Pressure generated on a simulated mandibular oral analog by impression materials in custom trays of different design

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
Adel Al-AhmadElaine Romberg

Abstract

The purpose was to measure the pressure exerted under a simulated mandibular edentulous impression at different locations using commonly used impression materials and four impression tray configurations. This study was performed using an oral analog that simulated an edentulous mandibular arch. Three pressure transducers were embedded in the oral analog-one pressure transducer in the anterior ridge area, and the other two in the right and left buccal shelves. Four configurations of custom trays were fabricated: trays with no relief, with and without holes; and trays with relief, with and without holes. The impression materials tested were light body polysulfide, light body vinyl polysiloxane, medium body vinyl polysiloxane, and irreversible hydrocolloid. The custom tray and the oral analog were mounted using a reline jig, and a Satec universal testing machine was used to apply a constant pressure of 1 kg/cm(2) over a period of 5 minutes on the loaded custom tray. Eighty impressions for the 16 groups (n = 5) were made, and pressures were recorded every 10 seconds. Factorial ANOVA and Tukey Multiple Comparison Test were used to analyze the results (p < 0.05). A significant difference was found in the pressure produced using diffe...Continue Reading

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Citations

Jan 17, 2014·Journal of Indian Prosthodontic Society·Subash M ReddyMahendira Kumar
Mar 13, 2013·Dental Materials : Official Publication of the Academy of Dental Materials·G NishigawaS Minagi
Oct 27, 2009·The Journal of Prosthetic Dentistry·Thitima PhunthikaphadrMansuang Arksornnukit
Mar 31, 2009·The Journal of Prosthetic Dentistry·Kian M TanCarl F Driscoll
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Aug 19, 2015·Journal of Prosthodontic Research·Misao KawaraKaname Hashizaki
Oct 15, 2013·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Mamta MehraRobert W Berg
Sep 16, 2015·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Mohamed MansourCamilo Machado
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Jul 17, 2016·The Journal of Prosthetic Dentistry·Harsimran KaurDheeraj Koli
Feb 16, 2019·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Jae-Ok ShinChan-Jin Park
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Apr 2, 2019·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Seoung-Jin HongKwantae Noh

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