IN-VITRO RETENTION OF HIGH ARCHED MAXILLARY DENTURES CONSTRUCTED FROM CONVENTIONAL, THERMOFORMED, AND MILLED CAD/CAM RESINS.

Document Type : Original Article

Authors

1 B D S, 2015, Faculty of Dentistry, Misr University for Science and Technology, MUST. Teaching assistant, Faculty of Dentistry MUST, Egypt.

2 Lecturer of Prosthetic Dentistry, Faculty of Dentistry Minia University, Egypt

3 Professor of Prosthetic Dentistry, Faculty of Dentistry, Misr University for Science and Technology, MUST, Egypt.

4 Professor of Prosthetic Dentistry, Mina University and Dean, Faculty of Dentistry, Delta University.

Abstract

Purpose: this study was to evaluate the Retention of high-arched maxillary dentures constructed from conventional, thermoformed, and milled CAD/CAM resins.
Materials and Methods: An edentulous patient with high -arched palate was selected from the outpatient clinic, Department of Prosthetic Dentistry, Faculty of Dentistry, Minia University. The patient was seeking complete denture treatment. Using the master cast of this case; thirty stone casts were duplicated, numbered, and randomly allocated to one of three study groups 10 casts each. Thirty denture bases were constructed from the following materials to be as identical as possible 10 of each of the following material: conventional heat cure resin, thermoformed resin, and milling resin by CAD/CAM. The retention of the produced denture bases was tested using a universal testing machine .Results: The thermoformed group displayed the highest numeric retention mean (5.576 N) followed by CAD/CAM (4.888 N) and conventional method (3.232 N). There were statistically significant differences between all groups. Conclusions: within the limitations of this in vitro study, it may be concluded that: The thermoformed resin may be the most suitable material for high arched palate followed by CAD CAM materials. The conventional technique in this case is less recommended.

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Egyptian Dental Journal
Volume 70, Issue 3 - Serial Number 4
Fixed Prosthodontics, Removable Prosthodontics and Dental Materials
July 2024
Pages 2509-2517

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