Survival Rate of Teeth after Replantation of permanent incisors in Relation to defined Parameters: An Interventional Study

AbstractTreatment of severely traumatized teeth is known to be a challenge in oral surgery. In particular, severe tooth trauma in children is difficult to treat, mainly because of damage to the periodontal ligament, unphysiologic storage of the tooth and the growing jaw of these patients.

In this present clinical study, teeth with severe trauma were treated using an extra-oral endodontic method. Auto-alloplastic replantation involves using a titanium post as endodontic filling prior to replantation. Aim of this study was to determine survival rate of such replanted permanent teeth in relation to defined parameters that may influence survival. In this study, 44 patients with 58 replanted teeth were evaluated.

Out of 58 teeth, 28 were avulsed and 30 teeth were dislocated; 24 teeth healed with a functional periodontal ligament (functional healing), 8 teeth healed with ankylosis and a further 8 showed replacement resorption. Infection-related resorptions were present in 2 teeth, which were removed after two months. Other 16 cases could not be assessed. 5-year survival rate according to Kaplan-Meier analysis was 83.9% and estimated time of survival was 88.5 months. Avulsion and storage had no significant effect on tooth loss (p=0.178). Mature teeth had a significantly higher 5-year survival rate (92.2%) than immature teeth (72.4%, p = 0.041, log rank test).

It can be concluded that auto-alloplastic replantation is a reliable method in dental trauma treatment. This method is suitable with a high rate of success for avulsed or severely traumatized teeth.

Keywords: Dental Trauma, Avulsion, Replantation, Extra-Oral Endodontic Treatment.

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