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Soldatos N, Heydari A, Horton L, Sarrami S, Nordlie L, Choi D, Weltman R. Temperature Changes (Δ T) in Correlation with Number of Implant Osteotomy Preparations in Human Cadaver Tibiae, Comparing Osseodensification (OD) Burs in Clockwise (CW) versus Counterclockwise (CCW) Mode. J Funct Biomater 2024; 15:237. [PMID: 39194676 DOI: 10.3390/jfb15080237] [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: 07/16/2024] [Revised: 08/19/2024] [Accepted: 08/20/2024] [Indexed: 08/29/2024] Open
Abstract
(1) Background: OD burs are used in two different modes: (i) CW and (ii) CCW. The purpose of the study was to evaluate the ΔT during the preparation of implant osteotomies in a four-way interaction. (2) Methods: Three hundred and sixty osteotomies were prepared at 12 mm depth in human cadaver tibiae. The ΔT values were calculated similarly to the method used in two previous studies carried out by our group. Four different variables were evaluated for their effect on ΔT. (3) Results: A four-way interaction was observed in the CCW mode, allowing for 1000 RPM to have the least effect in both modes. However, in the CCW mode the use of 3.0 and 4.0 burs after 23 osteotomies showed a statistically significant increase in ΔT, and significant chatter, compared to the CW mode. In the CCW mode, the ΔT was increased significantly as the diameter of the burs increased in 800 and 1200 RPM. (4) Conclusions: The synergistic effect of drills' diameter, CCW mode, 800 and 1200 RPM, and bur usage (over 23 times) had a significant effect on ΔT, which exceeded 47 °C. One thousand (1000) RPM had the least effect in both modes. The 3.0 and 4.0 burs in the CCW mode drastically increased the temperature and produced significant chatter.
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Affiliation(s)
- Nikolaos Soldatos
- Department of Regenerative and Reconstructive Sciences, School of Dentistry, Oregon Health Science University (OHSU), 2730 SW Moody Ave., Portland, OR 97201, USA
| | - Amanda Heydari
- Department of Regenerative and Reconstructive Sciences, School of Dentistry, Oregon Health Science University (OHSU), 2730 SW Moody Ave., Portland, OR 97201, USA
| | - LeRoy Horton
- Department of Regenerative and Reconstructive Sciences, School of Dentistry, Oregon Health Science University (OHSU), 2730 SW Moody Ave., Portland, OR 97201, USA
| | - Shayda Sarrami
- Department of Regenerative and Reconstructive Sciences, School of Dentistry, Oregon Health Science University (OHSU), 2730 SW Moody Ave., Portland, OR 97201, USA
| | - Luke Nordlie
- Department of Oral Rehabilitation and Biosciences, School of Dentistry, Oregon Health Science University (OHSU), 2730 SW Moody Ave., Portland, OR 97201, USA
| | - Dongseok Choi
- OHSU-PSU School of Public Health, Oregon Health & Science University, 1810 SW 5th Ave, Portland, OR 97201, USA
| | - Robin Weltman
- Department of Clinical Sciences, School of Dental Medicine, University of Nevada Las Vegas (UNLV), 1001 Shadow Ln., Las Vegas, NV 89106, USA
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Yoon Y, Kang I, Noh G, Kwon YD. Biomechanical analysis of alveolar bones with compromised quality supporting a 4-unit implant bridge; a possible association with implant-related sequestration (IRS). Clin Oral Investig 2024; 28:197. [PMID: 38448748 DOI: 10.1007/s00784-024-05589-3] [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: 12/21/2023] [Accepted: 02/25/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVES This study aimed to investigate the strain in the bone surrounding dental implants supporting a 4-unit bridge and assess the role of excessive strain as a possible risk factor for implant related sequestration (IRS) or peri-implant medication-related osteonecrosis of the jaw (PI-MRONJ). MATERIALS AND METHODS A 3D-mandibular model was constructed using computed tomography and segmented it into cortical and cancellous bones. The 4-unit implant-supported bridges replacing the mandibular posteriors were constructed, and each featuring two, three, and four implants, respectively. The Young's modulus was assigned based on the quality of the bone. A maximum occlusal force of 200 N was applied to each implant in the axial and in a 30-degree oblique direction. RESULTS The maximum principal strain of the fatigue failure range (> 3000 µε) in the bone was analyzed. The volume fraction of fatigue failure was higher in poor-quality bone compared to normal bone and oblique load than in axial load. An increasing number of implants may dissipate excessive strain in poor-quality bones. CONCLUSIONS Occlusal force applied to poor-quality bone can result in microdamage. Given that unrepaired microdamage may initiate medication-related osteonecrosis of the jaw, long-term occlusal force on fragile bones might be a risk factor. CLINICAL RELEVANCE When planning implant treatment for patients with compromised bone status, clinical modifications such as strategic placement of implants and optimization of restoration morphology should be considered to reduce excessive strain which might be associated with IRS or PI-MRONJ.
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Affiliation(s)
- Youngjae Yoon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Inyeong Kang
- School of Mechanical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Gunwoo Noh
- School of Mechanical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Yong-Dae Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
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Trasarti S, Toti P, Covani U, Crespi R, Menchini-Fabris GB. Specific use of the implant stability quotient as a guide to improve healing for patients who had undergone rehabilitation with fixed implant-supported dental prostheses. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2023; 124:101528. [PMID: 37301374 DOI: 10.1016/j.jormas.2023.101528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/12/2023]
Abstract
PURPOSES to develop a clinical approach to evaluating osteointegration around bone implants and try to determining which was the correct time of implant loading in different edentulous indications, that is, either properly positioned implants or implants "at risk", generally referred to as implants having increased probability of failure (namely those for which primary stability had been achieved via a time-consuming surgery). MATERIALS Several implant-supported rehabilitation strategies, with or without bone augmentation procedures, were performed in the upper and lower arches: From 2 to 5 months following implant placement, the prosthetic restorations were performed. A resonance frequency analyzer allowed clinicians to measure intraoperative and postoperative implant stability, then the values of the implant stability quotient, ISQ, ranging from 0 to 100, were registered. ISQs were ranked into 3 levels: Green (ISQ ≥ 70), Yellow (60 ≤ ISQ < 70), and Red (ISQ < 60). Groups were subjected to Pearson's χ2 analysis, with YATES correction when necessary, with a significance level of 0.05. RESULTS A total of 213 implants had been included. When the distribution of normalized values of ISQ registered for implants inserted in native bone and loaded at 2-3 months (5 Red, 19 Yellow, and 51 Green) was compared to that of native implants loaded after 4-5 months (4 Red, 20 Yellow, and 11 Green), a significative difference was found (p-value = 0.0037). At the time of loading, significance was lost. Significant clinical improvements on the distribution of normalized values of ISQ were apparent for both the implants placed in pristine and those placed in lifted sinuses; no significant differences were registered between the two groups. CONCLUSION At the loading time, implants considered to be at risk behaved similarly to the native sites for which the overall prosthetic workflow took about few; results confirmed that the mandibular implants appeared to have higher stabilities when compared to maxillary implants at both the intraoperative and the postoperative surveys.
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Affiliation(s)
- Stefano Trasarti
- Tuscan Dental Institute, Versilia Hospital, Lido di Camaiore, Italy
| | - Paolo Toti
- Tuscan Dental Institute, Versilia Hospital, Lido di Camaiore, Italy; School of Dentistry, Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - Ugo Covani
- Tuscan Dental Institute, Versilia Hospital, Lido di Camaiore, Italy; School of Dentistry, Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - Roberto Crespi
- Tuscan Dental Institute, Versilia Hospital, Lido di Camaiore, Italy; School of Dentistry, Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - Giovanni-Battista Menchini-Fabris
- Tuscan Dental Institute, Versilia Hospital, Lido di Camaiore, Italy; San Rossore Dental Unit, San Rossore Private Hospital, Pisa, Italy; Saint Camillus International University of Health and Medical Sciences, Rome, Italy.
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Qi M, Deng S, Tan Z. Clinical study to assess influence of immediate provisionalization and various implant morphologies on implant stability: A prospective clinical study. Front Surg 2023; 9:1095741. [PMID: 36684336 PMCID: PMC9852988 DOI: 10.3389/fsurg.2022.1095741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 11/21/2022] [Indexed: 01/07/2023] Open
Abstract
Introduction The aim of this study was to evaluate the influence of different implant morphologies and immediate provisionalization options on the change of implant stability. Methods 94 Patients were randomized to receive implants from Straumann® BL/Straumann® BLT/Astra OsseoSpeed® TX, meanwhile having the same opportunity to receive healing abutment or immediate provisionalization. Implant stability quotient (ISQ) and marginal bone loss (MBL) were recorded at following timepoints. Parametric statistic was used for data analysis. Results Data showed that ISQ and MBL values of conical/straight/straight with micro-thread neck implants had no significant difference. Discussion Immediate provisionalization options could move the dip point of ISQ values ahead or delayed around one week, which were also relevant to implant systems. MBL values were proved to be unaffected by both two factors mentioned above.
