Two-year clinical outcomes of three-dimensional printed complete dentures: A prospective multicenter study of survival and patient-reported outcomes.

Authors

Maiko Iwaki, Yo Akiyama, Mariko Mukai, Bohan Tang, Keisuke Kohri, Mitsuki Masumoto, Shogo Shibata, Mai Shirai, Hidemasa Shimpo, Chikahiro Ohkubo, Atsushi Takaichi, Shin-Ichi Usugi, Manabu Kanazawa

Published in

Journal of dentistry. Pages 107110. Oct 13, 2026. Epub Oct 13, 2026.

Abstract

To evaluate 2-year cumulative success and survival rates, changes in oral health-related quality of life (OHRQoL), and patient satisfaction among edentulous patients who continued to wear complete dentures fabricated by three-dimensional (3D) printing (CAD-3DPs) after a crossover randomized controlled trial (RCT).
Eighteen edentulous patients (36 dentures) wearing maxillary and mandibular CAD-3DPs after the RCT were prospectively followed. Events were denture fracture, repair, relining, or occlusal reconstruction (success rate) and discontinuation of use (survival rate). OHRQoL (total and seven subdomain scores) and patient satisfaction (visual analogue scale) were assessed at RCT conclusion (T0) and every 6 months up to 24 months (T4), and compared with T0.
Twenty-four dentures (12 patients) completed 2-year observation. In the success analysis, the only events were fractures of four maxillary dentures, all occurring within the first year; in the survival analysis, four dentures (two patients) were discontinued after maxillary fracture. Two-year cumulative success and survival rates were 88% and 87%, respectively. Palatal thickness of fractured dentures had been set at 2.0-2.1 mm, at the lower end of the design range (2.0-2.5 mm). No significant changes from T0 were detected in the OHRQoL total score, any of its seven subdomains, or patient satisfaction during follow-up.
CAD-3DPs showed high 2-year success and survival rates, with maintained OHRQoL and patient satisfaction, and can be an effective prosthetic treatment option for edentulous patients.
Two-year prospective data support the clinical applicability of 3D-printed complete dentures. All fractures occurred in maxillary dentures with a thin palatal thickness setting, suggesting that attention to the denture design may help prevent fracture.
UMIN000037947.

PMID:
42869411
Bibliographic data and abstract were imported from PubMed on 14 Oct 2026.

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