Influence of storage period and effect of different brands of acrylic resin on the dimensional accuracy of the maxillary denture base

Autor: Marcelo Coelho Goiato, Stefan Fiuza de Carvalho Dekon, Ana Carolina Miessi, Daniela Micheline dos Santos, Ricardo Coelho Okida
Přispěvatelé: Universidade Estadual Paulista (Unesp)
Rok vydání: 2008
Předmět:
Hot Temperature
Time Factors
Polymers
denture
Acrylic Resins
Dentistry
Materials Testing
biomedical and dental materials
Composite material
Microwaves
Acrylic resin
comparative study
time
chemistry.chemical_classification
Dental Casting Technique
denture base
Temperature
Polymer
Dental care
Models
Dental
vipi cril
dimensional change
visual_art
visual_art.visual_art_medium
Denture base
Dental Models
Denture Bases
Materials science
surface property
Surface Properties
polymer
water
chemistry
Dental Materials
Humans
onda cryl
human
tooth brushing
Denture Design
General Dentistry
wax
business.industry
post-pressing time
Significant difference
technology
industry
and agriculture
Denture
Complete
Upper
Water
Dental Polishing
packing methods
microwave radiation
Polymerization
acrylic acid resin
Waxes
Water chemistry
dental care
heat
business
QC 20 (denture base resin)
vipi wave
Zdroj: Brazilian Dental Journal, Volume: 19, Issue: 3, Pages: 204-208, Published: 2008
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Brazilian Dental Journal v.19 n.3 2008
Brazilian Dental Journal
Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron:FUNORP
ISSN: 1806-4760
Popis: The aim of this study was to evaluate the dimensional changes of denture bases made from different resins after different storage periods. For this purpose, 25 sets of plaster models/resin bases were prepared using 4 acrylic resins submitted to two types of polymerization: 1- QC-20 submitted to polymerization by microwave energy; 2- QC-20 submitted to polymerization by water hot bath; 3- Vipi Cril submitted to polymerization by water hot bath; 4- Vipi Wave submitted to polymerization by microwave energy; and 5- Onda Cryl submitted to polymerization by microwave energy. After polymerization, the specimens were sectioned for accuracy readings using a comparison microscope. Readings were taken at 3 points: the crests of the right (A) and left (B) ridges, and the median region of the palate, in 4 different periods. The data obtained were submitted to two-way ANOVA and Tukey's test at 5% significance level. The greatest distortions were found in the posterior palatal region of the base (M), with statistically significant difference (p
Databáze: OpenAIRE
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