An Invitro Chewing Simulation Study Comparing the Wear Resistance Behavior of Polyetheretherketone-Layered Composite Crown and Ceramic-Layered Zirconia Crown.

Autor:	Rupawat D; Prosthodontics, Saveetha Denal College and Hospitals, Chennai, IND., Nallaswamy D; Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND., Somasundaram J; Prosthodontics, Saveetha Dental College and Hospitals, Chennai, IND., Ganapathy D; Prosthodontics, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND., S N; Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND., Sekaran S; Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha Univerity, Chennai, IND.
Jazyk:	angličtina
Zdroj:	Cureus [Cureus] 2023 Oct 03; Vol. 15 (10), pp. e46439. Date of Electronic Publication: 2023 Oct 03 (Print Publication: 2023).
DOI:	10.7759/cureus.46439
Abstrakt:	Objective: This study aimed to compare the wear resistance and color stability of fixed dental prostheses (FDPs) fabricated using two different materials: zirconia veneered with feldspathic porcelain and polyetheretherketone (PEEK) veneered with indirect composite. The assessment included samples subjected to thermocycling and wear simulation. Methods: Two groups of FDPs were examined: one made of zirconia veneered with feldspathic porcelain (control and thermocycled) and the other made of PEEK veneered with indirect composite (worn and thermocycled). The samples were evaluated for wear resistance, antagonist wear, and color stability. Computer-aided design (CAD) software and a digital spectrophotometer were used for analysis. Results: Zirconia veneered with porcelain demonstrated higher wear resistance compared to PEEK veneered with indirect composite. PEEK veneered with indirect composite exhibited significantly lower antagonist wear, indicating a protective effect on opposing teeth. There was no significant difference in color stability between the two groups, even after subjecting them to thermocycling and wear simulation. Conclusion: The study concludes that FDPs fabricated with PEEK veneered with indirect composite may have lower wear resistance compared to zirconia veneered with porcelain. However, PEEK FDPs appear to be safer for antagonists due to reduced antagonist wear. Importantly, both materials exhibited similar color stability, making PEEK a viable alternative for FDPs when aesthetic appeal and antagonist protection are primary considerations. Competing Interests: The authors have declared that no competing interests exist. (Copyright © 2023, Rupawat et al.)
Databáze:	MEDLINE
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