The effects of mesh reduction on the volume and trueness of single-crown restorations
10.3969/j.issn.1001-3733.2024.01.005
- VernacularTitle:网格数量简化对单冠修复体外形体积及正确度影响的研究
- Author:
Xin WANG
1
;
Dan MA
;
Chen LIU
;
Yuchen LIU
;
Shizhu BAI
Author Information
1. 710032 西安,口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔医学重点实验室,空军军医大学第三附属医院数字化口腔医学中心
- Keywords:
CAD/CAM;
Single-crown restoration;
Mesh reduction;
Trueness;
3D deviation;
RMS value
- From:
Journal of Practical Stomatology
2024;40(1):31-35
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To assess the impact of reducing the mesh density on the overall volume and trueness of single-crown restora-tions.Methods:15 single-crown restorations were included,and their mesh density in 3D software was simplified by 75％,50％,25％,10％and 5％respectively.The overal volume,file size and mesh edge length of the restorations with different reduction levels were compared.Deviation analysis was conducted by curving clipping the area of the shoulder,tissue surface(except for the shoulder)and occlusal surface of the restorations and compared with those of the corresponding regions in the non-simplified restorations.Trueness was assessed using the root mean square(RMS)values for the volume and trueness of different areas.Results:Reducing the mesh den-sity did not significantly affect the overal volume of the single-crown restorations(P＞0.05),but it had a significant impact on the file size(P＜0.001),mesh edge length(P＜0.001)and the trueness of the shoulder(P＜0.001),tissue surface(except for the shoulder)(P＜0.001)and occlusal surface(P＜0.001)areas.Conclusion:Reducing the mesh density had little impact on the overall volume of the restorations but significantly affected their trueness.
