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  • Title: Periodontal healing following avulsion and replantation of teeth: a multi-centre randomized controlled trial to compare two root canal medicaments.
    Author: Day PF, Gregg TA, Ashley P, Welbury RR, Cole BO, High AS, Duggal MS.
    Journal: Dent Traumatol; 2012 Feb; 28(1):55-64. PubMed ID: 21988960.
    Abstract:
    BACKGROUND:  Non-setting calcium hydroxide (Ultracal XS(®) ) is recommended by the International Association of Dental Traumatology as the initial medicament following avulsion and replantation for mature teeth. There is experimental evidence to suggest Ledermix(®) , placed as an alternative inter-visit dressing may improve periodontal healing. AIM:  This study investigated, using a multi-centre randomized controlled trial, the effect of two root canal medicaments, Ledermix(®) and Ultracal XS(®) , on periodontal healing of avulsed and replanted teeth. MATERIAL AND METHODS:  Children were recruited if they fulfilled all inclusion criteria. Treatment followed a standardized protocol. Assessment of periodontal healing or ankylosis was made clinically and radiographically by an experienced, 'blinded', clinician at 12months. RESULTS:  Over 200 patients were assessed for eligibility at five centres. Twenty-nine patients were eligible for inclusion. Final analysis involved 22 patients with 27 teeth. Ankylosis was detected in four of the 12 teeth in the Ledermix(®) group and nine of 15 in the Ultracal XS(®) group. No significant difference between medicaments was found in the proportion of teeth or patients showing periodontal healing. DISCUSSION:  There was no significant difference in periodontal healing between the two medicaments at either a tooth or patient level. The numbers recruited fell short of an estimated power calculation. For patients meeting the inclusion criteria and completing the trial, periodontal healing was seen in 52% of teeth at the 12-month assessment between both groups. The only factor found to significantly influence the periodontal outcome was dry time.
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