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Marcantonio ACM, de Oliveira GJPL, Tassi PA, Manfrinato JPL, Segnini B, de Souza Bezerra Araújo RF, Trojan LC, Fontão FNGK, de Mattias Sartori IA, Sartori EM, Padovan LEM, Zandim-Barcelos DL, Marcantonio E. Full-arch prostheses supported by implants with different macrostructures: A multicenter randomized controlled trial. Clin Implant Dent Relat Res 2024. [PMID: 39360638 DOI: 10.1111/cid.13392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 08/26/2024] [Accepted: 08/27/2024] [Indexed: 10/04/2024]
Abstract
OBJECTIVES This study evaluates the clinical performance of implants with hydrophilic surface and two different macrostructures: cylindrical with perforating triangular threads (CT) and cylindrical-tapered with the association of square and condensing and perforating triangular threads (TST). MATERIALS AND METHODS This was a multicenter split-mouth, simple-blinded, randomized, and controlled trial. Thirty patients with edentulous mandible received two CT and two TST implants. Primary stability was determined by insertion torque and resonance frequency analysis (RFA). Implants were loaded with full fixed-arch prostheses within 24 h after insertion. Clinical parameters (visible plaque index, marginal bleeding index; bleeding on probing; probing depth; and clinical attachment level) and the RFA were assessed at 2, 6, 12, and 24 months after implant loading. Marginal bone level changes were measured by comparison of standardized radiographs taken on the day of implant placement and 6, 12, and 24 months thereafter. RESULTS Twenty-eight patients completed the 2-year follow-up. The survival rates were 99.16% for CT implants and 100% for TST implants. One CT implant was lost until the 2 months follow-up. No significant differences were found between the two implant types for marginal bone level changes (CT 0.34 [0.24; 0.55 mm]; 0.33 [0.18; 0.55 mm]; 0.41 [0.12; 0.7 mm] vs TST 0.36 [0.14; 0.74 mm]; 0.33 [0.23; 0.63 mm]; 0.30 [0.20; 0.64 mm] at 6, 12, and 24 months, respectively) and other clinical parameters. CONCLUSION The macrostructure of the implants had no influence on survival rate, primary and secondary stability, marginal bone level changes, and peri-implant clinical parameters outcomes. Both implants can be predictably used for immediate loading of full-arch mandibular prostheses.
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Affiliation(s)
| | | | - Paulo Afonso Tassi
- Implantology, Instituto Latino-americano de Pesquisa Odontológica (ILAPEO), Curitiba, Brazil
| | | | - Bruno Segnini
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ. Est. Paulista/UNESP, Araraquara, Brazil
| | | | - Larissa Carvalho Trojan
- Implantology, Instituto Latino-americano de Pesquisa Odontológica (ILAPEO), Curitiba, Brazil
| | | | | | - Elisa Mattias Sartori
- Implantology, Instituto Latino-americano de Pesquisa Odontológica (ILAPEO), Curitiba, Brazil
| | | | - Daniela Leal Zandim-Barcelos
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ. Est. Paulista/UNESP, Araraquara, Brazil
| | - Elcio Marcantonio
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ. Est. Paulista/UNESP, Araraquara, Brazil
- Department of Periodontology, School of Dentistry at Uberlândia, Federal University of Uberlândia, Uberlândia, Brazil
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Hariharan AS, Sivaswamy V, Subhashini R. Implant-Abutment Connections: A Structured Review. J Long Term Eff Med Implants 2022; 33:47-56. [PMID: 36382704 DOI: 10.1615/jlongtermeffmedimplants.2022042610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The aim of the study was to carry out a structured review of studies that dealt with types of implant abutment connections, the concept of platform switching and its influence on hard and soft oral tissues. Electronic search was conducted over PubMed, Google Scholar, Medline, Embase to find articles dealing with Implant abutment connection and platform switching. We came across a total of 248 articles, which were filtered to a cumulative 19 articles after cross matching with predetermined inclusion and exclusion criteria. Most of the available literature gravitates in favor of an internal connection with the incorporation of platform switching to attain satisfactory hard and soft tissue outcomes.
