A Scoping Review on the Accuracy of Fit of Removable Partial Dentures in a Developing Digital Context
Al Mortadi, Noor
Alzoubi, Karem H.
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Purpose: The aim of this paper is to evaluate studies on the quality of fit of alloy removable-partial-dentures (RPDs) produced by computer-aided design/computer-aided manufacturing (CAD/CAM) and rapid prototyping (RP) technology. This paper offers a comprehensive scoping review of various methods of assessing the quality of fit of RPDs in the context of a developing digital approach to manufacturing and assessment. Methodology/Approach: A search was made using MEDLINE/PubMed, Scopus, and Science Direct to identify the studies of the accuracy of fit of RPDs. Findings: Optical and physical examination of dentures “in situ” on the model or in the patient’s oral cavity were the most commonly used methods for the assessment of fit of RPDs. Eighteen of the included studies assessed the internal fit between RPDs and oral tissues or models using either polyvinyl silicone materials as filler, calipers, photographs, and microscopes or a combination of these. Two studies used visual assessment. Most studies reported that the fit of RPDs ranged from satisfactory to excellent. However, many of these assessments seemed somewhat subjective and flawed with regard to assessing indentations of the framework into a model or distortion. Two papers used a new method of computer-based superimposition which included a color map of discrepancies to assess the fit of the machine-produced RPDs offering possibilities to quantify the assessment of fit, perhaps leading to a more objective assessment. Despite the limited number of clinical trials, the available evidence was thought to reinforce the claim that the fit of RPDs fabricated digitally was acceptable. Conclusion: The recent introduction of color maps to compare the differences between the fitting surface and the model is promising. However, a new method for displaying discrepancies shown by color maps is introduced, which could lead to a more quantitative assessment.
Clinical, Cosmetic and Investigational Dentistry;
Al Mortadi, N., Alzoubi, K.H. and Williams, R. (2020) 'A Scoping Review on the Accuracy of Fit of Removable Partial Dentures in a Developing Digital Context', Clinical, Cosmetic and Investigational Dentistry, 12, pp.551-562.
Article published in Clinical, Cosmetic and Investigational Dentistry, available open access at https://doi.org/10.2147/CCIDE.S282300
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
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