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Thermal imaging of the pulp during residual adhesive removal

Thermographie in der Pulpa während der Entfernung von Adhäsivresten

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Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie Aims and scope Submit manuscript

Abstract

Objective

The aim of this study was to evaluate the temperature changes of the pulpal area during different adhesive clean-up procedures.

Materials and methods

A total of 80 freshly extracted adult maxillary premolar teeth were divided into four groups. Adhesive clean-up was performed with 6- and 12-fluted tungsten carbide burs (TCB) using low- and high-speed handpieces with air or water cooling after bracket debonding. The temperature changes and cool down times were evaluated with a thermal camera. Paired t test, analysis of variance (ANOVA), and Student–Newman–Keuls multiple comparison analysis were used for statistical analysis of the data.

Results

All experimental groups, except the water cooling group, showed a significant temperature rise (p < 0.001) after residual adhesive removal. Only the 6-fluted TCB group with air cooling using a high-speed handpiece exceeded the critical 5.5 °C threshold value (5.91 ± 0.89 °C); this group also exhibited the longest cool down time to initial temperature (71.95 ± 13.68 s). The smallest temperature rise (0.48 ± 0.90 °C) and shortest cooling time value (11.90 ± 5.3 s) were measured in the 6-fluted TCB group with water cooling using a high-speed handpiece.

Conclusion

Appropriate cooling procedures and fine tungsten carbide burs should be used during the removal of remnant adhesives after bracket debonding in order to prevent adverse pulpal reactions.

Zusammenfassung

Zielsetzung

Ziel der Studie war die Evaluierung von Temperaturveränderungen im Bereich der Pulpa während unterschiedlicher Verfahren für die Entfernung von Adhäsivresten.

Material und Methoden

80 frisch extrahierte Oberkieferprämolaren von Erwachsenen wurden in 4 Gruppen eingeteilt. Nach dem Bracket-Debonding wurde das Adhäsiv mittels Hartmetallfinierern (tungsten carbide burs, TCB) mit 6 bzw. 12 Schneiden an Hoch- bzw. Niedergeschwindigkeitshandstücken und bei Luft- oder Wasserkühlung entfernt. Temperaturänderungen und Abkühlzeiten wurden mit einer Thermokamera evaluiert. Zur statistischen Datenanalyse wurden gepaarter t-Test, ANOVA (analysis of variance) und der Student–Newman–Keuls-Test verwendet.

Ergebnisse

Mit Ausnahme der Versuchsgruppe, in der Wasserkühlung verwendet wurde, zeigte sich in allen Gruppen ein signifikanter Temperaturanstieg (p < 0,001) nach Entfernung der Adhäsivreste. Nur in einer Gruppe (6-Schneiden-TCB, Luftkühlung, Hochgeschwindigkeitshandstück) wurde mit 5,91 ± 0,89 °C der kritische 5,5 °C-Schwellenwert überschritten, in dieser Gruppe waren auch die Zeiten bis zur Abkühlung auf die Ausgangstemperatur am längsten (71,95 ± 13,68 s). Der geringste Temperaturanstieg (0,48 ± 0,90 °C) und die schnellste Abkühlung (11,90 ± 5,3 s) zeigten sich in der Versuchsgruppe mit 6-TCB, Wasserkühlung und Hochgeschwindigkeitshandstück.

Schlussfolgerung

Während der Entfernung von Adhäsivresten nach Bracket-Debonding sind zur Prävention unerwünschter Reaktionen im Bereich der Pulpa geeignete Kühlverfahren und feine Hartmetallfinierer einzusetzen.

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Authors and Affiliations

  1. Department of Orthodontics, Faculty of Dentistry, Istanbul Yeni Yuzyil University, Istanbul, Turkey

    Gökmen Kurt

  2. Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey

    Nisa Gül & Gülşen Çakmak

  3. Department of Endodontics, Faculty of Dentistry, Trakya University, Edirne, Turkey

    Özgür Er

  4. Department of Computer Engineering, Faculty of Engineering, Erciyes University, Kayseri, Turkey

    Emre Bendeş & Veysel Aslantaş

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  1. Gökmen Kurt
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  2. Nisa Gül
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  3. Özgür Er
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  4. Gülşen Çakmak
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  5. Emre Bendeş
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  6. Veysel Aslantaş
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Correspondence to Gökmen Kurt.

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This article does not contain any studies with human participants or animals performed by any of the authors.

Conflict of interest

G. Kurt, N. Gül, Ö. Er, G. Çakmak, E. Bendeş, and V. Aslantaş declare that they have no conflict of interest.

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Kurt, G., Gül, N., Er, Ö. et al. Thermal imaging of the pulp during residual adhesive removal. J Orofac Orthop 78, 330–337 (2017). https://doi.org/10.1007/s00056-017-0089-x

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  • DOI: https://doi.org/10.1007/s00056-017-0089-x

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