Bond strength of ceramic brackets with various bonding systems.
The purpose of this investigation was to determine the shear and tensile bond strengths of various ceramic and ceramic-filled brackets in combination with commonly used bonding systems. One monocrystalline, two polycrystalline and one ceramic-filled plastic bracket types were tested in combination with one light-cured and two chemically-cured bonding systems. Bonding procedures were performed on properly prepared human teeth. Shear and tensile tests were performed on an Instron test machine. The shear bond strength of the mono- and polycrystalline ceramic brackets was not affected by the bonding system. There was a difference among bonding systems used with the ceramic-filled plastic bracket. Ceramic-filled plastic and polycrystalline ceramic brackets exhibited the greatest resistance to tensile force, while monocrystalline brackets showed the highest propensity for tensile fracture of the wings.
Chaconas
S J
SJ
University of California, School of Dentistry, Section of Orthodontics, Los Angeles 90024.
Caputo
A A
AA
Niu
G S
GS
D000134:Acid Etching, Dental; D000537:Aluminum Oxide; D002516:Ceramics; D001840:Dental Bonding; D003799:Dental Stress Analysis; D006801:Humans; D009967:Orthodontic Appliances; D010969:Plastics; D012117:Resins, Synthetic / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D013997:Time Factors; D014070:Tooth
D010969:Plastics; D012117:Resins, Synthetic; D000537:Aluminum Oxide