FACTORS AFFECTING THE ABUTMENT SCREW LOOSENING

Aim of the study: To establish the influence of various factors upon the loosening of abutment screw. Material and Methods: The current study has analyzed the factors leading to loosening of the abutment screws implant-supported restorations. 116 patients have been examined with 234 setting implan...

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Main Authors: Dimitar Kirov, Biser Stoichkov
Format: Article
Language:English
Published: Peytchinski Publishing 2017-03-01
Series:Journal of IMAB
Subjects:
Online Access:https://www.journal-imab-bg.org/issues-2017/issue1/JofIMAB-2017-23-1p1505-1509.pdf
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author Dimitar Kirov
Biser Stoichkov
author_facet Dimitar Kirov
Biser Stoichkov
author_sort Dimitar Kirov
collection DOAJ
description Aim of the study: To establish the influence of various factors upon the loosening of abutment screw. Material and Methods: The current study has analyzed the factors leading to loosening of the abutment screws implant-supported restorations. 116 patients have been examined with 234 setting implants for a period of 2 to 9 years. Factors related to the planning of implant prostheses such as area of implantation, available bone volume have been registered, as well as those related to the functional loading of dental implants. The impact of their effect has been calculated. Results: Abutment screw loosening has been registered in 6.8% of the monitored cases. Regarding the type of connection between the implant and abutment a higher prevalence has been reported in connection with an internal octagon - 4.7% compared to the conical connection - 2.1%. It was found that the type of prosthesis, bruxism, cantilevers, non-balanced occlusion, crestal bone resorption and time of this complication setting in are factors of statistically significant influence. Conclusion: It has been concluded that the optimal choice and number of implant positions, the design of prosthesis, achieving optimal occlusion as well as reporting cases of bruxism, leading to functional overload of dental implants are of particular importance in order to avoid bio-mechanical long-term complications.
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spelling doaj.art-963aae45359a4d0da780f22ab06845d82022-12-22T01:28:10ZengPeytchinski PublishingJournal of IMAB1312-773X2017-03-012311505150910.5272/jimab.2017231.1505FACTORS AFFECTING THE ABUTMENT SCREW LOOSENINGDimitar Kirov0Biser Stoichkov1Department of Prosthetic Dentistry, Faculty of Dental Medicine, Medical University, Sofia, Bulgaria.Department of Oral and Maxillo-Facial Surgery, Faculty of Dental Medicine, Medical University - Sofia, Bulgaria.Aim of the study: To establish the influence of various factors upon the loosening of abutment screw. Material and Methods: The current study has analyzed the factors leading to loosening of the abutment screws implant-supported restorations. 116 patients have been examined with 234 setting implants for a period of 2 to 9 years. Factors related to the planning of implant prostheses such as area of implantation, available bone volume have been registered, as well as those related to the functional loading of dental implants. The impact of their effect has been calculated. Results: Abutment screw loosening has been registered in 6.8% of the monitored cases. Regarding the type of connection between the implant and abutment a higher prevalence has been reported in connection with an internal octagon - 4.7% compared to the conical connection - 2.1%. It was found that the type of prosthesis, bruxism, cantilevers, non-balanced occlusion, crestal bone resorption and time of this complication setting in are factors of statistically significant influence. Conclusion: It has been concluded that the optimal choice and number of implant positions, the design of prosthesis, achieving optimal occlusion as well as reporting cases of bruxism, leading to functional overload of dental implants are of particular importance in order to avoid bio-mechanical long-term complications.https://www.journal-imab-bg.org/issues-2017/issue1/JofIMAB-2017-23-1p1505-1509.pdfabutment screw looseningimplant complicationsocclusal loadbruxismbone resorption
spellingShingle Dimitar Kirov
Biser Stoichkov
FACTORS AFFECTING THE ABUTMENT SCREW LOOSENING
Journal of IMAB
abutment screw loosening
implant complications
occlusal load
bruxism
bone resorption
title FACTORS AFFECTING THE ABUTMENT SCREW LOOSENING
title_full FACTORS AFFECTING THE ABUTMENT SCREW LOOSENING
title_fullStr FACTORS AFFECTING THE ABUTMENT SCREW LOOSENING
title_full_unstemmed FACTORS AFFECTING THE ABUTMENT SCREW LOOSENING
title_short FACTORS AFFECTING THE ABUTMENT SCREW LOOSENING
title_sort factors affecting the abutment screw loosening
topic abutment screw loosening
implant complications
occlusal load
bruxism
bone resorption
url https://www.journal-imab-bg.org/issues-2017/issue1/JofIMAB-2017-23-1p1505-1509.pdf
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