Two-year follow-up study of Procera-ceramic fixed partial dentures

Area of Science:

• Dental Materials Science
• Prosthodontics
• Biomaterials Engineering

Background:

• Fixed partial dentures (FPDs) are crucial for restoring function and aesthetics.
• Evaluating novel materials and fabrication methods for FPDs is essential for improving long-term clinical outcomes.
• Machine-fabricated titanium with porcelain veneer represents a modern approach to FPD construction.

Purpose of the Study:

• To assess the clinical acceptability and long-term performance of machine-fabricated titanium FPDs veneered with low-temperature fused porcelain.
• To compare the outcomes of these novel FPDs against established treatment modalities.

Main Methods:

• A prospective study involving 37 machine-fabricated titanium FPDs (151 units) in 25 patients.
• Clinical and radiologic examinations were performed at baseline, 1 year, and 2 years post-insertion.
• The California Dental Association quality evaluation system was utilized to assess marginal integrity, surface, and color.

Main Results:

• After 2 years, 123 units remained; 28 units were lost due to various complications (dropout, fracture, caries, periodontitis).
• Marginal integrity showed a decline from baseline, with 4 'not acceptable' ratings at 2 years, which were corrected.
• Surface and color ratings remained acceptable for most units, though some degradation was noted; bleeding index increased.

Conclusions:

• Machine-fabricated titanium FPDs (Procera method) are an acceptable treatment option for up to 2 years.
• These dentures serve as a viable alternative to traditional high-noble alloy-based FPDs.
• Further long-term studies are warranted to fully evaluate durability and patient satisfaction.