Abstract

Purpose: The purpose of this study was to evaluate the possible microleakage found in two groups of sealants; a group bonded with a dentin bonding agent (DBA), and a group bonded without a DBA after exposure to a variety of topical fluorides.

Materials and Methods: Extracted, human molars were placed into 8 groups. Half of the groups contained sealants that were bonded with a DBA and the other remaining groups of sealants were bonded without a DBA. There were two control groups, one that had sealants bonded with a DBA and the other had sealants bonded without a DBA, but neither group was exposed to the topical fluorides. The remaining six sealant groups were exposed to one of the following topical fluorides; acidulated phosphate fluoride (APE), neutral sodium fluoride (NaF), or fluoride varnish. After exposure to the topical fluorides the sealant groups were thermal cycled, and then once again exposed to the topical fluorides before being thermal cycled a second time. The teeth were sealed off with nail polish, and then exposed to a 0.5% fuschin dye bath for 24 hours. The teeth were then sectioned and the remaining crowns were cut into sections with a diamond blade. The sections were analyzed with a microscope and assigned scores, depending on the amount of leakage. The Kruskal-Wallis contingency table at the significance level of α = 0.05 was used to perform the statistical analysis among the various groups.

Results: There was no statistically significant difference in the amount of microleakage among the four groups that were bonded with the denting bonding agent (p > 0.10). There was also no statistically significant difference in the amount of microleakage among the four groups that were bonded without the denting bonding agent (p > 0.50). Neither was there a statistically significant difference among all eight groups when they were all compared to each other (p > 0.10).

Conclusions: The use of any of the tested topical fluorides can be used in conjunction with sealants, without increasing the microleakage and the use of a DBA does not help to decrease the amount of microleakage with sealants.

LLU Discipline

Pediatric Dentistry

Department

Pediatric Dentistry

School

Graduate School

First Advisor

John Peterson

Second Advisor

Jay Kim

Third Advisor

Wesley Okumura

Fourth Advisor

Daniel Tan

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

2004

Date (Title Page)

12-2004

Language

English

Library of Congress/MESH Subject Headings

Dental Materials; Dental Leakage; Pit and Fissure Sealants; Dentin-Bonding Agents; Fluorides -- adverse effect

Type

Thesis

Page Count

ix; 29

Digital Format

PDF

Digital Publisher

Loma Linda University Libraries

Usage Rights

This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Collection

Loma Linda University Electronic Theses and Dissertations

Collection Website

http://scholarsrepository.llu.edu/etd/

Repository

Loma Linda University. Del E. Webb Memorial Library. University Archives

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