Bond strength of denture teeth to denture base resins.
OBJECTIVE
The study examined the bond strength between 2 types of denture teeth and 3 denture base resins. The denture teeth were untreated, prepared with diatorics, or treated with dichloromethane, a solvent.


METHODS
Conventional denture teeth and cross-linked denture teeth were bonded to either a heat-cured denture base resin, a microwave-cured denture base resin, or a pour-type denture base resin. Compressive load was applied at 45 degrees on the palatal surface of each tooth until fracture.


RESULTS
Conventional resin teeth possessed higher bond strength than cross-linked denture teeth. The heat-cured denture base resin significantly surpassed the microwave-cured denture base resin in bond strength. Both materials were better than the pour-type resin. The application of dichloromethane resulted in a significantly better improvement in bond strength compared to the use of diatorics.


CONCLUSIONS
It is recommended that dichloromethane be applied on the denture teeth ridge-lap area prior to denture base processing.
Takahashi
Y
Y
Department of Prosthodontics, Fukuoka Dental College, Fukuoka, Japan.
Chai
J
J
Takahashi
T
T
Habu
T
T
D000180:Acrylic Resins / Q000737:chemistry*; D000704:Analysis of Variance; D019245:Compressive Strength; D003432:Cross-Linking Reagents / Q000737:chemistry; D001840:Dental Bonding; D003776:Dental Porcelain / Q000737:chemistry*; D003819:Denture Bases; D006358:Hot Temperature; D006801:Humans; D008422:Materials Testing; D008752:Methylene Chloride / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D008872:Microwaves; D019904:Polymethyl Methacrylate / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D014093:Tooth, Artificial
D000180:Acrylic Resins; D003432:Cross-Linking Reagents; D012997:Solvents; D003776:Dental Porcelain; D008752:Methylene Chloride; D019904:Polymethyl Methacrylate