# Comparison of Materials in Implant‐Supported Partial Fixed Dental Prostheses: A Randomized Controlled Trial

## TL;DR

A study compared dental implant prostheses made of different materials and found all had high survival rates after one year, with monolithic zirconia showing no chipping.

## Contribution

The study provides empirical evidence on the clinical performance of three materials for implant-supported dental prostheses over one year.

## Key findings

- Monolithic zirconia showed 100% prosthetic survival with no chipping.
- Titanium-ceramic and veneered zirconia had 95% survival, with chipping as a common issue.
- No significant differences in marginal bone level changes were observed between groups.

## Abstract

This randomized controlled trial compared the clinical performances after 1 year of implant‐supported, partial fixed dental prostheses (FDPs) fabricated from monolithic high‐translucency zirconia, veneered high‐translucency zirconia, and titanium‐ceramic.

Forty‐nine adult participants who required posterior implant‐supported FDPs were randomly assigned to three groups: monolithic zirconia (MZ, n = 23 FDPs), veneered zirconia (VZ, n = 20 FDPs), and veneered titanium (TC; n = 20 FDPs). Clinical and radiographical evaluations were performed at the 1‐year follow‐up, assessing prosthetic and implant survival, biological and technical complications, and marginal bone levels.

A total of 59 FDPs were examined at follow‐up (MZ, n = 21; VZ, n = 20; TC, n = 18). The overall prosthetic survival rate was 96.8%. One FDP in the VZ group failed due to a framework fracture, and one FDP in the TC group was replaced due to extensive chipping. Survival rates were 100% for MZ, 95% for VZ, and 95% for TC. Technical complications occurred in 6.8% of the FDPs, with chipping being the most frequent complication in the TC (11.1%) and VZ (5.0%) groups. Screw loosening occurred in one MZ FDP (4.8%). No chipping was observed in the MZ group. The overall implant survival rate was 99.2%. Biological complications were minimal, with peri‐implant mucositis observed in 8.3% of the FDPs. There were no statistically significant differences in marginal bone level changes between the groups.

Short‐span, implant‐supported, partial FDPs composed of monolithic zirconia, veneered zirconia, and titanium‐ceramic demonstrate high clinical survival rates at the 1‐year follow‐up in posterior regions. Longer‐term studies are needed to confirm the long‐term durability and clinical performance levels of these FDPs.

Trial Registration:
https://clinicaltrials.gov/study/NCT05296291.