In Vitro Effect of Acidic Challenges on the Physical Properties of Dental Prosthesis Artificial Teeth
Pesqui. bras. odontopediatria clín. integr
; 20: e5365, 2020. tab
Article
ي En
| LILACS, BBO
| ID: biblio-1135499
المكتبة المسؤولة:
BR1264.1
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 andMethods:
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).Key words
النص الكامل:
1
الفهرس:
LILACS
الموضوع الرئيسي:
Tooth, Artificial
/
Acrylic Resins
/
In Vitro Techniques
/
Dental Prosthesis
نوع الدراسة:
Evaluation_studies
البلد/الأقليم حسب الموضوع:
America do sul
/
Brasil
اللغة:
En
مجلة:
Pesqui. bras. odontopediatria clín. integr
موضوع المجلة:
ODONTOLOGIA
السنة:
2020
نوع:
Article