Effect of Artificially Accelerated Ageing and Different Mouth Rinses on Color Stability of Veneered PEEK Crowns | ||||
| Egyptian Dental Journal | ||||
| Article 2, Volume 67, Issue 1 - January (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials), January 2021, Page 497-507 PDF (325.57 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2020.42708.1263 | ||||
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| Authors | ||||
Ahmed Ziada 1; Marwa Beleidy  2
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| 1Lecturer, Department of Fixed Prosthodontics, Faculty of Dentistry, Benisuef University, Benisuef, Egypt. | ||||
| 2Lecturer, Department of Fixed Prosthodontics, Faculty of Dentistry, October 6th University, Giza, Egypt. | ||||
| Abstract | ||||
| Statement of problem:Veneered polyetheretherketone(PEEK) is a recent alternative choice for fixed dental prostheses.There is a lack of data about the color stability of different veneering composite techniques of CAD/CAM PEEK cores. Purpose:To verify the effect of thermocycling and different mouth rinses on color stability of CAD/CAM composite versus conventional nanohybrid composite veneered PEEK crowns. Methods:Forty-two duplicated epoxy resin dies of prepared mandibular first molar to receive ceramic crown were fabricated.42 CAD/CAM PEEK cores were fabricated and divided into two groups(n=21)based on the veneering technique;group(C):nanohybrid crea.lign composite veneered PEEK cores and group(H):HIPC veneered PEEK cores. Each group was subdivided based on mouth rinse into 3 groups(n=7):Listerine-alcohol free, Hexitol and Distilled water.The color at baseline, after thermocycling equivalent to clinical 6 months service and 1-week immersion in mouth rinses were measured utilizing a spectrophotometer.The data were statistically analyzed using ANOVA,pair-wise Tukey’s post-hoc and student t-tests to reveal the significance between groups(P ≤ 0.05). Results:All specimens showed visually unperceptible color differences after thermocycling and immersing in mouth rinses(∆E*<3.3).Based on material,C group showed a statistically significant higher color change values than H group.ANOVA test revealed that the highest color change was for Hexitol followed by Listerine then distilled water(p=<0.0001<0.05).Tukey’s post-hoc test showed non-significant difference between Hexitol and Listerine.The interaction between the effect of mouth rinses and type of veneering composite materials was statistically non-significant for C group while significant for H group(P>0.05). Conclusions:Although visually nonperceptible,HIPC or nanohybrid composite veneered PEEK crowns showed a color difference after thermocycling and immersion in different mouth rinses. | ||||
| Keywords | ||||
| HIPC; nano-hybrid composite; PEEK; CAD/CAM; color stability and mouth rinse | ||||
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