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De Angelis P, Manicone PF, De Rosa G, De Giorgi A, Liguori MG, Cavalcanti C, D'Addona A, Rella E. Clinical outcomes of conometric retention for implant-supported fixed prostheses: A systematic review and meta-analysis. J Prosthet Dent 2023:S0022-3913(23)00562-0. [PMID: 39492257 DOI: 10.1016/j.prosdent.2023.08.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 11/05/2024]
Abstract
STATEMENT OF PROBLEM Conometric retention was developed as an effective and predictable rehabilitative option. However, the clinical performance of conometric retention is still uncertain. PURPOSE The purpose of this systematic review and meta-analysis was to analyze the clinical outcomes of patients rehabilitated with conometrically retained, implant-supported fixed prostheses. MATERIAL AND METHODS Following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) 2020 guidelines, a systematic review of relevant literature published before September 2022 was conducted in the NIH library, the Cochrane Library, the Web of Science, and MEDLINE, and a manual search was performed. A meta-analysis of the resulting statistical data was carried out. Screening criteria to select the studies to include in the systematic review and meta-analysis were developed. Implant and prosthesis survival rates and probing pocket depth were assessed. RESULTS The 11 studies included in the meta-analysis showed that changes in pocket probing depths were not statistically significant (P=.32). The analysis of the resulting implant and prosthesis survival rates showed a mean survival rate of 99.17% and 98.73%, respectively. CONCLUSIONS From this systematic review and meta-analysis, conometric retention seems to be a predictable therapeutic option associated with high implant and prosthesis survival rates. However, further long-term, and homogenous studies are required to better understand their clinical and long-term limitations.
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Affiliation(s)
- Paolo De Angelis
- Resident, Division of Oral Surgery and Implantology, Department of Head and Neck, Institute of Clinical Dentistry, Oral Surgery and Implantology Unit, A. Gemelli University Hospital Foundation (IRCCS) Catholic University of the Sacred Heart, Rome, Italy
| | - Paolo Francesco Manicone
- Professor, Division of Oral Surgery and Implantology, Department of Head and Neck, Institute of Clinical Dentistry, Oral Surgery and Implantology Unit, A. Gemelli University Hospital Foundation (IRCCS) Catholic University of the Sacred Heart, Rome, Italy
| | - Giuseppe De Rosa
- Resident, Division of Oral Surgery and Implantology, Department of Head and Neck, Institute of Clinical Dentistry, Oral Surgery and Implantology Unit, A. Gemelli University Hospital Foundation (IRCCS) Catholic University of the Sacred Heart, Rome, Italy.
| | - Alessandro De Giorgi
- Researcher, University of Lecce, Department of Mathematics and Physics, Lecce, Italy
| | - Margherita Giorgia Liguori
- Researcher, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Camilla Cavalcanti
- Resident, Division of Oral Surgery and Implantology, Department of Head and Neck, Institute of Clinical Dentistry, Oral Surgery and Implantology Unit, A. Gemelli University Hospital Foundation (IRCCS) Catholic University of the Sacred Heart, Rome, Italy
| | - Antonio D'Addona
- Professor, Division of Oral Surgery and Implantology, Department of Head and Neck, Institute of Clinical Dentistry, Oral Surgery and Implantology Unit, A. Gemelli University Hospital Foundation (IRCCS) Catholic University of the Sacred Heart, Rome, Italy
| | - Edoardo Rella
- Resident, Division of Oral Surgery and Implantology, Department of Head and Neck, Institute of Clinical Dentistry, Oral Surgery and Implantology Unit, A. Gemelli University Hospital Foundation (IRCCS) Catholic University of the Sacred Heart, 00168 Rome, Italy
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The Conometric Connection for the Implant-Supported Fixed Prosthesis: A Narrative Review. PROSTHESIS 2022. [DOI: 10.3390/prosthesis4030037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aim: The conometric concept was proposed as a possible connection between the abutment and the prosthetic coping. This research aimed to review the features and possible clinical uses of this connection in an implant-supported fixed prosthesis. Methods: An electronic search was conducted on an online database for the topic in object; articles published in international literature were considered and the research gave 17 results, and 6 parameters were analyzed. Results: This connection eliminated the possibility of cement residues in the subgingival region, reducing the risk of inflammation of peri-implant soft and hard tissues; not having to remove the cement residues, it is possible to place the margins in more apical portions, improving the aesthetics outcomes of the rehabilitations. It is also known that the retention by means of a screw causes a weakening of the restoration. The retentive force is adequate for fixed rehabilitation even after a high number of insertion–disengagement cycles; in vitro studies have also shown a high bacterial sealing. Implant rehabilitation using preformed components, such as conometric hoods, is helpful for CAD/CAM, so a digital workflow is possible. Several types of prosthesis were presented, all of which demonstrated adequate clinical performance in the follow-up observation. Conclusions: This type of connection seems to be suitable to support fixed implant rehabilitations, but long-term clinical studies are needed to validate this system.
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