspondence:
| | - Parsia Choubsaz
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran;
| | - Masoud Sadeghi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah 6714415185, Iran;
| | - Jyothi Tadakamadla
- School of Medicine and Dentistry, Griffith University, Brisbane, QLD 4222, Australia;
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36
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Wada M, Mameno T, Otsuki M, Kani M, Tsujioka Y, Ikebe K. Prevalence and risk indicators for peri-implant diseases: A literature review. JAPANESE DENTAL SCIENCE REVIEW 2021; 57:78-84. [PMID: 34158874 PMCID: PMC8203834 DOI: 10.1016/j.jdsr.2021.05.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 03/18/2021] [Accepted: 05/23/2021] [Indexed: 02/08/2023] Open
Abstract
Peri-implant diseases are known as undesirable conditions that can occur after implant therapy. Although several risk indicators are becoming clear, the causes of peri-implant diseases have not been completely investigated. The purpose of this review was to summarize the prevalence and risk indicators for peri-implant diseases by referring to current papers from various angles. Many studies have reported the varied prevalence of peri-implant mucositis (23.9%-88.0% at the patient level and 9.7%-81.0% at the implant level) and peri-implantitis (8.9%-45% at the patient level and 4.8%-23.0% at the implant level). Additionally, several studies concluded that poor oral hygiene and lack of regular maintenance were strongly correlated with the development of both peri-implant mucositis and peri-implantitis. Diabetes and a history of periodontitis were revealed as risk indicators for peri-implantitis. However, there was no definitive conclusion about the correlations between peri-implant diseases and other factors such as smoking, the shape of the implant superstructure, and the condition of the keratinized mucosa. Further studies useful for evidence-based decision-making are needed for predictable implant therapy in the long term.
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Affiliation(s)
- Masahiro Wada
- Osaka University, Graduate School of Dentistry Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Japan
| | - Tomoaki Mameno
- Osaka University, Graduate School of Dentistry Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Japan
| | - Motohiro Otsuki
- Osaka University, Graduate School of Dentistry Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Japan.,Private Dental Office, Japan
| | - Misako Kani
- Osaka University, Graduate School of Dentistry Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Japan
| | - Yoshitaka Tsujioka
- Osaka University, Graduate School of Dentistry Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Japan
| | - Kazunori Ikebe
- Osaka University, Graduate School of Dentistry Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Japan
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37
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Lemos CAA, Verri FR, Noritomi PY, Souza Batista VE, Cruz RS, de Luna Gomes JM, Limirio Oliveira JPJ, Pellizzer EP. Biomechanical evaluation of different implant-abutment connections, retention systems, and restorative materials in the implant-supported single crowns using 3D finite element. J ORAL IMPLANTOL 2021; 48:194-201. [PMID: 34091686 DOI: 10.1563/aaid-joi-d-20-00328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This is an in silico study aimed to evaluate the biomechanical influence of different implant-abutment interfaces (external hexagon and Morse taper implants), retention systems (cement- and screw-retained), and restorative crowns (metal-ceramic and monolithic) using three-dimensional finite element analysis (3D-FEA). Eight 3D models were simulated for the maxillary first molar area using InVesalius, Rhinoceros, and SolidWorks and processed using the Femap and NEi Nastran softwares. Axial and oblique forces of 200 N and 100 N, respectively, were applied on the occlusal surface of the prostheses. Microstrain and von Mises stress maps were used to evaluate the deformation (cortical bone tissue) and stress (implants/fixation screws/crowns), respectively for each model. For both loadings, Morse taper implants had lower microstrain values than the external hexagon implants. The retention system did not affect microstrain on the cortical bone tissue under both loadings. However, the cemented prosthesis displayed higher stress with the fixation screw than the external hexagon implants. No difference was observed between the metal-ceramic and zirconia monolithic crowns in terms of microstrain and stress distribution on the cortical bone, implants or components. Morse taper implants can be considered as a good alternative for dental implant rehabilitation because they demonstrated better biomechanical behavior for the bone and fixation screw as compared to external hexagon implants. Cement-retained prosthesis increased the stress on the fixation screw of the external hexagon implants, thereby increasing the risk of screw loosening/fracture in the posterior maxillary area. The use of metal-ceramic or monolithic crowns did not affect the biomechanical behavior of the evaluated structures.
