Using UV light for adhesive remnant removal after debonding of orthodontic accessories

Abstract

The objective of this study was to assess the effect of a UV lightbased auxiliary illumination on adhesive remnant (AR) removal after orthodontic debonding. Sixty human molars were divided according to the adhesive used for bonding: O-opaque; LF-low fluorescence; and HFhigh fluorescence. After debonding, the teeth were subdivided according to the AR removal method: No UV light or With UV light. After AR removal, the teeth were polished. Direct visual analysis, scanning electron microscopy (SEM) and time quantification for AR removal analyses were performed (Fisher-Freeman-Halton, Fisher's exact, chisquare trend, ANOVA, and independent t-tests; α = 5%). Concerning the adhesives, there was no significant difference among direct visual, SEM and time analyses for AR removal (p ≥ 0.05). Regarding AR removal methods, a similarity among the subgroups was verified for direct visual and SEM analyses (p≥0.05). However, a significant trend was verified for the with UV light method to produce greater marks, and the no UV light method, to produce a greater rate of samples with AR before polishing (p = 0.015). AR removal with light was significantly quicker in comparison with the no UV light method (p < 0.0001). The use of UV light may aid orthodontists in removing AR more thoroughly and in less time. However, they should receive special training to apply this technology, and should never dismiss the final polishing procedure.

Befestigungsmöglichkeiten von Brackets und Attachments in der Kieferorthopädie

“…Falsch positionierte Brackets können zu ungewollten und falschen Zahnbewegungen führen [23]. Weiterhin muss ein Überschuss ebenso wie ein Unterschuss an Befestigungsmaterial unbedingt vermieden werden, weil diese die Plaque-Akkumulation und somit das Entstehen von White-Spot-Läsionen fördern [24,25]. Eine weitere wichtige Rolle spielt die Bracket-Verlustrate, die im Sinne des Patienten und Behandlers so gering wie möglich sein sollte.…”

“…Dies soll das Beseitigen von verbliebenem Material nach der Bracket-Entfernung erleichtern. Kaneshima et al [25] konnten in vitro zeigen, dass die Entfernung des fluoreszierenden Befestigungsmaterials schneller möglich war, als die des konventionellen Materials. Allerdings zeigten sich nach Entfernung des fluoreszierenden Materials mehr Beschädigungen des Zahnschmelzes.…”

“…Allerdings zeigten sich nach Entfernung des fluoreszierenden Materials mehr Beschädigungen des Zahnschmelzes. Die Autoren ziehen den Schluss, dass ein professionelles Training des Behandlers vor der klinischen Anwendung wichtig ist [25]. Chemisch härtende Komposite hingegen bieten eine Zeitersparnis, da der separate Schritt der Aushärtung nicht aktiv vorgenommen werden muss bzw.…”

Do fluorescent agents alter the mechanical strength of orthodontic adhesives? An in vitro and clinical study

“…From a clinical perspective, recent studies [10][11][12][13] have found that the use of UV light could help orthodontists view adhesives by using fluorescent agents, since they permit a more efficient removal of the remnants after debonding (Fig. 1a, b).…”

“…1a, b). This technology also reduces the length of time needed to carry out the procedure of removal of the adhesive remnants [12]. Another important clinical aspect is that adhesive systems for orthodontic use require a minimum load for shear bond strength [14].…”