A nine-year clinical case study of a resin-bonded fixed partial denture seated on the maxillary anterior teeth

作者：Tanoue Naomi^*; Nagano Kiyoshi; Sawase Takashi; Matsumura Hideo

来源：Journal of Prosthodontic Research, 2010, 54(3): 143-146.

DOI：10.1016/j.jpor.2009.12.005

• Abutment tooth
• Edge fracture
• Noble metal
• Resin-bonded fixed partial denture
• Thiol

Patient: This report describes the longevity of a resin-bonded fixed partial denture (RBFPD). This denture was seated on the maxillary anterior teeth with minimal tooth preparation. The RBFPD was cast from a silver-palladium alloy (Castwell M.C. 12), and the pontic was veneered with an indirect composite material (Estenia). The retainers were primed with a metal conditioner (V-Primer) and seated with a tri-n-butylborane initiated adhesive resin (Super-Bond C&B). After an observation period of eight years, a fracture occurred in the incisal edge of the central incisor abutment. The fractured area was restored with light-polymerizing composite resin and the anterior guidance was re-adjusted.
Discussion: RBFPD abutment teeth with deep vertical overlap should be carefully prepared to avoid abutment tooth fracture.
Conclusion: The clinical performance of the RBFPD made from a silver-palladium-copper-gold alloy was sufficient when seated with tri-nbutylborane initiated adhesive resin after surface modification using vinyl-thiol primer.
Clinical significance: The use of vinyl-thiol primer and tri-n-butylborane initiated adhesive resin is a clinically reliable bonding system for seating resin-bonded fixed partial denture (RBFPD) made from a silver-palladium-copper-gold alloy. The RBFPD, based on a reliable bonding system, can clinically function for a long time, even if the vertical overlap of the abutment teeth is excessive.

• 出版日期2010-7