Evaluation of the effect of chair side CAD/CAM all ceramic crowns for restoration of posterior tooth defects

doi:10.19439/j.sjos.2025.01.015

Abstract

Abstract: PURPOSE: To investigate the effect of chair side computer aided design/computer aided manufacturing (CAD/CAM) crown restoration technique in the treatment of posterior tooth defects and its influence on chewing ability. METHODS: A total of 98 patients with posterior dental defects treated from June 2023 to May 2024 were selected and divided into control group (traditional silicone rubber impression crown repair) and experimental group (chair side CAD/CAM crown repair) according to different treatment methods. The repair effect, masticatory efficiency and bite force before and after treatment, periodontal index, complication rate and patient satisfaction were compared between the two groups. SPSS 22.0 software package was used for statistical analysis of the data. RESULTS: One month after treatment, there was no significant difference in comfort, edge fit, color matching and surface texture between the experimental group and the control group(P>0.05). The experimental group was significantly better than the control group in adjacency contact, secondary caries prevention and gingival status (P<0.05). After treatment,gingival index and plaque buildup, gingival sulcus bleeding index, the degree of gum health improvement of loose tooth in the experimental group were significantly better than in the control group(P<0.05). There was no significant difference in the incidence of complications between the two groups after treatment(P>0.05). Repair satisfaction of the experimental group was 96.15%, which was significantly higher than 86.96% of the control group(P<0.05). CONCLUSIONS: Chair side CAD/CAM crown restoration technology has good application value in the treatment of patients with posterior dental defects, which can significantly improve the repair effect, improve chewing ability, effectively inhibit gingival inflammation and dental plaque generation, reduce the risk of gingival bleeding and tooth loosening, and significantly improve patients' satisfaction.

Key words: Computer aided design/computer aided manufacturing, Crown repair, Posterior tooth defect, Chewing ability, Gum health

CLC Number:

R783.3

ZUO Yang, XU Xiao-bo, LIU Lei, WANG Yu-ting. Evaluation of the effect of chair side CAD/CAM all ceramic crowns for restoration of posterior tooth defects[J]. Shanghai Journal of Stomatology, 2025, 34(1): 83-87.

References

[1] Sun Y, Strasding M, Liu X, et al.Design of customized soft tissue substitutes for anterior single-tooth and posterior double-tooth defects: an in vitro study[J]. J Esthet Restor Dent, 2023, 35(1):262-269.
[2] Palantza E, Sykaras N, Zoidis P, et al.In vitro comparison of accuracy between conventional and digital impression using elastomeric materials and two intra-oral scanning devices[J]. J Esthet Restor Dent, 2024, 36(8):1179-1198.
[3] Carneiro Pereira AL, Bezerra de Medeiros AK, de Sousa Santos K, et al. Accuracy of CAD-CAM systems for removable partial denture framework fabrication: a systematic review[J]. J Prosthet Dent, 2021, 125(2):241-248.
[4] 金夏悦, 余润平, 花葳蕾, 等. 1 374例椅旁CAD/CAM全瓷修复体的类型及颜色调查[J]. 上海口腔医学, 2024, 33(2): 200-204.
[5] 张云涛. 临床口腔科学[M]. 上海:科学技术文献出版社, 2014: 108-110.
[6] 程磊, 柴丛娜, 陈庆勇, 等. 不同材质冠修复体在后牙牙体缺损美学修复治疗中的疗效评价[J]. 中国美容医学, 2022, 31(11): 157-160.
[7] 李允允, 江方方, 郑衍亮, 等. CAD/CAM高嵌体修复老年患者后牙牙体缺损的临床评价[J]. 实用口腔医学杂志, 2019, 35(4): 575-578.
[8] 乌玉红, 王海志, 齐长娥, 等. 数字化椅旁CAD/CAM技术对种植冠桥修复体边缘密合度的影响[J]. 临床与病理杂志, 2022, 42(9): 2200-2205.
[9] Lechte C, Hausdörfer T, Kanzow P, et al.Clinical performance of CAD-CAM partial-coverage restorations: experienced versus less-experienced operators[J]. J Prosthet Dent, 2022, 128(6): 1245-1251.
[10] Del Cisne Maldonado K, Espinoza JA, Astudillo DA, et al. Resistance of CAD/CAM composite resin and ceramic occlusal veneers to fatigue and fracture in worn posterior teeth: a systematic review[J]. Dent Med Probl, 2024, 61(3):417-426.
[11] 李晓飞, 李晶珊, 董文静, 等. 不同方式制作后牙种植单冠临床效果观察[J]. 实用口腔医学杂志, 2021, 37(5): 686-690.
[12] 陈丽荣, 梁学进, 杨凤英, 等. 数字化印模联合全瓷冠修复牙体缺损的临床疗效分析[J]. 上海口腔医学, 2022, 31(3): 313-317.
[13] 江帆, 周燕玲. 数字化椅旁CAD/CAM系统制作高嵌体修复后牙牙体缺损1100例的临床分析[J]. 临床口腔医学杂志, 2019, 35(10): 603-607.
[14] Schlenz MA, Fiege C, Schmidt A, et al.Microleakage of thin-walled monolithic zirconia and polymer-containing CAD-CAM crowns[J]. J Prosthet Dent, 2021, 125(2):316-322.
[15] Del Piñal M, Lopez-Suarez C, Bartolome JF, et al. Effect of cementation and aging on the marginal fit of veneered and monolithic zirconia and metal-ceramic CAD-CAM crowns[J]. J Prosthet Dent, 2021, 125(2):323.e1-323.e7.
[16] Watanabe H, Fellows C, An H.Digital technologies for restorative dentistry[J]. Dent Clin North Am, 2022, 66(4): 567-590.
[17] Turkyilmaz I, Benli M, Yun S.Evaluation of marginal and internal fit of lithium disilicate and zirconia all-ceramic CAD-CAM crowns using digital impressions: a systematic review[J]. Prim Dent J, 2023, 12(1):88-95.
[18] 贾妮, 梁晓芳, 马广周. 高嵌体与全瓷冠修复牙体缺损的美学效果及远期疗效对比[J]. 中国美容医学, 2024, 33(6): 144-148.
[19] Nassani MZ, Ibraheem S, Shamsy E, et al.A survey of dentists' perception of chair-side CAD/CAM technology[J]. Healthcare (Basel), 2021, 9(1):68.