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Affiliation(s)
| | - Vinay Sivaswamy
- Department of Prosthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, India
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Shah KK, Sivaswamy V. Assessment of Knowledge on Implant Abutment and Platform Switching among Dental Specialists Practicing Implantology. J Long Term Eff Med Implants 2022; 33:31-37. [PMID: 36382702 DOI: 10.1615/jlongtermeffmedimplants.2022042721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Implant abutment connection has proven to have a significant impact on the success of the prosthetic rehabilitation for an implant-supported restoration. This connection not only provides the base on which the restoration is supported but also maintains the integrity of the hard and the soft tissues surrounding the implant. A wide range of implants and their implant abutments are now widely available in the market. Such a wide range would undoubtedly put the clinician in a quandary when it comes to selecting an acceptable abutment, one that is scientifically based and also has a high clinical rate of success. As a result, this study is a straightforward attempt to assess the knowledge of the dental specialists practicing implantology on the areas of implant abutment connections as well as platform switching. The aim of this study was to assess the knowledge on various implant abutment and platform switching among various dental specialists practicing implantology. An online multiple-choice questionnaire based survey was circulated amongst a total of 100 dental specialists with questions assessing their knowledge about implant-abutment connections, platform switching and its significance. Although the degree of information about implant-abutment connection and platform switching appears to be appropriate among various dental specialists practicing implantology, there is a dearth of understanding regarding the mechanical, biological and technical considerations. With the advent of various implant manufacturer and their production of implants as well as their components, the clinicians are undoubtedly put in a quandary when it comes to selecting an acceptable abutment, one that is scientifically based and also has a high clinical rate of success. Therefore, more light must be thrown not only on the surgical aspects of implant dentistry, but also on the prosthetic rehabilitation and its components, in order to ensure clinical success in terms of restoring a patient's function as well as aesthetic.
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Affiliation(s)
- Khushali K Shah
- Department of Prosthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Vinay Sivaswamy
- Department of Prosthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, India
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Yu H, Qiu L. Analysis of fractured dental implant body from five different implant systems: a long-term retrospective study. Int J Oral Maxillofac Surg 2022; 51:1355-1361. [PMID: 35562314 DOI: 10.1016/j.ijom.2022.04.010] [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: 05/30/2021] [Revised: 04/16/2022] [Accepted: 04/21/2022] [Indexed: 10/18/2022]
Abstract
The aim of this study was to perform an analysis of the incidence of implant body fracture and to identify possible risk factors. A long-term follow-up retrospective evaluation of 3477 patients who received 8588 implants from five implant systems was performed. Overall, 2810 patients who received 7502 implants, with an average follow-up of 6.9 years, were included in the analysis. The overall body fracture rate was 0.49% (37/7502), among which 32.4% (12/37) were implants with a reduced diameter. The estimated cumulative fracture rate was 1.24%. Fractures were observed in two patients with three Brånemark implants, 13 patients with 15 Nobel Replace implants, eight patients with eight Camlog implants, eight patients with 11 Ankylos implants, and none of the patients with Thommen implants. Most fractures occurred in the molar region (29/37) and in single implant-supported restorations (30/37). The results showed significant differences between splinted and unsplinted restorations (P = 0.005) and between regular and narrow diameter implants (P = 0.009). Within the limitations of this retrospective analysis, a narrow implant diameter is a potential risk factor for implant body fracture in the posterior region. Furthermore, unsplinted restorations appear to be associated with a higher rate of implant fracture.
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Affiliation(s)
- H Yu
- Fourth Division Department, Peking University School and Hospital of Stomatology, Chaoyang District, Beijing, China.
| | - L Qiu
- Fourth Division Department, Peking University School and Hospital of Stomatology, Chaoyang District, Beijing, China.
