Effect of the caries-protective self-assembling peptide P11-4 on shear bond strength of metal brackets
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ORIGINAL ARTICLE
Effect of the caries-protective self-assembling peptide P11-4 on shear bond strength of metal brackets Thomas Knaup1 · Heike Korbmacher-Steiner1 · Anahita Jablonski-Momeni1 Received: 28 January 2020 / Accepted: 21 June 2020 © Springer Medizin Verlag GmbH, ein Teil von Springer Nature 2020
Abstract Purpose During orthodontic treatment with fixed appliances, demineralization around brackets often occurs. The aim of this in vitro study was to investigate the effect of the caries-protective self-assembling peptide P11-4 (SAP P11-4) on the shear bond strength of metal brackets. Methods In all, 45 extracted human wisdom teeth were available for the study. The teeth were randomly divided into 3 groups (each n = 15) and pretreated as follows: test group 1: application of SAP P11-4 (Curodont Repair, Windisch, Switzerland) and storage for 24 h in artificial saliva; test group 2: application of SAP P11-4; control group: no pretreatment with SAP P11-4. A conventional metal maxillary incisor bracket (Discovery, Dentaurum, Ispringen) was adhesively bonded to each buccal surface. The shear bond strength was tested according to DIN 13990. After shearing, the Adhesive Remnant Index (ARI) was determined microscopically (10 × magnification). Analysis of variance (ANOVA) was used to check the groups for significant differences (α = 0.05). The distribution of the ARI scores was determined with the χ 2 test. Results There was no significant difference in shear forces between the groups (p = 0.121): test group 1 = 17.0 ± 4.51 MPa, test group 2 = 14.01 ± 2.51 MPa, control group 15.54 ± 4.34 MPa. The distribution of the ARI scores between the groups did not vary (p-values = 0.052–0.819). Conclusion The application of the caries protective SAP P11-4 before bonding of brackets did not affect the shear bond strength. Therefore, pretreatment of the enamel surface with SAP P11-4 shortly before bracket insertion can be considered.
Keywords Oral hygiene · Orthodontic appliances, fixed · Dental white spots · Dental enamel · Dental caries, prevention
Der Einfluss des kariesprotektiven Peptids P11-4 auf den Haftverbund zwischen Metallbracket und Zahnschmelz Zusammenfassung Ziel Während einer kieferorthopädischen Behandlung mit festsitzenden Apparaturen können in der Bracketzirkumferenz Demineralisationen entstehen. Im Rahmen dieser In-vitro-Studie sollte der Einfluss des kariesprotektiven Peptids P11-4 auf das Haftverhalten zwischen Metallbrackets und Zahnoberfläche untersucht werden.
Prof. (apl.) Dr. med. dent. Anahita Jablonski-Momeni
[email protected] 1
Dental School, Dept. of Orthodontics, Philipps-University Marburg, Georg-Voigt Str. 3, 35039 Marburg, Germany
K
T. Knaup et al.
Methoden Fünfundvierzig extrahierte humane Weisheitszähne standen für die Studie zur Verfügung. Die Zähne wurden randomisiert auf 3 Gruppen verteilt (je n = 15) und unterschiedlich vorbehandelt: Testgruppe 1: Applikation von P11-4 (Curodont Repair, Windisch, Schweiz) und Lagerung für 24 h in künstlichem Speichel; Testgruppe 2: Applik
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