Retention Load and Volume Loss of Telescopic PEEK Crowns with Different Tapers Angles and thickness: in vitro study.

Document Type : Original Article

Authors

1 Faculty of dentistry, Ahram Canadian University, 6 of October Egypt.

2 Lecturer 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

Main Subjects

Al-Azhar Journal of Dental Science
Volume 25, Issue 4 - Serial Number 4
October - Restorative Dentistry Issue (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
October 2022
Pages 425-435

Files

Share

How to cite

Statistics