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5
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Li QL, Yao MF, Cao RY, Zhao K, Wang XD. Survival Rates of Splinted and Nonsplinted Prostheses Supported by Short Dental Implants (≤8.5 mm): A Systematic Review and Meta-Analysis. J Prosthodont 2021; 31:9-21. [PMID: 34160869 DOI: 10.1111/jopr.13402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2021] [Indexed: 12/15/2022] Open
Abstract
PURPOSE To evaluate and compare the implant survival rates, marginal bone loss, and mechanical complications of prostheses supported by splinted and nonsplinted short implants (≤8.5 mm). MATERIAL AND METHODS Electronic database (MEDLINE, CENTRAL, Web of Science, and EMBASE) and manual searches up to May 2021 were conducted to identify studies comparing splinted and nonsplinted short implants (≤8.5 mm). The primary outcome was implant survival rate. Secondary outcomes were marginal bone loss and mechanical complications. The quality of included studies and risk-of-bias were assessed according to the Newcastle-Ottawa Scale. A random-effects model was used to analyze the data. RESULTS Twelve studies fulfilled the inclusion criteria and featured 1506 short implants (596 nonsplinted and 910 splinted) with a follow-up time ranging from 1 to 16 years. Quantitative analysis found no statistically significant differences between splinted and nonsplinted short implants (≤8.5 mm) for survival rate (RR = 0.98; 95% CI 0.96, 1.01; p = 0.26)) and marginal bone loss (SMD = -0.08; 95% CI - 0.23, 0.07; p = 0.28). Veneer chipping, abutment screw breakage, screw loosening, and loss of retention were reported in the selected studies as common complications. However, no statistically significant difference was found between splinted and nonsplinted short implants (RR = 0.56; 95% CI 0.20, 1.54; p = 0.26). CONCLUSIONS Within the limitations of the present meta-analysis, it might be concluded that splinted short implants (≤8.5 mm) do not present superior performance in survival rate, marginal bone maintenance and prevention of mechanical complications compared with single-unit prostheses.
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Affiliation(s)
- Qiu-Lan Li
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China
| | - Mian-Feng Yao
- Xiangya Hospital Central South University, Department of Stomatology, Changsha, Hunan, China
| | - Ruo-Yan Cao
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China
| | - Ke Zhao
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China
| | - Xiao-Dong Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China
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Abstract
PURPOSE The concept of biological width has been proposed and widely used in oral implantation. This review aimed to summarize the biological width around implant in detail. STUDY SELECTION An electronic search of the literature prior to March 2019 was performed to identify all articles related to biological width in periimplant soft tissue. The search was conducted in the MEDLINE (National Library of Medicine) database accessed through PubMed with no date restriction. The following main keywords were used: "implant", "biological width", "soft tissue", "junctional epithelium", "peri-implant epithelium", "connective tissue", "gingiva", "mucosa" (connecting multiple keywords with AND, OR). RESULTS The identified researches focused on several aspects related to biological width in oral implantation, namely the concept, formation, remodeling, dimension, structure and function. CONCLUSIONS Based on of the reviewed literature, the concept, formation, remodeling, structure, dimension, and functional significances of periimplant biological width are explored in this narrative review. The formation of biological width around implant is a complex process after several weeks of healing. The biological width around implant is a 3-4mm distance from the top of the peri-implant mucosa to the first bone-to-implant contact or the stabilized top of the adjacent bone, consisting of sulcular epithelium, junctional epithelium and fibrous connective tissue between the epithelium and the first bone-to-implant contact or the stabilized top of the adjacent bone. The biological width forms a biological barrier against the bacteria, influences the remodeling of soft and hard tissue around implant and has implications for clinical aspects of dental implantation.
