Platelet-rich plasma in the treatment of Class II furcation defects: a histometrical study in dogs

OBJECTIVE: This study was designed to evaluate the potential adjunctive benefits of platelet-rich plasma (PRP) when used with guided-tissue regeneration (GTR) and bioactive glass (BG) in the treatment of Class II furcation lesions. MATERIAL AND METHODS: Bilateral Class II furcation lesions were surgically created and allowed to become chronic in the mandibular third premolars of 9 dogs. The defects were randomly assigned to: A) GTR+BG and B) GTR+BG+PRP. Similar defects were created in the maxillary third premolars and received the same treatments after 45 days. Dogs were sacrificed 90 days after the first treatment. The histometric parameters evaluated were: connective tissue adaptation, new cementum, new bone, mineralized bone area, non-mineralized bone area, and residual BG particle area. RESULTS: Data analysis showed a superior length of new cementum and a greater mineralized bone area for group B in both periods (p<0.05). The non-mineralized bone area was greater in the control group (p<0.05) in both periods. CONCLUSION: Within the limits of this study, it can be concluded that the use of PRP in the treatment of Class II furcation defects may enhance the amount of new cementum and provide a more mineralized bone in a shorter period of time.

Tratamento de recessões múltiplas em região com alta demanda estética / Treatment af multiple gingival recessian defects in areas with esthetic demands

A presença de recessões gengivais múltiplas representa uma importante queixa estética dos pacientes. A abordagem cirúrgica para o tratamento desses defeitos deve ser direcionada de maneira que a resolução do caso seja efetivada como o menor número de cirurgias e evitandose, se possível, a necessidade de remoção de tecido doador de outras regiões, a fim de otimizar o tratamento e minimizar a morbidade associada ao procedimento. Deste modo, o objetivo do presente artigo foi relatar um caso de recobrimento de recessões gengivais múltiplas para obtenção da estética, promovendo mínima morbidade e desconforto ao paciente.

Multiple gingival recession defects represent an important complaining about smile esthetics. The surgical approach to resolution of these defects should treat ali gingival recessions at the same time and soft tissue grafts should be avoided, optimizing the treatment and minimizing patient morbidity regarding with the surgical procedure. Then, the purpose of this paper was to report on a case with multiple gingival recessions successfully treated, achieving satisfactory aesthetics and minimal patient morbidity.