Abstract
Evaluation of the Fit Accuracy of Removable Partial Denture Frameworks Fabricated Using Three Different Techniques: An In Vitro Study
Highlights
Removable partial denture frameworks are considered the best treatment in many clinical cases, especially in the case of loss of bony and tissue support [1, 2]
Materials and Methods: Fifteen patients with partial tooth loss of a maxillary Kennedy class I. They were divided into three groups: in the first group, the removable partial denture frameworks were fabricated from chromium-cobalt using CS casting technique; in the second group, the removable partial denture frameworks were fabricated from chromium-cobalt using selective laser melting (SLM) technique; and in the third group, the removable partial denture frameworks were fabricated from poly ether ether ketone (PEEK) using Milling technique
The one-way ANOVA test was conducted to study the significance of the differences in the average weights of rubber laminas between the group of frameworks fabricated from Cr-Co alloys using SLM technique, the group of those fabricated from Cr-Co alloys using CS technique, and the group of those fabricated from PEEK using Milling technique for the samples of fit accuracy study
Summary
Removable partial denture frameworks are considered the best treatment in many clinical cases, especially in the case of loss of bony and tissue support [1, 2]. Removable partial denture frameworks were used clinically in the mid-nineteenth century. It is likely that removable partial denture frameworks will remain a treatment option compared to the more expensive alternatives [3]. Cr-Co alloys are considered one of the most popular metal alloys used in the fabrication of removable partial denture frameworks. This is due to their high hardness, excellent resistance to corrosion and oxidation, lower price compared to gold alloys, and their thermal conductivity [4, 5]. Despite the advantages of Cr-Co alloy, it has some defects, such as inflammatory reactions to the oral tissues, the existence of a metallic taste, and the failure to meet the patient's aesthetic requirements in cases where the retainers of the clasps appear [6, 7]
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