Hofmann E, Elsner L, Hirschfelder U, Ebert T, Hanke S (2017)
Publication Type: Journal article
Publication year: 2017
Book Volume: 78
Pages Range: 1-10
Journal Issue: 1
DOI: 10.1007/s00056-016-0065-x
OBJECTIVES: Selected combinations of materials were used to create tooth-adhesive-bracket complexes to evaluate shear bond strength (SBS) and the adhesive remnant index (ARI) with regard to enamel sealing. METHODS: Four adhesive systems also appropriate for use as enamel sealants were combined with four bracket types, resulting in 16 adhesive-bracket combinations, each of which was tested on 15 permanent bovine incisors. Sealant-adhesives included two recently introduced fluoride-releasing systems (Riva bond LC®and go!®), one established primer (Opal®Seal™), and one commonly used adhesive as control (Transbond™ XT). Brackets included two metal (discovery®by Dentaurum and Sprint®) and two ceramic (discovery®pearl and GLAM®) systems. After embedding the bovine teeth, bonding the brackets to their surface, and storing the resultant samples as per DIN 13990-2 with modifications, an SBS test was performed by applying the shear force directly at the bracket base in an incisocervical direction. Then the ARI scores were determined. RESULTS: Discovery® + Transbond™ XT yielded the highest (47.2 MPa) and GLAM® + go!®the lowest (17.0 MPa) mean SBS values. Significant differences (p < 0.0001) were found between metal and ceramic brackets of the same manufacturers (Dentaurum and Forestadent). Our ratings of the failure modes upon debonding predominantly yielded ARI 0 or 1. The high SBS values and low ARI scores observed with discovery® + Transbond XT™ were reflected in a high rate of enamel fracture, which occurred on 11 of the 15 tooth specimens in this group. CONCLUSIONS: All sealant-bracket combinations were found to yield levels of SBS adequate for clinical application. SBS values and ARI scores varied significantly depending on which sealant-brackets were used.
APA:
Hofmann, E., Elsner, L., Hirschfelder, U., Ebert, T., & Hanke, S. (2017). Effects of enamel sealing on shear bond strength and the adhesive remnant index : Study of three fluoride-releasing adhesives in combination with metal and ceramic brackets. Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie, 78(1), 1-10. https://dx.doi.org/10.1007/s00056-016-0065-x
MLA:
Hofmann, Elisabeth, et al. "Effects of enamel sealing on shear bond strength and the adhesive remnant index : Study of three fluoride-releasing adhesives in combination with metal and ceramic brackets." Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie 78.1 (2017): 1-10.
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