1
|
Shen X, Yang S, Xu Y, Qi W, He F. Marginal bone loss of tissue- or bone-level implants after simultaneous guided bone regeneration in the posterior mandibular region: A retrospective cohort study. Clin Implant Dent Relat Res 2023; 25:68-76. [PMID: 36239210 DOI: 10.1111/cid.13144] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE To analyze the marginal bone loss (ΔMBL) of tissue- or bone-level implants after placed with simultaneous guided bone regeneration (GBR). MATERIALS AND METHODS A total of 151 patients who received 104 tissue-level or 128 bone-level implants placement with simultaneous GBR in the mandibular posterior region between January 2011 and December 2016 were included in this study. The marginal bone level (MBL) was recorded using the radiographic data obtained at implant placement, second-stage surgery, and the follow-up visit. Generalized estimating equation (GEE) was used to compare the ΔMBL of tissue- and bone-level implants, and the influencing factors of ΔMBL were further analyzed. RESULTS At the last follow-up visit, the MBL of tissue-level implants was 0.73 ± 0.86 mm, above the rough-smooth interface, while that of bone-level implants was 0.82 ± 1.05 mm, above the implant platform. The ΔMBL of tissue-level implants was 1.03 mm, which was slightly higher than 0.81 mm of bone-level implants, but there was no significant difference (p > 0.05). No contributing factor associated with ΔMBL was identified by multivariate regression analysis in this study. CONCLUSION Within the limits of this retrospective analysis, the ΔMBL of tissue-level implants is similar to that of bone-level implants after placed with simultaneous GBR, and both types of implants can achieve desirable marginal bone stability.
Collapse
Affiliation(s)
- Xiaoting Shen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Sijia Yang
- Department of prosthodontics, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yangbo Xu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Wenting Qi
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Fuming He
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| |
Collapse
|
2
|
Guastaldi FPS, Queiroz TP, Marques DO, Santos ABS, Molon RS, Margonar R, Guastaldi AC. Comparative Evaluation of Implants with Different Surface Treatments Placed in Human Edentulous Mandibles: A 1-Year Prospective Study. J Maxillofac Oral Surg 2022; 21:815-823. [PMID: 36274893 PMCID: PMC9474755 DOI: 10.1007/s12663-021-01600-6] [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: 02/16/2021] [Accepted: 05/28/2021] [Indexed: 10/21/2022] Open
Abstract
The aims of this study were to analyze prospectively and comparatively the peri-implant bone crest levels, bone density, stability and success rate of implants with different surface treatments in human edentulous mandibles. Twenty edentulous patients were selected. Four different implants were placed between the mental foramen. Four groups were evaluated: (1) laser-modified surface (LASER), (2) surface modified by laser with deposition of apatites (LASER + HA), (3) surface modified by double acid etching (ACID, Implacil De Bortoli) and (4) surface modified by sandblasting and acid etching (SLActive®, Straumann). Clinical, radiographic, resonance frequency and tomographic analyses were used. After 4 months, mandibular fixed implant prostheses were installed. Clinical and radiographic analyses were performed at times T0 (immediately after implant placement), T1 (15 days), T2 (30 days), T3 (60 days), T4 (90 days), T5 (120 days), T6 (180 days) and T7 (360 days), post-implant placement. The resonance frequency analysis (RFA) was measured at T0, T4, T6 and T7. The tomographic analysis was performed at T0, T4 and T7. In the radiographic bone density analysis, a statistical difference was found between the SLActive® and LASER + HA groups at T4 (p < 0.05). Statistical differences were observed in RFA at T4 (90 days), between the SLActive® and LASER groups (p < 0.05) and between the SLActive® and LASER + HA groups (p < 0.05). At T6 and T7, statistical differences were found between the SLActive® group and all other implant surfaces (p < 0.01). The experimental surfaces analyzed showed encouraging positive outcomes compared to those of the SLActive® surface. Long-term follow-up should be performed to confirm these results.
Collapse
Affiliation(s)
- Fernando P. S. Guastaldi
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araraquara, SP Brazil
- Skeletal Biology Research Center, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Thier Research Building, 50 Blossom St, Boston, MA 513A USA
| | - Thallita P. Queiroz
- Department of Health Sciences, University Center of Araraquara (UNIARA), Araraquara, SP Brazil
| | - Daniela O. Marques
- Department of Health Sciences, University Center of Araraquara (UNIARA), Araraquara, SP Brazil
| | - Anne B. S. Santos
- Department of Health Sciences, University Center of Araraquara (UNIARA), Araraquara, SP Brazil
| | - Rafael S. Molon
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araraquara, SP Brazil
| | - Rogerio Margonar
- Department of Health Sciences, University Center of Araraquara (UNIARA), Araraquara, SP Brazil
| | - Antonio C. Guastaldi
- Department of Physical Chemistry, Institute of Chemistry, São Paulo State University (Unesp), Araraquara, SP Brazil
| |
Collapse
|
3
|
Peri-Implant Marginal Bone Changes around Dental Implants with Platform-Switched and Platform-Matched Abutments: A Retrospective 5-Year Radiographic Evaluation. J Pers Med 2022; 12:jpm12081226. [PMID: 36013175 PMCID: PMC9409950 DOI: 10.3390/jpm12081226] [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: 07/07/2022] [Revised: 07/20/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022] Open
Abstract
Preserving the marginal bone level (MBL) is essential for the long-term success of dental implant therapy, and bone remodeling around dental implants is considered to vary with time. Numerous studies comparing the platform-switching (PS) and platform-matching (PM) dental implants have indicated that PS dental implants showed a lesser reduction for the MBL, and the majority of them had a relatively short period. This study aimed to evaluate vertical and horizontal bone defects by using digital periapical radiographs to examine the changes in MBL around PM and PS dental implants over 5 years after functional loading. The vertical MBL (vMBL) was measured from the implant–abutment junction to the first bone-to-implant contact. The horizontal MBL (hMBL) was measured from the implant–abutment junction to the bone crest. All data were presented as means ± standard errors. Paired and independent t-tests with Welch’s correction were used to analyze the data. A total of 61 dental implants in 38 patients after 5 years of functional loading were evaluated. Over time, PS dental implants were more likely to gain bone; by contrast, PM dental implants were more likely to lose bone during the observation time. Changes in vMBL for PS dental implants were significantly less than those for PM dental implants at 1-year (p = 0.045), 3-year (p = 0.021), and 5-year (p = 0.010) loading. Likewise, changes in hMBL for PS dental implants were significantly smaller than in those for PM dental implants at 3-year (p = 0.021) and 5-year (p = 0.006) loading; however, the changes were minimal in both approaches. PS dental implants had a significant increment in the percentage of bone integration, whereas that for PM dental implants dropped over time, with no significance. In PS dental implants that occlude with natural teeth, vertical and horizontal bone gain was observed, and it was significant at 3 years (p = 0.023). A significant horizontal bone gain was observed in the opposing natural teeth at 3-year (p = 0.002) and 5-year loading (p = 0.002). The PS concept appears to preserve more MBL around dental implants by stabilizing the vMBL and hMBL over a 5-year period. A minimal marginal bone change was detected in both concepts. The opposing natural teeth at PS dental implants showed a favorable effect on marginal bone tissues.
