CS-3500 구강 내 스캐너로 채득된 디지털 인상의 신뢰도 및 정확도 평가
Reliability and Accuracy of Digital Impression Obtained from CS-3500 Intraoral Scanner
1
조회
0
다운로드
6
인용
0
참고문헌
키워드
초록
본 연구는 최신 경향의 구강 내 스캐너로 채득된 3차원 디지털 인상의 정확도와 신뢰도를 평가하기 위해 4가지 계측지점을 통하여 분석하였다. 주 모형과 비교하였을 때, 디지털 인상이 작게 계측되는 경향을 나타내었고, 각 계측지점별로 0.06∼0.12 mm 범위의 차이를 보였다. 선행연구의 결과에 의해 임상적으로 오차범위를 허용할 수 있는 것으로나타났으며, 환자의 진단이나 치아 교정치료 계획 수립 시사용되는 모형에는 큰 영향이 없음을 확인할 수 있었다. 실험에서는 구강 내 상황이나 해부학적 구조를 무시하고 진행하였지만, 실제 임상에서 사용 시에는 구강 내 협소한 공간, 타액 등으로 인한 치아면의 난반사 증가, 혀 등의 해부학적구조물로 인한 작업 방해 등의 여러 가지 요인이 인상과정에 영향을 줄 수 있을 것이라 판단된다. 추후 실험에서는 가능한 구강 내 상황을 재현한 상태에서 실험을 진행하면 좀더 임상 적용에 도움이 될 것으로 생각된다.
Abstract
The purpose of this study was to evaluate the reliability and accuracy of linear measurements in digital models compared to master model. A master model (ANKA-4; Frasaco GmbH, Tettnang, Germany) with the prepared upper full arch tooth was used. Four linear measurements were recorded between landmarks, directly on the master model and the digital models by a single examiner. Measurements were made with a digital caliper from manual model and with the software from the virtual models. The t-test for paired samples and intraclass correlation coefficient (ICC) were used for statistical analysis. The measurement of two methods showed good reliability. The mean differences between master and digital model were 0.06∼0.12 mm. These in vitro studies show that accuracy and reliability of the digital impression is similar to that of the gold standard. Therefore digital impression was also considered to be a acceptable for placement clinically.
참고문헌 (20)
- Mah J, "Current status and future needs in craniofacial imaging", Orthod Craniofac Res, 6, pp.10~16 (2003)
- White AJ, "Analysis of intra-arch and interarch measurements from digital models with 2impression materials and a modeling process based on cone-beam computed tomography", Am J Orthod Dentofacial Orthop, 137, pp.e451~e459 (2010)
- Chandran DT, "Twoand three-dimensional accuracy of dental impression materials: effects of storage time and moisture contamination", Biomed Mater Eng, 20, pp.243~249 (2010)
- Christensen GJ, "The state of fixed prosthodontics impressions:room for improvement", J Am Dent Assoc, 136, pp.343~346 (2005)
- Christensen GJ, "Impressions are changing: deciding on conventional, digital or digital plus in-office milling", J Am Dent Assoc, 140, pp.1301~1304 (2009)
- Bindl A, "Clinical and SEM evaluation of all-ceramic chair-side CAD", CAM generated partial crowns, 2003, pp.111, 163~169
- Nakamura T, "Marginal and internal fit of Cerec 3 CAD", CAM allceramic crowns, 2003, pp.16, 244~248
- Caputi S, "Dimensional accuracy of resultant casts made by a monophase, one-step and two-step, and a novel two-step putty", light-body impression technique: an in vitro study, 2008, pp.99, 274~281
- Seelbach P, "Accuracy of digital and conventional impression techniques and workflow", Clin Oral Investig, 17, pp.1~6 (2012)
- Ender A, "Full arch scans conventional versus digital impressions--an in-vitro study", Int J Comput Dent, 14, pp.11~21 (2011)
- 김기백, "전악의 디지털 인상 채득 시 치과용 모형재가 디지털 모형 정확성에 미치는 영향", 치위생과학회지, 12(6), pp.617~623 (2012), 한국치위생과학회
- Bland JM, "Statistical methods for assessing agreement between two methods of clinical measurement", Int J Nurs Stud, 47, pp.931~936 (2010)
- Lin LI-K, "A concordance correlation coefficient to evaluate reproducibility", Biometrics, 45, pp.255~268 (1989)
- 임미영, "석고 모형, 레이저 스캔 디지털 모형, 콘 빔 CT 영상 간의 모형 분석 계측치 비교", 대한치과교정학회지, 39(1), pp.6~17 (2009), 대한치과교정학회
- Bell A, "Assessment of the accuracy of a three dimensional imaging system for archiving dental study models", J Orthod, 30, pp.219~223 (2003)
- Watanebe-Kanno GA, "Reproducibility, reliability and validity of measurements obtained from Cecile 3 digital models", Braz Oral Res, 23, pp.288~295 (2009)
- Keating AP, "A comparison of plaster, digital and reconstructed study model accuracy", J Orthod, 35, pp.191~201 (2008)
- Kuroda T, "Threedimensional dental cast analyzing system using laser scanning", Am J Orthod Dentofacial Orthop, 110, pp.365~369 (1996)
- Lowey MN, "The development of a new method of cephalometric and study cast measuration with a computer controlled, video image capture system. Part Ⅱ: study cast mensuration", Br J Orthod, 20, pp.315~331 (1993)
- Quimby ML, "Rashid RG", Angle Orthod, 74, pp.298~303 (2004)