원문정보
Comparison of accuracy of digital data obtained by intraoral scanner and extra oral scanner
초록
영어
Purpose: The purpose of this study was to compare the accuracy of the scan data acquired by the extra-oral and intra-oral scanner. Methods: The maxillary right first molar was made of polymethyl methacrylate (PMMA)specimen. This PMMA specimen was scanned with a engineering scanner and intra-oral scanner. Meanwhile, extra-oral scanner scanned stone die duplicated from PMMA master die. Trueness and precision of scan datas was measuredby3-dimensinal inspection. Independent t-test was conduct to analysis the significant difference.(a=0.05) Results: In the trueness analysis, mean of discrepancies were13.82um for intra oral scanner and16.84 um for extra-oral scanner. In the precision analysis, mean of discrepancies were 11.72 for inta-oral scanner and 9.2 for extra-oral scanner. Both trueness and precision showed a statistically significant difference (Table 1, p<0.05). Conclusion: Intra-oral scanner can show higher trueness than extra-oral scanner, it has lower precision.
목차
Ⅰ. 서론
Ⅱ. 연구 방법
1. 지대치 제작
2. 스캔 데이터 취득
3. 3차원 분석을 이용한 스캔 데이터의 정확도 분석
4. 통계 분석
Ⅲ. 결과
Ⅳ. 고찰
Ⅴ. 결론
REFERENCES