치과용 광중합 3D 프린터의 출력물 크기 설정에 따라 제작된 시적의치의 진실도 평가 = Evaluating the Trueness of the Trial Denture Made According to the Print Size Setting of the Dental Photopolymerization 3D Printer

다국어 초록 (Multilingual Abstract)

The purpose of this study is to compare and evaluate the trueness of trial denture made according to the output size settings of a dental photopolymerization 3D printer. The standard tessellation language (STL) files of trial denture design for this study were printed in 5 pieces each according to the output size setting (100%, 100.5%). The printed trial denture was scanned with a dental scanner, superimposed with the design STL file, and qualitative and quantitative data were obtained. The root mean square (RMS) data of the intaglio and outer surface between the two groups was analyzed with an independent t-test (α=0.05), and a significant difference was found between both groups (P<0.05). The RMS values of the intaglio and outer surface for the 100.5% size trial denture were 139.16±20.48 and 87.38±8.26, indicating better RMS values than those of the 100% size. Based on the results of this study, it is clinically appropriate to set the output size to 100.5% when manufacturing a trial denture with a photopolymerization 3D printer.

국문 초록 (Abstract)

본 연구의 목적은 치과용 광중합 3D 프린터의 출력물 크기 설정에 따라 제작된 시적의치의 진실도를 비교 및 평가하는 것이다. 본 연구를 위한 시적의치 디자인 STL(standard tessellation language) 파일은 출력물 크기 설정(100%, 100.5%)에 따라 각각 5개씩 출력되었다. 출력된 시적의치는 치과용 스캐너로 스캔하여 디자인 STL 파일과 중첩하였고, 정성적 및 정량적 데이터를 확보하였다. 두 그룹 사이의 내면 및 외면에 대한 root mean square(RMS) 데이터의 독립 t검정으로 분석하였으며(α=0.05), 두 그룹 사이에서 모두 유의한 차이를 보였다(P<0.05). 100.5% 크기의 시적의치에 대한 내면 및 외면의 RMS 값은 139.16±20.48, 87.38±8.26로, 100% 크기보다 우수한 RMS 값을 나타냈다. 본 연구 결과를 통해 광중합 3D 프린터로 시적의치 제작 시, 출력물 크기는 100.5%로 설정하는 것이 임상적으로 적절하다.

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