Impact of Extrinsic Staining on the Physical Properties Oof Provisional Resins Fabricated by Digital and Conventional Methods - An In Situ Study.

Pedro Roberto Braz Rodrigues, Ana Lucia Caetano Pereira, Rocio Geng Vivanco, Fernanda de Carvalho Panzeri
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Abstract

Objective: To evaluate, in situ, the color stability of a printed resin (PR), milled resin (MR), and bisacrylic resin (BR) after exposure to coffee and cigarette smoke.

Materials and methods: Twelve participants per group (Control, coffee consumers, and smokers) used intraoral devices containing the specimens resins. Seventy-two samples of each resin were prepared, and initial surface roughness and color readings recorded. Participants wore the device, containing two samples of each resin, for 15 days, brushing three times per day. Final color and surface roughness measurements were obtained. Water sorption and solubility analyses were conducted (n=20). Data were analyzed using ANOVA and Tukey tests (α=0.05).

Results: BR had the highest alterations in surface roughness under control conditions and after cigarette smoke exposure (p<0.05). PR showed the highest surface roughness and MR the lowest alteration after coffee consumption (p<0.05). After coffee consumption, BR exhibited higher color change than PR (p<0.05); and following cigarette smoke exposure, BR showed the highest alteration (p<0.05), while MR had the lowest (p<0.05). Cigarette smoke caused the highest color change across all resins. BR exhibited highest water sorption and solubility (p<0.05).

Conclusion: Printed and milled resins demonstrated better color stability and less alteration in surface roughness change compared to bis-acrylic resin.

Clinical significance: The results suggest that clinicians may achieve better esthetic outcomes by opting for digital methods, especially in patients exposed to common staining agents like coffee and cigarette smoke.

外部染色对数字和传统方法制备的临时树脂物理性能的影响-一项原位研究。
目的:原位评价印刷树脂(PR)、研磨树脂(MR)和双丙烯酸树脂(BR)暴露于咖啡和香烟烟雾后的颜色稳定性。材料和方法:每组12名参与者(对照组、咖啡消费者和吸烟者)使用含标本树脂的口腔内装置。每种树脂制备了72个样品,并记录了初始表面粗糙度和颜色读数。参与者戴着这种装置,每种树脂含有两个样本,持续15天,每天刷三次。获得了最终的颜色和表面粗糙度测量值。进行了吸水性和溶解度分析(n=20)。数据分析采用方差分析和Tukey检验(α=0.05)。结论:与双丙烯酸树脂相比,印刷和研磨树脂具有更好的颜色稳定性和更小的表面粗糙度变化。临床意义:结果表明,临床医生可以通过选择数字方法获得更好的美学效果,特别是对于暴露于咖啡和香烟烟雾等常见染色剂的患者。
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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