Enamel surface after debracketing of orthodontic brackets bonded with flowable orthodontic composite. A comparison with a traditional orthodontic composite resin.

摘要: AIM Flowable composites showed acceptable shear bond strength for bonding orthodontic brackets, but it still lacks evidence if the routine clean-up of this type from enamel surface after debracketing is susceptible more difficult procedure, due to their fluidity, and, consequently, lesions, compared with traditional composites. Thus, in vitro study investigated point. METHODS Stainless steel brackets were bonded 60 extracted human premolars using: 1) a new flowable composite (Denfil Flow) (group I; N=20); 2) (Dyract II; N:20); 3) Transbond XT adhesive III; N=20). Twenty untreated teeth control group. After debonding remnant index (ARI) was calculated each tooth. following cracks (measurements about frequency, position tooth crown and direction) evaluated using fiber-optic transillumination. Finally, surfaces analyzed scanning electron microscope quantify lesions RESULTS A significantly higher frequency cracks, (from 65% 80%), mostly cervical third 80%) vertical 75% observed three groups, group (P<0.05), without difference among groups. The significant differences CONCLUSION seem show no relevant terms