Microleakage Comparison among Three Orthodontic Brackets and Two Orthodontic adhesives
AIMS:To evaluate and compare the microleakage occlusally and gingivally under bracket-composite interface of sapphire ceramic, stainless steel and composite orthodontic brackets bonded with two different generations of orthodontic adhesives.MATERIALS AND METHODS: Seventy-two freshly extracted pre...
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| Format: | Article |
| Language: | Arabic |
| Published: |
University of Mosul, College of Dentistry
2014-08-01
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| Series: | Al-Rafidain Dental Journal |
| Subjects: | |
| Online Access: | https://rden.mosuljournals.com/pdf_163250_aab1699289f8f349a82b0f07291014f5.html |
| Summary: | AIMS:To evaluate and compare the microleakage occlusally and gingivally under bracket-composite
interface of sapphire ceramic, stainless steel and composite orthodontic brackets bonded with two
different generations of orthodontic adhesives.MATERIALS AND METHODS: Seventy-two freshly
extracted premolars were utilized in this study. Three types of orthodontic brackets were used as
follows: sapphire ceramic, composite and stainless steel. The samples were divided into two main
groups of 36 samples; one group was bonded with Resilience® adhesive, while the other was bonded
with Biofix adhesive. Each group was further subdivided into three subgroups of 12 samples according
to bracket types. After photopolymerization, the samples were thermocycled. Samples were sealed with
nail varnish, stained with 2% methylene blue dye then sectioned occlusogingivally, examined under a
stereomicroscope and measured for microleakage at the bracket-adhesive interface from both occlusal
and gingival margins, evaluated statistically with t- tests at p≤0.05 levels of significance. RESULTS:
All groups showed various degrees of microleakage, however, no significant differences either between
the two adhesives or among the three bracket types were recorded. Microleakage beneath sapphire
brackets was significantly higher under the Biofix adhesive at the gingival side.CONCLUSION: No
significant differences were recorded between the occlusal and gingival sites in all of the study
groups.However, the 5th generation adhesive showed higher microleakage with significant difference
under sapphire ceramic brackets at the gingival margin. |
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| ISSN: | 1812-1217 1998-0345 |