Collapse
|
4
|
Comparative Study by Systematic Review and Meta-Analysis of the Peri-Implant Effect of Two Types of Platforms: Platform-Switching versus Conventional Platforms. J Clin Med 2022; 11:jcm11061743. [PMID: 35330067 PMCID: PMC8954366 DOI: 10.3390/jcm11061743] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/11/2022] [Accepted: 03/16/2022] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE The aim of the systematic review and meta-analysis carried out was to evaluate the effects of changing the prosthetic platform on peri-implant tissue after 1 year of prosthetic loading. MATERIAL AND METHODS In November 2020, an electronic search was carried out in PubMed, EMBASE, Web of Science, and Scopus databases with the aim of obtaining all the randomized clinical trials that had been published in the preceding 10 years comparing the effects on the peri-implant tissue of implants with a prosthetic platform change and implants with a conventional platform for at least 1 year after prosthetic loading. Randomized model meta-analyses of the selected studies were performed to compare the results of the two implant groups in terms of vertical maintenance of bone level and increased probing depth. RESULTS Nine studies were included, summing up a total of 475 implants with prosthetic platform exchange and 462 implants with a conventional platform. Implants with prosthetic platform exchange had less peri-implant bone loss than implants with a conventional platform (mean difference of 0.255 mm, statistically significant) but suffered a greater increase in probing depth (mean difference of 0.082 mm, not statistically significant). However, the probing depth from One Study Remove revealed a statistically significant increase of 0.190 mm in the prosthetic platform exchange group compared to the conventional platform group. CONCLUSION Implants with platform switching suffer less peri-implant bone loss after 1 year of loading than implants with a conventional platform. Further long-term studies are required to observe how these differences vary over time.
Collapse
|
5
|
Baer RA, Nölken R, Colic S, Heydecke G, Mirzakhanian C, Behneke A, Behneke N, Gottesman E, Ottria L, Pozzi A, Fügl A, Zechner W. Immediately provisionalized tapered conical connection implants for single-tooth restorations in the maxillary esthetic zone: a 5-year prospective single-cohort multicenter analysis. Clin Oral Investig 2022; 26:3593-3604. [PMID: 34997359 PMCID: PMC8979890 DOI: 10.1007/s00784-021-04328-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 11/29/2021] [Indexed: 11/04/2022]
Abstract
Objectives This open, single-cohort, multicenter, prospective study investigated the efficacy of immediately provisionalized tapered conical connection implant for single-tooth restorations in the anterior and premolar regions of the maxilla after 5 years of function. Materials and methods All implants were placed in healed sites and immediately provisionalized. MBLs, soft-tissue parameters, and oral-health impact profile (OHIP) were evaluated at implant insertion, 6, 12, 24, 36, and 60 months. Paired Wilcoxon signed-rank tests and Kaplan–Meier survival analysis was used for statistical and implant survival/success analyses, respectively. Results Seventy-seven patients (81 implants) completed the 5-year follow-up. The 5-year cumulative survival and success rates were 97.8%, and the mean MBL change from implant insertion to 5 years was − 0.80 ± 1.13 mm. Optimal papilla index scores were observed at 90.1% of sites at 5 years compared with 32.8% of sites at insertion. Pink esthetic score, modified bleeding and plaque indices, and OHIP showed statistically significant improvement at the 5-year follow-up. Conclusions Immediately provisionalized tapered conical connection implants promote marginal bone stability and excellent esthetic outcomes after 5 years of function. Clinical relevance This treatment is a viable option for patients requiring immediately provisionalized single-tooth restorations in the esthetic zone and shows favorable long-term clinical outcomes, including marginal bone stability and excellent esthetics.
Collapse
Affiliation(s)
| | - Robert Nölken
- University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany.,Private Practice, Lindau, Germany
| | | | - Guido Heydecke
- University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Alexandra Behneke
- University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany
| | - Nikolaus Behneke
- University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany
| | | | | | | | - Alexander Fügl
- Dental University Clinic, Medical University of Vienna, Vienna, Austria
| | - Werner Zechner
- Dental University Clinic, Medical University of Vienna, Vienna, Austria
| |
Collapse
|
6
|
Palombo D, Rahmati M, Vignoletti F, Sanz-Esporrin J, Haugen HJ, Sanz M. Hard and soft tissue healing around implants with a modified implant neck configuration: An experimental in vivo preclinical investigation. Clin Oral Implants Res 2021; 32:1127-1141. [PMID: 34352137 PMCID: PMC9291855 DOI: 10.1111/clr.13812] [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: 02/03/2021] [Revised: 05/25/2021] [Accepted: 07/09/2021] [Indexed: 11/28/2022]
Abstract
Objectives Evaluate the dimensions and morphology of peri‐implant tissues around a modified dental implant designed with tissue level connection and a convergent transmucosal neck, when compared with a conventional bone level implant connected to a cylindrical machined titanium abutment. Material and methods Eight experimental animals were used for this in vivo investigation, in whom 16 test and 16 control implants were placed following a random allocation sequence. The following histological outcomes at 4 and 12 weeks were evaluated: morphology of peri‐implant tissues, the soft tissue height and thickness, the horizontal and vertical bone remodeling, and the bone to implant contact (BIC). Results In both early (4 weeks) and late (12 weeks) healing times, there were no statistically significant differences between test and control implants, with respect to the overall height and thickness of the peri‐implant hard and soft tissues. There was a tendency toward a more coronal free gingival margin (I‐FGM) at the buccal aspect of test when compared to control implants (at 4 weeks, difference of 0.97 mm (p = .572) and 0.30 mm (p = 1.000) at 12 weeks). Similarly, there was a tendency toward a more coronal position of the first bone to implant contact (I‐B) at the buccal aspect of test as compared to control implants (1.08 mm (p = 0.174) at 4 weeks and 0.83 mm (p = 0.724) at 12 weeks). Conclusions Hard and soft tissue healing occurred at both implant types with no statistically significant differences. Test implants tended to present a more coronal gingival margin (FGM) and first bone to implant contact (B).