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Affiliation(s)
- Zheng Zheng
- Graduate Prosthodontics, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital
| | - Xiaogang Ao
- Graduate Prosthodontics, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital
| | - Peng Xie
- Graduate Prosthodontics, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital
| | - Fan Jiang
- Department of Stomatology, the Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - Wenchuan Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Chengdu, China and Department of Oral Prosthodontics
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7
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Radaelli MTB, Federizzi L, Nascimento GG, Leite FRM, Boscato N. Early‐predictors of marginal bone loss around morse taper connection implants loaded with single crowns: A prospective longitudinal study. J Periodontal Res 2020; 55:174-181. [DOI: 10.1111/jre.12699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 08/13/2019] [Accepted: 09/01/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Manuel T. B. Radaelli
- Department of Prosthodontics Meridional Center of Dentistry Studies Passo Fundo Brazil
| | - Leonardo Federizzi
- Department of Prosthodontics Meridional Center of Dentistry Studies Passo Fundo Brazil
| | - Gustavo G. Nascimento
- Section of Periodontology Department of Dentistry and Oral Health Aarhus University Aarhus Denmark
| | - Fábio R. M. Leite
- Section of Periodontology Department of Dentistry and Oral Health Aarhus University Aarhus Denmark
| | - Noéli Boscato
- Graduate Program in Dentistry School of Dentistry Federal University of Pelotas Pelotas Brazil
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8
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Pellicer-Chover H, Díaz-Sanchez M, Soto-Peñaloza D, Peñarrocha-Diago MA, Canullo L, Peñarrocha-Oltra D. Impact of crestal and subcrestal implant placement upon changes in marginal peri-implant bone level. A systematic review. Med Oral Patol Oral Cir Bucal 2019; 24:e673-e683. [PMID: 31433391 PMCID: PMC6764703 DOI: 10.4317/medoral.23006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 05/27/2019] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND To systematically assess studies analyzing peri-implant bone loss in implants placed in crestal and subcrestal position. MATERIAL AND METHODS Following the recommended methods for systematic reviews and meta-analyses (PRISMA), an electronic search was conducted in the PubMed (MEDLINE), EMBASE and LILACS databases to identify all relevant articles published up until April 2017. The search included human studies comparing marginal bone loss (MBL) between a control group and a study group with a minimum of 10 patients and a minimum follow-up of 6 months after prosthetic loading with rough neck implants. Two independent reviewers assessed the risk of bias in the selected studies based on the Newcastle-Ottawa scale for observational studies and the Cochrane Collaboration for clinical trials. RESULTS Of 342 potentially eligible items, 7 complied with the inclusion criteria. One article was retrieved through the manual search. Eight articles were finally included: five experimental and three observational studies. The risk of bias assessed by the Cochrane Collaboration and Newcastle-Ottawa showed a high risk of bias. The mean follow-up period was 21 months (range 6-36 months). In four studies, implants placed in a crestal position presented higher MBL than subcrestal implants - the differences being significant in one study, while in three studies, implants placed in a subcrestal position presented greater MBL than crestal implants, with significant differences in only one study. CONCLUSION Despite its limitations, the present systematic review did not find better outcomes between crestal and subcrestal implant placement, however, new studies will be needed, involving improved designs and the standardization of protocols to allow statistical comparisons and the drawing of firm conclusions.
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Affiliation(s)
- H Pellicer-Chover
- Universidad de Valencia, Clínica Odontológica, Unidad de Cirugía Bucal, Gascó Oliag 1, 46021 - Valencia, (Spain),
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9
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Doornewaard R, Jacquet W, Cosyn J, De Bruyn H. How do peri-implant biologic parameters correspond with implant survival and peri-implantitis? A critical review. Clin Oral Implants Res 2019; 29 Suppl 18:100-123. [PMID: 30306697 PMCID: PMC6220966 DOI: 10.1111/clr.13264] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/02/2018] [Accepted: 04/11/2018] [Indexed: 02/06/2023]
Abstract
Objectives The aim of this critical review was to evaluate whether commonly used biologic diagnostic parameters correspond to implant survival and peri‐implantitis prevalence. Materials and methods Publications from 2011 to 2017 were selected by an electronic search using the Pubmed database of the US National Library of Medicine. Prospective and retrospective studies with a mean follow‐up time of at least 5 years and reporting prevalence of peri‐implantitis as well as mean bone loss and standard deviation were selected. The correlation between reported prevalence of peri‐implantitis and reported implant survival, mean follow‐up time, mean bone loss, mean probing depth, and mean bleeding on probing was calculated. Mean bone loss and standard deviation were used for estimation of proportion of implants with bone loss exceeding 1, 2, and 3 mm. Results Full‐text analysis was performed for 255 papers from 4,173 available ones, and 41 met all the inclusion criteria. The overall mean weighted survival rate was 96.9% (89.9%–100%) and the reported prevalence of peri‐implantitis ranged between 0% and 39.7%, based on 15 different case definitions. The overall weighted bone loss was 1.1 mm based on 8,182 implants and an average mean loading time ranging from 5 to 20 years. No correlation was found between mean bone loss and the reported prevalence of peri‐implantitis. The estimated prevalence of implants with bone loss above 2 mm was 23%. The overall weighted mean probing depth was 3.3 mm, and mean weighted bleeding was 52.2%. Only a weak correlation was found between survival and function time (r = −0.49). There was no relation between the probing depth or bleeding and the mean bone loss, mean follow‐up time, and reported prevalence of peri‐implantitis. Conclusion Biologic parameters mean probing depth and mean bleeding on probing do not correlate with mean bone loss and this irrespective of follow‐up. Case definition for peri‐implantitis varied significantly between studies indicating that an unambiguous definition based on a specified threshold for bone loss is not agreed upon in the literature.
