Comparison of Shear Bond Strength of Two Bonding Agents for Recycled Self-Ligating Brackets | ||||
| Egyptian Dental Journal | ||||
| Article 4, Volume 64, Issue 4 - October (Orthodontics, Pediatric & Preventive Dentistry), October 2018, Page 2955-2961 PDF (515.36 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2018.78106 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Ghada El-Mehy | ||||
| ASS. Prof. of Orthodontics, Faculty of Dentistry, Tanta University | ||||
| Abstract | ||||
| Introduction: Bracket dislodgment is a common orthodontic problem. The clinician might has the option of reusing the old bracket after recycling rather than replacing it with a new one. Purpose: This current invitro study was designed to compare the effect of recycling of selfligating brackets on shear bond strength (SBS) of both flowable composite and self-etch primer. Materials & Methods: Thirty extracted premolars were randomly divided into two groups of 15 teeth per each according to the type of adhesive used. In group I, self-ligating (Damon) Brackets were bounded with flowable composite Grandio Flow (GF) and in group II were bonded with Transbond plus self-etch primer (SEP). All the specimen were subjected to recycling by a low speed carbide debonding burs. The Universal Testing Machine was used to measure SBS. The mode of bond failure was evaluated by the adhesive remnant index (ARI). The data was analysed with T-test while ARI scores were evaluated by Wilcoxon test. Results: There was a significant difference between the two tested groups (P< 0.05). Flowable composite (GF) showed a significantly higher SBS than self-etching primer (SEP), for both before and after recycling. After recycling there was a nonsignificant difference in SBS of the two groups (P > 0.05), for ARI, there was a nonsignificant difference between the two tested groups (P > 0.05). Conclusion: Self-ligating Damon brackets bonded with (GF) and (SEP) could be successfully recycled by low speed debonding bur. GF was superior in SBS. Key words: bond strength, recycling, self ligating brackets, adhesives. | ||||
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