Korean J Dent Mater.  2019 Jun;46(2):99-108. 10.14815/kjdm.2019.46.2.99.

The effects of deproteinization and primer treatment on microtensile bond strength of self-adhesive resin cement to dentin

Affiliations
  • 1Department of conservative dentistry, School of Dentistry, Pusan National University, Yangsan, Korea. jeongkil@pusan.ac.kr

Abstract

The purpose of this study was to evaluate the effects of deproteinization and an additional primer treatment on the microtensile bond strength of a newly developed self-adhesive resin cement to dentin. The occlusal dentin of extracted human third molars was randomly divided into four groups according to the surface treatment: a control (CON) with no treatment; applying a deproteinizing agent (DPT) (5% sodium hypochlorite); using a primer (PRI) (G-CEM ONE Adhesive enhancing primer, GC); and applying a deproteinizing agent and a primer (DPT-PRI). Composite resin blocks with a disk shape (diameter, 10 mm; height, 4 mm) were bonded to the treated dentin using a self-adhesive resin cement (G-CEM ONE, GC). The specimens were sectioned into sticks with a cross-section of 1 mm² and tested to failure in tension mode at a crosshead speed of 1 mm/min. All groups showed a significantly higher microtensile bond strength compared to CON (p<0.05). PRI showed the highest microtensile bond strength followed by DPT and DPT-PRI (p<0.05). No significant differences were observed between DPT and DPT-PRI (p>0.05). Within the limitations of this study, a deproteinizing agent or specific primer can enhance the microtensile bond strength of the self-adhesive resin cement to dentin. However, it is not recommended to use a primer in combination with the deproteinizing agents.

Keyword

Self-adhesive resin cements; Microtensile bond strength; Deproteinization; Sodium hypochlorite

MeSH Terms

Adhesives
Dentin*
Humans
Molar, Third
Resin Cements*
Sodium
Sodium Hypochlorite
Adhesives
Resin Cements
Sodium
Sodium Hypochlorite
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