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Affiliation(s)
- Cleidiel Aparecido Araujo Lemos
- Universidade Estadual Paulista Julio de Mesquita Filho Pos-Graduate Student Materiais Odontológicos e Prótese Rua José Bonifácio, 1193 BRAZIL Araçatuba São Paulo 16015267 +5518981425301 Universidade Federal de Juiz de Fora
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38
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Genetti L, Ercoli C, Kotsailidi EA, Feng C, Tsigarida A, Chochlidakis K. Clinical Evaluation of Crestal Bone Levels, Peri-Implant Indices, and Mucosal Margin Position of Immediately Impressed Posterior Dental Implants: A Cross-Sectional Study. J Prosthodont 2021; 30:763-768. [PMID: 33834572 DOI: 10.1111/jopr.13362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2021] [Indexed: 11/28/2022] Open
Abstract
PURPOSE This is a cross-sectional clinical study to evaluate crestal bone levels, mucosal margin position, probing depths, bleeding on probing, and plaque and bleeding indices of implants restored with an immediate impression workflow compared to implants restored with a delayed impression workflow. MATERIALS AND METHODS Patients who had received a posterior single implant crown in the premolar and molar regions were identified and scheduled for a single-visit study appointment. Outcome measurements included soft tissues peri-implant indices, peri-implant mucosal margin position, and crestal bone levels. Several systemic-, local-, and prosthesis-related factors were recorded. Bitewing radiographs were used to assess crestal bone levels. Wilcoxon rank sum test was used to compare the medians of continuous measurements and Pearson chi-square test (or Fisher's exact test) was used to compare the distributions of categorical variables between the two groups. RESULTS Twenty eight patients were included. Crestal bone levels, peri-implant mucosal margin position and peri-implant soft tissue parameters for the immediately impressed group were not statistically different from the delayed impressed group, except for probing depth for the immediately impressed buccal site, which was less than that of the delayed group. Mesial bone level for cement-retained crowns was significantly more coronal than for screw-retained ones. CONCLUSIONS While an isolated statistical difference was found in probing depth, the current study suggests that there is no clinically significant difference between implants impressed with immediate and delayed implant workflows when considering crestal bone levels, peri-implant mucosal margin position, and most peri-implant indices.
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Affiliation(s)
- Loren Genetti
- Department of Prosthodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, NY
| | - Carlo Ercoli
- Department of Prosthodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, NY.,Department of Periodontology, Eastman Institute for Oral Health, University of Rochester, Rochester, NY
| | - Elli Anna Kotsailidi
- Department of Prosthodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, NY.,Department of Periodontology, Eastman Institute for Oral Health, University of Rochester, Rochester, NY
| | - Changyong Feng
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY
| | - Alexandra Tsigarida
- Department of Periodontology, Eastman Institute for Oral Health, University of Rochester, Rochester, NY
| | - Konstantinos Chochlidakis
- Department of Prosthodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, NY
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Chen J, Wang L, Yang L, Zhang X, Huang B, Li J. The prosthetic screw loosening of two-implant supported screw-retained fixed dental prostheses in the posterior region: A retrospective evaluation and finite element analysis. J Biomech 2021; 122:110423. [PMID: 33895541 DOI: 10.1016/j.jbiomech.2021.110423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 03/21/2021] [Accepted: 03/29/2021] [Indexed: 10/21/2022]
Abstract
The study was aimed to investigate the prosthetic screw loosening of two splinted implants-supported, screw-retained (2-4-unit) fixed dental prostheses (TIS-FDPs) in posterior region and to explore the underlying mechanism. In the retrospective study, a study group of TIS-FDPs (n = 23) presenting prosthetic screw loosening and a control group of TIS-FDPs (n = 32) absent of prosthetic screw loosening during observation period were included. The prosthesis height (PH), inter-implant distance (ID) and cantilever distance (CD) of TIS-FDPs were measured and compared within two groups. In the finite element analysis (FEA) part, three serials of models presenting different clinical scenarios were constructed based on the abovementioned PH, ID and CD values respectively. In the clinical evaluation, the values of pH and CD in study group were statistically higher than those in control group, whereas the values of ID had no significant difference. In the FEA, the results indicated that there was no linear correlation between the increased ID values and the maximum von Mises stresses and the rotation angles. On the other hand, the increased PH and CD values would result in a strong linear growth of the maximum von Mises stresses and the rotation angles. Besides, it was found that the regression coefficients in PH model were all higher than those in ID and CD models. When TIS-FDPs were delivered in posterior region, the PH and the CD, rather than the ID, seemed to have a significant impact on the stress concentration of the prosthetic screws and the incident of prosthetic screws loosening.