Collapse
Affiliation(s)
- David Palombo
- Section of Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Maryam Rahmati
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Norway
| | - Fabio Vignoletti
- Section of Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Javier Sanz-Esporrin
- Section of Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain.,ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, Madrid, Spain
| | - Håvard Jostein Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Norway
| | - Mariano Sanz
- Section of Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain.,ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, Madrid, Spain
| |
Collapse
|
7
|
Wimmer L, Petrakakis P, El-Mahdy K, Herrmann S, Nolte D. Implant-prosthetic rehabilitation of patients with severe horizontal bone deficit on mini-implants with two-piece design-retrospective analysis after a mean follow-up of 5 years. Int J Implant Dent 2021; 7:71. [PMID: 34318379 PMCID: PMC8316513 DOI: 10.1186/s40729-021-00353-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 05/05/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND As a consequence of tooth loss due to trauma or extraction, a reduced alveolar crest volume limits the deployment of standard implants in certain patient cases. For this reason, minimal-invasive treatment with mini-dental implants (MDI) might be an option to allow implant treatment even in cases with severe horizontal bone loss without augmentation measures. The aim of this retrospective cohort study was to investigate clinical and radiological implant, as well as patient-related parameters after treatment with MDI. RESULTS Clinical and radiological records of 19 female (82.6%) and 4 male patients (17.4%) (N = 23), who received 52 mini-dental implants with a two-piece design in a single surgical center between November 2011 and October 2018, were retrospectively analyzed. Implants were submitted to conventional loading on different types of screwed superstructures. Crestal bone loss was measured on standardized periapical radiographs. Patient-related outcome parameters (PROMs) were recorded during follow-up period. Mean clinical and radiological follow-up was 69.6 months (5.8 years) and 51.6 months (4.3 years), respectively. Three implants were lost in two patients, leading to an implant survival rate of 94.2%. Mean radiological crestal bone loss was 1.6 mm. Both amount of peri-implant recession and crestal bone loss were significantly correlated (r = 0.65; p < 0.001). Likewise, a significant correlation was observed between deeper probing depths and increased peri-implant bone loss (r = 0.41; p = 0.012). Alveolar ridges with a reduced alveolar crest width were significantly correlated with higher peri-implant bone loss as well (r = - 0.33; p = 0.011). No prosthetic complications were reported during follow-up. Extent of midfacial recession and papilla height loss had a significant negative impact on most of the PROMs. CONCLUSIONS Treatment with MDI seems to be a successful alternative treatment option, especially for elderly patients with reduced crest width at implant sites. Due to the good clinical results and high survival and success rates, this treatment option was associated with high patient satisfaction. Despite the promising results, particular consideration should be given to appropriate treatment planning in these patients due to the strong correlation between peri-implant soft-tissue parameters, crestal bone loss, and reduced alveolar crest width.
Collapse
Affiliation(s)
- Lukas Wimmer
- Clinic for Oral & Maxillofacial Surgery mkg-muc®, Munich, Germany.,Private Dental Practice, St. Johann, Salzburg, Austria
| | | | - Karim El-Mahdy
- Department of Restorative Dentistry & Periodontology, Dental School, Ludwig Maximilian University, Munich, Germany
| | - Surian Herrmann
- Clinic for Oral & Maxillofacial Surgery mkg-muc®, Munich, Germany
| | - Dirk Nolte
- Clinic for Oral & Maxillofacial Surgery mkg-muc®, Munich, Germany. .,Ruhr University Bochum, Bochum, Germany.
| |
Collapse
|
8
|
Mortazavi H, Khodadoustan A, Kheiri A, Kheiri L. Bone loss-related factors in tissue and bone level dental implants: a systematic review of clinical trials. J Korean Assoc Oral Maxillofac Surg 2021; 47:153-174. [PMID: 34187956 PMCID: PMC8249186 DOI: 10.5125/jkaoms.2021.47.3.153] [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: 10/25/2020] [Revised: 01/19/2021] [Accepted: 02/05/2021] [Indexed: 12/18/2022] Open
Abstract
Dental implants are popular for dental rehabilitation after tooth loss. The goal of this systematic review was to assess bone changes around bone-level and tissue-level implants and the possible causes. Electronic searches of PubMed, Google Scholar, Scopus, and Web of Science, and a hand search limited to English language clinical trials were performed according to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) guidelines up to September 2020. Studies that stated the type of implants used, and that reported bone-level changes after insertion met the inclusion criteria. The risk of bias was also evaluated. A total of 38 studies were included. Eighteen studies only used bone-level implants, 10 utilized tissue-level designs and 10 observed bone-level changes in both types of implants. Based on bias assessments, evaluating the risk of bias was not applicable in most studies. There are vast differences in methodologies, follow-ups, and multifactorial characteristics of bone loss around implants, which makes direct comparison impossible. Therefore, further well-structured studies are needed.
Collapse
Affiliation(s)
- Hamed Mortazavi
- Department of Oral Medicine, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amin Khodadoustan
- Member of Iranian Association of Periodontology, Private Practice, Tehran, Iran
| | - Aida Kheiri
- Student Research Committee, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Lida Kheiri
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Islamic Azad University, Isfahan (Khorasgan) Branch, Isfahan, Iran
| |
Collapse
|
9
|
Kumar V, Arya G, Singh P, Chauhan P. A meta analysis for evaluation of marginal bone level changes at dental implants. Natl J Maxillofac Surg 2021; 12:13-16. [PMID: 34188395 PMCID: PMC8191558 DOI: 10.4103/njms.njms_179_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/25/2020] [Accepted: 11/04/2020] [Indexed: 11/04/2022] Open
Abstract
Aim The aim of this study was to assess the marginal bone level changes at dental implants after 1 year in function. Methods Detailed searches from PubMed databases were made. A MEDLINE search (PubMed) published in the English language from 1980 to December 2018 was included in this study. Results The electronic database research (MEDLINE) produced 166 corresponding articles. One hundred and twenty studies were excluded on the basis of abstract while the 46 researches were used chosen for full-text examination after the title and abstract testing, and 41 studies were excluded that did not meet the requirements of our inclusion and exclusion criteria. A total of 5 studies for a quantitative analysis were taken into account. Conclusion Within the limits of the study, the mean marginal bone loss (MBL) was found to be 0.56 mm. A statistically significant difference in the MBL was found between the various studies.
Collapse
Affiliation(s)
- Varun Kumar
- Department of Prosthodontics and Oral Implantology, Seema Dental College and Hospital, Rishikesh, Uttarakhand, India
| | - Geeta Arya
- Department of Prosthodontics and Oral Implantology, Seema Dental College and Hospital, Rishikesh, Uttarakhand, India
| | - Pranshu Singh
- Facedentiss Clinic, IIMT Lifeline Hospital, Meerut, Uttar Pradesh, India
| | | |
Collapse
|
10
|
Garaicoa-Pazmino C, Mendonça G, Ou A, Chan HL, Mailoa J, Suárez-López Del Amo F, Wang HL. Impact of mucosal phenotype on marginal bone levels around tissue level implants: A prospective controlled trial. J Periodontol 2020; 92:771-783. [PMID: 33107977 DOI: 10.1002/jper.20-0458] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 09/20/2020] [Accepted: 09/29/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND The aim of this 1-year prospective clinical trial was to compare clinical parameters and marginal bone levels (MBLs) around tissue level implants with a partially smooth collar between patients with thin (≤2 mm) and thick (>2 mm) vertical mucosal phenotypes. METHODS Thirty patients needing a single dental implant were recruited and allocated to thin (n = 14) or thick (n = 16) phenotype groups. Post-restoration, clinical (probing depth, recession, width of keratinized mucosa, bleeding on probing, suppuration, implant mobility, plaque index, and gingival index) and radiographic bone level measurements were recorded at different timepoints for 1 year. RESULTS Twenty-six patients (13 per group) completed the 1-year examination. No implants were lost (100% survival rate). There were no significant differences (P >0.05) between thin and thick vertical mucosal phenotypes for any clinical parameter or for the radiographic MBL. CONCLUSIONS Tissue level implants at 1 year of function placed in thin vertical mucosa achieved similar clinical parameters and radiographic MBLs as those in thick tissue. The formation of the peri-implant supracrestal tissue height plays a key role in MBL than mucosal thickness in tissue level implant.
