Properties of Composite Materials Used for Bracket Bonding

Gama, Ana Caroline Silva; DeVito-Moraes, André Guaraci; Yamasaki, L.C.; Loguércio, Alessandro Dourado; Carvalho, Ceci Nunes; Bauer, José

doi:10.1590/0103-6440201302184

Cited by 15 publications

(10 citation statements)

References 18 publications

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“…Higher ARI values are favorable for avoiding damage to the enamel, as the residue may be safely removed with suitable rotary instruments 31) . Hardness is defined as the resistance of a material to indentation or penetration 32) .…”

Section: Discussionmentioning

confidence: 99%

Influence of the bracket on bonding and physical behavior of orthodontic resin cements

et al. 2015

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The aim of the study is to determine the influence of the type of bracket, on bond strength, microhardness and conversion degree (CD) of four resin orthodontic cements. Micro-tensile bond strength (µTBS) test between the bracket base and the cement was carried out on glass-hour-shaped specimens (n=20). Vickers Hardness Number (VHN) and micro-Raman spectra were recorded in situ under the bracket base. Weibull distribution, ANOVA and non-parametric test were applied for data analysis (p<0.05). The highest values of ή as well as the β Weibull parameter were obtained for metallic brackets with Transbond™ plastic brackets with the self-curing cement showing the worst performance. The CD was from 80% to 62.5%.

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Section: Discussionmentioning

confidence: 99%

Influence of the bracket on bonding and physical behavior of orthodontic resin cements

et al. 2015

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“…The groups that were submitted to decontamination processes presented bond strength values that were higher than the minimum for orthodontic accessories bonded to enamel (REYNOLDS, 1975), because according to this author a bond strength of 6-8 MPa is adequate for the majority of orthodontic clinical requirements to bear the forces of mastication and orthodontic mechanics (CACCIAFESTA et al, 2004ab;SFONDRINI et al, 2004;OZTOPRAK et al, 2007;GAMA et al, 2013). However, among the methods of decontamination, the groups that were submitted to washing only, presented lower mean values.…”

Section: Discussionmentioning

confidence: 93%

Evaluation of decontamination methods of blood/saliva in the bonding of orthodontic accessories

Pithon¹,

Santos²,

Rey³

et al. 2015

Biosci. J.

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ABSTRACT:This study aimed to evaluate the best method for decontaminating tooth enamel contaminated with blood/saliva before bonding orthodontic accessories, since such contamination is commonly present in surgical procedures of extrusion/orthodontics. 195 bovine incisors were used. Initially their vestibular faces received prophylaxis, H3PO4 at 37% and adhesive application. After this, the vestibular faces of all the teeth were contaminated with blood/saliva. The teeth were then randomly divided into 13 groups (n=15), Group C (Control -without contamination and bonded according to manufacturer's recommendations) and 12 experimental groups according to the decontamination method: Group WD-without decontamination, Group DW-washed with distilled water, Group PS-washed with physiologic solution, Group JA-jets of air, Group G-gauze, Group CW-cotton wool, Group DW+JA-distilled water + jets of air, Group DW+G-distilled water + gauze, Group DW+CW-distilled water + cotton wool, Group PS+JA-physiologic solution + jets of air, Group PS+G-physiologic solution + gauze, Group PS+CW-physiologic solution + cotton wool. After bonding the shear bond strength test was performed on all the samples at a speed of 0.5mm/min. Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. The results demonstrated absence of statistical differences between the Control and Groups DW+JA and PS+JA (P>0.05). The groups that presented the lowest bond strength values were Group WD, in which no decontamination was performed, and Group PS in which specimens were washed with physiologic solution only. The best methods of decontaminating enamel contaminated with blood/saliva were washing with distilled water or physiologic solution followed by drying with jets of air.

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“…The higher filler content of Transbond XT might have contributed to this result. A few studies showed that Transbond XT had better performance on higher flexural modulus and SBS values [15,16], and lower contraction stress than less filled adhesives [15]. Very few data of resin cements regarding bracket bonding is available.…”

Section: Discussionmentioning

confidence: 99%

Shear Bond Strength and Adhesive Remnant of Three Protocols used for Bonding Orthodontic Brackets

Morais¹,

Chaves²,

Chaves³

et al. 2016

Pesqui. bras. odontopediatria clín. integr.

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Objective: To test the shear bond strength and the amount of adhesive remnant on the enamel after debonding of a conventional orthodontic composite system, a flowable composite resin, and a self-adhesive resin cement. Material and Methods: Thirty extracted bovine incisors were allocated in three groups, according to the type of adhesive: Group XT (Transbond XT), Group FL (Flow Z350), and Group RX (RelyX U100). All groups had etching with phosphoric acid. Groups XT and FL received primer before adhesive. Stainless steel metal brackets were bonded using the respective adhesive. Teeth were submitted to shear bond strength (SBS) test, followed by measurement of adhesive remnant. Intergroup comparison of SBS values were performed by one-way Anova and Tukey post-hoc test. Kruskal-Wallis test and the Mann-Whitney U-test were used to compare adhesive remnant. Results: Transbond XT presented higher bond strength than RelyX U100 and Flow Z350; all adhesives exhibited bond failure within the adhesive. All groups showed bond failure occurring within the adhesive. Transbond XT and RelyX U100 left significantly more adhesive remnant on the tooth surface than Flow Z350. Conclusion: All three adhesive systems had bond strength above the minimum for clinical routine use. As regards to bond strength, Transbond XT performed better than the resin cement and the flowable resin. Bond failure occurred within the adhesive in all groups.

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Properties of Composite Materials Used for Bracket Bonding

Cited by 15 publications

References 18 publications

Influence of the bracket on bonding and physical behavior of orthodontic resin cements

Influence of the bracket on bonding and physical behavior of orthodontic resin cements

Evaluation of decontamination methods of blood/saliva in the bonding of orthodontic accessories

Shear Bond Strength and Adhesive Remnant of Three Protocols used for Bonding Orthodontic Brackets

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