Hydrolytic stability of three-step etch-and-rinse adhesives in occlusal class-I cavities.

Abstract

OBJECTIVES:

A dental adhesive without small and hydrophilic monomers such as 2-hydroxyethyl methacrylate (HEMA) and triethylene glycol dimethacrylate (TEGDMA) would be beneficial in order to avoid contact allergies. However, these monomers are important to increase infiltration and polymerization of the adhesive. Therefore, the purpose of this study was to evaluate the bonding effectiveness and bond durability of a more hydrophobic and biocompatible adhesive as compared to a conventional three-step etch-and-rinse adhesive.

METHODS:

Sixteen non-carious human third molars were used to determine the micro-tensile bond strength testing (μTBS) and interfacial ultrastructure by transmission electron microscopy (TEM) of the more hydrophobic cmf adhesive system (Saremco) adhesive as compared to the control OptiBond FL (Kerr).

RESULTS:

The more hydrophobic and biocompatible three-step etch-and-rinse adhesive was able to produce a reasonable short-time bonding effectiveness. In the long term, the collagen fibrils in the hybrid layer were not effectively protected and were prone to hydrolytic degradation. As a result, long-term bonding effectiveness of this novel adhesive was very low.

CONCLUSIONS:

Application of a more hydrophobic adhesive without altering the application procedure considerably results in a reduced durability of the created bond

CLINICAL RELEVANCE:

Omitting small and hydrophilic components from the adhesive formulation may impair the durability of your composite restoration.

• Authors: Jan De Munck, Atsushi Mine, Marcio Vivan Cardoso, Kirsten L Van Landuyt, Anne-Katrin Lührs, André Poitevin, Masao Hanabusa, Takuo Kuboki, Bart Van Meerbeek
• Journal: Clinical oral investigations (Clin Oral Investig) Vol. 17 Issue 8 Pg. 1911-8 (Nov 2013) ISSN: 1436-3771 [Electronic] Germany
• PMID: 23197284 (Publication Type: Journal Article)

Chemical References

• Dental Cements

Topics

• Acid Etching, Dental (methods)
• Dental Bonding
• Dental Caries (therapy)
• Dental Cements
• Humans
• Hydrolysis
• Malocclusion, Angle Class I (therapy)
• Microscopy, Electron, Transmission
• Tensile Strength