Work

Success and survival of full-arch implant-supported monolithic zirconia fixed dental prostheses fabricated using a digital workflow: A 2-year prospective cohort study

Year: 2025

Type: article

Abstract: OBJECTIVES: To assess the 2-year success and survival rates of full-arch implant-supported monolithic zirconia fixed dental prostheses (FDPs) and identify factors influencing peri‑implant bone loss. METHODS: 20 edentulous arches were restored with full-arch screw-retained monolithic zirconia FDPs supported by four implants using a fully digital workflow. Prosthesis and implant success and survival rates were recorded. Additionally, marginal bone level (MBL) changes were assessed using periapical radiographs at provisional and definitive FDP delivery, and at 6, 12, and 24 months. Linear mixed models were applied to identify factors affecting MBL. RESULTS: Prosthesis success and survival rates were 100 %. Implant success rates were 100 % during the first year, decreasing slightly to 90 % at 12 months and 88.75 % at 24 months, while survival rates remained 100 %. Significantly greater MBL (p < 0.05) was observed in bone types 2-4 (Misch, 1988) compared with type 1, and in sites without guided bone regeneration (GBR). Lower MBL was associated with removable antagonists, wider and longer implants, and anterior implant positions. No significant differences in MBL were found between the early and later follow-up periods. CONCLUSIONS: Full-arch screw-retained monolithic zirconia FDPs demonstrated high success during the 2-year follow-up period. MBL showed no statistically significant longitudinal changes, although subgroup analysis suggested associations with bone density, GBR, removable antagonists, and implant size. CLINICAL SIGNIFICANCE: Digitally fabricated full-arch monolithic zirconia FDPs may represent a promising rehabilitation option for edentulous patients, although the results highlight the need for careful case selection and further long-term follow-up.

Source: Journal of Dentistry

DOI: 10.1016/j.jdent.2025.106256

Authors: Vygandas Rutkūnas, Daniel Kuleš, Mykolas Akulauskas, Liudas Auškalnis, Ieva Gendvilienė

Institutions: Vilnius University, Kaunas University of Technology

Language: English

Topic: Dental Implant Techniques and Outcomes

Subfield: Oral Surgery

Field: Dentistry

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $4,160