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CC BY 4.0 · Eur J Dent 2025; 19(04): 903-918
DOI: 10.1055/s-0045-1804528
Review Article

Assessing Precision in All-Ceramic Fixed Restorations: Unveiling the Marginal Fit Through Digital and Traditional Impressions—A Comprehensive Systematic Review and Meta-Analysis

Authors

  • Waleed M. S. Alqahtani

    1   Department of Prosthetic Dentistry, College of Dentistry, King Khalid University, Abha, Saudi Arabia

  • Salah A. Yousief 

    2   Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia
    3   Department of Crown and Bridge, Faculty of Oral and Dental Medicine, Al-Azhar University, Assiut Branch, Cairo, Egypt

  • Amir Mohidin R. Demachkia 

    4   Department of Dental Materials and Prosthodontics, São Paulo State University (UNESP), São José dos Campos, Brazil

  • Mohidin R. Demachkia

    5   Private Clinic, Lasting Smile, Riyadh, Saudi Arabia

  • Ali Barakat

    2   Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia

  • Mohiddin R. Dimashkieh

    2   Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia

  • Mahmoud Abdallah M. Mekkey

    6   Fixed Prosthodontics Department, Faculty of Oral and Dental Medicine, South Valley University, Qena, Egypt

  • Ahmed Mohammed Sleem Abdelglel

    7   Deprtment of Fixed Prosthodontics, Faculty of Dental Medicine, Al-Azhar University, Assuit Branch, Cairo, Egypt

  • Ahmed S. Waly

    8   Division of Pediatric Dentistry and Dental Public Health, Department of Pediatric Dentistry, Faculty of Dentistry, Al-Azhar University, Assiut, Egypt

  • Rawana Mohammed Saieed Bamanie

    9   General Dentist, KSA

  • Dalal Abdulaziz Alnafisah

    10   Dentist Resident, Ministry of Health, KSA

Funding This research was funded by the General Directorate of Scientific Research & Innovation, Dar Al Uloom University, through the Scientific Publishing Funding Program.
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Abstract

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], p-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 (I 2 = 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.

Keywords

marginal fit - restoration - ceramic - digital


Publikationsverlauf

Artikel online veröffentlicht:
02. Mai 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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