Journal of Conservative Dentistry
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ARTICLE
Year : 2005  |  Volume : 8  |  Issue : 4  |  Page : 14-25

Effects of six in-office agents of desensitization on the permeability of dentin - An in-vitro hydraulic conductance study


Department of Conservative Dentistry & Endodontics, Meenakshi Animal Dental College & Hospitals, Maduravoyal, Chennai., India

Correspondence Address:
Martha Joshua
Department of Conservative Dentistry & Endodontics, Meenakshi Animal Dental College & Hospitals, Maduravoyal, Chennai.
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-0707.42593

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The objective of this in-vitro study was to evaluate the effects of six in-office agents of desensitization on the hydraulic conductance of human dentin by measuring the mean percentage reduction in permeability over a period of one month. The tested agents were Fluoride varnish (Fluorprotector),resin desensitizer ( Gluma desensitizer ), adhesive resin ( Gluma comfort bond ), laser (Nd: YAG Laser), fluoride iontophoresis (Electric pulp tester, for fluoride iontophoresis) and 3% Potassium oxalate(freshly prepared). Sixty non carious, intact human mandibular third molars were sectioned at mid coronal region and polished to obtain a 1mm thick disc which were divided into six groups. A split chamber device with fluid filtration apparatus was constructed for hydraulic conductance measurements. Permeability of dentin discs was measured at baseline that serves as a control and following the application of the various in-office agents, measurements was recorded post operatively, after 24 hrs, after I week and after 1 month. Mean percentage reduction in permeability was tabulated and statistically analyzed. The results of this study indicate that all the tested agents led to a decrease in dentin permeability Nd: YAG laser gave the highest reduction in permeability throughout the entire period of study followed by Gluma desensitizer Gluma comfort bond, Fluoride iontophoresis, and Fluor protector and 3% Potassium oxalate was the least effective.


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