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KMID : 0362120140360020091
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Journal of Technologic Dentistry
2014 Volume.36 No. 2 p.91 ~ p.96
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Evaluation of validity of polyurethane model fabricated by intra-oral scanning method
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Kim Won-Tae
Lee Byung-Ki
Hyun Joung-Ku
Kim Ki-Baek
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Abstract
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Purpose: The purpose of this study was evaluate the validity of polyurethane model fabricated by intra oral scanning method.
Methods: Ten sam cases of stone models were manufactured from master model, and polyurethane models were made with the intra oral scanning and CNC milling method. One examiner individually measured 6 distances(intercanine distance, intermolar distance, two dental arch lengths(right, left) and two diagonal of dental arch lengths(right, left) on the stone models and the polyurethane models. The Mann-Whitney U test(α=0.05) were used for statistical analysis.
Results: The mean difference between measurements made directly on the stone models and those made on the polyurethane models was 0.31-0.38mm. No statistically differences between the two groups were founded 4 distances(p>0.05), but 2 distances were statistically significant(p<0.05).
Conclusion: Stone models showed larger than polyurethane models fabricated by intra oral scanning method.
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KEYWORD
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Dental CAD-CAM, Dental model, Digital dentistry, Intra oral scanning
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