Do Products Preventing Demineralization Around Orthodontic Brackets Affect Adhesive Bond Strength?
Bennett T. Amaechi1, Kaveh Najibfard1, Irene P. Chedjieu2, Hariyali Kasundra1, Linda O. Okoye3, *
1 Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health Science Center, San Antonio, TX, USA
2 Department of Epidemiology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
3 Department of Restorative Dentistry, Faculty of Dentistry, University of Nigeria, Ituku Ozalla, Enugu Campus, Nigeria
This study investigated the effects, on the shear bond strength of orthodontic brackets, of using an antimicrobial selenium-containing sealant (DenteShieldTM) to serve dual functions of priming enamel prior to bonding and as a protective barrier against whitespot lesion formation.
Materials and Methods:
A total of 150 extracted human premolars were randomly assigned into 10 groups (n=15/group). Stainless steel brackets were bonded with two adhesive systems (DenteShieldTM or Transbond XT) after the enamel was conditioned with a primer (DenteShieldTM or Assure Universal) or a filled resin sealant (DenteShieldTM, Pro SealTM or Opal SealTM). The specimens were stored in deionized water at 37 °C for 24 hours and debonded with a universal testing machine.
The use of DenteShieldTM adhesive to bond orthodontic brackets to the enamel surface resulted in a significantly lower (P<0.05), but clinically acceptable, shear bond strength (mean & SD: 14.5±1.6 MPa) as compared with Transbond XT group (mean & SD: 19.3±1.7 MPa). DenteShieldTM sealant used as primer resulted in shear bond strength values comparable to those of Pro SealTM and Opal SealTM. All adhesive-sealant and primer-sealant combinations tested in this study exhibited shear bond strength values greater than 9.6 MPa, sufficient for clinical orthodontic needs.
DenteShieldTM sealant can serve as primer as well as anti-demineralization sealant during orthodontic treatment without adversely affecting the shear bond strength of the bracket.
Keywords: Shear bond strength, DenteShieldTM, Selenium-containing adhesive, Selenium-containing sealant, Orthodontic brackets, Selenium-containing primer, Opal SealTM, Pro SealTM.
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
* Address correspondence to this author at the Department of Restorative Dentistry, Faculty of Dentistry, College of Medicine, University of Nigeria, Ituku Ozalla, Enugu, Nigeria; Tel: +2348068424848; E-mail: firstname.lastname@example.org