The Influence of Thermal Curing Cycles on the Color Stability of Unfilled Polymethyl Methacrylate Teeth

Purpose: The purpose of this study was to evaluate the influence of water bath polymerization cycles on the color stability of unfilled polymethyl methacrylate (PMMA) teeth. Materials and methods: A total of 72 samples of unfilled PMMA were divided into two groups. Group 1 was subjected to a short c...

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Detalles Bibliográficos
Autores principales: Basany, Ram, Bandela, Vinod, Nandalur, Kulashekar Reddy, Vinnekota, Dileep Nag, Metta, Kiran Kumar, Mempally, Hari Kumar, Kanaparthi, Saraswathi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cureus 2022
Materias:
Dentistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9012568/
https://www.ncbi.nlm.nih.gov/pubmed/35449636
http://dx.doi.org/10.7759/cureus.23265
Descripción
Sumario:Purpose: The purpose of this study was to evaluate the influence of water bath polymerization cycles on the color stability of unfilled polymethyl methacrylate (PMMA) teeth. Materials and methods: A total of 72 samples of unfilled PMMA were divided into two groups. Group 1 was subjected to a short curing cycle and group 2 to a long thermal curing cycle. Color measurements were done using a spectrophotometer and evaluated by the Commission Internationale de l’Eclairage (CIE) L*a*b* color system. Color difference (∆E) was calculated before and after thermal curing cycles and the data were statistically analyzed. Results: Group 2 teeth exhibited the highest ΔE values and color change to long curing cycle with significant difference between them. Conclusion: All the ΔE values were below 3.3, indicating that the color changes are not clinically perceptible.

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