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Affiliation(s)
- Meiyao Qi
- State Key Laboratory of Oral Diseases, National Clinical Research Center of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shiyong Deng
- State Key Laboratory of Oral Diseases, National Clinical Research Center of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhen Tan
- State Key Laboratory of Oral Diseases, National Clinical Research Center of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Correspondence: Zhen Tan
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Dharmarajan L, Prakash PSG, Appukuttan D, Crena J, Subramanian S, Alzahrani KJ, Alsharif KF, Halawani IF, Alnfiai MM, Alamoudi A, Kamil MA, Balaji TM, Patil S. The Effect of Laser Micro Grooved Platform Switched Implants and Abutments on Early Crestal Bone Levels and Peri-Implant Soft Tissues Post 1 Year Loading among Diabetic Patients-A Controlled Clinical Trial. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58101456. [PMID: 36295619 PMCID: PMC9609409 DOI: 10.3390/medicina58101456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 09/24/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022]
Abstract
Background and Objectives: The study aimed to compare the mean crestal bone level (CBL) and peri-implant soft tissue parameters in laser micro-grooved (LMG) platform switched implants and abutments (I&A) post 1 year of functional loading among non-diabetic and type II diabetic individuals. Materials and methods: Patients with an edentulous site having minimum bone height and width of ≥13 mm and ≥6 mm, respectively, were divided into two groups: (i) Non-diabetic-8 (control) and (ii) diabetic-8 (test). LMG Implants were placed and loaded immediately with a provisional prosthesis. Mean crestal bone level (MCBL) was evaluated radiographically at baseline and at 1 year. Peri-implant attachment level (PIAL) and relative position of the gingival margin (R-PGM) were recorded. Implant stability quotient (ISQ) level and implant survival rate (ISR) were evaluated at 1 year. Results: Early MCBL within the groups 1 year postloading was similar both mesially and distally (control-0.00 to 0.16 mm and 0.00 to 0.17 mm, respectively; test-0.00 to 0.21 mm and 0.00 to 0.22 mm, respectively) with statistical significance (p ≤ 0.003, p ≤ 0.001 and p ≤ 0.001, p ≤ 0.001, respectively). However, intergroup comparison showed no significant difference statistically in the MCBL in 1 year post functional loading. The peri-implant soft tissue parameters showed no significant difference between the groups. ISQ level between both groups did not reveal any significant changes (p ≤ 0.92), and ISR was 100%. Conclusions: LMG Implants resulted in minimal and comparable early crestal bone loss and soft tissue changes post 1 year of functional loading in moderately controlled diabetic and non-diabetic individuals, suggesting that this could be a reliable system for use in systemically compromised individuals.
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Affiliation(s)
- Lalli Dharmarajan
- Department of Periodontics, SRM Dental College and Hospital, Ramapuram, Chennai 600089, India
| | - P. S. G. Prakash
- Department of Periodontics, SRM Dental College and Hospital, Ramapuram, Chennai 600089, India
- Correspondence: (P.S.G.P.); (S.P.)
| | - Devapriya Appukuttan
- Department of Periodontics, SRM Dental College and Hospital, Ramapuram, Chennai 600089, India
| | - Jasmine Crena
- Department of Periodontics, SRM Dental College and Hospital, Ramapuram, Chennai 600089, India
| | - Sangeetha Subramanian
- Department of Periodontics, SRM Dental College and Hospital, Ramapuram, Chennai 600089, India
| | - Khalid J. Alzahrani
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Khalaf F. Alsharif
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ibrahim F. Halawani
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mrim M. Alnfiai
- Department of Information Technology, College of Computers and Information Technology, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ahmed Alamoudi
- Oral Biology Department, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mona Awad Kamil
- Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Jazan 45412, Saudi Arabia
| | | | - Shankargouda Patil
- College of Dental Medicine, Roseman University of Health Science, South Jordan, UT 84095, USA
- Correspondence: (P.S.G.P.); (S.P.)
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6
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Öztürk K, Kış HC. Peri-implant bone microstructural analysis and comparison of resonance frequency analysis before prosthetic placement: a retrospective study. Clin Oral Investig 2022; 26:4967-4975. [PMID: 35314891 PMCID: PMC8938162 DOI: 10.1007/s00784-022-04464-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 03/12/2022] [Indexed: 11/30/2022]
Abstract
Objectives Fractal analysis is a mathematical method used for the calculation of bone trabeculation and lacunarity. This study aims to evaluate the relationship between resonance frequency analysis (RFA) and fractal dimension (FD) of peri-implant bone to determine the preload stability of implants. Materials and methods In this study, the results of the fractal analysis calculated from the resonance frequency analysis results taken in the 3rd month of the patients who underwent 2-stage implant by the same doctor and the radiographs taken in the same session were evaluated. A hundred implants in 20 patients were applied in this study. The implant stability quotient (ISQ) values of the implants and fractal dimension values of the peri-implant bone were calculated. Results The findings showed that the ISQ1 (p = 0.008), ISQ2 (p = 0.038), ROI2 (p = 0.013), and ROI3 (p < 0.001) values were statistically significantly higher in men than women. The ISQ1 (p = 0.003), ISQ2 (p = 0.013), ROI1 (p = 0.011), and ROI3 (p < 0.001) of the mandible were statistically higher than the maxilla. The fractal dimension cut-off value to assess prosthetic loading was found 1.198. Conclusion Fractal analysis is a non-invasive method that can be used in conjunction with clinical examination in the prosthetic loading decision of implants. It is a valuable parameter that can be used without the need for an extra device when it is necessary to reduce the clinical study time. Clinical relevance Calculating the fractal dimension of the peri-implant bone is a practical, economical, and applicable method for clinicians. FD calculated from panoramic radiographs used for diagnosis in routine treatments in clinics where access to the necessary devices for ISQ measurement is not available will contribute to clinical practice. Supplementary Information The online version contains supplementary material available at 10.1007/s00784-022-04464-3.
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Affiliation(s)
- Kübra Öztürk
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Nuh Naci Yazgan University, Kayseri, Turkey.
| | - Hatice Cansu Kış
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Nuh Naci Yazgan University, Kayseri, Turkey
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Comparison of Implant Stability between Regenerated and Non-Regenerated Bone. A Prospective Cohort Study. J Clin Med 2021; 10:jcm10153220. [PMID: 34362004 PMCID: PMC8347999 DOI: 10.3390/jcm10153220] [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: 06/14/2021] [Revised: 07/16/2021] [Accepted: 07/19/2021] [Indexed: 02/07/2023] Open
Abstract
Implant stability is one of the main indicators of successful osseointegration. Although it has been measured in numerous studies, there has been little research on implant stability in regenerated bone. The study compares primary and secondary stability between implants placed in regenerated versus native bone and evaluates the influence of bone quality on the results. Sixty implants were placed in 31 patients: 30 implants inserted in native bone (non-regenerated) after a healing period of at least 6 months post-exodontia and 30 inserted in regenerated bone at 6 months after grafting with xenograft. Resonance frequency analysis (RFA) was used to obtain implant stability quotient (ISQ) values at baseline (implant placement), 8 weeks, and 12 weeks. Statistically significant differences were found between implants placed in regenerated bone and those placed in native bone at all measurement time points (p < 0.05). ISQ values were significantly influenced by bone quality at baseline (p < 0.05) but not at 8 or 12 weeks. Greater stability was obtained in implants placed in native bone; however, those placed in regenerated bone showed adequate primary and secondary stability for prosthetic loading. Bone quality influences the primary but not secondary stability of the implants in both native and regenerated bone.
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Inchingolo AD, Inchingolo AM, Bordea IR, Xhajanka E, Romeo DM, Romeo M, Zappone CMF, Malcangi G, Scarano A, Lorusso F, Isacco CG, Marinelli G, Contaldo M, Ballini A, Inchingolo F, Dipalma G. The Effectiveness of Osseodensification Drilling Protocol for Implant Site Osteotomy: A Systematic Review of the Literature and Meta-Analysis. MATERIALS 2021; 14:ma14051147. [PMID: 33671038 PMCID: PMC7957527 DOI: 10.3390/ma14051147] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 12/11/2022]
Abstract
Many different osteotomy procedures has been proposed in the literature for dental implant site preparation. The osseodensification is a drilling technique that has been proposed to improve the local bone quality and implant stability in poor density alveolar ridges. This technique determines an expansion of the implant site by increasing the density of the adjacent bone. The aim of the present investigation was to evaluate the effectiveness of the osseodensification technique for implant site preparation through a literature review and meta-analysis. The database electronic research was performed on PubMed (Medline) database for the screening of the scientific papers. A total of 16 articles have been identified suitable for the review and qualitative analysis—11 clinical studies (eight on animals, three on human subjects), four literature reviews, and one case report. The meta-analysis was performed to compare the bone-to-implant contact % (BIC), bone area fraction occupied % (BAFO), and insertion torque of clockwise and counter-clockwise osseodensification procedure in animal studies. The included articles reported a significant increase in the insertion torque of the implants positioned through the osseodensification protocol compared to the conventional drilling technique. Advantages of this new technique are important above all when the patient has a strong missing and/or low quantity of bone tissue. The data collected until the drafting of this paper detect an improvement when the osseodensification has been adopted if compared to the conventional technique. A significant difference in BIC and insertion torque between the clockwise and counter-clockwise osseodensification procedure was reported, with no difference in BAFO measurements between the two approaches. The effectiveness of the present study demonstrated that the osseodensification drilling protocol is a useful technique to obtain increased implant insertion torque and bone to implant contact (BIC) in vivo. Further randomized clinical studies are required to confirm these pieces of evidence in human studies.
