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In Vitro Effect of Acidic Challenges on the Physical Properties of Dental Prosthesis Artificial Teeth
Gondim, Laísa Daniel; Magalhães, Taís Chaves; Lopes, Alana Gail; Aguiar, Marjorie Izabella Batista; Carlo, Hugo Lemes; Barbosa, Tais de Souza; Carvalho, Fabíola Galbiatti de.
  • Gondim, Laísa Daniel; Federal University of Paraíba. Department of Operative Dentistry. João Pessoa. BR
  • Magalhães, Taís Chaves; Federal University of Juiz de Fora. Department of Dentistry. Governador Valadares. BR
  • Lopes, Alana Gail; Federal University of Juiz de Fora. Department of Dentistry. Governador Valadares. BR
  • Aguiar, Marjorie Izabella Batista; Federal University of Juiz de Fora. Department of Dentistry. Governador Valadares. BR
  • Carlo, Hugo Lemes; Federal University of Juiz de Fora. Department of Dentistry. Governador Valadares. BR
  • Barbosa, Tais de Souza; Federal University of Juiz de Fora. Department of Dentistry. Governador Valadares. BR
  • Carvalho, Fabíola Galbiatti de; Federal University of Juiz de Fora. Department of Dentistry. Governador Valadares. BR
Article in English | LILACS, BBO | ID: biblio-1135499
ABSTRACT
Abstract

Objective:

To evaluate the effect of immersion and acid challenge with cola drink on color change (ΔE), Vickers hardness (VHN) and surface roughness (Ra) of artificial acrylic resin teeth. Material and

Methods:

The artificial teeth were divided into 6 groups (n= 8) TC (Trilux/Control), BC (Biotone/Control), TAC (Trilux/Acid challenge), BAC (Biotone/Acid challenge), TI (Trilux/Immersion) and BI (Biotone/Immersion). The teeth were embedded in acrylic resin and the labial side was serially polished to provide appropriate flat surface. The samples of TC, BC, TI, BI groups were immersed in artificial saliva and cola drink (coke) for 7 days, respectively. The acid challenge was performed with immersion of samples in coke for 5 min, and subsequently immersion in artificial saliva for 2h. This cycle was repeated at 4 times/day, during 7 days. The tests of VHN, ΔE and Ra were analyzed before and after the challenge and immersion groups. Data was analyzed by ANOVA, Tukey and T test (α = 0.05).

Results:

There was no difference in Ra values between groups after treatments. However, there was a decrease in VHN for all groups. BI (19.2 ± 0.3) presented significantly lower hardness than BAC (19.5 ± 0.9) and BC (20.2 ± 0.5). Groups BI (2.18 ± 0.41) and TI (1.50 ± 0.43) had statistically higher ΔE compared to the other groups.

Conclusion:

The hardness of resin teeth decreased after acid challenges, but the roughness surface was not affected. The color was more affected by the times of exposure in cola beverage and remineralization in artificial saliva, which were associated to the material degradation (AU).
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Tooth, Artificial / Acrylic Resins / In Vitro Techniques / Dental Prosthesis Type of study: Evaluation studies Country/Region as subject: South America / Brazil Language: English Journal: Pesqui. bras. odontopediatria clín. integr Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Juiz de Fora/BR / Federal University of Paraíba/BR

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Full text: Available Index: LILACS (Americas) Main subject: Tooth, Artificial / Acrylic Resins / In Vitro Techniques / Dental Prosthesis Type of study: Evaluation studies Country/Region as subject: South America / Brazil Language: English Journal: Pesqui. bras. odontopediatria clín. integr Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Juiz de Fora/BR / Federal University of Paraíba/BR