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Affiliation(s)
- Jianyu Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Lin Wang
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China.
| | - Lijia Yang
- College of Stomatology, Jinan University, Guangzhou, China
| | - Xiao Zhang
- Guangzhou Janus Biotechnology Co. Ltd., Guangzhou, China; Foshan Angels Biotechnology Co. Ltd., Foshan, China
| | - Baoxin Huang
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jingping Li
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
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40
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Alhammadi SH, Burnside G, Milosevic A. Clinical outcomes of single implant supported crowns versus 3-unit implant-supported fixed dental prostheses in Dubai Health Authority: a retrospective study. BMC Oral Health 2021; 21:171. [PMID: 33794841 PMCID: PMC8017629 DOI: 10.1186/s12903-021-01530-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 03/22/2021] [Indexed: 01/16/2023] Open
Abstract
Background This study assessed retrospectively the clinical outcomes of single implant-supported crowns and implant-supported fixed dental prostheses (FDPs). Methods This case series compared biological and technical complications in single implant-supported crowns and implant-supported bridges in a time framed sample of all patients who received dental implants between 2009 and 2016 in Dubai Health Authority. Only 3-unit implant-supported prostheses (FDPs) with one intervening pontic and an implant each end were included for comparison to single crown supported implants. Cantilevered implants, implant-supported dentures and cases involving bone grafts or sinus lifts were excluded. The primary outcome measure was marginal bone loss, measured on digital radiographs taken after prosthesis placement at baseline and one year after implant loading, whilst peri-implantitis and technical complications were secondary outcomes. Mixed regression models adjusted for clustering of implants within patients was used for patient and implant factor associations. Results A total of 454 patients (152 males; 302 females) had 1673 implants. The mean age of males (53.7 years, SD 14.6) was significantly greater than females (49.3 years, SD 12.9, p < 0.001). Mean mesial bone loss on the FDPs was significantly greater at 1 year (1.14 mm, SD 0.63) compared with the mesial surface of single implant-supported crowns (0.30 mm, SD 0.43, p < 0.001). Mean distal bone loss was also significantly greater at 1 year on the distal surfaces of implants supporting bridgework (1.29 mm, SD 0.71) compared with distal surfaces on single implant-supported crowns (0.36 mm, SD 0.54, p < 0.001). Mean marginal bone loss mesially and distally around implants placed in the lower anterior sextant was significantly greater compared to all other sites (p < 0.001). Bone loss by gender, patient’s age and medical condition was not different between the 2 implant groups. Screw loosening was the main technical complication (11.5%) whilst peri-implantitis occurred rarely (0.5%). The 66 cement retained implants had significantly more complications compared to the 1607 screw retained implants (p < 0.001). Conclusions Mean marginal bone loss around the supporting implants of FDPs (3-unit fixed bridgework) was greater than on single implant-supported crowns at one year after implant loading. Position in the mouth was associated with bone loss. Biological and technical complications occurred rarely.
