The Effect of Cement Shade on the Optical Properties of Additively Manufactured Permanent Crown Materials.

IF 3.2 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Esthetic and Restorative Dentistry Pub Date : 2025-04-03 DOI:10.1111/jerd.13475

Jasmina Singh, Andrew B Cameron, Joanne Jung Eun Choi

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引用次数: 0

Abstract

Objectives: To investigate the effect of cement shade and printing parameters on the optical properties of additively manufactured (AM) permanent crown materials.

Methods: Two AM crown materials (Bego VarseoSmile Crown Plus and Formlabs Permanent Crown) and one conventional milled material were tested (n = 560). Dimensions for each specimen measured 10 × 10 mm and were categorized by thickness (1 and 2 mm). AM materials were additively manufactured (3D-printed) at three orientations: 0°, 45° and 90°. Specimens were cemented with four shades of dual-cure cement: light, neutral, warm, and translucent. Color change (ΔE) and translucency parameter (TP) measurements were calculated utilizing a spectrophotometer, VITA EasyShade V. Data was analyzed with a two- way ANOVA and Tukey's post hoc tests.

Results: Neutral cement shade exhibited the lowest ΔE overall (2.30 ± 0.43). Translucent cement shade exhibited the least color difference between materials. Milled materials generally exhibited higher ΔE (5.57 ± 0.26-7.17 ± 0.33) than AM materials. Material thickness significantly affected the ΔE across all shades of cement (p < 0.05). 45° print orientation for 2 mm thick specimens exhibited the greatest clinically acceptable ΔE.

Conclusion: Cement shade may cause clinically unacceptable color changes based on material choice and 3D-printing parameters. Clinicians providing permanent AM crowns must consider the impact of cement shade and printing parameters on aesthetic outcomes.

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水泥遮光剂对增材制造永久冠材料光学性能的影响。

目的：探讨水泥荫蔽和打印参数对增材制造（AM）永久冠材料光学性能的影响。方法：对两种AM冠材料（Bego VarseoSmile crown Plus和Formlabs Permanent crown）和一种常规铣削材料（n = 560）进行测试。每个标本的尺寸为10 × 10毫米，并按厚度（1和2毫米）分类。AM材料在0°、45°和90°三个方向上进行增材制造（3d打印）。标本用四种颜色的双固化水泥胶结：浅色、中性、暖色和半透明。颜色变化（ΔE）和半透明参数（TP）测量使用分光光度计，VITA EasyShade v进行计算。数据采用双向方差分析和Tukey事后检验进行分析。结果：中性水泥荫蔽整体最低ΔE（2.30±0.43）。半透明水泥遮光材料之间的色差最小。铣削材料的ΔE值（5.57±0.26-7.17±0.33）普遍高于AM材料。材料厚度显著影响ΔE所有颜色的水泥(p结论：根据材料选择和3d打印参数，水泥颜色可能会导致临床不可接受的颜色变化。提供永久性AM冠的临床医生必须考虑水泥阴影和打印参数对美学结果的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Esthetic and Restorative Dentistry 医学-牙科与口腔外科

CiteScore

6.30

自引率

6.20%

发文量

124

审稿时长

>12 weeks

期刊介绍： The Journal of Esthetic and Restorative Dentistry (JERD) is the longest standing peer-reviewed journal devoted solely to advancing the knowledge and practice of esthetic dentistry. Its goal is to provide the very latest evidence-based information in the realm of contemporary interdisciplinary esthetic dentistry through high quality clinical papers, sound research reports and educational features. The range of topics covered in the journal includes: - Interdisciplinary esthetic concepts - Implants - Conservative adhesive restorations - Tooth Whitening - Prosthodontic materials and techniques - Dental materials - Orthodontic, periodontal and endodontic esthetics - Esthetics related research - Innovations in esthetics