Retention Load and Volume Loss of Telescopic PEEK Crowns with Different Tapers Angles and thickness: in vitro study. | ||
| Al-Azhar Journal of Dental Science | ||
| Article 7, Volume 25, Issue 4, October 2022, Pages 425-435 PDF (1.24 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ajdsm.2022.162091.1366 | ||
| Authors | ||
| Rania Ibrahim Hassan* 1; Sherin F Donia2 | ||
| 1Faculty of dentistry, Ahram Canadian University, 6 of October Egypt. | ||
| 2Lecturer of Removable Prosthodontics. Faculty of dentistry in Menoufia Unversity | ||
| Abstract | ||
| Objective : aim of this in vitro study was to investigate the Retention force and Volume Loss of CAD/CAM-fabricated polyetheretherketone (PEEK) telescopic crowns which with different Tapers and thickness. Material and methods Peek primary crowns (N = 5) were CAD/CAM milled and provided with secondary crowns CAD/CAM-fabricated PEEK secondary crowns (group N = 5) A universal testing machine was used to determine the retentive force and volume loss at values at baseline and after 3, 6, 9, and 12 months. Data were analyzed by using Statistical Package for Social Sciences P value <0.05(*) was considered significant difference & P-value <0.001(**) was considered highly significant difference. Results Maximum Retentive Load results analyzed by using mean and S.D. repeated measure ANOVA test is used to compare duration in each group which there is a highly significant difference between durations, also One Way ANOVA test is used to compare groups in each duration, while there is no significant difference between groups at each duration. PEEK secondary crowns exhibit stable retentive force values over 12 months of use showing no signs of deterioration while the retentive force values of electroformed secondary crowns increase over time. Conclusions Clinical relevance PEEK might be a suitable alternative to proven metallic materials for the fabrication of secondary crowns. | ||
| Keywords | ||
| Double; crowns; (PEEK) | ||
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