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Affiliation(s)
- Sara Hussain Alhammadi
- Hamdan Bin Mohamed College of Dental Medicine, Mohamed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai, UAE
| | - Girvan Burnside
- Department of Health Data Science, University of Liverpool, Waterhouse Building Block F, 1-5 Brownlow Street, Liverpool, L69 3GL, UK
| | - Alexander Milosevic
- Hamdan Bin Mohamed College of Dental Medicine, Mohamed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai, UAE.
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41
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Strauss FJ, Hämmerle CHF, Thoma DS. Short communication: Cemented implant reconstructions are associated with less marginal bone loss than screw-retained reconstructions at 3 and 5 years of loading. Clin Oral Implants Res 2021; 32:651-656. [PMID: 33686723 DOI: 10.1111/clr.13737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/28/2021] [Accepted: 03/03/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To analyse whether there is a difference in marginal bone levels (MBL) and the respective changes between cemented and screw-retained reconstructions at 3 and 5 years of loading. METHODS Radiographic data from 14 prospective multicentre clinical trials following implant loading with fixed cemented (CEM) or screw-retained (SCREW) reconstructions with a 3- to 5-year follow-up were retrieved from a database. MBL and MBL changes were assessed at initiation of implant loading (BL), at 3 (FU-3) and 5 years (FU-5) thereafter. The presence of peri-implantitis was also determined. RESULTS Data from 1,672 implants at BL, 1,565 implants at FU-3 and 1,109 implants at FU-5 were available. The mean MBL amounted to 0.57 mm (SD 0.87) at BL, 0.55 mm (SD 0.86) at FU-3 and 0.65 mm (SD 1.18) at FU-5. At FU-3, the mean MBL was 0.44 mm (SD 0.65) in group CEM and 0.63 mm (SD 0.99) in group SCREW showing a significant difference between the groups (intergroup <0.05). At FU-5, the mean MBL was 0.42 mm (SD 0.77) in CEM and 0.80 mm (SD 1.37) in SCREW, again with significant differences between both groups (p < .05). MBL changes between BL and FU-3 amounted to 0.11 mm (SD 1.02) (bone loss) in SCREW and -0.17 mm (SD 1.03) (bone gain) in CEM. Similarly, mean MBL changes from BL to FU-5 amounted to 0.23 mm (SD 1.31) (bone loss) in SCREW and -0.26 mm (SD 1.27) (bone gain) in CEM. The prevalence of peri-implantitis amounted to 6.9% in CEM and 5.6% in group SCREW (intergroup p = .29063) at FU-3. At FU-5, peri-implantitis amounted to 4.6% in CEM and 6.2% in group SCREW (intergroup p = .28242). CONCLUSION Cemented implant reconstructions compared with screw-retained reconstructions revealed higher marginal bone levels and similar rates of peri-implantitis during 5 years. The difference in MBL and the respective changes between the two groups, however, appear to be clinically negligible.
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Affiliation(s)
- Franz-Josef Strauss
- Clinic of Reconstructive Dentistry, University of Zurich, Zurich, Switzerland
| | | | - Daniel S Thoma
- Clinic of Reconstructive Dentistry, University of Zurich, Zurich, Switzerland
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AKIN H, ÜNAL Y, YİLMAZER K. Effect of different crown removing procedures on the implant stability quotient and removal torque values of dental implants. CLINICAL AND EXPERIMENTAL HEALTH SCIENCES 2021. [DOI: 10.33808/clinexphealthsci.789728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Edmondson EK, Trejo PM, Soldatos N, Weltman RL. The ability to screw-retain single implant-supported restorations in the anterior maxilla: A CBCT analysis. J Prosthet Dent 2021; 128:443-449. [PMID: 33610330 DOI: 10.1016/j.prosdent.2021.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 12/31/2020] [Accepted: 01/05/2021] [Indexed: 11/26/2022]
Abstract