Collapse
Affiliation(s)
- Carlos Garaicoa-Pazmino
- Department of Periodontology, School of Dentistry, Oregon Health & Science University, Portland, OR, USA.,School of Dentistry, Espiritu Santo University, Samborondon, Ecuador
| | - Gustavo Mendonça
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Alice Ou
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Hsun-Liang Chan
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | | | | | - Hom-Lay Wang
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| |
Collapse
|
11
|
Taheri M, Akbari S, Shamshiri AR, Shayesteh YS. Marginal bone loss around bone-level and tissue-level implants: A systematic review and meta-analysis. Ann Anat 2020; 231:151525. [PMID: 32380195 DOI: 10.1016/j.aanat.2020.151525] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 03/19/2020] [Accepted: 04/07/2020] [Indexed: 12/15/2022]
Abstract
PURPOSE To review the scientific evidence regarding the marginal bone loss around the tissue-level and bone-level implants. METHODS MEDLINE-PubMed and EMBASE databases were searched for the relevant English articles (up to February 2019) assessing the marginal bone loss (MBL) as the primary outcome. To be selected, studies were supposed to directly mention "tissue-level" and "bone-level" implants or implants with and without a smooth neck. Relevant data were extracted and meta-analysis was performed to evaluate the effect of implant neck design. RESULTS A total of 19 studies (10 clinical, and 9 RCT studies) were included for qualitative analysis. There was a vast heterogeneity between studies in terms of implant designs and study protocol. Out of 19 articles included, 11 studies reached to a statistically significant difference in MBL between the groups; however, the differences were not found to be clinically relevant. Bone-level implants with platform-switched abutments in most of the cases showed better marginal bone stability compared to tissue-level implants or bone-level implants with matching abutments. Seven RCTs with 12 months follow-up data were selected for meta-analysis (I2=93%; heterogeneous), and the results showed less MBL around bone-level implants compared to tissue-level group (WMD=-0.21mm; 95% CI -0.42, 0.00; P=0.06). CONCLUSION The available data regarding comparison of MBL around bone-level and tissue-level implants are heterogeneous. Bone-level implants with platform switching may better preserve crestal bone.
Collapse
Affiliation(s)
- Mina Taheri
- Department of Periodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
| | - Solmaz Akbari
- Department of Periodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
| | - Ahmad Reza Shamshiri
- Research Center for Caries Prevention, Dentistry Research Institute, Department of Community Oral Health, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
| | | |
Collapse
|
12
|
Vianna TT, Taiete T, Casarin RCV, Giorgi MCC, Aguiar FHB, Silvério KG, Nociti Júnior FH, Sallum EA, Casati MZ. Evaluation of peri-implant marginal tissues around tissue-level and bone-level implants in patients with a history of chronic periodontitis. J Clin Periodontol 2019; 45:1255-1265. [PMID: 30107048 DOI: 10.1111/jcpe.12999] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 07/03/2018] [Accepted: 08/07/2018] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To evaluate clinical and radiographic characteristics in peri-implant marginal tissues in patients with a history of chronic periodontitis, rehabilitated using tissue-level or bone-level implants. MATERIAL AND METHODS Using a split-mouth design, 20 patients with a history of chronic periodontitis were selected and received two different implants, tissue-level group (n = 20) and the bone-level group (n = 20). Peri-implant probing depth, relative peri-implant mucosal margin position, relative peri-implant clinical attachment level, peri-implant plaque index and peri-implant bleeding on probing were evaluated at prosthesis installation, 1, 3, 6, 12 and 24 months after implant loading. Radiographic marginal bone level was evaluated at implant insertion, prosthesis installation, 6 and 24 months after implant loading. RESULTS The mean difference of peri-implant marginal bone resorption from implant installation to 24 months in function was 0.75 ± 1.12 mm for the tissue-level group and 0.70 ± 0.72 mm for the bone-level group. No statistically significant difference was found between groups at all assessment periods for clinical and radiographic peri-implant evaluation. CONCLUSION Under a rigid supportive therapy, both approaches performed likewise regarding clinical and radiographic parameters for rehabilitation of patients with a history of chronic periodontitis.
Collapse
Affiliation(s)
- Tiago T Vianna
- Division of Periodontics, Piracicaba Dental School/State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Tiago Taiete
- Division of Periodontics, Piracicaba Dental School/State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Renato C V Casarin
- Division of Periodontics, Piracicaba Dental School/State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Maria C C Giorgi
- Division of Restorative Dentistry, Amazonas State University, Manaus, Amazonas, Brazil
| | - Flávio Henrique B Aguiar
- Division of Restorative Dentistry, Piracicaba Dental School/State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Karina G Silvério
- Division of Periodontics, Piracicaba Dental School/State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Francisco H Nociti Júnior
- Division of Periodontics, Piracicaba Dental School/State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Enilson A Sallum
- Division of Periodontics, Piracicaba Dental School/State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Márcio Z Casati
- Division of Periodontics, Piracicaba Dental School/State University of Campinas, Piracicaba, São Paulo, Brazil
| |
Collapse
|
13
|
Clinical Factors and Cellular Responses of In Situ Human Alveolar Bone–Derived Mesenchymal Stromal Cells Associated With Early Periimplant Marginal Bone Loss. IMPLANT DENT 2019; 28:421-429. [DOI: 10.1097/id.0000000000000904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
14
|
Messias A, Nicolau P, Guerra F. Titanium dental implants with different collar design and surface modifications: A systematic review on survival rates and marginal bone levels. Clin Oral Implants Res 2018; 30:20-48. [PMID: 30466192 DOI: 10.1111/clr.13389] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 11/01/2018] [Accepted: 11/04/2018] [Indexed: 01/15/2023]
Abstract
AIM The aim of this study was to compare clinical and radiographic outcomes of dental implants with different neck characteristics. METHODS A protocol-oriented search aimed at the question: "In patients subjected to tooth replacement with screw-type dental implants does the modification of the implant neck macro- or microgeometry contribute to the improvement of survival rates and maintenance of the peri-implant marginal bone levels?" Primary outcomes were survival and marginal bone level (MBL) changes evaluated on randomized controlled trials with >10 participants and follow-up >1 year. Risk of bias was evaluated using the Cochrane Collaboration's tool. The review follows the PRISMA statement. RESULTS Forty-three studies compared: (a) One- versus two-piece implants (N = 7); (b) Two-piece implants with different neck characteristics (machined and rough collars, microthreads, LASER microtexturing) (N = 21); (c) Two-piece implants with macrogeometry modifications (tapering, back-tapering, and scalloping) (N = 6). One- and two-piece implants showed similar survival (RR = 0.45, 95% CI: [0.12, 1.66], p = 0.23) and MBL changes (WMD = 0.09 mm, 95% CI: [-0.27, 0.45], p = 0.64) at 1-year post-loading. Machined collar implants have higher risk of early failure than rough collar implants (RR = 3.96, 95% CI: [1.12, 13.93], p = 0.03) and 0.43 mm higher bone resorption (95% CI: [0.0, 0.86], p = 0.05). Microthreads (WMD = 0.07 mm, 95% CI: [-0.01, 0.15], p = 0.10) and LASER microtexturing (WMD = 0.15 mm, 95% CI: [-0.35, 0.65], p = 0.56) do not reduce bone resorption. Scalloped implants have 1.26 mm higher resorption (95% CI: [0.72, 2.00], p < 0.001). CONCLUSIONS One- and two-piece implants have similar survival and MBL changes. Rough collar implants have lower MBL changes than machined collar implants. Additional modifications to rough collars are irrelevant.