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Affiliation(s)
- Ron Doornewaard
- Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium, Ghent, Belgium
| | - Wolfgang Jacquet
- Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium, Ghent, Belgium.,Oral Health Research Group ORHE, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Educational Sciences EDWE-LOCI, Faculty of Psychology and Educational Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Jan Cosyn
- Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium, Ghent, Belgium.,Oral Health Research Group ORHE, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Hugo De Bruyn
- Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium, Ghent, Belgium.,Section Implantology & Periodontology, Department of Dentistry, Radboudumc, Nijmegen, The Netherlands
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Peñarrocha-Oltra D, Palau I, Cabanes G, Tarazona B, Peñarrocha-Diago M. Comparison of digital protocols for the measurement of peri-implant marginal bone loss. J Clin Exp Dent 2018; 10:e1216-e1222. [PMID: 30697381 PMCID: PMC6343979 DOI: 10.4317/jced.55396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 11/22/2018] [Indexed: 11/05/2022] Open
Abstract
Background The measurement of peri-implant marginal bone loss is currently carried out using digital methods of radiographic analysis assisted by various types of software. The purpose of this study was to compare the characteristics of three different softwares: specific radiology software for the development and visualization of radiological images in DICOM format (3Dicom Viewer®), advanced level software for professional editing of bitmap images (or raster graphics) (Adobe Photoshop®), and mid-level software for processing bitmap-type images, programmed in Java and in the public domain (ImageJ®). Material and Methods It was verified that the three softwares used are valid for the measurement of peri-implant marginal bone loss provided that the appropriate protocol is fulfilled. Results The results showed no significant differences between Adobe Photoshop® and ImageJ® with respect to 3Dicom Viewer® in the measurements of mesial and distal bone loss of the implants, without influence of the dental sector where they were located. Conclusions The measurements made with ImageJ® looked more like those of the control software (3Dicom Viewer®) than those of Adobe Photoshop®, but with a greater degree of dispersion. Thus, Adobe Photoshop® is a slightly inaccurate method but with less dispersion. Key words:Digital measurement, measurement software, peri-implant marginal bone loss, implants.
