Testing the retention of attachments for implant overdentures - validation of an original force measurement system

Journal of Oral Rehabilitation
Olivier FromentinR F de Albuquerque Junior

Abstract

The aim of this study was to validate an original portable device to measure attachment retention of implant overdentures both in the lab and in clinical settings. The device was built with a digital force measurement gauge (Imada) secured to a vertical wheel stand associated with a customized support to hold and position the denture in adjustable angulations. Sixteen matrix and patrix cylindrical stud attachments (Locator) were randomly assigned as in vitro test specimens. Attachment abutments were secured in an implant analogue hung to the digital force gauge or to the load cell of a traction machine used as the gold standard (Instron Universal Testing Machine). Matrices were secured in a denture duplicate attached to the customized support, permitting reproducibility of their position on both pulling devices. Attachment retention in the axial direction was evaluated by measuring maximum dislodging force or peak load during five consecutive linear dislodgments of each attachment on both devices. After a wear simulation, retention was measured again at several time periods. The peak load measurements with the customized Imada device were similar to those obtained with the gold standard Instron machine. These findings suggest t...Continue Reading

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Citations

Apr 3, 2012·The Journal of Maternal-fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians·Ramy EskanderMichael G Ross
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Aug 1, 2013·Clinical Implant Dentistry and Related Research·Anja ZembicDaniel Wismeijer
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Aug 30, 2019·Journal of Indian Prosthodontic Society·Khaing Myat ThuShunsuke Minakuchi

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