Microleakage of Class V composite, resin sandwich, and resin-modified glass ionomers.
OBJECTIVE
To evaluate in vitro the extent of microleakage of Class V cavities restored with composite, and resin-modified glass ionomers.


METHODS
Class V cavities were prepared in 35 extracted teeth and randomly divided into seven groups of five teeth each (10 restorations in each group). Group 1: Scotchbond Multi-Purpose Adhesive (SMP) and restored with Z100 resin placed with an incremental technique, Group 2: Lined with GC Fuji lining LC and restored with SMP and Z100. Group 3: Based with Fuji II light-cured glass ionomer restorative and restored with SMP and Z100. Group 4: Lined with Vitrebond and restored with SMP and Z100. Group 5: Based with Vitremer and restored with SMP and Z100. Group 6: Restored with Fuji II LC. Group 7: Restored with Vitremer. The teeth were subjected to thermocycling, stained with silver nitrate, then longitudinally sectioned. Dye penetration at the tissue/restoration interface was scored based upon the extent and location of the precipitated silver.


RESULTS
All groups demonstrated minimal or no microleakage at both the enamel and gingival sites.
Trushkowsky
R D
RD
Staten Island University Hospital, New York, USA.
Gwinnett
A J
AJ
D003188:Composite Resins; D003736:Dental Cavity Lining; D003763:Dental Leakage / Q000517:prevention & control*; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D019279:Resin Cements; D012117:Resins, Synthetic; D012822:Silicon Dioxide; D018709:Statistics, Nonparametric; D015040:Zirconium
D003188:Composite Resins; D017220:Dentin-Bonding Agents; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012117:Resins, Synthetic; C084018:Scotchbond Multi-Purpose; C084550:Vitremer; C083568:Z100 composite resin; C067790:Vitrabond; D012822:Silicon Dioxide; D015040:Zirconium