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 .
Effect of dehydration and rehydration intervals on fracture resistance of reattached tooth fragments using a multimode adhesive
BACKGROUND / AIMS The tooth fragment bonding technique , frequently used to restore traumatized teeth , may be affected by dehydration/rehydration periods . The aim of this study was to evaluate the effects of different dry and wet storage intervals on multimode adhesive bonding between reattached fragments and teeth . MATERIAL S AND METHODS Eighty-four bovine incisors were fractured and r and omized into groups ( n=12 ) . After teeth fracturing , each specimen was assigned to one of the following groups : G0 : control group ( sound tooth ) ; GA1 and GA2 : 1-h dehydration and a 15-min or 24-hours rewetting period , respectively ; GB1 and GB2 : 24-hours dehydration and a 15-minutes or 24-hours rewetting period , respectively ; and GC : 1-hour ( GC1 ) or 24-hours ( GC2 ) dehydration period only . Tooth fragments were then reattached using a multimode adhesive in a self-mode technique with a flowable resin composite . The fracture resistance was evaluated in a universal testing machine under a compressive load ( 1 mm/min-1 ) . Data were su bmi tted to two-way analysis of variance and post hoc Tukey test ( 5 % ) . RESULTS No significant interaction between dehydration and rehydration intervals was observed ( P>.05 ) . Only the step of rehydration significantly affected the reattachment strength when compared to the groups su bmi tted only to dehydration , regardless of the interval ( 15 minutes or 24 hours ) . CONCLUSION Rehydrating a tooth fragment for 15 minutes before bonding with a multimode adhesive maintained sufficient moisture to increase reattachment strength
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 .