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

The Journal of Prosthetic Dentistry
Pathawee KhongkhunthianWeerapan Aunmeungtong

Abstract

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. 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). 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. 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 med...Continue Reading

References

Jun 1, 1996·Clinical Oral Implants Research·L G PerssonJ Lindhe
Apr 2, 2002·Journal of Periodontology·Tae-Ju OhHom-Lay Wang
Feb 3, 2004·Implant Dentistry·Jennifer T SteigengaHom-Lay Wang
Jun 16, 2006·Clinical Implant Dentistry and Related Research·Torsten Jemt, Jesper Johansson
Mar 4, 2008·Dental Materials Journal·Takuma TsugeHideo Matsumura
Aug 18, 2009·Clinical Implant Dentistry and Related Research·Lars Laurell, Dan Lundgren
Jul 20, 2010·Clinical Oral Implants Research·Pierre SimonisHenri Tenenbaum
Aug 28, 2012·Dental Materials : Official Publication of the Academy of Dental Materials·Yasufumi YamanishiHirofumi Yatani

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Citations

Nov 25, 2016·The Journal of Prosthetic Dentistry·Thalisson Saymo de Oliveira SilvaCarmem Dolores Vilarinho Soares de Moura
Jan 15, 2019·International Journal of Implant Dentistry·Kanyarin BenjaboonyazitPathawee Khongkhunthian

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