Color Stability of Different CAD/CAM Complete Denture Resins.

IF 1.8

The International journal of prosthodontics Pub Date : 2025-07-21 DOI:10.11607/ijp.9390

Martina Bonvicini, Carlo Monaco, Claudia Mazzitelli, Tatjana Maravic, Annalisa Mazzoni, Lorenzo Breschi

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引用次数: 0

Abstract

Purpose: The purpose of this in vitro study was to evaluate the color stability of resins for complete dentures produced with different technologies after immersion in coffee solution.

Materials and methods: 50 square-shaped specimens were prepared from different resins for complete dentures (n=10): Probase Hot (PH; Ivoclar AG), IvoBase CAD (IBC; Ivoclar AG), Ivotion Dent white (ID, Shade A2; Ivoclar AG), Dima Print Denture Base (DPDB; Kulzer), Dima Print Denture Teeth (DPDT, Shade A2; Kulzer). One side of each specimen was polished according to manufacturers' instructions (POL) while the other one was left unpolished. (UNPOL) (T0). The specimens were immersed in a coffee solution at 37 °C for 28 days (T28). During the storage period, the staining solution was replaced every 24 h. The CIELab color. differences (ΔEab) between the different time intervals were evaluated using a live-video. comparative spot digital colorimeter (Smart_Vision). Data were collected and statistically analyzed (p<0.05).

Results: The highest color stability was recorded for IBC UNPOL (∆E= 0.32; p<0.05). All specimens scored an acceptable ∆E, except for DPDT UNPOL (∆E= 4.56) which scored significantly lower as compared to all the other specimens (p>0.05).

Conclusions: Milled and 3D printed resins for complete dentures demonstrated comparable color stability to traditionally-fabricated materials. Polishing influenced the color stability only in the 3D printed white resin where the unpolished group reached an clinically unacceptable level of color change after staining.

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不同CAD/CAM全口义齿树脂的颜色稳定性。

目的：研究不同工艺制作的全口义齿树脂在咖啡溶液浸泡后的颜色稳定性。材料和方法：用不同树脂制备50个方形标本用于全口义齿（n=10）： Probase Hot (PH；ivocar AG, IvoBase CAD (IBC；Ivoclar AG)， Ivoclar凹痕白色(ID, Shade A2；Ivoclar AG， Dima打印义齿基托（DPDB）；Kulzer)， Dima打印义齿(DPDT, Shade A2；Kulzer)。每个样品的一面按照制造商的说明（POL）抛光，而另一面不抛光。(UNPOL) (T0)。标本在37℃的咖啡溶液中浸泡28天（T28）。在保存期间，每24小时更换一次染色液。使用实时视频评估不同时间间隔之间的差异（ΔEab）。比较点数字色度计（Smart_Vision）。结果：IBC UNPOL的颜色稳定性最高(∆E= 0.32；p0.05)。结论：用于全口义齿的研磨和3D打印树脂具有与传统制造材料相当的颜色稳定性。抛光仅影响3D打印白色树脂的颜色稳定性，未抛光组在染色后达到临床不可接受的颜色变化水平。

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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The International journal of prosthodontics

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