Shear bond strengths of a selenium containing and a conventional light cured adhesive for orthodontic bonding.
| Autor: | Machicek SL; Department of Orthodontics, University of Texas School of Dentistry at Houston, Houston, Texas, USA., McGrory KR, English JD, Stephens CR, Ellis RK, Colville CD, Powers JM, Ontiveros JC, Akyalcin S |
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| Jazyk: | angličtina |
| Zdroj: | Texas dental journal [Tex Dent J] 2011 Dec; Vol. 128 (12), pp. 1261-7. |
| Abstrakt: | Background: The objectives of this study were to evaluate the debonding strength and mode of failure of a selenium containing adhesive compared to an established orthodontic adhesive. Materials and Methods: One hundred sixty bovine mandibular incisors were allocated to eight groups: steel and clear brackets were bonded with either selenium containing adhesive (Group 1: SeLect Defense) or a conventional light-cured adhesive (Group 2:Transbond XT) to measure debond strength and the adhesive remnant index was used to assess the location of bond failure. Data was evaluated using a three-way analysis of variance and Fisher's PLSD multiple comparisons test for mean debond strengths. Results: Group 2 debond strengths were greater than that of Group 1 with the steel and clear brackets. Group 1 debond strengths were greater with clear than with steel brackets at both time points. Both adhesives demonstrated increased debond strengths from zero to 24 hours and the clear brackets exhibited a greater ARI than steel after debonding. Comparisons of debond strength means among adhesives, brackets, and times were all statistically significant. Conclusions/discussion: All debond strengths were within a clinically acceptable range according to previous literature. SeLect Defense may be desirable due to its potential for preventing white spot lesions despite the reduced strength compared to Transbond XT. |
| Databáze: | MEDLINE |
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