There may be no difference in failure and orthodontic bracket placement accuracy when using a direct or indirect bonding technique

Summary Introduction The aim of this two-arm parallel trial was to evaluate enamel demineralization in fixed orthodontic treatment using an indirect bonding technique in comparison to a direct bonding technique by the quantitative light-induced fluorescence (QLF) method. Design, settings and participants Fifty-six patients who needed fixed orthodontic treatment were randomly separated into either the direct bonding group or the indirect bonding group. The presence and extent of lesions on the buccal surfaces of all teeth, except the molar teeth, were assessed. The percentage of fluorescence loss (ΔF and ΔFmax), the degree of demineralization (ΔQ) and lesion area (WS area) were determined using the system’s software. The data were analysed with the Wilcoxon signed-rank and Mann–Whitney U-tests (P < 0.05). Interventions Treatment with a direct bonding or an indirect bonding technique. Results This study was completed with 25 patients in the indirect bonding group (12 females, 13 males; mean age: 15.42 ± 1.71 years) and 26 patients in the direct bonding group (12 females, 14 males; mean age: 14.73 ± 1.65 years). In the indirect bonding technique, a few teeth (especially mandibular left canine: 50.45 ± 93.48; 95% confidence interval: −12.35 and 113.26) were found to develop significant white spot lesion (WSL) formation (P < 0.05). However, the number of teeth with demineralization was higher in the direct bonding group (P < 0.05). Conclusion The bonding procedures used in the indirect bonding technique contribute to reducing the degree of WSL formation. Further, the use of flowable composite adhesives in this bonding process is more effective at reducing the appearance of WSLs than in cases where conventional composite adhesives are used. Limitations The limitation of our trial may be the small sample size and the short follow-up time for the patients. Harms No harms were detected during the study. Protocol The protocol was not published before trial commencement. Registration This trial was registered post hoc at ‘Clinical Trials’ (http://www.clinicaltrials.gov), registration number (ID): NCT03738839.

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A clinical trial of an indirect bonding technique with a visible light-cured adhesive

American Journal of Orthodontics and Dentofacial Orthopedics ◽

10.1016/s0889-5406(05)81603-8 ◽

1990 ◽

Vol 98 (3) ◽

pp. 259-262 ◽

Cited By ~ 24

Author(s):

M.J.F. Read ◽

K.D. O'Brien

Keyword(s):

Clinical Trial ◽

Visible Light ◽

Indirect Bonding ◽

Bonding Technique

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The Indirect Bonding Technique in Orthodontics—A Narrative Literature Review

Materials ◽

10.3390/ma13040986 ◽

2020 ◽

Vol 13 (4) ◽

pp. 986

Author(s):

Agnieszka Nawrocka ◽

Monika Lukomska-Szymanska

Keyword(s):

Great Precision ◽

Time Saving ◽

Advantages And Disadvantages ◽

Indirect Bonding ◽

Narrative Literature ◽

Narrative Literature Review ◽

Indirect Technique ◽

Plaster Model ◽

Technique Development ◽

Bonding Technique

The technique described as indirect bonding is an alternative to the conventional intraoral method of bracket placement. The appliance position is planned and fixed on a plaster model and then transferred into the oral cavity. Indirect bonding is a precise and time-saving technique of bracket placement, growing in popularity in recent years. It provides a combination of great precision with time efficiency. The fundaments of the indirect bonding technique are presented here. From the first clinical trial conducted almost fifty years ago, the method has evolved; the progress that has been made is described. Modern technologies involving computer scanning and manufacturing have led to great precision in bracket placement. Digital innovations such as rapid prototyping and stereolithography open up a new avenue of research and represent the next steps in indirect technique development. Individual 3D transfers are convenient in difficult clinical cases and can improve the effectiveness of the procedure, reduce the number of technical stages and reduce total chairside time. This paper also summarizes the advancement in adhesive materials, including an overview of advantages and disadvantages of different types of bonding resins and of the mean shear bond strength (SBS) achieved in the indirect procedure.

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