STATEMENT OF PROBLEM Evidence to validate the routine use of angled screw-channel abutments in the anterior maxilla is sparse. If properly planned, they might provide surgical and prosthetic benefits. PURPOSE The purpose of this observational study was to determine the prevalence of digitally placed implants in the anterior maxilla that would allow screw-retained implant-supported restorations with either a straight or an angled screw-channel abutment. MATERIAL AND METHODS Two hundred cone beam computed tomography (CBCT) scans met the inclusion criteria for retrospective analysis and digital implant planning. Virtual implants were planned for randomly selected anterior maxillary teeth by using the anatomic crown and root position. Virtual abutments of varying angulation were attached to the implants to determine the ability to screw retain a restoration with either a straight or an angled screw-channel abutment. RESULTS One hundred fifty-two (76%) sites required an angled screw-channel abutment to enable screw retention. Forty-eight (24%) sites allowed screw retention with a straight abutment. The percentage of implants requiring angled or straight abutments varied significantly among anterior teeth (P<.005). One hundred nine (71.7%) angled screw-channel abutment sites required a 5-degree abutment, 41 (26.9%) required a 10-degree abutment, and 2 (1.3%) required a 15-degree abutment. Among the anterior teeth, lateral incisors presented a greater need for angled screw-channel abutments. None of the implants in the present study needed cement-retained restorations. CONCLUSIONS Angled abutments allowed for screw-retained restorations on digitally planned implants in the anterior maxilla. The required angular correction to a screw-retained restoration was ≤15 degrees. Screw-retained restorations were frequently achievable (76%) with the use of angled screw-channel abutments or with straight abutments (24%), and lateral incisors presented a greater need for angled screw-channel abutments.
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Affiliation(s)
- Erin K Edmondson
- Private practice, San Antonio, Texas; Department of Periodontics and Dental Hygiene, The University of Texas School of Dentistry, Health Science Center at Houston, Houston, Texas
| | - Pedro M Trejo
- Clinical Associate Professor, Department of Periodontics and Dental Hygiene, The University of Texas School of Dentistry, Health Science Center at Houston, Houston, Texas; Private practice, Houston, Texas.
| | - Nikolaos Soldatos
- Associate Professor, Department of Periodontics and Dental Hygiene, The University of Texas School of Dentistry, Health Science Center at Houston, Houston, Texas
| | - Robin L Weltman
- Professor and Director Advanced Education Program in Periodontics, Department of Periodontics and Dental Hygiene, The University of Texas School of Dentistry, Health Science Center at Houston, Houston, Texas
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Montero J. A Review of the Major Prosthetic Factors Influencing the Prognosis of Implant Prosthodontics. J Clin Med 2021; 10:jcm10040816. [PMID: 33671394 PMCID: PMC7921991 DOI: 10.3390/jcm10040816] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/28/2021] [Accepted: 02/15/2021] [Indexed: 11/16/2022] Open
Abstract
Background: The treatment plan of prosthetic restorations supported by dental implants requires comprehensive scientific knowledge to deliver prostheses with good prognosis, even before the implant insertion. This review aims to analyze the main prosthetic determinants of the prognosis of implant-supported prostheses. Methods: A comprehensive review of the literature was conducted with a PICO (Patient Intervention Comparison Outcomes) question: “For partially or complete edentulous subjects treated with implant-supported prostheses, which prosthetic factors could affect clinical outcomes?”. A literature search was performed electronically in PubMed (MEDLINE), Scopus and Cochrane Library with the following equation [PROGNOS * OR RISK] FACTOR IMPLANT DENTAL, and by hand search in relevant journals and throughout the selected papers. Results: This revision was carried out based on 50 papers focused on several prosthodontics-related risk factors that were grouped as follows: implant-connection, loading protocol, transmucosal abutments, prosthetic fit, provisionalization, type of retention, impression technique, fabrication technique, and occlusion. More than a half of the studies were systematic reviews (30%), meta-analysis (16%), or prospective evaluations of prosthesis with various kinds of events (18%). However, narrative reviews of literature (14%) and in vitro/animal studies (16%) were also found. Conclusions: The current literature provides insufficient evidence for most of the investigated topics. However, based on the accumulated data, it seems reasonable to defend that the best treatment approach is the use of morse taper implants with transmucosal abutments, recorded by means of rigidly splinted copings through the pick-up technique, and screwed by milled prosthesis occlusally adjusted to minimize functional overloading.
