title: Effects of mechanical and thermal aging on microleakage of different fissure sealants.
abstract: The purpose of this study was to examine the microleakage of three different fissure sealants after they were aged by mechanical loading and thermocycling in vitro. To this end, a bonding agent (Prime & Bond NT) and three different fissure sealants (Clinpro, Helioseal F, Teethmate F1) were used, whereby microleakage was evaluated using a dye penetration method after mechanical loading and/or thermocycling. Sealant-treated teeth were allocated into four groups: mechanical loading (50,000 times), thermocycling (10,000 times), mechanical loading (50,000 times) + thermocycling (10,000 times), and one control group. For each fissure sealant, both experimental and control groups showed statistically significant differences in average microleakage score (p < 0.05). Further, for each fissure sealant, the highest average microleakage score was obtained in mechanical loading + thermocycling group. When comparison was done for each aging method, the average microleakage scores showed statistically significant differences among the three fissure sealants (p < 0.05). Based on the results of this study, it was also concluded that it is necessary to develop reliable in vitro test methods for dental materials.
authors.affiliation: Department of Pedodontics, Faculty of Dentistry, Ondokuz Mayis University, 55139 Kurupelit, Samsun, Turkey. ekoyuturk2000@yahoo.com
authors.forename: Alp Erdin
authors.initials: AE
authors.lastname: Koyuturk
authors.forename: Adem
authors.initials: A
authors.lastname: Kusgoz
authors.forename: Mustafa
authors.initials: M
authors.lastname: Ulker
authors.forename: Cemal
authors.initials: C
authors.lastname: Yeşilyurt
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003743:Dental Enamel / Q000648:ultrastructure; D003763:Dental Leakage / Q000145:classification*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D010756:Phosphoric Acids / Q000737:chemistry; D010895:Pit and Fissure Sealants / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry; D012394:Rosaniline Dyes; D016037:Single-Blind Method; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature
chemical_list: C500418:Clinpro Sealant; D004396:Coloring Agents; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D010756:Phosphoric Acids; D010895:Pit and Fissure Sealants; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D012394:Rosaniline Dyes; C099291:teethmate-FTM; C059908:Helioseal; C025485:basic fuchsin; C030242:phosphoric acid