Surface Roughness Evaluation of Pre- Versus Post-Crystallization Polish of Two High-Strength Silicate Ceramics for Chairside CAD/CAM Technology

Author:

Rea Felipe Tarosso1,Valcanaia Andre1,Herrera-Fierro Pilar2,Verma Manish3ORCID,Neiva Gisele de Faria1

Affiliation:

1. Department of Cariology, Restorative Sciences, and Endodontics (CRSE), School of Dentistry, University of Michigan, Ann Arbor, MI 48104, USA

2. Lurie Nanofabrication Facility, Department of Electrical, Engineering and Computer Sciences (EECS), University of Michigan, Ann Arbor, MI 48104, USA

3. Center for Consulting for Statistics, Computing and Analytics Research (CSCAR), University of Michigan, Ann Arbor, MI 48104, USA

Abstract

This in vitro study evaluated the surface roughness (Sa) of two high-strength silicate ceramics, lithium disilicate IPS e.max CAD, Ivoclar Vivadent (LDS group), and zirconia-reinforced lithium silicate Vita Suprinity, VITA Zahnfabrik (ZLS group). The surface roughness was investigated before and after milling using different polishing systems and timings relative to the final crystallization of the ceramics. Forty-eight samples per group were polished by a single calibrated operator using two polishing systems: Dialite LD (Brasseler) and Lithium Silicate Polishers (Meisinger) for the LDS group and Dialite LD (Brasseler) and Vita Suprinity Polishing Set Technical (VITA Zahnfabrik) for the ZLS group, both pre- and post-crystallization. Surface roughness was measured using a confocal laser microscope (OLS4000 LEXT/Olympus), with scanning electron microscopy (SEM) used to evaluate surface morphological changes. Significant differences in Sa values were found between baseline groups, with ZLS exhibiting lower values. All polishing methods significantly reduced surface roughness compared to baseline (p ≤ 0.05). No significant differences were found in LDS samples when polishing pre- or post-crystallization (p = 0.129), while for ZLS samples, post-crystallization polishing achieved significantly smoother surfaces (p < 0.001). The study concluded that the choice of polishing system and timing did not significantly affect surface roughness for LDS. However, it is recommended that post-crystallization polishing be performed for the optimal smoothness of ZLS. This study aimed to evaluate the post-milling polishing procedures of CAD/CAM high-strength restorations, emphasizing the importance of an optimal surface roughness to prevent issues such as increased risk of abrasion on opposing teeth, enhanced plaque adhesion, and mechanical failures. Investigating these polishing techniques enables clinicians to optimize clinical performance, thereby improving the quality and longevity of high-strength silicate ceramics.

Funder

LeGRO Internal Funding Award

Publisher

MDPI AG

Reference41 articles.

1. Chairside Computer-Aided Direct Ceramic Inlays;Brandestini;Quintessence Int.,1989

2. Ceramic Materials in Dentistry: Historical Evolution and Current Practice;Kelly;Aust. Dent. J.,2011

3. Contemporary Evidence of CAD-CAM in Dentistry: A Systematic Review;Suganna;Cureus,2022

4. The Evolution of the CEREC System;J. Am. Dent. Assoc.,2006

5. Overview of CEREC CAD/CAM Chairside System;Santos;Gen. Dent.,2013

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3