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Type: Artigo de periódico
Title: Dimensional Accuracy Of Upper Complete Denture Bases: The Effect Of Metallic Flask Closure Methods.
Author: Consani, Rafael Leonardo Xediek
Mesquita, Marcelo Ferraz
Sobrinho, Lourenço Correr
Sinhoreti, Mário Alexandre Coelho
Abstract: To verify the dimensional accuracy of upper complete denture bases under the effect of different methods of metallic flask closure. Wax record bases were assigned to six groups: 1-2: traditional clamp; 3-4: RS system; and 5-6: flask with screws. Flasks were immediately polymerised or bench stored for 6 h prior to polymerisation. Resin base-cast sets were sectioned at regions corresponding to the canines, first molars and posterior palatal zone. Gap discrepancies were measured at five points: right and left ridge crests, palatal midline, and right and left marginal limits of the flanges. An optical micrometer was used for measurement purposes. Data were submitted to anova, and the means compared by Tukey's test (alpha = 0.05). Results revealed significant differences in the flask closure technique, polymerisation time, section, and their interactions. Discrepancy values for the RS system and flask with screws were significantly lower than those related to the traditional clamp, regardless of whether resin polymerisation was immediate or delayed for 6 h. Flask closure methods should be considered when the denture base stability and comfort of the patient are being assessed during clinical use of the dentures.
Subject: Cuspid
Dental Casting Technique
Dental Materials
Denture Bases
Denture Retention
Denture, Complete, Upper
Materials Testing
Polymethyl Methacrylate
Surface Properties
Time Factors
Citation: Gerodontology. v. 26, n. 1, p. 58-64, 2009-Mar.
Rights: fechado
Identifier DOI: 10.1111/j.1741-2358.2008.00234.x
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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