Collapse
Affiliation(s)
- Ana Messias
- Dentistry Department, Faculty of Medicine of the University of Coimbra, Coimbra, Portugal
| | - Pedro Nicolau
- Dentistry Department, Faculty of Medicine of the University of Coimbra, Coimbra, Portugal
| | - Fernando Guerra
- Dentistry Department, Faculty of Medicine of the University of Coimbra, Coimbra, Portugal
| |
Collapse
|
15
|
Heydecke G, Mirzakhanian C, Behneke A, Behneke N, Fügl A, Zechner W, Baer RA, Nölken R, Gottesman E, Colic S, Ottria L, Pozzi A. A prospective multicenter evaluation of immediately functionalized tapered conical connection implants for single restorations in maxillary anterior and premolar sites: 3-year results. Clin Oral Investig 2018; 23:1877-1885. [PMID: 30225678 DOI: 10.1007/s00784-018-2614-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 09/04/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVES This multicenter prospective clinical trial investigated immediately provisionalized, anodized, conical connection, tapered implants with platform shifting in maxillary anterior and premolar sites. MATERIALS AND METHODS Patients requiring single-tooth implant-supported restorations in maxillary anterior and premolar sites were enrolled. Implants were immediately provisionalized and evaluated at insertion, 6 months, and annually thereafter. Outcome measures were marginal bone level change (ΔMBL), cumulative survival rate (CSR), and success rate, soft-tissue parameters, and oral health impact profile (OHIP). ΔMBL and Pink Esthetic Score were analyzed using Wilcoxon signed-rank tests. CSR was calculated using life table analysis. Other soft-tissue parameters were analyzed using sign tests. RESULTS Of 94 enrolled patients (99 implants), 84 (88 implants) attended the 3-year follow-up. After an initial bone loss between implant insertion and 6 months (- 0.92 ± 1.23 mm), bone levels stabilized from 6 months to 3 years (0.13 ± 0.94 mm) with no significant change. The 3-year CSR was 98.9%, and the cumulative success rate was 96.9%. Papilla index scores of 2 or 3 were observed at 88.6% of sites at the 3-year visit compared with 32.8% at implant insertion. Improvements were observed for all other outcomes, including bleeding on probing, esthetics, plaque, and OHIP. CONCLUSIONS This restorative protocol was associated with high primary stability, patient satisfaction, stable bone levels, and an overall improvement of the soft tissue outcomes over a 3-year period. CLINICAL RELEVANCE The presented treatment is a viable option for single-tooth restorations of maxillary anterior teeth and premolars with successful short- to mid-long-term clinical outcomes.
Collapse
Affiliation(s)
- Guido Heydecke
- University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | | | - Alexandra Behneke
- University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany
| | - Nikolaus Behneke
- University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany
| | - Alexander Fügl
- School of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Werner Zechner
- School of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Russell A Baer
- University Associates in Dentistry, Chicago, IL, 60601, USA
| | - Robert Nölken
- University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany.,Private Practice, Lindau, Germany
| | | | | | | | | |
Collapse
|
16
|
Saleh MHA, Ravidà A, Suárez-López del Amo F, Lin GH, Asa'ad F, Wang HL. The effect of implant-abutment junction position on crestal bone loss: A systematic review and meta-analysis. Clin Implant Dent Relat Res 2018; 20:617-633. [DOI: 10.1111/cid.12600] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 01/27/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Muhammad H. A. Saleh
- Department of Periodontics and Oral Medicine; University of Michigan School of Dentistry; Ann Arbor Michigan
| | - Andrea Ravidà
- Department of Periodontics and Oral Medicine; University of Michigan School of Dentistry; Ann Arbor Michigan
| | | | - Guo-Hao Lin
- Department of Orofacial Sciences; University of California; San Francisco California
| | - Farah Asa'ad
- Department of Biomedical, Surgical & Dental Sciences; University of Milan; Milan Italy
| | - Hom-Lay Wang
- Department of Periodontics and Oral Medicine; University of Michigan School of Dentistry; Ann Arbor Michigan
| |
Collapse
|
17
|
Al Amri MD, Alfadda SA, Labban NY, Alasqah MN, Alshehri FA, Al-Rasheed AS. Comparison of Clinical, Radiographic, and Immunologic Inflammatory Parameters around Crestally and Subcrestally Placed Dental Implants: 5-Year Retrospective Results. J Prosthodont 2017; 27:3-9. [PMID: 28960636 DOI: 10.1111/jopr.12637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2017] [Indexed: 12/31/2022] Open
Abstract
PURPOSE To compare changes in clinical (bleeding on probing [BOP] and probing pocket depth [PPD]), radiographic (crestal bone loss [CBL]), and immunologic inflammatory (interleukin-1beta [IL-1β] and matrix metalloproteinase-9 [MMP-9]) parameters around crestally and subcrestally placed dental implants 5 years after implant placement. MATERIALS AND METHODS Fifty-two patients were divided into 2 groups: group 1 (n = 27): patients with single implants placed approximately 2 mm below the alveolar crest; group 2 (n = 25): patients with single implants placed at bone level. In both groups, peri-implant BOP, PPD, and CBL were measured, and levels of IL-1β and MMP-9 were determined in duplicates using enzyme-linked immunosorbent assay. Full-mouth debridement was performed biannually in both groups. Statistical analysis was performed using the Mann-Whitney U test (significance set at p < 0.05). RESULTS All measurements in groups 1 and 2 were performed 5.3 ± 0.2 and 5.2 ± 0.1 years after implant placement, respectively. The mean CBL was 1.2 ± 0.2 mm and 1.4 ± 0.2 mm in groups 1 and 2, respectively. There was no significant difference in mean BOP, PPD, CBL and in levels of IL-1β, and MMP-9 among implants in both groups. CONCLUSION Clinical, radiographic, and immunologic inflammatory parameters are comparable around crestally and subcrestally placed single dental implants up to 5 years after placement. The depth of implant placement appears to have no effect on clinical status and performance of single dental implants.
Collapse
Affiliation(s)
- Mohammad D Al Amri
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Sara A Alfadda
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Nawaf Y Labban
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed N Alasqah
- Department of Preventive Dental Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia
| | - Fahad A Alshehri
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Abdulaziz S Al-Rasheed
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| |
Collapse
|
18
|
Abduljabbar T, Javed F, Malignaggi VR, Vohra F, Kellesarian SV. Influence of implant location in patients with and without type 2 diabetes mellitus: 2-year follow-up. Int J Oral Maxillofac Surg 2017; 46:1188-1192. [PMID: 28499506 DOI: 10.1016/j.ijom.2017.04.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 02/12/2017] [Accepted: 04/18/2017] [Indexed: 11/28/2022]
Abstract
The aim of the present cross-sectional retrospective 2-year follow-up clinical study was to assess the influence of implant location on clinical and radiographic parameters around dental implants placed in patients with and without type 2 diabetes mellitus (T2DM). Twenty-seven patients with T2DM and 25 non-diabetic controls were included. Implants were classified into three zones according to their location: (1) anterior zone: implant/s replacing anterior teeth, (2) middle zone: implant/s replacing premolars, and (3) posterior zone: implant/s replacing molars. Peri-implant bleeding on probing (BOP), probing depth (PD), and crestal bone loss (CBL) were measured. P-values less than 0.05 were considered statistically significant. The mean age of patients with T2DM was 42.5 years and that of non-diabetic controls was 40.6 years. The mean fasting blood glucose levels of patients with and without T2DM were 74.5mg/dl (66-80mg/dl) and 82.5mg/dl (79-88.1mg/dl), respectively. The mean duration of T2DM was 4.3 years. There was no significant difference in BOP, PD, or CBL around implants placed in any of the zones in the jaws of patients with and without T2DM. There is no influence of implant location on clinical and radiographic parameters around dental implants placed in patients with and without T2DM.
