Comparison of the accuracy of digital models made from white light scanner by scanning method (스캐닝 방법에 따른 백색광 스캐너 기반으로 채득된 디지 털 모형의 정확성 비교)

김기백; 이경탁; Jae-Hong Kim (김재홍)

Comparison of the accuracy of digital models made from white light scanner by scanning method

Journal of Korean society of Dental Hygiene
Abbr : J Korean Soc Dent Hyg
2012, 12(6), pp.1082~1089
Publisher : Korean Society of Dental Hygiene
Research Area : Medicine and Pharmacy > Dentistry

김기백 ¹, 이경탁 ¹, Jae-Hong Kim ¹

¹고려대학교

Accredited

ABSTRACT

Objectives : The aim of this study was to determine the accuracy of digitized stone models, impression materials compared to the master model and the reliability of the computer aided analysis. Methods : A master model(500B-1, Nissin dental product, Japan) with the prepared lower full arch tooth was used. Ten vinyl polysiloxane impressions(Examix , GC Industrial Corp, Japan) of master model were taken and type Ⅳ stone(aesthetic-base gold , Dentona, Germany) were poured in stone models. The linear distance between the reference points were measured and analyzed on the Delcam Copycad (Delcam plc, UK). The t-student test for paired samples was used for statistical analysis. Results : The mean differences to master model for stone model and impression material were 0.11~0.19mm, and 0.19~0.29mm, respectively. There were statistical differences in dimensional accuracy for full arch impression between master model and stone model/impressions(p<.05). Conclusions : Two different scanning methods showed clinically acceptable accuracy of full arch digital impression produced by them. These results will have to be confirmed in further clinical studies.

KEYWORDS

accuracy, digital model, impression material, scanning method, stone model

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