Retention and stress distribution induced in mandibular implant-retained complete overdenture with different interimplant distance (An In-Vitro study).

Document Type : Original Article

Authors

1 Faculty of dentistry Al-Azhar University Cairo-boys Removable prosthodontics department

2 Removable Prosthodontics, Faculty of Dental Medicine, Boys, Al-Azhar University, Cairo.

3 Department of Removable prosthodontics, Faculty of Dental Medicine, Boys, Cairo Al-Azhar University

Abstract

Abstract:
Objective: The loss of retention or adjustment of overdentures was the most commonly reported complication type in the dental office. So, this study was aimed to evaluate the retention and stress distribution induced in implant-retained overdenture with different inter- implant distance in vitro study.
Materials and Methods: Six implant-retained overdenture models were fabricated on acrylic models with two screwed implants at three-different interimplant distances (19 mm, 23 mm, and 29 mm) to measure the overdenture retention using digital force gauge as well as to the stress distribution around the dental implant using strain gauge with unilateral load application at the second premolar, first molar, and the second molar sites.
Results: The results of the retention test, revealed no statistically significant difference among the tested groups. While the strain results showed a statistically significant difference between all tested groups.
Conclusion: The smaller interimplant distance could improve the retention of the overdenture as well as it could allow better stress distribution around the dental implants.
Keywords: Interimplant distance, Overdenture, Retention, Stress-distribution

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Al-Azhar Journal of Dental Science
Volume 25, Issue 2 - Serial Number 2
April - Restorative Dentistry Issue (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
April 2022
Pages 111-117

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