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A comparison of different sealants preventing demineralization around brackets

Ein Vergleich unterschiedlicher Versiegler zur Prävention von Demineralisierung im Bracketumfeld

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

Abstract

Aim

Aim of the study was to compare how six different sealants resisted thermal, mechanical, and chemical loading in vitro.

Materials and methods

In all, 120 extracted human, nondecayed molars were divided into six groups (20 samples each) and embedded in resin blocks. The buccal surfaces of the tooth samples were polished and divided into three areas. Area A contained the product to be analyzed, area B was covered with colorless nail varnish (negative control), and area C remained untreated (positive control). The samples were stored in 0.1% thymol solution. To simulate a 3-month thermomechanical load, the samples were subjected to thermal cycling and a cleaning device. After 7 days incubation in a ten Cate demineralization solution (pH value: 4.6), the samples were dissected using a band saw and the lesion depths and demineralization areas were evaluated and compared microscopically.

Results

The tooth surfaces treated with PRO SEAL® showed no demineralization. Mean lesion depths of 108.1, 119.9, 154.9, 149.2, and 184.5 μm were found with Alpha-Glaze®, Seal&Protect®, Tiefenfluorid®, Protecto®, and Fluor Protector, respectively. There was a significant difference between PRO SEAL® and the other products (p > 0.0001). There was no significant difference between the other products.

Conclusion

PRO SEAL® resisted thermal, mechanical, and chemical loading in vitro, providing protection against white spot lesions.

Zusammenfassung

Ziel

Verglichen werden sollten sechs unterschiedliche Versiegler in Hinblick auf die Widerstandsfähigkeit gegenüber thermischen, mechanischen und chemischen Einflüssen in vitro.

Material und Methoden

Insgesamt 120 extrahierte humane, kariesfreie Molaren wurden 6 Gruppen à 20 zugeordnet und in Kunststoff eingebettet. Die Bukkalflächen der Zahnproben wurden poliert und in drei Bereiche eingeteilt: Bereich A enthielt das zu analysierende Produkt, Bereich B war mit farblosem Nagellack überzogen (Negativkontrolle) und Bereich C blieb unbehandelt (Positivkontrolle). Die Proben wurden in einer Thymollösung (0,1%) aufbewahrt. Zur Simulation einer 3‑monatigen thermomechanischen Belastung wurden die Proben Temperaturschwankungen und einer Reinigungsprozedur unterzogen. Im Anschluss an eine 7‑tägige Inkubationszeit in einer Demineralisierungslösung (ten Cate, pH-Wert 4,6) wurden die Proben mit einer Bandsäge zerteilt. Die demineralisierten Bereiche wurden evaluiert und mittels Lichtmikroskopie miteinander verglichen.

Ergebnisse

An den mit PRO SEAL® behandelten Zahnoberflächen zeigte sich keine Demineralisierung. Die Tiefe der Läsionen in den mit Alpha-Glaze®, Seal&Protect®, Tiefenfluorid®, Protecto® bzw. Fluor Protector behandelten Flächen betrug im Mittel 108,1, 119,9, 154,9, 149,2 und 184,5 μm. Ein statistisch signifikanter Unterschied (p > 0,0001) zeigte sich zwischen PRO SEAL® und allen anderen Produkten, keine signifikanten Unterschiede ergaben sich dagegen zwischen den anderen Produkten.

Schlussfolgerung

Der Versiegler PRO SEAL® zeigte in vitro Widerstandsfähigkeit gegenüber thermischen, mechanischen und chemischen Einflussfaktoren und schützte damit vor White-Spot-Läsionen.

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Authors and Affiliations

  1. Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Center for Dental and Craniofacial Sciences, Charité – Universitätsmedizin Berlin, Aßmannshauser Straße 4–6, 14197, Berlin, Germany

    Stefanie Louise Coordes, Paul-Georg Jost-Brinkmann, Thomas Michael Präger, Theodosia Bartzela, Dominik Visel, Theresa Jäcker & Ralf Müller-Hartwich

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  1. Stefanie Louise Coordes
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  2. Paul-Georg Jost-Brinkmann
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  3. Thomas Michael Präger
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  4. Theodosia Bartzela
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  5. Dominik Visel
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  6. Theresa Jäcker
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  7. Ralf Müller-Hartwich
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Correspondence to Stefanie Louise Coordes.

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Conflict of interest

S.L. Coordes, P.-G. Jost-Brinkmann, T.M. Präger, T. Bartzela, D. Visel, T. Jäcker and R. Müller-Hartwich declare that they have no competing interests.

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Coordes, S.L., Jost-Brinkmann, PG., Präger, T.M. et al. A comparison of different sealants preventing demineralization around brackets. J Orofac Orthop 79, 49–56 (2018). https://doi.org/10.1007/s00056-017-0116-y

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