Platelet concentrates in the replantation of avulsed teeth: a systematic review

It is accepted that replantation is the treatment of choice for avulsed teeth, however resorption and ankylosis are frequent complications in clinical practice. In such situation it is clinically relevant to evaluate the effectiveness of platelet concentrates in reducing these complications and improving the prognosis for the tooth. The object of this review was to analyse the available evidence on the effectiveness of the use of platelet concentrates on replanted teeth (regeneration of the periodontal ligament and lower complication rates). Only two studies carried out in animals were included in this review. PPP and PRP were used in one and PRF in the other. Both used platelet concentrates for replantation of intentionally extracted teeth. According to a qualitative analysis of these studies, it was observed that PRF is superior in terms of neoformation of tissue similar to periodontal ligament. Evidence exists to support the use of these concentrates, however no controlled, randomised clinical studies were found which compared the effectiveness of the various concentrates with one another.