Related Experiment Video
Updated: May 22, 2026
A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
An ex vivo comparative study on the retention of custom and prefabricated posts
Abhinav Singh1, Ajay Logani, Naseem Shah
1Department of Conservative Dentistry and Endodontic, Centre for Dental Education and Research, All India Institute of Medical sciences, New Delhi, India.
Aim:
This study was designed to comparatively evaluate the effect of cyclic loading on the retention of custom-fabricated fiber-reinforced composite (CF-FRC), prefabricated metal, and glass fiber posts.
Materials And Methods:
Thirty mandibular first premolars decoronated at the CE junction were divided into three groups (n=10). Groups A, B, and C were restored using Para Post (Whale dent), Reforpost (Angelus), and CF-FRC post (Ribbond-THM), respectively. Five specimens from each group were subjected to cyclic loading. Tensile bond strength (TBS) was evaluated.
Results:
Pre-loading TBS values were statistically, significantly higher for all posts (P<0.05). Before and after loading, there was a significant difference between group C as compared to groups A and B.
Conclusions:
Cyclic loading reduced the retention of all posts but was comparatively lesser for the CF-FRC post. This system provides sufficient retention required for clinical success.
