Citation Information :
Khargekar NR, Kalathingal JH. Evaluation of Different Pretreatment Efficacy with Fluoride-releasing Material on Shear Bond Strength of Orthodontic Bracket: An In Vitro Study. J Contemp Dent Pract 2019; 20 (12):1442-1446.
Aim: The aim of this study was to assess the efficacy of different pretreatments with fluoride-releasing material on shear bond strength (SBS) of orthodontic bracket.
Materials and methods: A total of 60 human mandibular premolars were taken in this study. These samples were stored in periodically changed distilled water at room temperature so as to stop bacterial growth. All samples were randomized to three pretreatment groups: group I, acid etching; group II, fluoride varnish; group III, casein phosphopeptide–amorphous calcium phosphate (CPP–ACP) paste. Later, Transbond XT was applied on brackets made of stainless steel and brackets were centered buccally and then light-cured. The INSTRON universal machine was used to measure SBS. Based on the values, the adhesive remnant index (ARI) was estimated.
Results: The maximum SBS was seen in group III (18.84 ± 1.04), followed by group II (14.18 ± 0.23), and the minimum bond strength was found in group I (13.90 ± 1.22). The one-way analysis of variance (ANOVA) showed high statistically significant difference within the pretreatment groups. The pretreatment group comparisons showed statistically significant difference between group I vs group III and group II vs group III. Score 0 was more in group III [8 (40%)] followed by group II [4 (20%)] and group I [2 (10%)]. The lowest number of score 3 was found in CPP–ACP paste group. After comparing the ARI scores within the groups, the Chi-square test showed a probability of 0.001 which was statistically significant.
Conclusion: Our study established that the CPP–ACP paste pretreatment improves the SBS of orthodontic bracket significantly followed by fluoride varnish and acid etching.
Clinical significance: The bond strength of orthodontic brackets that were bonded should be adequate to resist orthodontic forces applied during treatment. The effect of the adhesive material to improve the adequate bond strength depends on the efficient pretreatment methods.
Al-Kawari HM, Al-Jobair AM. Effect of different preventive agents on bracket shear bond strength: in vitro study. BMC Oral Health 2014;14:28. DOI: 10.1186/1472-6831-14-28.
Fontana M, Young DA, Wolff MS, et al. Defining dental caries for 2010 and beyond. Dent Clin North Am 2010;54(3):423–440. DOI: 10.1016/j.cden.2010.03.007.
da Silva SR, da Silva LAH, Basting RT, et al. Evaluation of the anti-cariogenic potential and bond strength to enamel of different fluoridated materials used for bracket bonding. Rev Odontol UNESP 2017;46(3):138–146. DOI: 10.1590/1807-2577.06716.
Margolis HC, Moreno EC. Physicochemical perspectives on the cariostatic mechanisms of systemic and topical fluorides. J Dent Res 1990;69:606–613. DOI: 10.1177/00220345900690S119.
Toledano M, Osorio R, Osorio E, et al. Bond strength of orthodontic brackets using different light and self-curing cements. Angle Orthod 2003;73(1):56–63.
Artun J, Bergland S. Clinical trials with crystal growth conditioning as an alternative to acid-etch enamel pretreatment. Am J Orthod 1984;85(4):333–340. DOI: 10.1016/0002-9416(84)90190-8.
Abu Alhaija ESJ, Al-Wahadni AMS. Evaluation of shear bond strength with different enamel pre-treatments. Eur J Orthod 2004;26(2): 179–184. DOI: 10.1093/ejo/26.2.179.
Pseiner BC, Freudenthaler J, Jonke E, et al. Shear bond strength of fluoride-releasing orthodontic bonding and composite materials. Eur J Orthod 2010;32(3):268–273. DOI: 10.1093/ejo/cjp116.
Hamba H, Nikaido T, Inoue G, et al. Effects of CPP–ACP with sodium fluoride on inhibition of bovine enamel demineralization: a quantitative assessment using micro-computed tomography. J Dent 2011;39(6):405–413. DOI: 10.1016/j.jdent.2011.03.005.
Serra MC, Cury JA. The in vitro effect of glass-ionomer cement restoration on enamel subjected to a demineralization and remineralization model. Quintessence Int 1992;23(2):143–147.
Rix D, Foley TF, Mammandras A. Comparison of bond strength of three adhesives: composite resin, hybrid gic, an glass filled gic. Am J Orthod Dentofacial Orthop 2001;119(1):36–42. DOI: 10.1067/mod.2001.110519.
Bishara SE, Ajlouni R, Laffoon JF. Effect of thermocycling on the shear bond strength of a cyanoacrylate orthodontic adhesive. Am J Orthod Dentofacial Orthop 2003;123(1):21–24. DOI: 10.1067/mod.2003.1.
Azarpazhooh A, Limeback H. Clinical efficacy of casein derivatives: a systematic review of the literature. J Am Dent Assoc 2008;139(7): 915–924. DOI: 10.14219/jada.archive.2008.0278.
Rehder Neto FC, Maeda FA, Turssi CP, et al. Potential agents to control enamel caries-like lesions. J Dent 2009;37(10):786–790. DOI: 10.1016/j.jdent.2009.06.008.
Kecik D, Cehreli SB, Sar C, et al. Effect of acidulated phosphate fluoride and casein phosphopeptide–amorphous calcium phosphate application on shear bond strengths of orthodontic brackets. Angle Orthod. 2008;78(1):129–133. DOI: 10.2319/122506-529.1.
Xiaojun D, Xuehua G, Jing L, et al. Effects of CPP-ACP paste on the shear bond strength of orthodontic brackets. Angle Orthod 2009;79(5):945–950. DOI: 10.2319/101108-573.1.
Tabrizi A, Cakirer B. A comparative evaluation of casein phosphopeptideamorphous calcium phosphate and fluoride on the shear bond strength of orthodontic brackets. Eur J Orthod 2011;33(3): 282–287. DOI: 10.1093/ejo/cjq062.
Veli I, Akin M, Baka ZM, et al. Effects of different pre-treatment methods on the shear bond strength of orthodontic brackets to demineralized enamel. Acta Odontol Scand 2016;74(1):7–13. DOI: 10.3109/00016357.2014.982703.
