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Volume 23 , Issue 5
September/October 2010

Pages 406–409

The Quasi–Three-Dimensional Marginal Leakage of Full-Coverage Crowns: Resin Coating Versus Sodium Hypochlorite Treatment

Daizo Kawahara, DDS/Atsushi Mine, DDS, PhD/Jan De Munck, DDS, PhD/Takuo Kuboki, DDS, PhD/ Yasuhiro Yoshida, DDS, PhD/Kazuomi Suzuki, DDS, PhD/Bart Van Meerbeek, DDS, PhD/Hirofumi Yatani, DDS, PhD

PMID: 20859554

This study compared the effects of various surface treatments and techniques on the marginal leakage of full-coverage crowns using a quasi–three-dimensional evaluation. Crowns were cast using a gold-silver-palladium alloy by means of the lost-wax technique. Twenty-eight recently extracted human molars were divided randomly into four groups according to surface treatment before crown cementation: (1) no pretreatment (negative control), (2) primer (positive control), (3) resin coating and primer, and (4) phosphoric acid, sodium hypochlorite, and primer. All specimens were cemented with composite cement. The lowest marginal leakage was observed in group 4. Variation in marginal leakage between specimens originating from the same tooth was observed. Int J Prosthodont 2010;23:406–409.

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