Bonding of brackets using a caries-protective adhesive patch

Abstract

OBJECTIVES: The purpose of this study was to assess the shear bond strength (SBS) of metal brackets when placed with a caries protective adhesive patch. METHODS: Forty stainless steel brackets (Ormco) were bonded to 40 bovine enamel samples according to the following conditioning/bonding procedures using a resin-based orthodontic luting material (Heliosit Orthodontic, N=10 per group): (A) 35% phosphoric acid (30s), rinse and dry; (B) as in A but additional placement of a prototype adhesive patch (Ivoclar Vivadent) using a bonding agent (Heliobond); (C) application of a two-step self-etch adhesive (AdheSE); (D) as in C but additional patch placement. Samples were stored at 37 degrees C for 24h. SBS was measured with a universal testing machine with a crosshead speed of 0.5mm/min and the adhesive remnant index (ARI) was determined under a stereomicroscope (16x). RESULTS: Mean SBS (standard deviation) values were as follows: (A) 16.6 (6.4)MPa; (B) 12.2 (5.8); (C) 12.9 (5.0); and (D) 10.5 (4.7). Analysis of variance followed by Bonferroni correction revealed no statistically significant differences. In 2 (B) and 4 (D) specimens, complete retention of the adhesive patch was observed. CONCLUSIONS: All treatment groups showed adequate bond strength values. The adhesive patch could therefore be applied in combination with orthodontic brackets and seal the enamel adjacent to the bracket. Conclusions: All treatment groups showed adequate bond strength values. The adhesive patch could therefore be applied in combination with orthodontic brackets and seal the enamel adjacent to the bracket. Bonding of brackets using a caries-protective adhesive patch

The Antibacterial Properties of Composite Resin Containing Nanosilver against Streptococcus mutans and Lactobacillus

“…30,31 In spite of using fluoride and glass ionomer particles in composite restorations, it seems using composite resin cements containing antibacterial materials would be useful for reducing caries activity around orthodontic brackets. 8,32,33 Failure of posterior class II composite restorations due to microleakage and secondary caries can be prevented by using these bactericidal composites as liners under final restorations.…”

Caries infiltrant combined with conventional adhesives for sealing sound enamel in vitro

“…2,6 Prevention methods mainly target the remineralization process and the inhibition of present bacterial flora through topical fluoride applications, use of adhesives with remineralization potential that contains amorphous calcium phosphate or fluoride, casein phosphopeptide-amorphous calcium-phosphate-containing pastes, chlorhexidine mouth rinses, ozone applications, probiotics, xylitol, and sealants. 2,6,7 Although remineralization of WSL could be achieved to some extent using related measures, clinically it has been shown that WSL do not disappear unless they are removed mechanically by abrasion, etching, or masking by resin infiltration or treated in a restorative fashion. 8,9 Among these, prevention measures that do not require patient compliance are considered to be more predictable since only 13% of the patients were reported to achieve excellent cooperation with the use of mouth rinses and tooth brushing.…”

“…2,10 Therefore, sealing the susceptible enamel prior to bracket bonding in order to form a caries-protective shield has been the focus of interest in previous studies that primarily intend to eliminate patient compliance. 7,11 In principle, sealants cover the whole buccal surface adjacent to brackets, forming a physical barrier. 2,7,11 This protective shield is subjected to physical challenges such as acid attacks from bacterial plaque and acidic soft drinks as well as daily tooth brushing, which might impair the seal.…”

“…7,11 In principle, sealants cover the whole buccal surface adjacent to brackets, forming a physical barrier. 2,7,11 This protective shield is subjected to physical challenges such as acid attacks from bacterial plaque and acidic soft drinks as well as daily tooth brushing, which might impair the seal. 5,11 Recently, a low-viscosity caries infiltrant with high penetration ability has been shown to increase the protective capacity of conventional adhesives against demineralization.…”

Effects of Different Chlorhexidine Formulations on Shear Bond Strengths of Orthodontic Brackets

“…[1][2][3] Despite recent advances in orthodontic materials and techniques, enamel decalcification and white spot lesion formation continue to pose problems for patients treated with fixed orthodontic appliances. 4,5 Decalcification is detected more commonly on the buccal surfaces of orthodontically treated teeth than on the other surfaces of the same teeth. 6 In these cases, to eliminate and/or minimize the caries risk, preventive efforts should concentrate on the direct suppression of cariogenic microflora by chemotherapeutic agents.…”