Teeth fragment and remaining crown were prepared as follows:
Notches of 1 1.5 mm on approximal sides within the enamel were made by using a No. 1 round diamond bur in both of the fragments and in the remaining crown (these fragments were placed on a wax bar for easier manipulation).Notches were made in order to guide the correct adaptation of tooth fragments. And a bevel of 45 degree measuring about 1.5mm wre made on the enamel margin of the remaining crown.
Both the fragments and the remaining dental structures were acid etched using 37% orthophosphoric acid for 30 s for the enamel and 15 for the dentin; the acid was eliminated by rinsing with distilled water and drying.
Dental adhesive was applied to both the fragments and the teeth and light cured for 40 sec
A flowable resin (EX; Tetric Flow, Ivoclar Vivadentor ) was used to adhere the fragments to the teeth; a thin layer of this resin was placed in the notches and across the fractured surface of the teeth to allow for a small excess of material when the fragments were repositioned, then flowable resin was light cured for 60 sec labially and palatally.
Finally, the excess at the restorative margins were finished and polished with
finishing burs and discs.
REF : Dental Traurnatologv ,27 ,2011.
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