Influence of surface treatments on the shear bond strength of Panavia 21 to a Type III gold alloy.
Cylinders of Type III gold alloy were sandblasted with either: 50 micron Aluminium Oxide particles (Group 1); CoJet Sand (Group 2); the CoJet System - CoJet Sand followed by application of silane primer (Group 3). Shear testing was undertaken following apposition of Panavia 21 resin. Mean shear bond strengths (+/- standard deviation) were Group 1, 32.9 (+/-18.2) MPa; Group 2, 26.5 (+/-10.8) MPa and Group 3, 45.6 (+/- 25.8) MPa. There was no statistically difference between Group 1 and 2; and between group 1 and 3. However, there was a significant; difference between Group 2 and 3 p < 0.05). While the CoJet System achieved the highest mean shear bond strength it conveyed no statistical advantage over the traditional method of sandblasting with aluminium oxide.
Aziz
Azwatee A
AA
UCL Eastman Dental Institute, University College London.
Tredwin
Christopher J
CJ
Stokes
Alastair
A
Gill
Daljit S
DS
Moles
David R
DR
D000537:Aluminum Oxide; D000704:Analysis of Variance; D001840:Dental Bonding; D003799:Dental Stress Analysis; D006047:Gold Alloys; D008422:Materials Testing; D010710:Phosphates; D019279:Resin Cements; D033081:Shear Strength; D012821:Silanes; D012822:Silicon Dioxide; D018709:Statistics, Nonparametric; D013499:Surface Properties
D006047:Gold Alloys; C093719:Panavia TPN-S; D010710:Phosphates; D019279:Resin Cements; D012821:Silanes; D012822:Silicon Dioxide; D000537:Aluminum Oxide