Temperature and humidity: significant factors in resin/enamel bonding.
This study examined the effects of temperature and humidity variations on the bond strength of sand blasted Ni-Cr-Mo alloy (Talladium) cylinders cemented to etched bovine enamel using composite resin (Panavia Ex). Bonding was carried out in a humidity chamber under varying combinations of temperature (24 degrees C and 37 degrees C), and relative humidity (32% and 85%). After storage in water at 37 degrees C for 24 hours all specimens were shear tested to failure. The results showed that bond failure was consistently cohesive with resin shear strength at 37 degrees C being significantly reduced by high humidity. At 24 degrees C, resin shear strength was not significantly affected by humidity variations.
Kells
B E
BE
Division of Restorative Dentistry, School of Dentistry, Belfast, Northern Ireland, UK.
Kennedy
J G
JG
D000704:Analysis of Variance; D000818:Animals; D002417:Cattle; D002484:Cementation; D002858:Chromium Alloys; D003188:Composite Resins; D001840:Dental Bonding; D003743:Dental Enamel; D006813:Humidity; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010710:Phosphates; D019279:Resin Cements; D013696:Temperature; D014867:Water
D002858:Chromium Alloys; D003188:Composite Resins; D010710:Phosphates; D019279:Resin Cements; D014867:Water; C052304:Panavia EX