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Affiliation(s)
- Javier Montero
- Department of Surgery, University of Salamanca, 37007 Salamanca, Spain
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Kissa J, El Kholti W, Chemlali S, Kawtari H, Laalou Y, Albandar JM. Prevalence and risk indicators of peri-implant diseases in a group of Moroccan patients. J Periodontol 2020; 92:1096-1106. [PMID: 33306841 DOI: 10.1002/jper.20-0549] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/01/2020] [Accepted: 12/03/2020] [Indexed: 11/08/2022]
Abstract
BACKGROUND To report the prevalence of peri-implant diseases in a North African patient population, and to assess the concurrent associations of patient- and implant-level characteristics with probing depth and bone loss around dental implants METHODS: A total of 642 implants in 145 subjects were followed up for a mean 6.4 years. At the last follow-up visit the subjects were examined clinically and radiographically to assess the status of peri-implant tissues and teeth. Data analysis used the generalized linear mixed models RESULTS: The prevalence of peri-implant mucositis and peri-implantitis were 82.1% and 41.4% at the subject level, and 68.4% and 22.7% at the implant level, respectively. Inadequate plaque control, peri-implant inflammation, history of previous implant failures, and pain/discomfort at the implant site were significantly associated with both outcomes (increased probing depth and bone loss). Diabetes mellitus, inadequate implant restoration, single restorations (versus multi-unit), cement-retained restorations, and presence of occlusal wear facets on teeth were significantly associated with one of the two outcomes. Implants placed in the lower anterior jaw region had the most favorable outcome. Smoking, history of periodontitis, and type of implant surface did not show significant associations with higher frequency of peri-implant diseases in the multivariable analysis. CONCLUSIONS Peri-implant diseases are prevalent in this North African patient population. Multiple subject- and implant-level variables were associated with peri-implant diseases. Risk assessment of these effects should consist of a concurrent inclusion of these factors in multivariable analyses that also adjust for the complex variance structure of the oral environment.
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Affiliation(s)
- Jamila Kissa
- Department of Periodontology, University of Hassan II of Casablanca, Casablanca, Morocco
| | - Wafa El Kholti
- Department of Periodontology, University of Hassan II of Casablanca, Casablanca, Morocco
| | - Sihame Chemlali
- Department of Periodontology, University of Hassan II of Casablanca, Casablanca, Morocco
| | | | | | - Jasim M Albandar
- Department of Periodontology and Oral Implantology, School of Dentistry, Temple University, Philadelphia, PA, USA
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Alqahtani M. Influence of moderate cigarette-smoking on the peri-implant clinicoradiographic inflammatory parameters around cement- and screw-retained dental implants. J ORAL IMPLANTOL 2020; 47:473-477. [PMID: 33270836 DOI: 10.1563/aaid-joi-d-19-00352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim was to assess the influence of moderate cigarette-smoking on the clinical (bleeding on probing [BoP] and probing depth [PD]) and radiographic (crestal bone resorption [CBR]) around cement- and screw-retained dental implants at 5 years' follow-up. A questionnaire was used to collect information about age, gender, smoking history, duration of implants in function, jaw location of the implant, and daily toothbrushing and flossing. Peri-implant BoP, PD and CBR were measured in all groups. Group comparisons were performed using one-way analysis of variance and for multiple comparisons, the Bonferroni Post hoc adjustment test was performed. Level of significance was set at P<0.05. Forty-eight patients (25 smokers and 23 non-smokers) had cement-retained dental implants; and 48 (24 smokers and 24 non-smokers) had screw-retained dental implants. Among patients with cement and screw-retained dental implants, PD (P<0.05) and CBR (P<0.05) were significantly higher among smokers than non-smokers. The peri-implant sites that demonstrated BoP were statistically significantly higher among non-smokers (P<0.05) than smokers among patients with cement- and screw-retained dental implants. There was no statistically significant difference in peri-implant PD and CBR among smokers with cement- and screw-retained dental implants. Among non-smokers with cement and screw-retained dental implants, there was no statistically significant difference in BoP, PD and CBR. Cigarette-smoking is associated with an increased PD and CBR around cement- and screw-retained dental implants. Cigarette-smoking increases peri-implant soft tissue inflammation as well as loss of crestal bone and this relationship is independent of the type of implant retention protocol used.The author recommends that cement- and screw-retained dental implants are suitable for prosthesis restoration in non-smokers. Further studies on dual-smokers (individuals smoking cigarettes and other forms of tobacco products) are needed related to the clinicoradiographic inflammatory parameters around cement- and screw-retained dental implants.
