Translucency of Enamel and Dentin: A Biomimetic Target for Esthetic Dental Materials

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

Journal of Esthetic and Restorative Dentistry Pub Date : 2024-12-29 DOI:10.1111/jerd.13382

Rade D. Paravina, Pinar Cevik, Joe C. Ontiveros, William M. Johnston

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引用次数: 0

Abstract

Objective

This study aimed to assess the relative translucency parameter (RTP) of human enamel and dentin and set target RTP values for dental material development. Additionally, it seeks to validate the spectral RTP concept as supplementary quantitative information.

Materials and Methods

Slides of extracted human teeth, 1 and 2 mm thick enamel or dentin slides, were evaluated. RTP was calculated using CIEDE2000 (RTP₀₀) and CIELAB (RTP_ab) color difference formulas. Spectral RTP (SPECTRAL RTP) curves were also generated from differences between spectral reflectance values obtained against white and black backgrounds. Statistical analyses included multifactorial ANOVAs for each RTP and spectral RTP, and Pearson correlations between RTP and spectral RTP.

Results

Significant correlations were observed between the RTP and spectral RTP values (p < 0.001) at all studied wavelengths. RTP₀₀ and RTP_ab values were significantly different (p < 0.001). Enamel showed more translucency than dentin (p < 0.001), and 1 mm slices were more translucent than 2 mm slices (p < 0.001).

Conclusions

Spectral RTP values were influenced by the type of tissue (enamel, dentin), thickness (1 mm, 2 mm), and color difference formula (CIELAB2000, CIELAB). RTP curve values were influenced by tissue type, thickness, and wavelength. Spectral RTP and RTP curve values were correlated.

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牙釉质和牙本质的半透明：美学牙科材料的仿生目标

目的研究人类牙本质和牙釉质的相对半透明参数（RTP），为牙材料的开发提供参考。此外，它试图验证光谱RTP概念作为补充定量信息。材料与方法对拔除的人牙进行1、2 mm厚的牙釉质或牙本质玻片评价。采用CIEDE2000 （RTP00）和CIELAB （RTPab）色差公式计算RTP。光谱RTP （Spectral RTP）曲线也由黑白背景下获得的光谱反射率值的差异生成。统计分析包括各RTP和谱RTP的多因素方差分析，以及谱RTP与谱RTP之间的Pearson相关性。结果在所有研究波长的RTP值与光谱RTP值之间存在显著相关性（p < 0.001）。RTP00、RTPab值差异有统计学意义（p < 0.001）。釉质比牙本质更透明（p < 0.001）， 1 mm片比2 mm片更透明（p < 0.001）。结论光谱RTP值受组织类型（牙釉质、牙本质）、厚度（1 mm、2 mm）、色差配方（CIELAB2000、CIELAB）的影响。RTP曲线值受组织类型、厚度和波长的影响。光谱RTP值与RTP曲线值相关。

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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