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Affiliation(s)
- Alessio Danilo Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Angelo Michele Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Ioana Roxana Bordea
- Department of Oral Rehabilitation, Faculty of Dentistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
- Correspondence: (I.R.B.); (F.L.); Tel.:+4-07-4491-9319 (I.R.B.); +39-087-1455-4100 (F.L.)
| | - Edit Xhajanka
- Department of Dental Prosthesis, University of Tirana, Nr 183 Tirana, Albania;
| | - Donato Mario Romeo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
- Freelancer Studio Dentistico Drs. Romeo, 75025 Policoro, Italy
| | - Mario Romeo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
- Freelancer Studio Dentistico Drs. Romeo, 75025 Policoro, Italy
| | - Carlo Maria Felice Zappone
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
- Freelancer Studio Dentistico Drs. Romeo, 75025 Policoro, Italy
| | - Giuseppina Malcangi
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Antonio Scarano
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Felice Lorusso
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, 66100 Chieti, Italy;
- Correspondence: (I.R.B.); (F.L.); Tel.:+4-07-4491-9319 (I.R.B.); +39-087-1455-4100 (F.L.)
| | - Ciro Gargiulo Isacco
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
- Human Stem Cells Research Center HSC of Ho Chi Minh, Ho Chi Minh 70000, Vietnam
- Embryology and Regenerative Medicine and Immunology, Pham Chau Trinh University of Medicine Hoi An, Hoi An 70000, Vietnam
| | - Grazia Marinelli
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Maria Contaldo
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Via Luigi de Crecchio, 6, 80138 Naples, Italy;
| | - Andrea Ballini
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Campus Universitario “Ernesto Quagliariello” University of Bari “Aldo Moro”, 70125 Bari, Italy;
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
| | - Gianna Dipalma
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (A.D.I.); (A.M.I.); (D.M.R.); (M.R.); (C.M.F.Z.); (G.M.); (C.G.I.); (G.M.); (F.I.); (G.D.)
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Abstract
In the past, the only way to replace missing teeth was to have a removable appliance. However, these days, dental implants are commonly being used to replace missing teeth. The dental implants are improving as a result of new technological and scientific advances. Different materials have been used in the past for dental implants such as lead, stainless steel, and gold. Currently, the focus is on using Roxolid, surface-modified titanium implants, and zirconia. These materials have superior esthetic and functional characteristics for dental implants.
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Affiliation(s)
- Allen Glied
- Department of Dentistry, St. Barnabas Hospital, 4422 Third Avenue, Bronx, NY 10457, USA.
| | - Junaid Mundiya
- Department of Oral and Maxillofacial Surgery, The Brooklyn Hospital Center, 121 Dekalb Avenue, Brooklyn, NY 11201, USA
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10
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Factors Influencing Primary and Secondary Implant Stability—A Retrospective Cohort Study with 582 Implants in 272 Patients. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10228084] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The success rate of dental implants depends on primary and secondary stability. We investigate predictive factors for future risk stratification models. We retrospectively analyze 272 patients with a total of 582 implants. Implant stability is measured with resonance frequency analysis and evaluated based on the implant stability quotient (ISQ). A linear regression model with regression coefficients (reg. coeff.) and its 95% confidence interval (95% CI) is applied to assess predictive factors for implant stability. Implant diameter (reg. coeff.: 3.28; 95% CI: 1.89–4.66, p < 0.001), implant length (reg. coeff.: 0.67, 95% CI: 0.26–1.08, p < 0.001), and implant localization (maxillary vs. mandibular, reg. coeff.: −7.45, 95% CI: −8.70–(−6.20), p < 0.001) are significant prognostic factors for primary implant stability. An increase in ISQ between insertion and exposure is significantly correlated with healing time (reg. coeff.: 0.11, 95% CI: 0.04–0.19). Patients with maxillary implants have lower ISQ at insertion but show a higher increase in ISQ after insertion than patients with mandibular implants. We observe positive associations between primary implant stability and implant diameter, implant length, and localization (mandibular vs. maxillary). An increase in implant stability between insertion and exposure is significantly correlated with healing time and is higher for maxillary implants. These predictive factors should be further evaluated in prospective cohort studies to develop future preoperative risk-stratification models.
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Morphological Evaluation of Bone by CT to Determine Primary Stability-Clinical Study. MATERIALS 2020; 13:ma13112605. [PMID: 32521622 PMCID: PMC7321591 DOI: 10.3390/ma13112605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/02/2020] [Accepted: 06/02/2020] [Indexed: 11/17/2022]
Abstract
Background: Primary stability is an important prognostic factor for dental implant therapy. In the present study, we evaluate the relationship between implant stability evaluation findings by the use of an implant stability quotient (ISQ), an index for primary stability, and a morphological evaluation of bone by preoperative computed tomography (CT). Subjects and methods: We analyzed 98 patients who underwent implant placement surgery in this retrospective study. For all 247 implants, the correlations of the ISQ value with cortical bone thickness, cortical bone CT value, cancellous bone CT value, insertion torque value, implant diameter, and implant length were examined. Results: 1. Factors affecting ISQ values in all cases: It was revealed that there were significant associations between the cortical bone thickness and cancellous bone CT values with ISQ by multiple regression analysis. 2. It was revealed that there was a significant correlation between cortical bone thickness and cancellous bone CT values with ISQ by multiple regression analysis in the upper jaw. 3. It was indicated that there was a significant association between cortical bone thickness and implant diameter with ISQ by multiple regression analysis in the lower jaw. Conclusion: We concluded that analysis of the correlation of the ISQ value with cortical bone thickness and values obtained in preoperative CT imaging were useful preoperative evaluations for obtaining implant stability.
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Wang X, Zhang T, Yang E, Gong Z, Shen H, Wu H, Zhang D. Biomechanical Analysis of Grafted and Nongrafted Maxillary Sinus Augmentation in the Atrophic Posterior Maxilla with Three-Dimensional Finite Element Method. SCANNING 2020; 2020:8419319. [PMID: 33093935 PMCID: PMC7556061 DOI: 10.1155/2020/8419319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/18/2020] [Accepted: 09/18/2020] [Indexed: 05/12/2023]
Abstract
This study is aimed at determining the optimal sinus augmentation approach considering the poor bone condition in the zone of atrophic posterior maxilla. A series of simplified maxillary segment models varying in residual bone height (RBH) and bone quality were established. A 10 mm standard implant combined with two types of maxillary sinus augmentation methods was applied with the RBH, which was less than 10 mm in the maxilla. The maximal equivalent von Mises (EQV) stress in residual bone was evaluated. Bone quality had an enormous impact on the stress magnitude of supporting bone. Applying sinus augmentation combined with grafts was suitable for stress distribution, and high-stiffness graft performed better than low-stiffness one. For 7 mm and 5 mm atrophic maxilla, nongrafted maxillary sinus augmentation was feasible in D3 bone. Poor bone quality was a negative factor for the implant in the region of atrophic posterior maxilla, which could be improved by grafts. Meanwhile, the choice of maxillary sinus augmentation approaches should be determined by the RBH and quality.
