The novel cement set more rapidly, had better fluidity, improved handling properties, higher mechanical strength, and reduced porosity with lower pore size compared to Gray-MTA Angelus.

Because of its insidious pathology, internal root resorption can extend to significant dimensions before being recognized. MTA plus the fitting of a fibre-glass post provided adequate, functional rehabilitation of a compromised tooth for 20 months. Despite the favourable biological and mechanical properties of white MTA, considerable tooth discolouration may occur.

This case report presents the treatment of a right central maxillary incisor of an 8-year old white male patient with history of traumatic avulsion and immediate replantation. The endodontic therapy consisted of periodical changes of calcium hydroxide dressing and a definitive root canal filling with mineral trioxide aggregate (MTA). The treatment was successful without pathologies up to 7 years of follow-up. After the institution of orthodontic treatment a localized and late root resorption was noticed at the last radiographic examination (8 years and 7 months postoperative follow-up). Moreover, the use of MTA promoted a mild crown grey discoloration.

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