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Affiliation(s)
- Mana Alqahtani
- University of Tabouk Medicine Tabouk SAUDI ARABIA Tabouk Tabouk 00000 University of Tabouk
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Camatta HP, Ferreira RM, Ferrairo BM, Strelhow SS, Rubo JH, Mori AA, Ferruzzi F. Mechanical Behavior and Fracture Loads of Screw-Retained and Cement-Retained Lithium Disilicate Implant-Supported Crowns. J Prosthodont 2020; 30:690-697. [PMID: 33245170 DOI: 10.1111/jopr.13298] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
PURPOSE To evaluate the fatigue survival, fracture loads and failure modes of monolithic lithium disilicate screw-retained crowns, attached to titanium insert, and cement-retained crowns. MATERIALS AND METHODS Internal tapered connection implants, embedded in acrylic resin at 30° inclination, were restored with lithium disilicate restorations, simulating a maxillary premolar (n = 20), with different designs: screw-retained titanium base abutment-crowns, and cement-retained crowns. The specimens were submitted to cyclic mechanical loading (1.2 × 106 cycles with a load of 0-250 N at 2 Hz). Surviving specimens were subjected to single load to fracture in a universal testing machine and failure modes were determined with the aid of an optical microscope. Maximum load values were analyzed statistically using the t-test and differences in failure modes were analyzed using the chi-squared test (α = 0.05). RESULTS All specimens survived the cyclic mechanical loading. Fracture load was significantly higher for screw-retained crowns (821.69 ±196.71 N) than the cement-retained crowns (577.03 ± 137.75 N) (p = 0.005). Ceramic failure was the predominant mode, with no statistical difference between groups. CONCLUSIONS Screw-retained and cement-retained lithium disilicate crowns survived the cyclic mechanical loading. The use of titanium inserts to support a monolithic restoration enhances the fracture strength of the crown/abutment system.
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Affiliation(s)
| | - Rodrigo Melim Ferreira
- Department of Dentistry, Ingá University Center- UNINGÁ and Maringá State University, Maringá, Brazil
| | - Brunna Mota Ferrairo
- Department of Periodontics and Prosthodontics, Bauru Dental School/University of São Paulo, Bauru, Brazil
| | - Samira Sandy Strelhow
- Department of Periodontics and Prosthodontics, Bauru Dental School/University of São Paulo, Bauru, Brazil
| | - José Henrique Rubo
- Department of Periodontics and Prosthodontics, Bauru Dental School/University of São Paulo, Bauru, Brazil
| | - Aline Akemi Mori
- Department of Dentistry, Ingá University Center- UNINGÁ and Maringá State University, Maringá, Brazil
| | - Fernanda Ferruzzi
- Department of Dentistry, Ingá University Center- UNINGÁ and Maringá State University, Maringá, Brazil.,Department of Dentistry, Maringá State University, Maringá, PR, Brazil
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Retrospective Clinical Study of a Freely Removable Implant-Supported Fixed Dental Prosthesis by a Microlocking System. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7929585. [PMID: 33204715 PMCID: PMC7655254 DOI: 10.1155/2020/7929585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 11/17/2022]
Abstract
This retrospective clinical study was conducted to evaluate the clinical usefulness of a freely removable microlocking implant prosthesis (MLP) that was developed to overcome the problems with conventional implant prostheses. A total of 54 patients (male: 31, female: 23) and 100 implant prostheses were included. Patients were divided into three groups such as 6-12 months, 12-18 months, and 18-24 months according to the used period after implant prosthesis delivery, and the patients in each group were recalled for examinations of survival rate, marginal bone resorption, peri-implant soft tissue indices, and complications. The prosthetic complications were analysed by combining the recorded chart data during the periodic checks including the last call for this study. During a 2-year observation period, all the implants showed a 100% survival rate without clinical mobility and functional problems. There was no significant difference in marginal bone resorption, plaque index, and bleeding index over the observation period after implant prosthesis delivery. Probing depth of the 18-24 months group (1.5 ± 0.19 mm) was significantly lower than that of the 6-12 months group (p < 0.05). The main complication was abutment loosening (4%), followed by implant prosthesis fracture (2%) and food impaction (2%) which were recorded. Within the limits of the present study, the implant prostheses with MLP are considered to be an applicable and predictable treatment method.
