Effects of fluorosed enamel on orthodontic bracket bonding : An in vitro study.
Auswirkungen von Zahnschmelzfluorose auf die kieferorthopädische Bracketadhäsion : Eine In-vitro-Studie.
Enamel abrasion
Enamel deproteinization
Enamel fluorosis
Shear bond strength
Surface topography
Journal
Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie
ISSN: 1615-6714
Titre abrégé: J Orofac Orthop
Pays: Germany
ID NLM: 9713484
Informations de publication
Date de publication:
Mar 2023
Mar 2023
Historique:
received:
08
10
2020
accepted:
13
07
2021
pubmed:
21
8
2021
medline:
3
3
2023
entrez:
20
8
2021
Statut:
ppublish
Résumé
To investigate the effect of enamel deproteinization and air abrasion on shear bond strength (SBS), adhesive remnant index (ARI) scores, and surface topography when bonding orthodontic brackets to fluorosed enamel. The sample included 90 fluorosed and 30 normal premolars divided into four groups: group I (fluorosed premolars subjected to air abrasion before acid etching), group II (fluorosed premolars subjected to deproteinization before acid etching), group III (fluorosed premolars; control for groups I and II), and group IV (normal premolars; control for group III). Bonding procedures included etching with 37% phosphoric acid, priming with Transbond Fluorosed premolars subjected to deproteinization showed the lowest (median = 6.57 MPa) SBS among the four groups, followed by 8.14, 8.90, 8.14 MPa for groups I, III, and IV respectively. ARI scores were significantly different between the four groups (p = 0.006). Fluorosed enamel etched after air abrasion or deproteinization with NaOCl showed a predominance of type 4 etching pattern with some areas appearing unetched. Shear bond strength of all groups was within the 6-8 MPa acceptable range for orthodontic purposes. Fluorosed premolars subjected to deproteinization showed the lowest values. Further studies are recommended to scrutinize the deproteinization technique. ZIELSETZUNG: Untersucht werden sollte die Auswirkung der Schmelzdeproteinisierung und der Luftabrasion auf die Scherhaftung (SBS), den Adhäsivrestindex (ARI) und die Oberflächentopographie beim Kleben von kieferorthopädischen Brackets auf von Fluorose betroffenem Schmelz. Die Stichprobe umfasste 90 fluorierte und 30 normale Prämolaren, die in 4 Gruppen eingeteilt wurden: Gruppe I (Prämolaren mit Fluorose, die vor der Säureätzung einer Luftabrasion unterzogen wurden), Gruppe II (Prämolaren mit Fluorose, die vor der Säureätzung deproteinisiert wurden), Gruppe III (Prämolaren mit Fluorose; Kontrolle für die Gruppen I und II) und Gruppe IV (normale Prämolaren; Kontrolle für Gruppe III). Das Bondingverfahren umfasste die Ätzung mit 37%iger Phosphorsäure, die Grundierung mit Transbond Prämolaren mit Fluorose, die einer Deproteinisierung unterzogen wurden, zeigten den niedrigsten (Median 6,57 MPa) SBS unter den 4 Gruppen, gefolgt von 8,14, 8,90 und 8,14 MPa für die Gruppen I, III bzw. IV. Die ARI-Scores waren signifikant unterschiedlich zwischen den 4 Gruppen (p = 0,006). Von einer Fluorose betroffener Schmelz, der nach Luftabrasion oder Deproteinisierung mit NaOCl geätzt wurde, zeigte überwiegend ein Ätzmuster vom Typ 4, wobei einige Bereiche ungeätzt erschienen. Die Scherhaftung aller Gruppen lag innerhalb des kieferorthopädisch akzeptablen Bereichs von 6‑8 MPa. Prämolaren mit einer Fluorose, die einer Deproteinisierung unterzogen wurden, zeigten die niedrigsten Werte. Es werden weitere Studien empfohlen, um die Deproteinisierungstechnik zu überprüfen.
Autres résumés
Type: Publisher
(ger)
ZIELSETZUNG: Untersucht werden sollte die Auswirkung der Schmelzdeproteinisierung und der Luftabrasion auf die Scherhaftung (SBS), den Adhäsivrestindex (ARI) und die Oberflächentopographie beim Kleben von kieferorthopädischen Brackets auf von Fluorose betroffenem Schmelz.
Identifiants
pubmed: 34414482
doi: 10.1007/s00056-021-00342-x
pii: 10.1007/s00056-021-00342-x
doi:
Substances chimiques
Transbond
135669-49-7
Resin Cements
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
88-99Informations de copyright
© 2021. Springer Medizin Verlag GmbH, ein Teil von Springer Nature.
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