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Affiliation(s)
- Xuan Wang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Tianqi Zhang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Enli Yang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Zhiyuan Gong
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Hongzhou Shen
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Haiwei Wu
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Dongsheng Zhang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
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Kästel I, de Quincey G, Neugebauer J, Sader R, Gehrke P. Does the manual insertion torque of smartpegs affect the outcome of implant stability quotients (ISQ) during resonance frequency analysis (RFA)? Int J Implant Dent 2019; 5:42. [PMID: 31828457 PMCID: PMC6906278 DOI: 10.1186/s40729-019-0195-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 10/29/2019] [Indexed: 11/10/2022] Open
Abstract
Background There is disagreement about the optimal torque for tightening smartpegs for resonance frequency analysis (RFA). Subjective finger pressure during hand tightening could affect the reliability of the resulting values. The aim of the current study was therefore to assess whether or not the insertion torque of a smartpeg magnetic device influences the implant stability quotient (ISQ) value during RFA. Methods Thirty self-tapping screw implants (XiVE S, Dentsply Sirona Implants, Bensheim, Germany) with a diameter of 3.8 mm and a length of 11 mm were inserted in three cow ribs with a bone quality of D1. The RFA value of each implant was measured (Ostell, FA W&H Dentalwerk, Bürmoos, Austria) in two orthogonal directions (mesial and buccal) after tightening the corresponding smartpeg type 45 with a mechanically defined value of 5 Ncm (Meg Torq device, Megagen, Daegu, South Korea) (test). Additionally, 4 different examiners measured the RFA after hand tightening the smartpegs, and the results were compared (control). Insertion torque values were determined by measuring the unscrew torque of hand seated smartpegs (Tohnichi Manufacturing Co. Ltd, Tokyo, Japan). Results The ISQ values varied from 2 to 11 Ncm by hand tightening and from 2 to 6 Ncm by machine tightening. The comparison of hand and machine tightening of smartpegs displayed only minor differences in the mean ISQ values with low standard deviations (mesial 79.76 ± 2,11, buccal 77.98 ± 2,) and no statistical difference (mesial p = 0,343 and buccal p = 0,890). Conclusions Manual tightening of smartpeg transducers allows for an objective and reliable determination of ISQ values during RFA.
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Affiliation(s)
| | - Giles de Quincey
- , Rosmalen, Netherlands.,Department of Periodontology, University of Bern, Bern, Switzerland
| | - Jörg Neugebauer
- Interdisciplinary Department of Oral Surgery and Implantology, Department of Craniomaxillofacial and Plastic Surgery, University of Cologne, Cologne, Germany.,, Landsberg am Lech, Germany
| | - Robert Sader
- Department for Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University, Frankfurt, Germany
| | - Peter Gehrke
- , Ludwigshafen, Germany.,Department of Postgraduate Education, Master of Oral Implantology, Oral and Dental Medicine, Johann Wolfgang Goethe-University, Frankfurt, Germany
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Carré F, Achard S, Rouillon I, Parodi M, Loundon N. Hearing impairment and osteogenesis imperfecta: Literature review. Eur Ann Otorhinolaryngol Head Neck Dis 2019; 136:379-383. [DOI: 10.1016/j.anorl.2019.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ab TK, T CN, Ps GD, Triveni MG, Mehta DS. A clinico-radiographic and histomorphometric analysis of alveolar ridge preservation using calcium phosphosilicate, PRF, and collagen plug. Maxillofac Plast Reconstr Surg 2019; 41:32. [PMID: 31523690 PMCID: PMC6717742 DOI: 10.1186/s40902-019-0215-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 07/22/2019] [Indexed: 11/13/2022] Open
Abstract
Background Tooth extraction commonly leads to loss of residual alveolar ridge, thus compromising the room available for the implant placement. To combat the post-extraction alveolar loss, alveolar ridge preservation is practiced, with the advent of the biomaterial available. The purpose of this study was to assess the efficiency of calcium phosphosilicate biomaterial in alveolar ridge preservation. Twenty patients indicated for extraction were selected followed by socket grafting using calcium phosphosilicate. Implant placement was done 6 months postoperatively during which a core was harvested from the preserved sockets. Clinico-radiographic measurements of hard and soft tissues were taken at baseline and 6 months post-grafting. Results There were no significant changes in the radiographic and soft tissue parameters while significant changes in hard tissue parameters with 1.9 mm (p = 0.013) gain in mid-buccal aspect and 1.1 mm (p = 0.019) loss in horizontal bone width were observed. The histomorphometric evaluation depicted the vital bone volume of 54.5 ± 16.76%, non-mineralized tissue 43.50 ± 15.80%, and residual material 2.00 ± 3.37%. Conclusion The implants placed in these preserved ridges presented 100% success rate with acceptable stability after a 1-year follow-up, concluding calcium phosphosilicate is a predictable biomaterial in alveolar ridge preservation.
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Affiliation(s)
- Tarun Kumar Ab
- 1Department of Periodontics, Bapuji Dental College and Hospital, Davangere, Karnataka 577004 India
| | - Chaitra N T
- Happy smiles Dental Care, Vidyanagar, Davangere, Karnataka 577004 India
| | | | - M G Triveni
- 1Department of Periodontics, Bapuji Dental College and Hospital, Davangere, Karnataka 577004 India
| | - Dhoom Singh Mehta
- 1Department of Periodontics, Bapuji Dental College and Hospital, Davangere, Karnataka 577004 India
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Does the Drilling Technique for Implant Site Preparation Enhance Implant Success in Low-Density Bone? A Systematic Review. IMPLANT DENT 2019; 28:500-509. [PMID: 31205268 DOI: 10.1097/id.0000000000000917] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The objective of this systematic review was to investigate the possible association between the drilling technique and proper implant integration and survival in areas with low bone density. MATERIALS AND METHODS An electronic search using the MEDLINE/PubMed database was performed including studies published up to April 2018. Animal and clinical studies that evaluated the association between the drilling technique and proper implant integration and survival in low-density bone were included. RESULTS Fifteen studies met the inclusion criteria, including 7 experimental and 8 clinical. Undersized, osteotome, Piezosurgery, and osseodensification drilling were the 4 techniques found in the literature to enhance osseointegration of implants in low-density bone. Owing to the methodological variation, meta-analysis was not performed. The 4 drilling protocols were effective in increasing primary stability, but the long-term outcome is comparable with that of the conventional surgical drilling protocol. CONCLUSION There is weak evidence suggesting that any of the previously mentioned surgical techniques could enhance successful osseointegration and survival of the implants placed in low-density bone.
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Huang MT, Juan PK, Chen SY, Wu CJ, Wen SC, Cho YC, Huang MS, Chou HH, Ou KL. The potential of the three-dimensional printed titanium mesh implant for cranioplasty surgery applications: Biomechanical behaviors and surface properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 97:412-419. [DOI: 10.1016/j.msec.2018.11.075] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 08/12/2018] [Accepted: 11/28/2018] [Indexed: 11/26/2022]
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Resonance Frequency Analysis of Tapered Implants Placed at Maxillary Posterior Sites After Lateral Sinus Augmentation: A 1.5-year Follow-Up Prospective Study. IMPLANT DENT 2019; 28:62-67. [PMID: 30640311 DOI: 10.1097/id.0000000000000858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To use resonance frequency analysis to evaluate tapered implants placed at maxillary posterior sites after lateral sinus augmentation. MATERIALS AND METHODS Patients who had missing teeth in the maxillary posterior area and required lateral sinus augmentation before implant placement were enrolled in this study. After a 6-month healing period, a tapered implant (Osstem TSIV) was placed. Implant success rate, survival rate, and marginal bone loss of the implants were measured. For resonance frequency analysis, implant stability quotient (ISQ) values were measured at each visit during a 1.5-year follow-up period. RESULTS Twenty-four patients completed the study procedure. The residual bone height was 2.57 ± 1.10 mm (mean ± SD). Healing of the grafted area was uneventful in all cases, and 55 tapered implants were installed. The implant success rate was 95.56%, and the survival rate was 100% throughout the observation period. The marginal bone loss was limited to 0.22 ± 0.44 mm. ISQ increased gradually from 68.40 ± 11.14 to 82.24 ± 4.75 during the 1.5-year follow-up period. CONCLUSION The tapered implants showed good initial and final stability after placement in the soft bone of the maxillary posterior area after lateral sinus augmentation.
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Wang S, Ogawa T, Zheng S, Miyashita M, Tenkumo T, Gu Z, Lian W, Sasaki K. The effect of low-magnitude high-frequency loading on peri-implant bone healing and implant osseointegration in Beagle dogs. J Prosthodont Res 2018; 62:497-502. [PMID: 30139715 DOI: 10.1016/j.jpor.2018.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/04/2018] [Accepted: 07/10/2018] [Indexed: 10/28/2022]
Abstract
PURPOSE Low-magnitude, high-frequency (LMHF) loading plays an important role in bone healing. The present study aimed to evaluate the effect of LMHF loading applied directly to titanium dental implants on peri-implant bone healing and implant osseointegration. METHODS The mandibular premolars and molars were extracted from six male Beagle dogs. Three months post-extraction, each of the six dogs had three titanium implants (Aadva Standard Implant Narrow, Φ3.3×8mm) inserted into the mandibular premolar and molar area (three implants per side). In each animal, one side was randomly selected to undergo daily LMHF loading (treatment group), while the other side had no further intervention (control). The loading was applied directly to the implant abutment using an individual jig and a custom-made loading device (8μm, 100Hz). The implant stability quotient (ISQ) was tested every week. Three dogs were euthanized after 2 weeks, and three were euthanized after 8 weeks. Tissue samples were fixed and stained for micro-computed tomography (micro-CT) and histomorphometric analyses. Data were analyzed statistically, with significance set at p<0.05. RESULTS The treatment group had significantly increased peri-implant bone volume relative to tissue volume in region of interest 2 (100-500μm) compared with the control group after 2 weeks of loading (p<0.05); however, there was no significant difference between groups after 8 weeks. The ISQ value and the micro-CT results did not differ between groups during the study period. CONCLUSIONS LMHF loading positively influenced peri-implant bone healing in the early healing period.
