Examining tooth flexure effects on cervical restorations: a two-year clinical study.
This study evaluated the clinical performance of dentinal adhesives in seven various material/technique combinations. No statistically significant differences were observed among the restorative combinations, or among technique variables after two years in terms of retention, sensitivity or USPHS categories. However, other factors related to tooth flexure--such as occlusal stress, patient age, restorative material and restoration location--showed statistically significant associations with retention failures. These results support a tooth flexural theory of restoration retention.
Heymann
H O
HO
Department of Operative Dentistry, School of Dentistry, University of North Carolina, Chapel Hill 27599-7450.
Sturdevant
J R
JR
Bayne
S
S
Wilder
A D
AD
Sluder
T B
TB
Brunson
W D
WD
D000134:Acid Etching, Dental; D000269:Adhesives; D000328:Adult; D000367:Age Factors; D000368:Aged; D017438:Bisphenol A-Glycidyl Methacrylate; D002484:Cementation; D016009:Chi-Square Distribution; D003188:Composite Resins; D001840:Dental Bonding; D003766:Dental Occlusion; D003793:Dental Restoration, Permanent; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents; D004548:Elasticity; D006801:Humans; D008875:Middle Aged; D011897:Random Allocation; D019279:Resin Cements; D012822:Silicon Dioxide; D013718:Tensile Strength
D000269:Adhesives; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D019279:Resin Cements; C062652:Prisma Universal Bond; C036885:prisma-fil; D017438:Bisphenol A-Glycidyl Methacrylate; D012822:Silicon Dioxide; C062650:Prismafine