Evaluation of the effect of modified vertical tooth preparation technique in monolithic zirconium crowns restoration in posterior area
10.19405/j.cnki.issn1000-1492.2024.10.027
- VernacularTitle:改良垂直型牙体预备技术在后牙区全锆冠修复治疗效果评价
- Author:
Xiaobo XU
1
;
Yulin GONG
;
Lili SHEN
;
Mian WANG
;
Yuting WANG
;
Yingyan WU
Author Information
1. 安徽医科大学合肥口腔临床学院,合肥 230061;安徽医科大学第五临床学院,合肥 230032;合肥市口腔医院特需科,合肥 230061
- Keywords:
posterior area;
vertical tooth preparation;
preparation of teeth without shoulder;
monolithic zirconia crowns;
suitability
- From:
Acta Universitatis Medicinalis Anhui
2024;59(10):1881-1885
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effect of modified vertical tooth preparation with full zirconium crown resto-ration in molar area.Methods A randomized study was conducted in 84 patients with all-ceramic crown restoration of posterior teeth.90 full crown restorations were collected and randomly divided into two groups:45 teeth in exper-imental group were treated with modified vertical tooth preparation,while 45 teeth in control group were treated with conventional horizontal tooth preparation with full zirconium crown restoration.When patients wore teeth,the resto-ration effects of the two groups were evaluated respectively,and then the marginal and internal fitness of the two groups were measured by silicone rubber replication method;gingival index(GI)and sulcus bleeding index(SBI)scores were recorded 6 months after wearing teeth.Results The results of chair-side evaluation of the two groups showed that the marginal fitness of the experimental group was better than that of the control group,and the differ-ence was statistically significant(P=0.036);the measured value of marginal fitness of prostheses in experimental group was better than that in control group,and the difference was statistically significant(P＜0.001);after 6 months,there was no mechanical complication between the two groups,and there was no significant difference in GI and SBI scores of periodontal soft tissue indexes.Conclusion Modified vertical tooth preparation abutment can significantly improve the marginal fitness of all-ceramic crown,which will not change the health status of peri-crown gingiva.
- Full text:2024122601011203197改良垂直型牙体预备技术在后牙区全锆冠修复治疗效果评价_许晓波.pdf