Collapse
Affiliation(s)
- T Abduljabbar
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - F Javed
- Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, New York, USA
| | - V R Malignaggi
- Department of General Dentistry, Faculty of Dentistry, Universidad Santa Maria, Caracas, Venezuela
| | - F Vohra
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - S V Kellesarian
- Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, New York, USA.
| |
Collapse
|
19
|
Sesma N, Garaicoa-Pazmino C, Zanardi PR, Chun EP, Laganá DC. Assessment of Marginal Bone Loss around Platform-Matched and Platform-Switched Implants - A Prospective Study. Braz Dent J 2017; 27:712-716. [PMID: 27982184 DOI: 10.1590/0103-6440201601160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 11/01/2016] [Indexed: 11/22/2022] Open
Abstract
The aim of the present study was to perform a software-assisted radiographic assessment of the effect of platform-switching on marginal bone loss (MBL) around dental implants. Forty patients requiring a dental implant in non-grafted partially edentulous mandibles were enrolled and categorized into implants receiving a platform-matched abutment (control group) or implants with a platform-switched abutment (test group). Standardized digital periapical radiographs were taken at the time of implant placement (T0), at implant loading (T1) and 1-year after functional loading (T2). Software-assisted radiographic assessment of the MBL horizontal, vertical and area changes was performed and compared between time intervals (T1-T0, T2-T1 and T2-T0). Mean radiographic horizontal MBL (hMBL) and vertical MBL (vMBL) from implant placement to 1-year after implant loading (T2-T0) were significantly increased around platform-matched when compared to platform-switched abutments (1.04 mm vs 0.84 mm, p<0.05) and (0.99 mm vs 0.82 mm, p<0.05), respectively. Additionally, bone loss area (BLa) was greater (0.77 mm2 vs 0.63 mm2; p<0.05) for platform-matched compared to platform-switched abutments. Platform-switching has a positive impact upon the amount of bone modeling after loading implants with internal hexagon connection.
Collapse
Affiliation(s)
- Newton Sesma
- Department of Prosthodontics, Dental School, USP - Universidade de São Paulo, SP, São Paulo, Brazil
| | - Carlos Garaicoa-Pazmino
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Piero R Zanardi
- Department of Prosthodontics, Dental School, USP - Universidade de São Paulo, SP, São Paulo, Brazil
| | - Eliseo P Chun
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, UNESP - Univ Estadual de São Paulo, São José dos Campos, SP, Brazil
| | - Dalva Cruz Laganá
- Department of Prosthodontics, Dental School, USP - Universidade de São Paulo, SP, São Paulo, Brazil
| |
Collapse
|
20
|
Minatel L, Verri FR, Kudo GAH, de Faria Almeida DA, de Souza Batista VE, Lemos CAA, Pellizzer EP, Santiago JF. Effect of different types of prosthetic platforms on stress-distribution in dental implant-supported prostheses. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:35-42. [DOI: 10.1016/j.msec.2016.09.062] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 09/17/2016] [Accepted: 09/27/2016] [Indexed: 10/20/2022]
|
21
|
Al Amri MD, Al-Johany SS, Al Baker AM, Al Rifaiy MQ, Abduljabbar TS, Al-Kheraif AA. Soft tissue changes and crestal bone loss around platform-switched implants placed at crestal and subcrestal levels: 36-month results from a prospective split-mouth clinical trial. Clin Oral Implants Res 2016; 28:1342-1347. [DOI: 10.1111/clr.12990] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Mohammad D. Al Amri
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Sulieman S. Al-Johany
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Abdulaziz M. Al Baker
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Mohammad Q. Al Rifaiy
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Tariq S. Abduljabbar
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Abdulaziz A. Al-Kheraif
- Dental Health Department; College of Applied Medical Sciences; King Saud University; Riyadh Saudi Arabia
| |
Collapse
|
22
|
Platform-switching implants and bone preservation: a systematic review and meta-analysis. Int J Oral Maxillofac Surg 2016; 45:332-45. [DOI: 10.1016/j.ijom.2015.11.009] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 11/03/2015] [Accepted: 11/17/2015] [Indexed: 11/24/2022]
|
23
|
Al Amri MD, Abduljabbar TS. Comparison of clinical and radiographic status of platform-switched implants placed in patients with and without type 2 diabetes mellitus: a 24-month follow-up longitudinal study. Clin Oral Implants Res 2016; 28:226-230. [PMID: 26822289 DOI: 10.1111/clr.12787] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2015] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The purpose of the present 24-month follow-up longitudinal study was to compare the clinical and radiographic status of platform-switched implants placed in patients with and without type 2 diabetes mellitus (T2DM). MATERIAL AND METHODS In total, 45 male non-smokers were included. In Group-1, there were 23 patients with T2DM, and patients in Group-2 comprised of 22 self-reported non-diabetic controls. Under local anesthesia, platform-switched implants were placed in the mandible. Peri-implant bleeding on probing (BOP), probing depth (PD), marginal bone loss (MBL) and hemoglobin A1c (HbA1c) levels were measured at 12 and 24 months of follow-up. Participants were also enrolled in a biannual oral hygiene maintenance program. RESULTS The mean age of participants in groups 1 and 2 were 42.4 years (40-46 years) and 41.8 years (39-44 years), respectively. In Group-1, the mean duration of T2DM was 14.5 ± 0.7 months. At 12 and 24 months of follow-up, there was no significant difference in the mean HbA1c levels among patients in groups 1 and 2. At 12 and 24 months of follow-up, there was no significant difference in peri-implant BOP, PD and MBL in both groups. CONCLUSIONS Platform-switched implants can remain clinically and radiographically stable in patients with T2DM in a manner similar to non-diabetic individuals. However, it is emphasized that bone loss around implants is influenced by several factors (such as oral hygiene status, glycemic control and tobacco smoking) and not merely platform switching.
