Bond strength of 4 sealants using conventional etch and a self-etching primer.
OBJECTIVE
The purpose of this study was to determine and compare the shear bond strength of 4 fissure sealant systems (Dyract Seal, Concise, Visio-Seal, Helioseal) to enamel using conventional etch and self-etching primer (Prompt-L-Pop).


METHODS
Fifty-six newly extracted noncarious first permanent molars were used and embedded in a Teflon mold (3-mm height, 3-mm internal diameter). Mesial surfaces were exposed to a flattened area of enamel and then dried and washed. The teeth were divided into 8 groups, each consisting of 7 specimens stored in 37 degrees C distilled water for 24 hours. Then specimens were tested in a shear mode (Instron) at a crosshead speed of 0.5 mm/minute. The mean and standard deviations were subjected to an analysis of variance.


RESULTS
The average bond strengths using Prompt-L-Pop were: (1) Dyract Seal=20.61 MPa; (2) Concise=23.42 MPa; (3) Visio-Seal=2.94 MPa; and (4) Helioseal=11.83 MPa. These values were higher than and statistically different from those of Dyract Seal (10.18 MPa) and Concise (9.17 MPa) when the conventional etch system was used (student t test, P<.001).


CONCLUSIONS
The bond strengths of Prompt-L-Pop, in conjunction with Dyract Seal and Concise fissure sealant materials, exceeded those of conventional etch.
Al-Sarheed
Maha
M
Department of Preventive Dentistry, Division of Pediatric Dentistry, King Saud University, Riyadh, Saudi Arabia. alsarheedm@yahoo.com
D000134:Acid Etching, Dental / Q000379:methods*; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D020770:Compomers / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003743:Dental Enamel / Q000648:ultrastructure; D003799:Dental Stress Analysis / Q000295:instrumentation; D004852:Epoxy Compounds / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D010756:Phosphoric Acids / Q000737:chemistry; D010895:Pit and Fissure Sealants / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry*; D033081:Shear Strength; D013314:Stress, Mechanical
D020770:Compomers; D003188:Composite Resins; D004852:Epoxy Compounds; D008689:Methacrylates; D010756:Phosphoric Acids; D010895:Pit and Fissure Sealants; C408584:Prompt L-Pop; D019279:Resin Cements; C407622:Visio-Seal; C496147:dyract seal; C059908:Helioseal; D017438:Bisphenol A-Glycidyl Methacrylate; C030242:phosphoric acid