|
|
|
| The Effect of Digital and Alloy Splint Impressions on the Marginal Fit of Implant Crown and Bridge Restorations |
| LI Lin, HUANG Liyun, ZENG Pingping, et al |
| The 909 Hospital of the Joint Logistic Support Force of the People's Liberation Army, Fujian Zhangzhou 363000, China |
|
|
|
|
Abstract Objective: To compare the effect of digital impression and alloy splint impression on the edge of implant crown and bridge restoration. Methods: 120 patients with crown and bridge implantation from January 2019 to January 2021 in our hospital were prospectively selected as the subjects, and randomly divided into observation group (alloy splint impression) and control group (digital impression), with 60 cases in each group. The two groups were observed for 3 months, and the periodontal indexes of the two groups before and after treatment were compared. Patients were followed up for the incidence of defective restorations and the degree of closeness of the edges of the restorations and surveyed on satisfaction. Results: There was no significant difference in periodontal indexes between the two groups before treatment (P<0.05); the plaque index, periodontal pocket depth, gingival index and bleeding index in the observation group were lower than those in the control group after treatment, and the differences were statistically significant (P<0.05); the ratio of prostheses that were too long or too short and early contact in the observation group (3.3%, 5.0%) was significantly lower than that of the control group (13.1%, 16.7%), the difference was statistically significant (P<0.05); there was no statistically significant difference in the incidence of overhang and over-loose or over-tightening (P>0.05); the observation group had lower edge consistency at A1, A2, A3, A4 and A5 points than the control group, and the difference was statistically significant (P<0.05); the patient satisfaction in the observation group (95.0%) was significantly higher than that in the control group (80.0%), and the difference was statistically significant (P<0.05). Conclusion: Compared with digital impressions, alloy splint impressions can improve the tightness of the edge of implant crown and bridge restorations, which improves the patient's periodontal indicators, reduces the occurrence of too long or too short restorations, and early contact, etc, and patient satisfaction is high, which is worthwhile for application.
|
|
|
|
|
|
[1] 洪涛,李志文,张芳,等.种植修复数字化口内印模及其精度的影响因素[J].实用口腔医学杂志,2021,37(2):263-268.
[2] 江波,张雪舟,向梅,等.数字化印模应用于全牙弓种植固定修复的临床研究[J].口腔医学研究,2019,35(9):906-909.
[3] Dhingra,Ajay,Taylor,et al.Digital custom impression technique to record emergence profile and fabrication of an esthetic implant supported restoration[J].Journal of Prosthodontics:Official Journal of the American College of Prosthodontists,2020,29(7):636-639.
[4] Schubert Oliver,Beuer Florian,Schweiger Josef,et al.Digital tissue preservation concept:a workflow for guided immediate implant placement and restoration[J].Journal of Prosthodontics:Official Journal of the American College of Prosthodontists,2019,28(6):613-617.
[5] 陈玲,陈成,李志勇,等.口内扫描数字化印模对固定修复临床应用效果的Meta分析[J].华西口腔医学杂志,2021,39(3):306-312.
[6] Oliver Schubert,Florian Beuer,Josef Schweiger,et al.Digital tissue preservation concept:a workflow for guided immediate implant placement and restoration[J].Journal of Prosthodontics,2019,28(6):613-617.
[7] 张志升,金地,张怡,等.数字化与传统印模在固定修复中的对比研究[J].临床口腔医学杂志,2019,35(1):20-23.
[8] 张波,伊远平.数字化印模技术在口腔修复中的临床应用分析[J].贵州医药,2019,43(8):1297-1299.
[9] 张津京,陆支越.印模方式及预备体设计对全瓷高嵌体适合性的影响[J].口腔颌面修复学杂志,2019,20(2):65-69.
[10] Merrill TC,Mackey T,Luc R,et al.Effect of chairside CAD/CAM restoration type on marginal fit accuracy:a comparison of crown,inlay and onlay restorations[J].Eur Prosthodont Restor Dent,2021,29(2):119-127. |
|
|
|
2022, Vol. 28 
