PMID: 8887797Sep 1, 1996Paper

A pilot study of lactic acid as an enamel and dentin conditioner for dentin-bonding agent development

The Journal of Prosthetic Dentistry
M F AyadA M Farag

Abstract

The purpose of this pilot study was to determine how lactic acid solution at various concentrations and etching times affected prepared human enamel and dentin surfaces and to assess whether it could be used in place of phosphoric or maleic acid as an etchant. The occlusal surfaces of extracted molar teeth were ground wet with 600-grit silicon carbide paper and treated with various aqueous solutions of lactic acid. Random samples were prepared for observation by scanning electron microscopy. The rest were used to determine shear bond strength of bonded dental composite cylinders. The micrographs revealed that lactic acid dissolved the smear layer with various degrees of etching and demineralization. The degree of smear layer and matrix removal was proportional to the concentration of the acid and the length of application time. A 20% lactic acid concentration applied for 10 seconds produced a clearly etched surface with minimal demineralization. A 30% concentration not only removed the smear layer and enlarged the dentin tubule orifices but also appeared to affect the collagen matrix. The shear bond strength to enamel treated with 50% lactic acid (17.5 +/- 1.5 MPa) and All-Bond 2 etchant (18.9 +/- 1.3 MPa) were not significantl...Continue Reading

References

Oct 1, 1988·Dental Materials : Official Publication of the Academy of Dental Materials·R L Blosser, R L Bowen
Dec 1, 1986·Dental Materials : Official Publication of the Academy of Dental Materials·M Komatsu, W Finger
Aug 1, 1981·Oral Surgery, Oral Medicine, and Oral Pathology·L B GoldmanP S Lin

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Citations

Jun 2, 2011·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Abdulhamaid A Maghrabi
Dec 8, 2004·The Journal of Prosthetic Dentistry·Mohamed F Ayad
Dec 28, 1999·The Journal of Asthma : Official Journal of the Association for the Care of Asthma·P J DautelM M Sockrider
Apr 12, 2014·Operative Dentistry·A D LoguercioA Reis
Feb 18, 2011·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Mohamed F AyadStephen F Rosenstiel

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