Collapse
Affiliation(s)
- Mohammad D Al Amri
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Tariq S Abduljabbar
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| |
Collapse
|
24
|
van Eekeren P, van Elsas P, Tahmaseb A, Wismeijer D. The influence of initial mucosal thickness on crestal bone change in similar macrogeometrical implants: a prospective randomized clinical trial. Clin Oral Implants Res 2016; 28:214-218. [DOI: 10.1111/clr.12784] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2015] [Indexed: 01/31/2023]
Affiliation(s)
- Paul van Eekeren
- Department of Oral Implantology and Prosthetic Dentistry of the Academic Centre for Dentistry Amsterdam (ACTA); Amsterdam The Netherlands
| | - Pieter van Elsas
- Department of Oral Implantology and Prosthetic Dentistry of the Academic Centre for Dentistry Amsterdam (ACTA); Amsterdam The Netherlands
| | - Ali Tahmaseb
- Department of Oral Implantology and Prosthetic Dentistry of the Academic Centre for Dentistry Amsterdam (ACTA); Amsterdam The Netherlands
| | - Daniel Wismeijer
- Department of Oral Implantology and Prosthetic Dentistry of the Academic Centre for Dentistry Amsterdam (ACTA); Amsterdam The Netherlands
| |
Collapse
|
25
|
Mosavar A, Nili M, Hashemi SR, Kadkhodaei M. A Comparative Analysis on Two Types of Oral Implants, Bone-Level and Tissue-Level, with Different Cantilever Lengths of Fixed Prosthesis. J Prosthodont 2015; 26:289-295. [PMID: 26662575 DOI: 10.1111/jopr.12388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2015] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Depending on esthetic, anatomical, and functional aspects, in implant-prosthetic restoration of a completely edentulous jaw, the selection of implant type is highly important; however, bone- and tissue-level implants and their stress distribution in bone have not yet been comparatively investigated. Hence, finite element analysis was used to study the influence of cantilever length in a fixed prosthesis on stress distribution in peri-implant bone around these two types of oral implants. MATERIALS AND METHODS A 3D edentulous mandible was modeled. In simulations, a framework with four posterior cantilever lengths and two types of implants, bone-level and tissue-level, was considered. A compressive load was applied to the distal regions of the cantilevers, and the von-Mises stress of peri-implant bone was investigated. The independent t-test and the Pearson correlation coefficient analyzed the results (α = 0.05). RESULTS Stresses in the cortical bone around the bone-level implants were greater than those in the tissue-level implants with the same cantilever length. In addition, by extending the cantilever length, the stress values in peri-implant bone increased. Therefore, when the cantilever was at its maximum length, the maximum stress was in cortical bone and around the bone-level distal implants. CONCLUSION The results of the present study indicate that treatment with tissue-level implants is potentially more advantageous than with bone-level implants for implant-supported fixed prostheses.
Collapse
Affiliation(s)
- Alireza Mosavar
- Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran
| | - Monireh Nili
- Department of Prosthodontics, Faculty of Dentistry, Islamic Azad University Isfahan (Khorasgan) Branch, Isfahan, Iran
| | - Sayed Raouf Hashemi
- Department of Prosthodontics, Faculty of Dentistry, Islamic Azad University Isfahan (Khorasgan) Branch, Isfahan, Iran
| | - Mahmoud Kadkhodaei
- Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran
| |
Collapse
|
26
|
Platform switch and dental implants: A meta-analysis. J Dent 2015; 43:629-46. [PMID: 25559693 DOI: 10.1016/j.jdent.2014.12.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 12/13/2014] [Accepted: 12/22/2014] [Indexed: 12/29/2022] Open
|
27
|
van Eekeren P, Tahmaseb A, Wismeijer D. Crestal bone changes in macrogeometrically similar implants with the implant-abutment connection at the crestal bone level or 2.5 mm above: a prospective randomized clinical trial. Clin Oral Implants Res 2015; 27:1479-1484. [DOI: 10.1111/clr.12581] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2015] [Indexed: 01/13/2023]
Affiliation(s)
- Paul van Eekeren
- Section of Oral Implantology and Fixed Prosthetics; Department of Oral Function; Academic Centre of Dentistry Amsterdam; Amsterdam The Netherlands
| | - Ali Tahmaseb
- Section of Oral Implantology and Fixed Prosthetics; Department of Oral Function; Academic Centre of Dentistry Amsterdam; Amsterdam The Netherlands
| | - Daniël Wismeijer
- Section of Oral Implantology and Fixed Prosthetics; Department of Oral Function; Academic Centre of Dentistry Amsterdam; Amsterdam The Netherlands
| |
Collapse
|
28
|
Strietzel FP, Neumann K, Hertel M. Impact of platform switching on marginal peri-implant bone-level changes. A systematic review and meta-analysis. Clin Oral Implants Res 2015; 26:342-58. [PMID: 24438506 PMCID: PMC4340042 DOI: 10.1111/clr.12339] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2013] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To address the focused question, is there an impact of platform switching (PS) on marginal bone level (MBL) changes around endosseous implants compared to implants with platform matching (PM) implant-abutment configurations? MATERIAL AND METHODS A systematic literature search was conducted using electronic databases PubMed, Web of Science, Journals@Ovid Full Text and Embase, manual search for human randomized clinical trials (RCTs) and prospective clinical controlled cohort studies (PCCS) reporting on MBL changes at implants with PS-, compared with PM-implant-abutment connections, published between 2005 and June 2013. RESULTS Twenty-two publications were eligible for the systematic review. The qualitative analysis of 15 RCTs and seven PCCS revealed more studies (13 RCTs and three PCCS) showing a significantly less mean marginal bone loss around implants with PS- compared to PM-implant-abutment connections, indicating a clear tendency favoring the PS technique. A meta-analysis including 13 RCTs revealed a significantly less mean MBL change (0.49 mm [CI95% 0.38; 0.60]) at PS implants, compared with PM implants (1.01 mm [CI95% 0.62; 1.40] (P < 0.0001). CONCLUSIONS The meta-analysis revealed a significantly less mean MBL change at implants with a PS compared to PM-implant-abutment configuration. Studies included herein showed an unclear as well as high risk of bias mostly, and relatively short follow-up periods. The qualitative analysis revealed a tendency favoring the PS technique to prevent or minimize peri-implant marginal bone loss compared with PM technique. Due to heterogeneity of the included studies, their results require cautious interpretation.
Collapse
Affiliation(s)
- Frank Peter Strietzel
- Department of Oral Medicine, Dental Radiology and Oral Surgery, Charité – Medical University of Berlin/Charité Centre 3 for Dental, Oral and Maxillary MedicineBerlin, Germany
| | - Konrad Neumann
- Charité – Medical University of Berlin/Charité Centre 4 for Therapeutic Research, Institute of Medical Biometrics and Clinical EpidemiologyBerlin, Germany
| | - Moritz Hertel
- Department of Oral Medicine, Dental Radiology and Oral Surgery, Charité – Medical University of Berlin/Charité Centre 3 for Dental, Oral and Maxillary MedicineBerlin, Germany
| |
Collapse
|
29
|
Guerra F, Wagner W, Wiltfang J, Rocha S, Moergel M, Behrens E, Nicolau P. Platform switch versus platform match in the posterior mandible – 1-year results of a multicentre randomized clinical trial. J Clin Periodontol 2015; 41:521-9. [PMID: 24829969 PMCID: PMC4282357 DOI: 10.1111/jcpe.12244] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Objective The purpose of this ongoing randomized study was to assess differences in bone level changes and success rates using implants supporting single crowns in the posterior mandible either with platform matched or platform switched abutments. Material and Methods Patients aged 18 and above, missing at least two teeth in the posterior mandible and with a natural tooth mesial to the most proximal implant site were enrolled. Randomization followed implant placement. Definitive restorations were placed after a minimum transgingival healing period of 8 weeks. Changes in crestal bone level from surgery and loading (baseline) to 12-month post-loading were radiographically measured. Implant survival and success were determined. Results Sixty-eight patients received 74 implants in the platform switching group and 72 in the other one. The difference of mean marginal bone level change from surgery to 12 months was significant between groups (p < 0.004). Radiographical mean bone gain or no bone loss from loading was noted for 67.1% of the platform switching and 49.2% of the platform matching implants. Implant success rates were 97.3% and 100%, respectively. Conclusions Within the same implant system the platform switching concept showed a positive effect on marginal bone levels when compared with restorations with platform matching.
