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Hydrostatic pulpal pressure effect upon microleakage.
To evaluate if hydrostatic pulpal pressure plays a role in reducing microleakage.
Uniform Class 5 preparations were accomplished on human molars with one margin on root dentin. Prepared teeth were randomly placed in one of three groups: (1) Hydrostatic pressure simulation at 20 cm pulpal pressure; (2) Hydrostatic pressure simulation but no pressure applied (positive control); and (3) Conventional microleakage method. Specimens were subjected to 24 hours methylene blue dye, sectioned, and microleakage assessed as a function of microleakage length versus entire preparation wall length using a traveling microscope.
Hydrostatic pressure specimens demonstrated less gingival wall microleakage than the control groups while no difference was found between occlusal preparation walls.
Dental Cavity Preparation
Dental Restoration, Permanent
Pub Type(s)Comparative Study
Randomized Controlled Trial