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 .
Re-attachment of anterior fractured teeth: fracture strength using different techniques.
Fracture of anterior teeth by trauma is a common problem in children and teenagers .  Complex metal-ceramic crowns with considerable loss of remaining sound structure are no longer necessary due to adhesive techniques , such as composite restorations and re-attachment techniques . This study compared the fracture strength of sound and restored anterior teeth using a resin composite and four re-attachment techniques . A " one bottle " adhesive system ( One-Step , BISCO ) and a dual cure resin cement ( Duo-Link , BISCO ) were applied . Thirty-five sound permanent lower central incisors were fractured by an axial load applied to the buccal area and r and omly divided into five groups . The teeth were restored as follows : 1 ) bonded only = just bonding the fragment ; 2 ) chamfer-group = after bonding , a chamfer was prepared on the enamel at the bonding line and filled with composite ; 3 ) overcontour group = after bonding , a thin composite overcontour was applied on the buccal surface around the fracture line ; 4 ) internal dentinal groove = before bonding , an internal groove was made and filled with a resin composite ; 5 ) resin composite group = after a bevel preparation on the enamel edge , the adhesive system was applied and the fractured part of the teeth rebuilt by resin composite . Restored teeth were subjected to the same loading in the same buccal area . Fracture strength after restorative procedure was expressed as a percentage of the original fracture strength and the results analyzed by Kruskal-Wallis statistical analysis . The mean percentages of fracture strength were : Group 1 : 37.09 % , Group 2 : 60.62 % , Group 3 : 97.2 % , Group 4 : 90.54 % and Group 5 : 95.8 % . It was concluded that the re-attachment techniques used in Groups 3 and 4 , as well as the composite restored group ( Group 5 ) , were statistically similar and reached the highest fracture resistance , similar to the fracture resistance of sound teeth
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 .