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Affiliation(s)
- Shuhua Wang
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan; School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Toru Ogawa
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
| | - Sheng Zheng
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan; School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Makiko Miyashita
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Taichi Tenkumo
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Zhiyuan Gu
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Wenhai Lian
- School of Stomatology, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
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Lahens B, Lopez CD, Neiva RF, Bowers MM, Jimbo R, Bonfante EA, Morcos J, Witek L, Tovar N, Coelho PG. The effect of osseodensification drilling for endosteal implants with different surface treatments: A study in sheep. J Biomed Mater Res B Appl Biomater 2018; 107:615-623. [PMID: 30080320 DOI: 10.1002/jbm.b.34154] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 04/18/2018] [Accepted: 04/22/2018] [Indexed: 01/04/2023]
Abstract
This study investigated the effects of osseodensification drilling on the stability and osseointegration of machine-cut and acid-etched endosteal implants in low-density bone. Twelve sheep received six implants inserted into the ilium, bilaterally (n = 36 acid-etched, and n = 36 as-machined). Individual animals received three implants of each surface, placed via different surgical techniques: (1) subtractive regular-drilling (R): 2.0 mm pilot, 3.2 and 3.8 mm twist drills); (2) osseodensification clockwise-drilling (CW): Densah Bur (Versah, Jackson, MI) 2.0 mm pilot, 2.8, and 3.8 mm multifluted tapered burs; and (3) osseodensification counterclockwise-drilling (CCW) Densah Bur 2.0 mm pilot, 2.8 mm, and 3.8 mm multifluted tapered burs. Insertion torque was higher in the CCW and CW-drilling compared to the R-drilling (p < 0.001). Bone-to-implant contact (BIC) was significantly higher for CW (p = 0.024) and CCW-drilling (p = 0.006) compared to the R-drilling technique. For CCW-osseodensification-drilling, no statistical difference between the acid-etched and machine-cut implants at both time points was observed for BIC and BAFO (bone-area-fraction-occupancy). Resorbed bone and bone forming precursors, preosteoblasts, were observed at 3-weeks. At 12-weeks, new bone formation was observed in all groups extending to the trabecular region. In low-density bone, endosteal implants inserted via osseodensification-drilling presented higher stability and no osseointegration impairments compared to subtractive regular-drilling technique, regardless of evaluation time or implant surface. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 615-623, 2019.
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Affiliation(s)
- Bradley Lahens
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010
| | - Christopher D Lopez
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010
| | - Rodrigo F Neiva
- Department of Periodontology, University of Florida College of Dentistry, Gainesville, Florida, 32610
| | - Michelle M Bowers
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010
| | - Ryo Jimbo
- Department of Oral and Maxillofacial Surgery and Oral Medicine, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Estevam A Bonfante
- Department of Prosthodontics and Periodontology, University of Sao Paulo, Bauru School of Dentistry, Bauru, Sao Paulo, Brazil
| | - Jonathan Morcos
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010.,Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York, 10016
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Garg R, Mishra N, Alexander M, Gupta SK. Implant Survival between Endo-osseous Dental Implants in Immediate Loading, Delayed Loading, and Basal Immediate Loading Dental Implants a 3-Year Follow-up. Ann Maxillofac Surg 2017; 7:237-244. [PMID: 29264292 PMCID: PMC5717901 DOI: 10.4103/ams.ams_87_17] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction: With introduction of the term “ossteointegration of dental implant” by Branemark, advancement in implantology from 1957 to 2017 has come a long way with modification in implant type and in loading time. This study aims to evaluate the survival of endo-osseous immediate loading (IL) implant and basal IL implants in atrophic jaws with objective to compare implant survival in atrophic jaws for full mouth rehabilitation between endo-osseous IL versus endo-osseous delayed loading (DL) versus basal IL during 3-year follow-up. Materials and Methods: Fifty-two (34 endo-osseous and 18 basal) implants were placed in 4 patients requiring full mouth rehabilitation in atrophic jaws. Case 1: Endo-osseous DL implants in upper and lower arch, Case 2: Endo-osseous IL implants in upper and lower arch, Case 3: Basal IL implant in upper and lower arch, and Case 4: Endo-osseous DL in upper arch and basal IL implant in the lower arch. Intraoperative evaluation was done on the basis of pain (visual analog scale [VAS]), operative time, and initial primary implant stability. Postoperative evaluation was done on pain (VAS), infection, radiographically successful implant (orthopantomogram), and patient satisfaction (Grade 0–10). Results: All cases showed satisfactory results but more amount of intra- and post-operative pain was felt with immediate basal implants. Conclusion: We believe that clinicians should comply with patient requests, and for this reason, we agree with some authors to use minimally invasive techniques and to avoid when possible esthetic or functional problems associated with the use of removable prosthesis after teeth extractions.
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Affiliation(s)
- Ritesh Garg
- Department of Oral and Maxillofacial Surgery, Institute of Dental Studies and Technology, Modinagar, Uttar Pradesh, India
| | - Neha Mishra
- Department of Endodontics and Conservative Dentistry, DJ College of Dental Science an Studies, Modinagar, Uttar Pradesh, India
| | - Mohan Alexander
- Department of Oral and Maxillofacial Surgery, MAHSA University, Kuala Lumpur, Malaysia
| | - Sunil Kumar Gupta
- Department of Oral and Maxillofacial Surgery, Saraswati Medical College, Hapur, Uttar Pradesh, India
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Hou PJ, Ou KL, Wang CC, Huang CF, Ruslin M, Sugiatno E, Yang TS, Chou HH. Hybrid micro/nanostructural surface offering improved stress distribution and enhanced osseointegration properties of the biomedical titanium implant. J Mech Behav Biomed Mater 2017; 79:173-180. [PMID: 29306080 DOI: 10.1016/j.jmbbm.2017.11.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 11/09/2017] [Accepted: 11/25/2017] [Indexed: 01/24/2023]
Abstract
OBJECTIVES The aim of the present study was to investigate the surface characteristic, biomechanical behavior, hemocompatibility, bone tissue response and osseointegration of the optimal micro-arc oxidation surface-treated titanium (MST-Ti) dental implant. MATERIALS AND METHODS The surface characteristic, biomechanical behavior and hemocompatibility of the MST-Ti dental implant were performed using scanning electron microscope, finite element method, blood dripping and immersion tests. The mini-pig model was utilized to evaluate the bone tissue response and osseointegration of the MST-Ti dental implant in vivo. Data were analyzed by analysis of variance using the Student's t-test (P ≤ 0.05). RESULTS The hybrid volcano-like micro/nanoporous structure was formed on the surface of the MST-Ti dental implant. The hybrid volcano-like micro/nanoporous surface played an important role to improve the stress transfer between fixture, cortical bone and cancellous bone for the MST-Ti dental implant. Moreover, the MST-Ti implant was considered to have the outstanding hemocompatibility. In vivo testing results showed that the bone-to-implant contact (BIC) ratio significantly altered as the implant with micro/nanoporous surface. After 12 weeks of implantation, the MST-Ti dental implant group exhibited significantly higher BIC ratio than the untreated dental implant group. In addition, the MST-Ti dental implant group also presented an enhancing osseointegration, particularly in the early stages of bone healing. CONCLUSION It can be concluded that the micro-arc oxidation approach induced the formation of micro/nanoporous surface is a promising and reliable alternative surface modification for Ti dental implant applications.
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Affiliation(s)
- Ping-Jen Hou
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan
| | - Keng-Liang Ou
- Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan; Department of Dentistry, Taipei Medical University-Shuang Ho Hospital, New Taipei City 235, Taiwan; Department of Dentistry, Cathay General Hospital, Taipei 106, Taiwan; 3D Global Biotech Inc., New Taipei City 221, Taiwan
| | - Chin-Chieh Wang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Chiung-Fang Huang
- Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan; School of Dental Technology, Taipei Medical University, Taipei 110, Taiwan
| | - Muhammad Ruslin
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia
| | - Erwan Sugiatno
- Department of Prosthodontic, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Tzu-Sen Yang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan; School of Biomedical Engineering, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; Graduate Institute of Nanomedicine and Medical Engineering, Taipei Medical University, Taipei 110, Taiwan.
| | - Hsin-Hua Chou
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; Department of Prosthodontic, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia; Department of Dentistry, Taipei Medical University-Wan Fang Hospital, Taipei 116, Taiwan.
