European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
September 2013
Print ISSN:
0965-7452
Vol:
21
Issue:
3

The Effect of Numbers and Locations of Retentive Holes Placed on Master Casts on Reducing the Polymerization Distortion of the Maxillary Complete Denture

doi:10.1922/EJPRD_1141Abrandabadi06

Abstract - Polymerization shrinkage is one of the disadvantages of polymethyl methacrylate resulting in distortion of resin denture bases. The aim of this study is to analyze the effect of numbers and locations of retentive holes on reducing polymerization distortion. Forty eight master casts were assigned as: control group (A); one anchoring hole (B); three anchoring holes (C); five anchoring holes (D).The gap distances between the denture bases and casts were measured. The data were analyzed with one-way analysis of variance (ANOVA) followed by the Post-Hoc LSD test. Mechanical anchorage reduced the gap distances in lateral and mid-palate significantly; and this decrease was affected by numbers and locations of anchoring holes significantly.

KEYWORDS: Distortion, Polymerization, Polymethyl methacrylate, Heat-polymerized, Denture base

Article Price
£15.00
Institution Article Price
£
Page Start
135
Page End
140
Authors
M. Golshah, M.S. Monfared, S. Najafi-Abrandabadi

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