Zusammenfassung
Ziel dieser kontrollierten prospektiven randomisierten In-vivo-Studie war es, die
Wirksamkeit zweier verschiedener Haftvermittlersysteme zu vergleichen. Bei 60 Patienten
wurden vier unterschiedliche Brackettypen entweder mit selbstkonditionierender (=
selbstätzender) Technik (Gruppe 1), die eine Zeitersparnis durch Weglassen eines Arbeitsschrittes
bewirkt oder konventioneller Adhäsivtechnik (Gruppe 2) an insgesamt 840 Zähnen untersucht.
Die Unterschiede wurden anhand des Bracketverlustes mit dem ARI-Score bewertet. Nach
einem durchschnittlichen Beobachtungszeitraum von sechs Monaten konnte zwischen den
Gruppen kein signifikanter Unterschied bei der Haftung der Brackets festgestellt werden
(1,9 % in Gruppe 1 zu 3,1 % in Gruppe 2). In beiden Gruppen kam es in der Molarenregion
öfter zu Bracketablösungen als in der Frontzahnregion, wobei dieser Effekt bei der
konventionellen Adhäsivtechnik stärker ausgeprägt war. In Bezug auf den ARI-Score
gab es zwischen den Gruppen keinen signifikanten Unterschied. Das Ergebnis dieser
Arbeit zeigt einen minimalen Vorteil der selbstkonditionierenden Technik hinsichtlich
der Haftwirkung der Brackets und eine Zeitersparnis gegenüber der konventionellen
Technik.
Abstract
The aim of this prospective randomised controlled in-vivo study was to evaluate the
effectiveness of two different bonding systems. In 60 patients four bracket types
were used on a total of 840 teeth which were bonded with a timesaving, self etching
priming system (group 1) or with the conventional (group 2) bonding technique. The
differences in bracket failures were measured according to the ARI scoring system.
After a mean follow-up period of six month no significant differences in bracket failure
between the groups could be found (1.9 % in group 1 vs. 3.1 % group 2). In both groups
bracket failures were more likely to occur in the molar region than in the frontal
region, showing a stronger effect in group 2. According to the ARI scoring system
no differences between the groups were found. The results of this study show moderate
advantages for the self etching priming system which additionally saves time.
Schlüsselwörter
selbstkonditionierende Adhäsivtechnik - Bracketverlust - Haftung - ARI-Score
Key words
self etching priming system - bracket failure - bond strength - ARI scoring system
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Dr. med. dent. E. Beilhack
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