Thirty-three-year clinical performance of premolar indirect composite restorations seated with 4-META-MAC 10 combined adhesive system

抄録

Indirect composite restorations made of highly loaded light and heat polymerized material were applied to the mandibular premolars of a 23-year-old female patient. Enamel cavity margins were etched with phosphoric acid. Dentin surfaces to be bonded were treated with ferric chloride-citric acid solution, and coated with tri-n-butylborane (TBB)-initiated 4-META resin. Inner surfaces of the inlays were treated with phosphoric acid. The restorations were then seated with dual-polymerized composite luting agents. Although cavosurface discoloration, wear, loss of marginal integrity, and change in surface texture were detected, both restorations are still functioning after 33 years. Restorations made with such system is applicable for premolar class II cavities and have a favorable prognosis.