Comparison of Particulate, Block and Putty Forms of ß-tricalcium Phosphate-Based Synthetic Bone Grafts on Rat Calvarium Model.

Purpose: Bone augmentation is a necessity for atrophied alveolar ridge prior to dental implant placement. Various bone graft types and forms with different characteristics are available in the market for alveolar augmentation. Beta tricalcium phosphate (ß-TCP) is a synthetic biomaterial known as the oldest type of calcium phosphate. Studies comparing particulate, block or putty grafts are very limited. The aim of this study was to compare the particulate, block and putty forms of the same ß-TCP bone graft and analyze the efficiency in critical size calvarium defects. Material and Methods: Twenty male Wistar-Albino rats were employed for the study. Four bicortical bone defects with 5 mm diameter were created on each rat calvarium, and three defects were filled with particulate, block or putty ß-TCP graft and one defect was left empty. The animals were killed after 8 weeks. New bone formation, residual graft, loose connective tissue, condensed mesenchyme, alkaline phosphatase, proliferating cell nuclear antigen, osteocalcin were measured on the specimens. Results: Compared to block and putty forms, significantly higher new bone formation and least residual graft were observed in the particulate graft group. The residual graft was significantly higher in the block graft group than both the particulate and the putty groups. The cellular immunoreactivity of the samples in the particulate graft group was significantly higher. There was no significant difference between putty and block graft groups. Conclusion: Bone regeneration is significantly affected by the form of ß-TCP bone graft, and the particulate form was the most successful in our study.

Combined approach to treatment of advanced stages of medication-related osteonecrosis of the jaw patients / Abordagem combinada para o tratamento de estágios avançados de osteonecrose da mandíbula relacionada a medicamentos

Abstract Introduction: Increased incidence of localized osteonecrosis in the jaw bones caused by bisphosphanate use and reduced quality of life of the patients led researchers to diagnose the disease in the early period and to investigate the effective treatment modality. Objective: Treatment of medication-related osteonecrosis of the jaw patients is based on individual protocols from clinical experience, as there are no definitive treatment guidelines. In view of the lack of consensus on the effectiveness of medication-related osteonecrosis of the jaw treatments in the literature, the aim of this study was to evaluate the surgical technique described in the treatment of advanced stages of medication-related osteonecrosis of the jaw patients. Methods: Twenty-one patients affected by Stage 2-3 medication-related osteonecrosis of the jaw were treated with ultrasonic piezoelectric bone surgery for necrotic bone removing, leukocyte and platelet-rich fibrin concentrate obtained from the patient's peripheral blood and Nd:YAG laser for biostimulation. Success was assessed as the maintenance of full mucosal coverage without signs of residual infection at 1-month (T1), 3-months (T2), 6-months (T3) and 1-year (T4) after surgery. Logistic regressions were used to evaluate the association between the different independent variables and treatment outcomes. Results: Two Stage 3 patients had delayed healing at 1 month after the operation. Complete mucosal healing was achieved in all patients at the third month. Multivariate analysis demonstrated that different variables were not significantly correlated with delayed healing (p>0.05). Conclusion: The surgical protocol presented in this study shows promising results for surgical management of advanced stages of medication-related osteonecrosis of the jaw patients. HIGHLIGHTS Removal of necrotic bone is important in the treatment of medication- related osteonecrosis of the jaw. Surgical treatment is more successful than conservative treatment in advanced stages (stage 2-3) of the medication- related osteonecrosis of the jaw. Relatively less invasive and supportive treatments are recommended in patients with advanced medication- related osteonecrosis of the jaw. Patient follow-up, good oral hygiene and patient motivation increase the success rate of the treatment.

Resumo Introdução: O aumento da incidência de osteonecrose localizada nos ossos da mandíbula causada pelo uso de bisfosfonatos e a redução da qualidade de vida dos pacientes levaram os pesquisadores a diagnosticar a doença em período inicial e a investigar a modalidade de tratamento eficaz. Objetivo: O tratamento de pacientes com osteonecrose da mandíbula relacionada a medicamentos é baseado em protocolos individuais de experiência clínica, uma vez que não há diretrizes de tratamento definitivas. Considerando a falta de consenso sobre a eficácia dos tratamentos de osteonecrose da mandíbula relacionada a medicamentos na literatura, o objetivo deste estudo foi avaliar a técnica cirúrgica descrita no tratamento de estágios avançados nesses pacientes. Método: Vinte e um pacientes com osteonecrose da mandíbula relacionada a medicamentos estágio 2-3 foram tratados com cirurgia óssea piezelétrica ultrassônica para remoção de osso necrótico, concentrado de leucócitos e fibrina rica em plaquetas obtido do sangue periférico do paciente e laser Nd: YAG para bioestimulação. O sucesso foi avaliado pela manutenção da cobertura total da mucosa sem sinais de infeçcão residual em um mês (T1), 3 meses (T2), 6 meses (T3) e um ano (T4) após a cirurgia. Regressões logísticas foram usadas para avaliar a associação entre as diferentes variáveis independentes e os resultados do tratamento. Resultados: Em dois pacientes no Estágio 3, a cicatrização foi tardia em um mês após a cirurgia. A cicatrização completa da mucosa foi obtida em todos os pacientes no terceiro mês. A análise multivariada demonstrou que diferentes variáveis não se correlacionaram significativamente com o retardo da cicatrização (p > 0,05). Conclusão: O protocolo cirúrgico apresentado neste estudo mostra resultados promissores para o manejo cirúrgico de estágios avançados de pacientes com osteonecrose da mandíbula relacionada a medicamentos. DESTAQUES A remo¸cão do osso necrótico é importante no tratamento de osteonecrose da mandíbula relacionada a medicamentos. O tratamento cirúrgico é mais bem-sucedido do que o tratamento conservador em estágios avançados (estágio 2-3) de osteonecrose da mandíbula relacionada a medicamentos. Tratamentos relativamente menos invasivos e de suporte são recomendados em pacientes com osteonecrose avançada da mandíbula relacionada a medicamentos. O seguimento do paciente, uma boa higiene oral e a motivação do paciente aumentam a taxa de sucesso do tratamento.

