title: Reduction of microleakage in class II composite resin restorations using retentive pins.
abstract: The effect on microleakage of Bondent parapulpal pins used in class II composite resin restorations was evaluated in vitro. Bulk and incremental packing and polymerization techniques were compared, using pins anchored at the gingival cavity walls. Evaluation of microleakage was carried out following cyclic load application and an extended thermocycling procedure by the assessment of dye penetration. The results showed that the use of pins at the gingival wall of class II composite resin restorations provided significantly improved marginal sealing. The procedure should, therefore, be regarded as an effective clinical practice.
authors.affiliation: Section of Operative Dentistry, Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Israel.
authors.forename: R
authors.initials: R
authors.lastname: Liberman
authors.forename: C
authors.initials: C
authors.lastname: Gorfil
authors.forename: A
authors.initials: A
authors.lastname: Ben-Amar
mesh_terms: D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003737:Dental Cavity Preparation / Q000145:classification*; D003763:Dental Leakage / Q000517:prevention & control*; D018772:Dental Marginal Adaptation; D003772:Dental Pins; D003793:Dental Restoration, Permanent / Q000379:methods; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D011108:Polymers / Q000737:chemistry; D019279:Resin Cements; D012394:Rosaniline Dyes; D013314:Stress, Mechanical; D013696:Temperature
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D011108:Polymers; D019279:Resin Cements; D012394:Rosaniline Dyes; C065770:Herculite XR