Collapse
Affiliation(s)
- Fernando Guerra
- Faculty of Medicine, University of CoimbraCoimbra, Portugal
- Address: Fernando Guerra, Área de Medicina Dentária da Faculdade de Medicina da Universidade de Coimbra, Avenida Bissaia Barreto, Blocos de Celas – HUC, 3030 075 Coimbra, Portugal, E-mail:
| | - Wilfried Wagner
- Medical Center of Johannes Gutenberg University of MainzMainz, Germany
| | - Jörg Wiltfang
- Schleswig-Holstein University Hospital, University of KielKiel, Germany
| | - Salomão Rocha
- Faculty of Medicine, University of CoimbraCoimbra, Portugal
| | | | - Eleonore Behrens
- Schleswig-Holstein University Hospital, University of KielKiel, Germany
| | - Pedro Nicolau
- Faculty of Medicine, University of CoimbraCoimbra, Portugal
| |
Collapse
|
30
|
Kütan E, Bolukbasi N, Yildirim-Ondur E, Ozdemir T. Clinical and Radiographic Evaluation of Marginal Bone Changes around Platform-Switching Implants Placed in Crestal or Subcrestal Positions: A Randomized Controlled Clinical Trial. Clin Implant Dent Relat Res 2014; 17 Suppl 2:e364-75. [PMID: 25041252 DOI: 10.1111/cid.12248] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND It has been reported in many articles that marginal bone resorptions are prevented by platform-switching design. However, what occurs when these implants are placed in the apical position is not completely known. PURPOSE This report describes a randomized controlled clinical trial study that aims to test the hypothesis that less resorption will occur when platform-switching implants are placed 1 mm below bone level. MATERIALS AND METHODS A total of 56 randomly selected implants were inserted bilaterally, either 1 mm below bone level (test group, 28 implants) or at bone level (control group, 28 implants) of the patients' posterior regions. Marginal bone resorptions were examined through periapical radiographies taken with the parallel technique at the time of crown cementation and the third, sixth, 12th, and 36th months after prosthetic loading. The modified plaque index, gingival index, bleeding on probing, and probing depths were used for follow-up periodontal care of the implants. RESULTS After 3 years, the mean radiographic vertical bone loss in the control group was significantly lower than in the test group (0.56 ± 0.35 mm and 1.21 ± 1.05 mm, respectively) (p < .01). In terms of periodontal indexes, there were no statistically significant differences between the two groups (p > .05). No peri-implantitis or peri-implant mucositis was observed around the test or control implants. CONCLUSIONS More marginal bone resorptions occurred after the third year of loading in implants placed 1 mm below bone level. However, the resorptions did not reach the implants thread. In the control group, the first bone implant contact was placed under the level of the first threads. Therefore, the present randomized clinical trial confirmed the hypothesis that placing platform-switching implants 1 mm below bone level reduced marginal bone loss. It can be noted that to reduce resorption, platform-switching implants should be placed below bone level.
Collapse
Affiliation(s)
- Esma Kütan
- Department of Oral Implantology, Faculty of Dentistry, Yeditepe University, Istanbul Turkey
| | - Nilufer Bolukbasi
- Department of Oral Implantology, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Esra Yildirim-Ondur
- Department of Oral Implantology, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Tayfun Ozdemir
- Department of Oral Implantology, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| |
Collapse
|
31
|
Romanos GE, Javed F. Platform switching minimises crestal bone loss around dental implants: truth or myth? J Oral Rehabil 2014; 41:700-8. [DOI: 10.1111/joor.12189] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2014] [Indexed: 11/29/2022]
Affiliation(s)
- G. E. Romanos
- School of Dental Medicine; Stony Brook University; Stony Brook NY USA
| | - F. Javed
- Engineer Abdullah Bugshan Research Chair for Growth Factors and Bone Regeneration; 3D Imaging and Biomechanical Laboratory; College of Applied Medical Sciences; King Saud University; Riyadh Saudi Arabia
| |
Collapse
|
32
|
Korsch M, Robra BP, Walther W. Predictors of Excess Cement and Tissue Response to Fixed Implant-Supported Dentures after Cementation. Clin Implant Dent Relat Res 2013; 17 Suppl 1:e45-53. [DOI: 10.1111/cid.12122] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael Korsch
- Dental Academy for Continuing Professional Development; Karlsruhe Germany
| | - Bernt-Peter Robra
- Institute of Social Medicine and Health Economics; Otto-von-Guericke-University of Magdeburg; Magdeburg Germany
| | - Winfried Walther
- Dental Academy for Continuing Professional Development; Karlsruhe Germany
| |
Collapse
|
33
|
Türk AG, Ulusoy M, Toksavul S, Güneri P, Koca H. Marginal bone loss of two implant systems with three different superstructure materials: a randomised clinical trial. J Oral Rehabil 2013; 40:457-63. [DOI: 10.1111/joor.12054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2013] [Indexed: 01/30/2023]
Affiliation(s)
- A. G. Türk
- Department of Prosthodontics; Faculty of Dentistry; University of Ege; İzmir Turkey
| | - M. Ulusoy
- Department of Prosthodontics; Faculty of Dentistry; University of Ege; İzmir Turkey
| | - S. Toksavul
- Department of Prosthodontics; Faculty of Dentistry; University of Ege; İzmir Turkey
| | - P. Güneri
- Department of Oral and Maxillofacial Radiology; Faculty of Dentistry; University of Ege; İzmir Turkey
| | - H. Koca
- Department of Oral and Maxillofacial Radiology; Faculty of Dentistry; University of Ege; İzmir Turkey
| |
Collapse
|
34
|
Dursun E, Tulunoglu I, Ozbek SM, Uysal S, Akalın FA, Kilinc K, Karabulut E, Tözüm TF. The Influence of Platform Switching on Clinical, Laboratory, and Image-Based Measures: A Prospective Clinical Study. Clin Implant Dent Relat Res 2013; 16:936-46. [DOI: 10.1111/cid.12054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Erhan Dursun
- Department of Periodontology; Faculty of Dentistry; Hacettepe University; Ankara Turkey
| | - Ibrahim Tulunoglu
- Department of Prosthodontics; Faculty of Dentistry; Hacettepe University; Ankara Turkey
| | - S. Murat Ozbek
- Department of Dento-Maxillofacial Radiology; Faculty of Dentistry; Hacettepe University; Ankara Turkey
| | - Serdar Uysal
- Department of Dento-Maxillofacial Radiology; Faculty of Dentistry; Hacettepe University; Ankara Turkey
| | - F. Alev Akalın
- Department of Periodontology; Faculty of Dentistry; Hacettepe University; Ankara Turkey
| | - Kamer Kilinc
- Department of Biochemistry; Faculty of Medicine; Hacettepe University; Ankara Turkey
| | - Erdem Karabulut
- Department of Biostatistics; Faculty of Medicine; Hacettepe University; Ankara Turkey
| | - Tolga F. Tözüm
- Department of Periodontology; Faculty of Dentistry; Hacettepe University; Ankara Turkey
| |
Collapse
|