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.
Highlights
Permanent teeth play an important role in the establishment and maintenance of the form and function of dentition, and their presence in the dental arch is fundamental for the establishment of balanced, dynamic occlusion, in addition to facial esthetics and harmony
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
The teeth were 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+JAphysiologic solution + jets of air, Group PS+G- physiologic solution + gauze, Group PS+CW- physiologic solution + cotton wool
Summary
Permanent teeth play an important role in the establishment and maintenance of the form and function of dentition, and their presence in the dental arch is fundamental for the establishment of balanced, dynamic occlusion, in addition to facial esthetics and harmony. Given their importance, when confronted with an impacted permanent tooth, every effort should be made to retain the tooth and prevent it from being extracted (KOKICH; MATHEWS, 1993; KOKICH, 2004; KOKICH; CRABILL, 2006). The tooth surface decontamination process becomes quicker than repeating the whole bonding procedure. Decontamination methods have been increasingly indicated in cases of trans-surgical bonding
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