Combined approach to treatment of advanced stages of medication-related osteonecrosis of the jaw patients.

INTRODUCTION: Increased incidence of localized osteonecrosis in the jaw bones caused by bisphosphanate use and reduced quality of life of the patients led researchers to diagnose the disease in the early period and to investigate the effective treatment modality. OBJECTIVE: Treatment of medication-related osteonecrosis of the jaw patients is based on individual protocols from clinical experience, as there are no definitive treatment guidelines. In view of the lack of consensus on the effectiveness of medication-related osteonecrosis of the jaw treatments in the literature, the aim of this study was to evaluate the surgical technique described in the treatment of advanced stages of medication-related osteonecrosis of the jaw patients. METHODS: Twenty-one patients affected by Stage 2-3 medication-related osteonecrosis of the jaw were treated with ultrasonic piezoelectric bone surgery for necrotic bone removing, leukocyte and platelet-rich fibrin concentrate obtained from the patient's peripheral blood and Nd:YAG laser for biostimulation. Success was assessed as the maintenance of full mucosal coverage without signs of residual infection at 1-month (T1), 3-months (T2), 6-months (T3) and 1-year (T4) after surgery. Logistic regressions were used to evaluate the association between the different independent variables and treatment outcomes. RESULTS: Two Stage 3 patients had delayed healing at 1 month after the operation. Complete mucosal healing was achieved in all patients at the third month. Multivariate analysis demonstrated that different variables were not significantly correlated with delayed healing (p > 0.05). CONCLUSION: The surgical protocol presented in this study shows promising results for surgical management of advanced stages of medication-related osteonecrosis of the jaw patients.

Comparison of Genial Tubercule Anatomy Based on Age and Gender.

OBJECTIVE: In our study, it was aimed to determine whether there were differences in genial tubercle dimensions depending on age and gender. METHODS: In this study, 220 cone beam computed tomography (CBCT) images of patients (110 female and 110 male) between the ages of 20-80 years were obtained from the archive of Izmir Katip Çelebi University Faculty of Dentistry. All patients were divided into decade groups according to their age, and each decade group was divided into two subgroups according to gender. The genial tubercle was defined radiologically using axial, coronal and sagittal sections as well as 3D reconstruction image with NNT software program. Sagittal, vertical and horizontal dimensions of the genial tubercle were measured and statistically analyzed. RESULTS: There was a weak negative correlation between age groups and vertical values (r=-0.142; p=0.036) whereas the correlation coefficients between age groups and sagittal and horizontal values were not statistically significant (r=-0.043; p=0.530 and r=-0.039; p=0.563). There was a strong positive correlation between vertical and sagittal values in men (r=0.705, p<0.001) and women (r=0.714, p<0.001) in the whole group. There was a weak positive correlation between horizontal and sagittal, horizontal and vertical values in men (r=0.362, p<0.001; r=0.231, p<0.001) and women (r=0.304, p<0.001; r=0.257, p=0.007) in the whole group. CONCLUSION: The vertical and horizontal dimensions of genial tubercle of men were higher than that of women. As the age of the patients increased, a decrease in the vertical values of the genial tubercle was observed.

Three-Dimensional Evaluation of the Effects of Kinesio Taping on Postoperative Swelling and Pain after Surgically Assisted Rapid Palatal Expansion.

OBJECTIVES: The purpose of the present study was to evaluate the effects of kinesio taping on pain and swelling after surgically assisted rapid palatal expansion. MATERIAL AND METHODS: A total of 21 (12 male and 9 female) patients with transverse maxillary deficiency were enrolled in the study. Kinesio taping (KT) was applied unilaterally in each patient, whereby sides of the face with KT application were included into the (a) KT group and the other sides were included into the (b) non-KT group. Changes in facial volume were evaluated on digital images using the 3dMD Face System. Pain scores were assessed at postoperative days 1, 2, 3, 4, 5, 6, and 7 using the visual analog scale (VAS). Two-way repeated measures analysis of variance and Mann Whitney U test were used for statistical analyses. RESULTS: Swelling was significantly lower in the KT group compared to the non-KT group from T0 to T1 (36.42 [SD 19.71] mm3 vs. 183.84 [SD 49.33] mm3) and was significantly greater in the non-KT group compared to the KT group from T0 to T2 (70.88 [SD 15.73] mm3 vs. 21.46 [SD 13.39] mm3) (P < 0.001 for both). The VAS scores were significantly lower in the KT group compared to the non-KT group at all time points (P < 0.05). CONCLUSIONS: The application of kinesio taping after maxillofacial surgery reduced the pain and swelling in the postoperative period. Kinesio taping can be used as an alternative to other methods that are used for the reduction of postoperative complaints.