The effect of etching technique on the retention of adhesively cemented prefabricated dowels.
OBJECTIVE
To determine if etching technique influences the bond strength of resin cement to root canal dentin.


METHODS
Fifty-five extracted teeth were endodontically treated, dowel space prepared, and divided into five groups. Each group was treated with different etchant consistencies: acid gel, semi-gel, low-viscosity gel, liquid, and a self-etching primer. After dowel cementation, four sections were removed from each root and a push-out test was performed.


RESULTS
Significant effects were found for etching procedure and for location within the root canal. The apical segment produced the lowest bond strength. Self-etching primer showed the highest bond strength.


CONCLUSIONS
The consistency of etchant material influenced the bond strength of a prefabricated dowel in the canal.
Potesta
Fiorella L
FL
UAB-Prosthodontics, 1919 Seventh Ave. S, R 606, SDB, Birmingham, AL 35294, USA. fpotestak@aol.com
Broome
James C
JC
O'Neal
Sandra J
SJ
Givan
Daniel A
DA
Ramp
Lance C
LC
D000134:Acid Etching, Dental / Q000379:methods*; D017609:Barium Compounds / Q000737:chemistry; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002484:Cementation / Q000379:methods; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D017268:Dental Prosthesis Retention; D003786:Dental Pulp Cavity / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D063065:Organophosphonates / Q000737:chemistry; D010756:Phosphoric Acids / Q000737:chemistry; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry*; D018915:Root Canal Preparation / Q000379:methods; D012822:Silicon Dioxide / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D019227:Tooth Apex / Q000648:ultrastructure; D019553:Tooth, Nonvital / Q000628:therapy; D014783:Viscosity
C121035:Aeliteflo; D017609:Barium Compounds; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C499809:Hi-X Cement; D008689:Methacrylates; D063065:Organophosphonates; C438843:Panavia-Fluoro; D010756:Phosphoric Acids; D019279:Resin Cements; C454540:Scotchbond etchant; C100742:All-Bond 2; D017438:Bisphenol A-Glycidyl Methacrylate; D012822:Silicon Dioxide; C030242:phosphoric acid