الملخص
OBJECTIVES: This study examined the effects of plasma-rich growth factors (PRGF) on accelerating bone regeneration/repair in fresh extraction sockets, and determined the quality and quantity of bone by assessing the bone density using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: Twenty patients, who had undergone bilateral extractions, were included in this study. In one extraction socket, PRGF was used and covered with an autologous fibrin plug. Nothing was used in the opposite side extraction socket. Thirteen weeks post extraction, the level of bone regeneration was evaluated on both sides with CBCT. RESULTS: At the end of the study, the mean bone density according to the Hounsfield units (HU) in the control group and PRGF group was 500.05 HU (type III bone type) and 647.95 HU (type II bone type), respectively. CONCLUSION: This study recommends the use of PRGF in post extraction sites to accelerate the rate of bone regeneration and improve the quality of regenerated bone. The technique to process PRGF was simple compared to previously mentioned techniques used for platelet-rich plasma (PRP) preparation. PRP preparation requires a two-cycle centrifugation procedure, leading to a longer processing time.
الموضوعات
Humans , Bone Density , Bone Regeneration , Centrifugation , Cone-Beam Computed Tomography , Dental Implants , Fibrin , Intercellular Signaling Peptides and Proteins , Plasma , Platelet-Rich Plasmaالملخص
Successful placement of dental implant into fresh extraction socket in single rooted tooth region has been reported. In cases of immediate implant placement in the single rooted tooth, initial primary stability is important to achieve predictable outcome. It is also suggested that the implant should be placed into minimum of 3 mm of solid bone apical to extraction site. The single stage approach preserves site morphology by protecting and supporting existing hard and soft tissues. Clinical success appears to be attributed to several important features of the technique which will be discussed in this case report. In the case presented, clinical and radiographic findings after implant placement confirmed a satisfactory treatment result.
الملخص
Este trabalho demonstra um caso clínico em que três raízes restauradas com coroas dentossuportadas foram perdidas devido a diferentes fatores fratura radicular vertical invasão de espaço biológico, cárie radicular e doença periodontal e substituídas por implantes dentários na mesma sessão da exodontia, com colocação de coroas provisórias imediatas e preenchimento dos espaços com osso xenógeno particulado. Novas coroas definitivas foram instaladas após dez meses, reestabelecendo a função mastigatória. Podemos considerar, de acordo com os resultados obtidos, que o protocolo apresentado foi adequado no caso relatado, com bons resultados no controle clínico e radiográfico em três anos de acompanhamento.
This paper presents a clinical case where three tooth-supported metalloceramic crowns failed due vertical root fracture, biologic width problems, and caries/periodontal disease, respectively. All elements were replaced at the same session by immediate-loaded dental implants and provisional crowns. The remaining spaces between implants and native bone were filled with particulate xenograft material. New definitive crowns were delivered 10 months later to reestablish masticatory function. According to the obtained results, one can consider that the presented protocol was adequate with excellent clinical and radiographic aspects over a three-year follow-up period.