Fragment reattachment using a technique with no preparation and an adhesive system associated with an intermediate composite with good mechanical properties can restore part of the resistance of the fractured tooth
BACKGROUND / AIMS Fragment reattachment is a procedure that offers advantages , such as preservation of tooth structure and maintenance of color , shape , and translucency of the original tooth .
The aim of this study was to analyze the reattachment techniques used to restore anterior teeth fractured by trauma .
Fracture resistance of reattached incisor fragments with mini fibre-reinforced composite anchors.
OBJECTIVES Fractured coronal fragments of incisors can be adhered to the remaining tooth with resin composite , but are prone to failure . This study explores whether mini fibre-reinforced composite ( FRC ) anchors increase fracture resistance of reattached fragments . METHODS Forty-five extracted incisors were r and omly divided into three groups . In Groups A and B coronal fragments were reattached to the remaining tooth , with additionally two anchors placed in Group B. In Group C resin composite buildups were made . Specimens were statically loaded until failure occurred . Failure modes were characterized as intact remaining tooth substrate ( adhesive or cohesive failure of coronal fragment ) or fractured remaining tooth substrate ( fracture limited to enamel or extending into dentin ) . RESULTS Mean fracture loads were 255N ( SD=108N ) for Group A , 599N ( SD=465N ) for Group B and 786N ( SD=197N ) for Group C ( values significantly different , all p values < 0.05 ) . Group A showed purely adhesive failures , while Groups B and C showed 73 and 53 % fractures of remaining tooth substrate ( p<0.05 ) . CONCLUSIONS Mini FRC anchors increase fracture resistance of reattached coronal fragments , but induce more remaining tooth substrate fractures
Fragment reattachment using a technique with no preparation and an adhesive system associated with an intermediate composite with good mechanical properties can restore part of the resistance of the fractured tooth
BACKGROUND / AIMS Fragment reattachment is a procedure that offers advantages , such as preservation of tooth structure and maintenance of color , shape , and translucency of the original tooth .
The aim of this study was to analyze the reattachment techniques used to restore anterior teeth fractured by trauma .