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Published on: June 24, 2018
Clinical Evaluation of Two Distinct Materials for Implant-Supported Interim Fixed Partial Prostheses: An Original
D Sravanthi1, Sareen Duseja2, Manawar A Mansoor3
1Department of Prosthodontist and Crown and Bridge and Implantology, Meghna Institute of Dental Sciences, Nizamabad, Telangana, India.
Aim:
This study aimed to evaluate the clinical efficacy of posterior resin implant-supported fixed partial dentures (FPDs) made from two different computer-aided design and computer-aided manufacturing (CAD-CAM) materials: polymethylmethacrylate (PMMA) and polyoxymethylene (POM).
Materials And Methods:
Twenty-one patients received a total of 49 interim implant-supported FPDs. The same participant received PMMA and POM as part of the control and experimental groups, respectively. The restorations were evaluated 1 week, 3 months, and 6 months after placement. In addition, their functional wear and color stability were assessed. Nonparametric statistics (α = 0.05) were used to analyze the data.
Results:
The study found that PMMA outperformed POM in surface and color parameters, with more fractures occurring with internal conical connection implants. The color stability analysis showed ΔE*ab values of 7.18 for PMMA and 8.8 for POM, with no significant differences. After 6 months of operation, both materials showed a significant increase in wear, but no significant differences were found within the materials.
Conclusion:
The study found that PMMA interim implant-supported FPDs outperformed POM in surface and color parameters, while polymer posterior implant-supported FPDs with internal conical connection implants were more fracture-prone.
