Comparative study of torque resistance and microgaps between a combined Octatorx-cone connection and an internal hexagon implant-abutment connection

© 2015 Editorial Council for the Journal of Prosthetic Dentistry. Statement of problem Although the implant-abutment connection may prevent crestal bone loss around dental implants, its failure often leads to treatment failure. Microgap and micromovement of the implant-abutment connection could be c...

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Main Authors: Khongkhunthian P., Khongkhunthian S., Weerawatprachya W., Pongpat K., Aunmeungtong W.
Format: Article
Published: Mosby Inc. 2015
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Online Access:http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84929513292&origin=inward
http://cmuir.cmu.ac.th/handle/6653943832/38020
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-380202015-06-16T03:59:37Z Comparative study of torque resistance and microgaps between a combined Octatorx-cone connection and an internal hexagon implant-abutment connection Khongkhunthian P. Khongkhunthian S. Weerawatprachya W. Pongpat K. Aunmeungtong W. Oral Surgery © 2015 Editorial Council for the Journal of Prosthetic Dentistry. Statement of problem Although the implant-abutment connection may prevent crestal bone loss around dental implants, its failure often leads to treatment failure. Microgap and micromovement of the implant-abutment connection could be causes of bone resorption around dental implant neck. Purpose The purpose of this study was to compare torque resistance and microgaps between a new cone and index connection (Octatorx) and an internal hexagon implant-abutment connection (Internal hex). Material and methods Twenty Octatorx and 20 internal hexagon connections were attached with retaining screws at 30 Ncm. In a torsion resistance test, 10 of each type of connection were attached to a universal testing machine. Torque resistance with 90 degrees per minute rotation speed was recorded. For microgap measurement, each of 10 connections was embedded in clear acrylic resin. The blocks were cut longitudinally. Twenty specimens of each connection were evaluated. Twelve measurements of microgaps (6 on each side of specimen) were recorded under scanning electron microscopy. Results The average torsion resistance of Octatorx (203.6 ±17.4 Ncm) was significantly greater than that of the internal hexagon (146.4 ±16.1 Ncm, P<.05). For the microgap, there was a significant difference (P=.001) between the median values of Octatorx (1.19 μm) and the internal hexagon (3.80 μm). Conclusions In this study, the new connection, Octatorx, had a smaller microgap and greater torque resistance than the internal hexagon connection. 2015-06-16T03:59:37Z 2015-06-16T03:59:37Z 2015-01-01 Article 00223913 2-s2.0-84929513292 10.1016/j.prosdent.2014.12.006 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84929513292&origin=inward http://cmuir.cmu.ac.th/handle/6653943832/38020 Mosby Inc.
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Oral Surgery
spellingShingle Oral Surgery
Khongkhunthian P.
Khongkhunthian S.
Weerawatprachya W.
Pongpat K.
Aunmeungtong W.
Comparative study of torque resistance and microgaps between a combined Octatorx-cone connection and an internal hexagon implant-abutment connection
description © 2015 Editorial Council for the Journal of Prosthetic Dentistry. Statement of problem Although the implant-abutment connection may prevent crestal bone loss around dental implants, its failure often leads to treatment failure. Microgap and micromovement of the implant-abutment connection could be causes of bone resorption around dental implant neck. Purpose The purpose of this study was to compare torque resistance and microgaps between a new cone and index connection (Octatorx) and an internal hexagon implant-abutment connection (Internal hex). Material and methods Twenty Octatorx and 20 internal hexagon connections were attached with retaining screws at 30 Ncm. In a torsion resistance test, 10 of each type of connection were attached to a universal testing machine. Torque resistance with 90 degrees per minute rotation speed was recorded. For microgap measurement, each of 10 connections was embedded in clear acrylic resin. The blocks were cut longitudinally. Twenty specimens of each connection were evaluated. Twelve measurements of microgaps (6 on each side of specimen) were recorded under scanning electron microscopy. Results The average torsion resistance of Octatorx (203.6 ±17.4 Ncm) was significantly greater than that of the internal hexagon (146.4 ±16.1 Ncm, P<.05). For the microgap, there was a significant difference (P=.001) between the median values of Octatorx (1.19 μm) and the internal hexagon (3.80 μm). Conclusions In this study, the new connection, Octatorx, had a smaller microgap and greater torque resistance than the internal hexagon connection.
format Article
author Khongkhunthian P.
Khongkhunthian S.
Weerawatprachya W.
Pongpat K.
Aunmeungtong W.
author_facet Khongkhunthian P.
Khongkhunthian S.
Weerawatprachya W.
Pongpat K.
Aunmeungtong W.
author_sort Khongkhunthian P.
title Comparative study of torque resistance and microgaps between a combined Octatorx-cone connection and an internal hexagon implant-abutment connection
title_short Comparative study of torque resistance and microgaps between a combined Octatorx-cone connection and an internal hexagon implant-abutment connection
title_full Comparative study of torque resistance and microgaps between a combined Octatorx-cone connection and an internal hexagon implant-abutment connection
title_fullStr Comparative study of torque resistance and microgaps between a combined Octatorx-cone connection and an internal hexagon implant-abutment connection
title_full_unstemmed Comparative study of torque resistance and microgaps between a combined Octatorx-cone connection and an internal hexagon implant-abutment connection
title_sort comparative study of torque resistance and microgaps between a combined octatorx-cone connection and an internal hexagon implant-abutment connection
publisher Mosby Inc.
publishDate 2015
url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84929513292&origin=inward
http://cmuir.cmu.ac.th/handle/6653943832/38020
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