Alqahtani Waleed M S, Yousief Salah A, Demachkia Amir Mohidin R, Demachkia Mohidin R, Barakat Ali, Dimashkieh Mohiddin R, Mekkey Mahmoud Abdallah M, Abdelglel Ahmed Mohammed Sleem, Waly Ahmed S, Bamanie Rawana Mohammed Saieed, Alnafisah Dalal Abdulaziz
Department of Prosthetic Dentistry, College of Dentistry, King Khalid University, Abha, Saudi Arabia.
Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia.
Eur J Dent. 2025 Oct;19(4):903-918. doi: 10.1055/s-0045-1804528. Epub 2025 May 2.
The marginal fit of all-ceramic fixed restorations is critical to long-term success. This comprehensive study and meta-analysis assessed the marginal fit of restorations manufactured using digital versus conventional impression procedures. We conducted a comprehensive search of electronic databases such as PubMed, Cochrane CENTRAL, Web of Science, and Scopus for publications published up to 2023. Eligible papers comparing the marginal fit of all-ceramic permanent restorations made using digital and conventional impressions were considered. A total of 19 studies met the inclusion criteria. The pooled analysis revealed that restorations fabricated from digital impressions exhibited a significantly better marginal fit than those from conventional impressions and showed a mean marginal gap of -13.76 µm (95% confidence interval: [-24.77, -2.76], -value = 0.01). Subgroup analysis by type of digital impression system demonstrated consistent superiority of zironica material over other ones. However, high heterogeneity was observed among the included studies ( = 90.74%). Digital impression restorations show superior marginal fit compared with conventional impressions, but high heterogeneity requires cautious interpretation and further well-designed studies to validate results.
全瓷固定修复体的边缘适合性对长期成功至关重要。这项全面的研究和荟萃分析评估了使用数字印模程序与传统印模程序制作的修复体的边缘适合性。我们对PubMed、Cochrane CENTRAL、Web of Science和Scopus等电子数据库进行了全面检索，以查找截至2023年发表的文献。纳入比较使用数字印模和传统印模制作的全瓷永久修复体边缘适合性的合格论文。共有19项研究符合纳入标准。汇总分析显示，数字印模制作的修复体边缘适合性明显优于传统印模制作的修复体，平均边缘间隙为-13.76µm（95%置信区间：[-24.77, -2.76]，P值 = 0.01）。按数字印模系统类型进行的亚组分析表明，氧化锆材料始终优于其他材料。然而，纳入的研究之间观察到高度异质性（I² = 90.74%）。与传统印模相比，数字印模修复体显示出更好的边缘适合性，但高度异质性需要谨慎解释，需要进一步设计良好的研究来验证结果。
