디지털 광학기술인 3D 프린터로 제작된 임시수복용 레진의 두께별 색 평가
Color evaluation by thickness of interim restorative resin produced by digital light processing 3D printer
강월, 김원기,
소속 상세정보
강월 ( Kang Wol ) - Daegu Health College Department of Dental Technology
김원기 ( Kim Won-Gi ) - Daegu Health College Department of Dental Technology
Abstract
Purpose: The purpose of this in vitro study was to measure and compare the thickness-dependent color dimensions of digital light processing (DLP) three-dimensional (3D) printer and conventional interim restorative resin.
Methods: Specimens (N=60) were fabricated using either subtractive manufacturing (S group) or DLP 3D printing (D group) material. All milled and 3D-printed specimens were allocated into three different groups (n=10) according to different thicknesses as follows: 1.0, 1.5, and 2.0 mm. Color measurements in the CIELab coordinates were made using a spectrophotometer under room light conditions (1,003 lux). The color differences (ΔE*) between the specimen and control target data were calculated. Data were analyzed using the one-way analysis of variance (ANOVA). Post hoc comparisons were conducted using Tukey's honestly significant difference method (α=0.05 for all tests).
Results: The ΔL*, Δa*, Δb*, and ΔE* values of interim restorative resin produced by DLP 3D printing were obtained in terms of the specimen's thickness increased compared with the increases by subtractive manufacturing. When the thickness was similar, the color difference between subtractive manufacturing and DLP 3D printing was ≥5.5, which is a value required by the dentist for remanufacturing.
Conclusion: Color was influenced by the thickness of the interim restorative resin produced by DLP 3D printing.
키워드
Color; Temporary dental restoration; Three-dimensional printing
원문 및 링크아웃 정보
등재저널 정보