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The effect of 2 versus 4 implants on implant stability in mandibular overdentures: A randomized controlled trial. J Prosthet Dent 2017; 118:725-731. [PMID: 28389025 DOI: 10.1016/j.prosdent.2016.12.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/09/2016] [Accepted: 12/09/2016] [Indexed: 10/19/2022]
Abstract
STATEMENT OF PROBLEM Dental research is rich with articles that investigated the influence of host-site variables, some implant-related variables (implant length, diameter, taper, design, location, and surface topography), different loading protocols or surgical procedures, and measurement methodology on dental implant stability. However, the number of implants and its effect on implant stability remain unclear. PURPOSE The purpose of this randomized clinical trial was to investigate the influence of implant number on implant stability by comparing 2 versus 4 implants in mandibular implant overdentures. MATERIAL AND METHODS The trial included 20 participants with edentulous mandibular ridges. Participants were randomly assigned to 2 equal groups, a 4-implant (experimental) group consisting of 4 implants installed in lateral-canine and premolar regions; and a 2-implant (control) group, consisting of 2 implants in lateral-canine regions. Implant stability was measured using resonance frequency analysis at implant placement and then at 1, 3, 6, 9, and 12 months. The Student t test was used to compare the implant stability quotient (ISQ) values of the anterior implants in the 4-implant and 2-implant groups. One-way ANOVA followed by the post hoc Bonferroni test was used to compare ISQ values among the different follow-up periods within each group (α=.05). RESULTS Mean ISQ values for anterior implants in the 4-implant group were slightly higher than those recorded for the 2-implant group at all follow-up periods. However, these differences were not statistically significant (P>.05). Within-group comparison revealed an initial decrease in implant stability for all implants. This decrease was statistically significant for the 2-implant group (P<.001) and for posterior implants in the 4-implant group (P<.001). This was then followed by a gradual increase in ISQ values for all implants in both groups. CONCLUSIONS Increasing the number of implants from 2 to 4 in mandibular implant overdentures did not have a significant influence on implant stability.
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Falisi G, Severino M, Rastelli C, Bernardi S, Caruso S, Galli M, Lamazza L, Di Paolo C. The effects of surgical preparation techniques and implant macro-geometry on primary stability: An in vitro study. Med Oral Patol Oral Cir Bucal 2017; 22:e201-e206. [PMID: 28160577 PMCID: PMC5359712 DOI: 10.4317/medoral.21286] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 01/12/2017] [Indexed: 01/16/2023] Open
Abstract
Background The attainment of a good primary stability is a necessary condition to ensure the success of osseointegration in implantology. In type IV cancellous bone, however, it is possible that a reduced primary stability can lead to an increased rate of failure.
The aim of this study was therefore to determine, with the help of the resonance frequency (Osstell mentor), which technique of implant site preparation (piezo surgery, conventional, under-preparation, bone compaction, osteodistraction) and macro-geometry is able to improve implant stability in type IV cancellous bone. Material and Methods 10 pig ribs were prepared with a surgical pre-drilled guide, calibrated for a correct implant positioning. On each rib, 5 implant sites (one for each technique) were prepared. Successively, 50 conical implants (Tekka Global D) were inserted and measured with the resonance frequency to evaluate the primary stability. Data collected were analyzed by analysis of variance (ANOVA) to test whether the Implant Stability Quotient (ISQ) values of the five techniques were significantly different. Results The results showed that no significant differences among the ISQ values of the five techniques used were found. Also, no significant differences in the macro-geometry of the two types of compared implants were observed. However, the macro-geometry of Tekka implants, characterized by a double condensing thread, seems to provide greater ISQ values than those of single thread implants when using the same technique. Conclusions In light of these preliminary data, it is conceivable that in cases of reduced stability, such as those occurring with a type IV bone, all means ameliorating the primary stability and accelerating the osseointegration can be utilized. Key words:Implant primary stability, resonance frequency analysis, implant site preparation.
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Affiliation(s)
- G Falisi
- Department of Life, Health, and Environmental Sciences, School of Dentistry, University of L'Aquila, Piazzale Salvatore Tommasi 1, 67100 Coppito (AQ), L'Aquila, Italy,
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Lahens B, Neiva R, Tovar N, Alifarag AM, Jimbo R, Bonfante EA, Bowers MM, Cuppini M, Freitas H, Witek L, Coelho PG. Biomechanical and histologic basis of osseodensification drilling for endosteal implant placement in low density bone. An experimental study in sheep. J Mech Behav Biomed Mater 2016; 63:56-65. [PMID: 27341291 DOI: 10.1016/j.jmbbm.2016.06.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/13/2016] [Accepted: 06/04/2016] [Indexed: 12/31/2022]
Abstract
A bone drilling concept, namely osseodensification, has been introduced for the placement of endosteal implants to increase primary stability through densification of the osteotomy walls. This study investigated the effect of osseodensification on the initial stability and early osseointegration of conical and parallel walled endosteal implants in low density bone. Five male sheep were used. Three implants were inserted in the ilium, bilaterally, totaling 30 implants (n=15 conical, and n=15 parallel). Each animal received 3 implants of each type, inserted into bone sites prepared as follows: (i) regular-drilling (R: 2mm pilot, 3.2mm, and 3.8mm twist drills), (ii) clockwise osseodensification (CW), and (iii) counterclockwise (CCW) osseodensification drilling with Densah Bur (Versah, Jackson, MI, USA): 2.0mm pilot, 2.8mm, and 3.8mm multi-fluted burs. Insertion torque as a function of implant type and drilling technique, revealed higher values for osseodensification relative to R-drilling, regardless of implant macrogeometry. A significantly higher bone-to-implant contact (BIC) for both osseodensification techniques (p<0.05) was observed compared to R-drilling. There was no statistical difference in BIC as a function of implant type (p=0.58), nor in bone-area-fraction occupancy (BAFO) as a function of drilling technique (p=0.22), but there were higher levels of BAFO for parallel than conic implants (p=0.001). Six weeks after surgery, new bone formation along with remodeling sites was observed for all groups. Bone chips in proximity with the implants were seldom observed in the R-drilling group, but commonly observed in the CW, and more frequently under the CCW osseodensification technique. In low-density bone, endosteal implants present higher insertion torque levels when placed in osseodensification drilling sites, with no osseointegration impairment compared to standard subtractive drilling methods.
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Affiliation(s)
- Bradley Lahens
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, New York, NY 10010, USA
| | - Rodrigo Neiva
- Department of Periodontology, University of Florida College of Dentistry, 1395 Center Drive, Gainesville, FL 32610, USA
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, New York, NY 10010, USA
| | - Adham M Alifarag
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, New York, NY 10010, USA
| | - Ryo Jimbo
- Department of Oral and Maxillofacial Surgery and Oral Medicine, Faculty of Odontology, Malmö University, Malmö 205 06, Sweden
| | - Estevam A Bonfante
- Department of Prosthodontics, University of Sao Paulo, Bauru College of Dentistry, Al. Dr. Octavio Pinheiro Brisola, 9-75, Bauru, Sao Paulo 17012-901, Brazil
| | - Michelle M Bowers
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, New York, NY 10010, USA
| | - Marla Cuppini
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, New York, NY 10010, USA
| | - Helora Freitas
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, New York, NY 10010, USA
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, New York, NY 10010, USA
| | - Paulo G Coelho
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 433 1st Ave, New York, NY 10010, USA; Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, NY 10016, USA.
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Golab KG, Kashani IR, Azami-Tameh A, Zaminy A, Nik IN, Nik SN. Evaluation of the effect of adipose tissue-derived stem cells on the quality of bone healing around implants. Connect Tissue Res 2015; 57:10-9. [PMID: 26691556 DOI: 10.3109/03008207.2015.1079180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE/AIM This study evaluates the efficacy of grafted adipose-derived stem cells (ADSCs) on blade-type implants in improving osseointegration in rat femurs using a low-density bone model. MATERIALS AND METHODS After isolating and expanding ADSCs, twice-passaged cells were seeded on blade-type implants on culture plates. Osteogenic induction of grafted cells began after attaching cells to the prepared titanium surfaces and it continued for 4 days. The scaffolds were then implanted in the femurs of Wistar rats. Osteogenic differentiation of these cells was confirmed using polymerase chain reaction (PCR) and alizarin red staining of the mineralized extracellular matrix. After 8 weeks, histological and histomorphometric evaluations of undecalcified resin sections (bone-implant contact [BIC] % and bone mineral index [BMI]) were performed using light microscopy and scanning electron microscopy. RESULTS Alizarin red staining in conjunction with gene expression results confirmed osteogenic differentiation. Histomorphometric assessment using scanning electron microscopy demonstrated improved BIC% and BMI near the treated surface compared with the untreated surface. CONCLUSIONS The complex of differentiated grafted ADSCs and extracellular matrix and the macrodesign and microdesign of the implant can improve osseointegration in low-density bone.