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Cruz RS, Lemos CAA, de Batista VES, Yogui FC, Oliveira HFF, Verri FR. Narrow-diameter implants versus regular-diameter implants for rehabilitation of the anterior region: a systematic review and meta-analysis. Int J Oral Maxillofac Surg 2020; 50:674-682. [PMID: 33158693 DOI: 10.1016/j.ijom.2020.10.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 09/16/2020] [Accepted: 10/02/2020] [Indexed: 12/26/2022]
Abstract
The aim of this systematic review and meta-analysis was to evaluate studies comparing implant survival rates, marginal bone loss (MBL), and mechanical and biological complication rates between narrow-diameter implants (NDIs) and regular-diameter implants (RDIs) used for oral rehabilitation in the anterior region. The review was conducted according to the PRISMA checklist. Two independent reviewers performed a comprehensive search of the PubMed/MEDLINE, Embase, Scopus, and Cochrane Library databases for studies published until May 2020. A total of 843 implants (484 NDIs and 359 RDIs) were included. No significant difference in implant survival rate (risk difference (RD) 0.01, 95% confidence interval (CI) -0.01 to 0.03; P=0.34), MBL (standardised mean difference -0.51mm, 95% CI -1.29 to 0.26mm; P=0.19), mechanical complications (RD 0.01, 95% CI -0.02 to 0.04; P=0.40), or biological complications (RD 0.01, 95% CI -0.09 to 0.11; P=0.85) was found between the implant groups. Within the limitations of this study, it is concluded that NDIs are an effective alternative to RDIs due to similar survival rates, MBL, and mechanical and biological complication rates. However, future studies are highly encouraged due to the small number of interventional studies on this topic.
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Affiliation(s)
- R S Cruz
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP - Universidade Estadual Paulista, Campus of Aracatuba, Sao Paulo, Brazil.
| | - C A A Lemos
- Department of Dentistry, Federal University of Juiz de Fora (UFJF), Campus Governador Valadares, Governador Valadares, MG, Brazil
| | - V E S de Batista
- Department of Prosthodontics, Presidente Prudente Dental School, University of the West of São Paulo (UNOESTE), Presidente Prudente, Brazil
| | - F C Yogui
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP - Universidade Estadual Paulista, Campus of Aracatuba, Sao Paulo, Brazil
| | - H F F Oliveira
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP - Universidade Estadual Paulista, Campus of Aracatuba, Sao Paulo, Brazil
| | - F R Verri
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, UNESP - Universidade Estadual Paulista, Campus of Aracatuba, Sao Paulo, Brazil
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Schoenbaum TR. Science in the Practice of Clinical Dentistry. Dent Clin North Am 2020; 64:609-619. [PMID: 32888511 DOI: 10.1016/j.cden.2020.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This article informs dental clinicians on the essential workings of scientific research and statistical analyses. It provides clinicians with the essential knowledge necessary to understand and review scientific work.
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Affiliation(s)
- Todd R Schoenbaum
- UCLA, 10833 Le Conte Avenue, CHS, Room B3-034, Los Angeles, CA 90095, USA.
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