title: Microleakage in facial and lingual Class 5 composite restorations: a comparison.
abstract: The purpose of this in vitro study was to determine if there is a difference in microleakage between facial and lingual enamel and cementum using two different evaluation techniques. Class 5 preparations were made in 50 teeth on the facial and lingual tooth surfaces and restored using dentin bonding and composite resin. The teeth were thermocycled, silver nitrate stained, and longitudinally sectioned into mesial and distal halves through each restoration. The mesial half was scored using a rank order system. A Kruskal-Wallis one-way ANOVA was performed. The distal half was scored by measurement, and a two-sample t-test was performed. There were no statistically significant differences (P > or = 0.05) in microleakage between facial and lingual tooth enamel or cementum surfaces using either measurement technique.
authors.affiliation: Baltimore College of Dental Surgery, University of Maryland at Baltimore, Dental School, MD 21202, USA.
authors.forename: D M
authors.initials: DM
authors.lastname: Barnes
authors.forename: N J
authors.initials: NJ
authors.lastname: McDonald
authors.forename: V P
authors.initials: VP
authors.lastname: Thompson
authors.forename: L W
authors.initials: LW
authors.lastname: Blank
authors.forename: P J
authors.initials: PJ
authors.lastname: Shires
mesh_terms: D000704:Analysis of Variance; D003188:Composite Resins; D003739:Dental Cementum / Q000473:pathology; D003743:Dental Enamel / Q000473:pathology; D003763:Dental Leakage; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents; D005069:Evaluation Studies as Topic; D019279:Resin Cements; D018709:Statistics, Nonparametric
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D019279:Resin Cements; C073466:Prisma APH