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Affiliation(s)
| | - Iraj Ragerdi Kashani
- b Department of Anatomy , School of Medicine, Medical Sciences, University of Tehran , Tehran , Iran
| | - Abolfazl Azami-Tameh
- c Anatomical Sciences Research Center , Kashan University of Medical Sciences , Kashan , Iran
| | - Arash Zaminy
- d Department of Anatomy , School of Medicine, Guilan University of Medical Sciences , Rasht , Iran
| | - Iman Namjoy Nik
- e Faculty of Life Sciences , University of Manchester , Manchester , United Kingdom
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Successful bone-anchored hearing aid implantation in a patient with osteogenesis imperfecta. The Journal of Laryngology & Otology 2015; 129:1133-6. [DOI: 10.1017/s0022215115002510] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractObjective:To report a case of successful bone-anchored hearing aid implantation in an adult patient with type III osteogenesis imperfecta, which is commonly regarded as a contraindication to this procedure.Case report:A 45-year-old man with type III osteogenesis imperfecta presented with mixed hearing loss. There was a mild sensorineural component in both ears, with an air–bone gap between 45 and 50 dB HL. He was implanted with a bone-anchored hearing aid. The audiological outcome was good, with no complications and good implant stability (as measured by resonance frequency analysis).Conclusion:To our knowledge, this is the first recorded case of bone-anchored hearing aid implantation in a patient with osteogenesis imperfecta.
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Sanz-Sánchez I, Sanz-Martín I, Figuero E, Sanz M. Clinical efficacy of immediate implant loading protocols compared to conventional loading depending on the type of the restoration: a systematic review. Clin Oral Implants Res 2015; 26:964-982. [PMID: 24917174 DOI: 10.1111/clr.12428] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2014] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND OBJECTIVES Immediate loading has become a predictable option to restore all clinical situations. The aim of this systematic review was to assess whether immediate loading protocols achieve comparable clinical outcomes when compared to conventional loading protocols depending on the type of prosthetic restoration. METHODS A protocol was developed aimed to answer the following focused question: "What are the effects of immediate implant loading protocols compared to conventional implant loading, in terms of implant failure, marginal bone levels, and biological and mechanical complications based on the type of restoration?" The next subanalysis were performed as follows: the extent, type, and material of the restoration and the type of occlusal contact in function. This systematic review only included randomized controlled trials (RCTs) with a follow-up of at least 6 months after implant loading. RESULTS Thirty-seven final papers were included. The results from the meta-analyses have shown that the immediately loading implants demonstrated a statistically significant higher risk of implant failure [RR = 1.92; 95% CI (1.04; 3.54); P = 0.036], a statistically significant lower bone loss [WMD = 0.046; 95% CI (0.043; 0.049); P = 0.000] and a smaller increase in ISQ values [WMD = -1.096; 95% CI (-1.615; -0.577); P < 0.001, although both groups attained high survival rates (98.2% in the test and 99.6% in the control). Single teeth implants were greater risk of failure, when compared to immediately loaded full arch restorations (RR = 2 vs. 0.9), so as the occlusal pattern when compared to non-occlusal (RR = 1.9 vs. 1.4). CONCLUSIONS Immediate loading may impose a greater risk for implant failure when compared to conventional loading, although the survival rates were high for both groups.
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Affiliation(s)
| | | | - Elena Figuero
- Section of Graduate Periodontology, University Complutense, Madrid, Spain
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
| | - Mariano Sanz
- Section of Graduate Periodontology, University Complutense, Madrid, Spain
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, University Complutense, Madrid, Spain
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Daas M, Assaf A, Dada K, Makzoumé J. Computer-Guided Implant Surgery in Fresh Extraction Sockets and Immediate Loading of a Full Arch Restoration: A 2-Year Follow-Up Study of 14 Consecutively Treated Patients. Int J Dent 2015; 2015:824127. [PMID: 26064119 PMCID: PMC4443938 DOI: 10.1155/2015/824127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 04/27/2015] [Accepted: 04/27/2015] [Indexed: 12/03/2022] Open
Abstract
Statement of Problem. Low scientific evidence is identified in the literature for combining implant placement in fresh extraction sockets with immediate function. Moreover, the few studies available on immediate implants in postextraction sites supporting immediate full-arch rehabilitation clearly lack comprehensive protocols. Purpose. The purpose of this study is to report outcomes of a comprehensive protocol using CAD-CAM technology for surgical planning and fabrication of a surgical template and to demonstrate that immediate function can be easily performed with immediate implants in postextraction sites supporting full-arch rehabilitation. Material and Methods. 14 subjects were consecutively rehabilitated (13 maxillae and 1 mandible) with 99 implants supporting full-arch fixed prostheses followed between 6 and 24 months (mean of 16 months). Outcome measures were prosthesis and implant success, biologic and prosthetic complications, pain, oedema evaluation, and radiographic marginal bone levels at surgery and then at 6, 12, 18, and 24 months. Data were analyzed with descriptive statistics. Results. The overall cumulative implant survival rate at mean follow-up time of 16 months was 97.97%. The average marginal bone loss was 0,9 mm. Conclusions. Within the limitations of this study, the results validate this treatment modality for full-arch rehabilitations with predictable outcomes and high survival rate after 2 years.
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Affiliation(s)
- M. Daas
- Department of Prosthodontics, René Descartes University, Paris, France
- Private Practice, 62 Boulevard de la Tour Maubourg, 75007 Paris, France
| | - A. Assaf
- Department of Prosthodontics, Beirut Arab University, Beirut, Lebanon
- Department of Prosthodontics, Lebanese University, Beirut, Lebanon
| | - K. Dada
- Private Practice, 62 Boulevard de la Tour Maubourg, 75007 Paris, France
- Former Clinical Associate, Louis Mournier Hospital, Colombes, France
| | - J. Makzoumé
- Department of Removable Prosthodontics, Saint-Joseph University, Beirut, Lebanon
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Anil S, Aldosari AA. Impact of Bone Quality and Implant Type on the Primary Stability: An Experimental Study Using Bovine Bone. J ORAL IMPLANTOL 2015; 41:144-8. [DOI: 10.1563/aaid-joi-d-11-00156] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purpose of this in vitro study was to compare the primary stability and removal torque of bone level and tissue level implants in different bone qualities. Twenty tissue level and bone level implants (3.3 × 10 mm and 4.1 × 10 mm) were used for assessing the stability in type II and type IV bone. Forty bovine rib blocks were used in this study. The primary stability of the implant was measured by the resonance frequency using an Osstel device. The removal torque values (RTV) of the implants was assessed using a digital torque gauge instrument. The implant stability quotient (ISQ) values and the RTV showed a marginally higher stability with bone level implants as compared to tissue level implants. However, these differences were not statistically significant in both type of bone used (P > 0.05). On the other hand, compared to type IV, type II bone showed significant differences in the ISQ (P < 0.01) and RTV (P < 0.001) of bone level and tissue level implants. The study concluded that bone quality is an important factor in establishing primary stability than the implant dimension. Bone level and tissue level implants of same dimensions can be selected based on the esthetic demands since they showed similar mechanical properties.
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Affiliation(s)
- Sukumaran Anil
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Abdullah Alfarraj Aldosari
- Department of Prosthetic Science, Dental Implant and Osseointegration Research Chair, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
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Influence of thread pitch, helix angle, and compactness on micromotion of immediately loaded implants in three types of bone quality: a three-dimensional finite element analysis. BIOMED RESEARCH INTERNATIONAL 2014; 2014:983103. [PMID: 25110716 PMCID: PMC4109075 DOI: 10.1155/2014/983103] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 04/16/2014] [Accepted: 04/19/2014] [Indexed: 11/27/2022]
Abstract
This study investigated the influence of thread pitch, helix angle, and compactness on micromotion in immediately loaded implants in bone of varying density (D2, D3, and D4). Five models of the three-dimensional finite element (0.8 mm pitch, 1.6 mm pitch, 2.4 mm pitch, double-threaded, and triple-threaded implants) in three types of bone were created using Pro/E, Hypermesh, and ABAQUS software. The study had three groups: Group 1, different pitches (Pitch Group); Group 2, same compactness but different helix angles (Angle Group); and Group 3, same helix angle but different compactness (Compact Group). Implant micromotion was assessed as the comprehensive relative displacement. We found that vertical relative displacement was affected by thread pitch, helix angle, and compactness. Under vertical loading, displacement was positively correlated with thread pitch and helix angle but negatively with compactness. Under horizontal loading in D2, the influence of pitch, helix angle, and compactness on implant stability was limited; however, in D3 and D4, the influence of pitch, helix angle, and compactness on implant stability is increased. The additional evidence was provided that trabecular bone density has less effect on implant micromotion than cortical bone thickness. Bone type amplifies the influence of thread pattern on displacement.
