| 2708 Incidence of Clinical Debonding in Orthodontics with Reduced Etching Time | ||
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S.D. KERR, T.J. HUGHES, and J.M. POWERS, University of Texas Dental Branch at Houston, USA Objectives: To determine clinically if a reduction in etching time and elimination of pumicing could be done without a change in the incidence of debonding of orthodontic brackets to enamel. Methods: The split-mouth, prospective design involved 20 patients with adult dentition. One side of the mouth served as control using pumice prophylaxis and etching with 35% phosphoric acid gel according to manufacturer's recommendation. The opposite side was prepared using only the gel applied for 5 seconds per tooth. Stainless steel brackets were then bonded using Transbond XT (3M-Unitek) cement. Results: Three hundred-seventy-six brackets were bonded with 9 bond failures (2.4%). Seven of 188 failed with the gel-only group (3.7%), and 2 of 188 failed with the control group (1.1%). A Chi Square test (p=0.05) showed no statistically significant difference between these two groups. Conclusions: The gel-only bonding technique had no statistically significant effect on the number of clinical debonds when compared to the manufacturer's recommended technique. | ||
| Seq #251 - Properties of Impression Materials, Gypsum and Investments, Orthodontic Materials, Handpieces 3:45 PM-5:00 PM, Friday, 8 March 2002 San Diego Convention Center Exhibit Hall C | ||
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Back to the Dental Materials: VIII - Others-Non-metallic Program
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