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08 Jul 2022 (Vol 45 , Iss 05 )

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31 Jul 2022 (Vol 45 , Iss 05 )

Journal ID : TMJ-17-11-2021-10806
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Title : Comparative study between removable partial dentures frameworks fabricated using PEEK and using Co-Cr alloy: clinical study

Abstract :

Aim To conduct a clinical study to evaluate the fit accuracy of the removable partial denture (RPD) frameworks fabricated by 3D printing computer-aided design/computer-aided manufacturing (CAM-CAD) method and the conventional method using CS. Ten patients with partial tooth loss of a maxillary Kennedy class I were divided into two groups: in the first group, the RPD frameworks were fabricated from chromium-cobalt using CS casting technique in the second group, the RPD frameworks were fabricated from poly ether ketone (PEEK) using Milling technique. The fabricated frameworks were injected with polyvinyl siloxane (PVS) and were put inside the patient’s mouth, and then the rubber laminas were weighted. The results of Student T- test showed that there were statistically significant differences in the average weight of the rubber laminas in the two groups, where P<0.05. The gap in the group of CS frameworks was larger than that in the group of CAM-CAD (Milling) frameworks which achieved the best fit accuracy. The RPD frameworks fabricated from PEEK using CAM-CAD (Milling) technique achieved the best fit accuracy compared with the frameworks of Cr-Co fabricated using CS technique, where the accuracy was affected by the fabricating technique used.

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