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Vivanco JF, Burgers TA, García-Rodríguez S, Crookshank M, Kunz M, MacIntyre NJ, Harrison MM, Bryant JT, Sellens RW, Ploeg HL. Estimating the density of femoral head trabecular bone from hip fracture patients using computed tomography scan data. Proc Inst Mech Eng H 2014; 228:616-626. [DOI: 10.1177/0954411914540285] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The purpose of this study was to compare computed tomography density ( ρCT) obtained using typical clinical computed tomography scan parameters to ash density ( ρash), for the prediction of densities of femoral head trabecular bone from hip fracture patients. An experimental study was conducted to investigate the relationships between ρash and ρCT and between each of these densities and ρbulk and ρdry. Seven human femoral heads from hip fracture patients were computed tomography–scanned ex vivo, and 76 cylindrical trabecular bone specimens were collected. Computed tomography density was computed from computed tomography images by using a calibration Hounsfield units–based equation, whereas ρbulk, ρdry and ρash were determined experimentally. A large variation was found in the mean Hounsfield units of the bone cores (HUcore) with a constant bias from ρCT to ρash of 42.5 mg/cm3. Computed tomography and ash densities were linearly correlated ( R2 = 0.55, p < 0.001). It was demonstrated that ρash provided a good estimate of ρbulk ( R2 = 0.78, p < 0.001) and is a strong predictor of ρdry ( R2 = 0.99, p < 0.001). In addition, the ρCT was linearly related to ρbulk ( R2 = 0.43, p < 0.001) and ρdry ( R2 = 0.56, p < 0.001). In conclusion, mineral density was an appropriate predictor of ρbulk and ρdry, and ρCT was not a surrogate for ρash. There were linear relationships between ρCT and physical densities; however, following the experimental protocols of this study to determine ρCT, considerable scatter was present in the ρCT relationships.
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Affiliation(s)
- Juan F Vivanco
- Department of Mechanical Engineering, University of Wisconsin–Madison, Madison, WI, USA
- Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Viña del Mar, Chile
| | | | | | - Meghan Crookshank
- Department of Mechanical and Materials Engineering, Queen’s University, Kingston, ON, Canada
- Human Mobility Research Centre, Kingston General Hospital, Queen’s University, Kingston, ON, Canada
| | - Manuela Kunz
- Human Mobility Research Centre, Kingston General Hospital, Queen’s University, Kingston, ON, Canada
| | - Norma J MacIntyre
- Human Mobility Research Centre, Kingston General Hospital, Queen’s University, Kingston, ON, Canada
| | - Mark M Harrison
- Human Mobility Research Centre, Kingston General Hospital, Queen’s University, Kingston, ON, Canada
- Department of Surgery, Queen’s University, Kingston, ON, Canada
| | - J Tim Bryant
- Department of Mechanical and Materials Engineering, Queen’s University, Kingston, ON, Canada
- Human Mobility Research Centre, Kingston General Hospital, Queen’s University, Kingston, ON, Canada
| | - Rick W Sellens
- Department of Mechanical and Materials Engineering, Queen’s University, Kingston, ON, Canada
- Human Mobility Research Centre, Kingston General Hospital, Queen’s University, Kingston, ON, Canada
| | - Heidi-Lynn Ploeg
- Department of Mechanical Engineering, University of Wisconsin–Madison, Madison, WI, USA
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Hernández-Cortés P, Monje A, Galindo-Moreno P, Catena A, Ortega-Oller I, Salas-Pérez J, Mesa F, Gómez-Sánchez R, Aguilar M, Aguilar D, O'Valle F. An ex vivo model in human femoral heads for histopathological study and resonance frequency analysis of dental implant primary stability. BIOMED RESEARCH INTERNATIONAL 2014; 2014:535929. [PMID: 24995307 PMCID: PMC4065718 DOI: 10.1155/2014/535929] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 05/12/2014] [Accepted: 05/19/2014] [Indexed: 11/18/2022]
Abstract
OBJECTIVE This study was designed to explore relationships of resonance frequency analysis (RFA)-assessed implant stability (ISQ values) with bone morphometric parameters and bone quality in an ex vivo model of dental implants placed in human femoral heads and to evaluate the usefulness of this model for dental implant studies. MATERIAL AND METHODS This ex vivo study included femoral heads from 17 patients undergoing surgery for femoral neck fracture due to osteoporosis (OP) (n = 7) or for total prosthesis joint replacement due to severe hip osteoarthrosis (OA) (n = 10). Sixty 4.5 × 13 mm Dentsply Astra implants were placed, followed by RFA. CD44 immunohistochemical analysis for osteocytes was also carried out. RESULTS As expected, the analysis yielded significant effects of femoral head type (OA versus OA) (P < 0.001), but not of the implants (P = 0.455) or of the interaction of the two factors (P = 0.848). Bonferroni post hoc comparisons showed a lower mean ISQ for implants in decalcified (50.33 ± 2.92) heads than in fresh (66.93 ± 1.10) or fixated (70.77 ± 1.32) heads (both P < 0.001). The ISQ score (fresh) was significantly higher for those in OA (73.52 ± 1.92) versus OP (67.13 ± 1.09) heads. However, mixed linear analysis showed no significant association between ISQ scores and morphologic or histomorphometric results (P > 0.5 in all cases), and no significant differences in ISQ values were found as a function of the length or area of the cortical layer (both P > 0.08). CONCLUSION Although RFA-determined ISQ values are not correlated with morphometric parameters, they can discriminate bone quality (OP versus OA). This ex vivo model is useful for dental implant studies.
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Affiliation(s)
- Pedro Hernández-Cortés
- Department of Traumatology and Orthopedic Surgery, “San Cecilio” Clinical Hospital, University of Granada, Spain
| | - Alberto Monje
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Pablo Galindo-Moreno
- Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain
| | - Andrés Catena
- Department of Experimental Psychology, School of Psychology, University of Granada, Granada, Spain
| | - Inmaculada Ortega-Oller
- Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain
| | - José Salas-Pérez
- Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain
| | - Francisco Mesa
- Department of Periodontics, School of Dentistry, University of Granada, Granada, Spain
| | - Rafael Gómez-Sánchez
- Department of Traumatology and Orthopedic Surgery, “San Cecilio” Clinical Hospital, University of Granada, Spain
| | - Mariano Aguilar
- Department of Pathology, School of Medicine and Institute of Biopathology and Regenerative Medicine (IBIMER), University of Granada, Granada, Spain
| | - David Aguilar
- Department of Pathology, School of Medicine and Institute of Biopathology and Regenerative Medicine (IBIMER), University of Granada, Granada, Spain
| | - Francisco O'Valle
- Department of Pathology, School of Medicine and Institute of Biopathology and Regenerative Medicine (IBIMER), University of Granada, Granada, Spain
- Departamento de Anatomía Patológica, Facultad de Medicina, 18012 Granada, Spain
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RASTELLI C, FALISI G, GATTO R, GALLI M, SACCONE E, SEVERINO M, DI PAOLO C. Implant stability in different techniques of surgical sites preparation: an in vitro study. ORAL & IMPLANTOLOGY 2014; 7:33-39. [PMID: 25694799 PMCID: PMC4302746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE In the last few decades the implantology has achieved excellent results in the prosthetic rehabilitation of the partially or totally edentulous patients. The clinicians, given the pressing demand by patients, must deal with the situations in which the lack of the availability and sometimes the low quality of the bone can lead to the treatment failure. Although the manufacturers recommend to follow codified surgical protocols, alternative techniques of preparation, apt to ensure a better primary implant stability, have been developed. The aim of this study was to determine in vitro, by using the resonance frequency (Osstell mentor), which technique of implant site preparation (piezo surgery, conventional, under-preparation, bone compaction, osteodistraction) is able to improve implant stability of type IV cancellous bone. METHODS 10 pig ribs were prepared, and a surgical pre-drilled and calibrated guide for proper implant placement was used. On each rib, 5 implant sites were prepared, one for each technique. RESULTS One-way ANOVA did not show statistically significant differences among the "implant stability quotient" (ISQ) values of the 5 techniques utilized. CONCLUSIONS Thus, in light of these results, in the clinical practice of the type IV bone one technique is replaceable with the others, as none of them improves implant stability. The choice should instead be directed to the technique that accelerates the healing process and the osseointegration.
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Affiliation(s)
- C. RASTELLI
- Department of Life, Health, and Environmental Sciences, School of Dentistry, University of L’Aquila, L’Aquila, Italy
| | - G. FALISI
- Department of Life, Health, and Environmental Sciences, School of Dentistry, University of L’Aquila, L’Aquila, Italy
| | - R. GATTO
- Department of Life, Health, and Environmental Sciences, School of Dentistry, University of L’Aquila, L’Aquila, Italy
| | - M. GALLI
- Department of Oral and Maxillofacial Sciences, “Sapienza” University of Rome, Italy
| | - E. SACCONE
- Department of Oral and Maxillofacial Sciences, “Sapienza” University of Rome, Italy
| | - M. SEVERINO
- Department of Life, Health, and Environmental Sciences, School of Dentistry, University of L’Aquila, L’Aquila, Italy
| | - C. DI PAOLO
- Department of Oral and Maxillofacial Sciences, “Sapienza” University of Rome, Italy
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