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Affiliation(s)
- David Peñarrocha-Oltra
- DDS, PhD. Assistant Professor of Oral Surgery and Implantology. University of Valencia Medical and Dental School
| | - Ivan Palau
- DDS. University of Valencia Medical and Dental School
| | - Guillermo Cabanes
- Collaborating Professor of Oral Surgery. University of Valencia Medical and Dental School. Valencia, Spain
| | - Beatriz Tarazona
- DDS, PhD. Assistant Professor of Orthodontics. University of Valencia Medical and Dental School
| | - Maria Peñarrocha-Diago
- Full Professor of Oral Surgery. Professor of the Master in Oral Surgery and Implantology. University of Valencia Medical and Dental School. Valencia, Spain
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11
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Cassetta M, Di Giorgio R, Barbato E. Are intraoral radiographs reliable in determining peri-implant marginal bone level changes? The correlation between open surgical measurements and peri-apical radiographs. Int J Oral Maxillofac Surg 2018; 47:1358-1364. [PMID: 29866412 DOI: 10.1016/j.ijom.2018.05.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 04/20/2018] [Accepted: 05/23/2018] [Indexed: 11/17/2022]
Abstract
This study was performed to evaluate the reliability of peri-apical radiographs in determining peri-implant marginal bone level changes. The STROBE guidelines were followed. Marginal bone levels were measured at the time of implant insertion using a straight periodontal probe and using peri-apical radiographs. These intraoperative and radiographic measurements were repeated at the time of second surgery. All radiographs were analysed by two examiners blinded to the intraoperative measurements. To standardize the radiographic images, the long-cone parallel technique and a film-holding system were used. Intra-observer agreement and inter-observer variability were assessed using the intra-class correlation coefficient (ICC). Descriptive statistics, the t-test, and the Pearson correlation coefficient were also used. A total of 268 implants were inserted in 142 patients. Inter-observer agreement was 0.950; intra-observer variability was 0.980 and 0.973. The mean difference between the radiographic and intraoperative measurements was 0.50±1.55mm (range 0-8mm); the difference was statistically significant (P=0.000). A significant linear correlation was found between the marginal bone level changes evaluated intraoperatively and radiographically (P<0.005). Radiographic analysis significantly overestimated the level of peri-implant marginal bone compared to intraoperative measurements, but peri-apical radiographs are reliable in determining the bone level changes at different follow-ups.
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Affiliation(s)
- M Cassetta
- Department of Oral and Maxillofacial Sciences, School of Dentistry, "Sapienza" University of Rome, Rome, Italy.
| | - R Di Giorgio
- Department of Oral and Maxillofacial Sciences, School of Dentistry, "Sapienza" University of Rome, Rome, Italy
| | - E Barbato
- Department of Oral and Maxillofacial Sciences, School of Dentistry, "Sapienza" University of Rome, Rome, Italy
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12
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Huang B, Zhang L, Xu L, Zhu W, Witek L, Tovar N, Coelho PG, Meng H. Effect of implant placement depth on the peri-implant bone defect configurations in ligature-induced peri-implantitis: An experimental study in dogs. Med Oral Patol Oral Cir Bucal 2018; 23:e30-e37. [PMID: 29274159 PMCID: PMC5822536 DOI: 10.4317/medoral.22032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Indexed: 11/24/2022] Open
Abstract
Background The subcrestal placement of implant platform has been considered a key factor in the preservation of crestal bone, but the influence of implant placement depth on bone remodeling combined with peri-implantitis is not fully understood. The aim of this study was to assess the effect of the crestal or subcrestal placement of implants on peri-implant bone defects of ligature-induced peri-implantitis in dogs. Material and Methods Eight weeks after tooth extraction in six beagle dogs, two different types of implants (A: OsseoSpeed™, Astra, Mölndal, Sweden; B: Integra-CP™, Bicon, Boston, USA) were placed at either crestal or subcrestal (-1.5 mm) positions on one side of the mandible. Ligature-induced peri-implantitis was initiated four weeks after the installation of the healing abutment connections. After 12 weeks, tissue biopsies were processed for histological analyses. Results Supra-alveolar bone loss combined with a shallow infrabony defect was observed in crestal level implants while deep and wide infrabony defects were present in subcrestal level groups. Subcrestal groups showed significantly greater ridge loss, depths and widths of infrabony defects when compared to crestal groups (P<0.001). Conclusions Within the limitations of the animal study, it can be stated that the implants at subcrestal position displayed greater infra-osseous defect than implants at crestal position under an experimental ligature-induced peri-implantitis. Key words:Subcrestal, peri-implantitis, histology.
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Affiliation(s)
- B Huang
- Department of Periodontology, Peking University, School and Hospital of Stomatology, zhongguancun nandajie No.22, Haidian District, Beijing 100081, China,
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13
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Pieri F, Forlivesi C, Caselli E, Corinaldesi G. Short implants (6 mm) vs. vertical bone augmentation and standard-length implants (≥9 mm) in atrophic posterior mandibles: a 5-year retrospective study. Int J Oral Maxillofac Surg 2017; 46:1607-1614. [DOI: 10.1016/j.ijom.2017.07.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 03/28/2017] [Accepted: 07/07/2017] [Indexed: 11/30/2022]
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