Intraosseous benign peripheral nerve sheath tumor of the jaws: report of 4 new cases and a comprehensive literature review.

Benign peripheral nerve sheath tumors (BPNSTs) are a vast, common, heterogeneous group of lesions that are often diagnostically challenging. The head and neck region is recognized as the second most common location for these lesions, especially the tongue. However, BPNSTs occurring centrally within the jaw bones are exceedingly rare. To date, approximately 161 cases of intraosseous BPNSTs have been reported in the jaws. This group mainly includes the relatively more common neurofibromas and schwannomas, and the less common perineuriomas and hybrid forms. Unlike soft tissues, schwannomas are the most common BPNSTs occurring within the jaws, followed by neurofibromas and perineuriomas. These neoplasms can present as a well-defined unilocular lesion or as an ill-defined multilocular image, resembling several types of benign and malignant lesions of odontogenic origin. The aim of the current study was to report 4 new cases of intraosseous BPNSTs and a comprehensive literature review.

Assessment of Resorbable and Non-resorbable Fixation Systems in Sagittal Split Ramus Osteotomy: An In vitro Study.

Objective: The internal fixation has been purpose of study for many years, but there is still no consensus on the best method of fixation in relation to resistance for bilateral sagittal split ramus osteotomy (BSSO) using plates. Therefore, the aim of this study was to assess five different methods of osteosynthesis using resorbable and non-resorbable plates and screws in simulated sagittal split osteotomy (SSO) of the mandibular ramus. Materials and Methods: SSO was performed in 25 polyurethane synthetic mandibular replicas. The distal segments were moved forward 5 mm, and the specimens were grouped according to the fixation method: Inion resorbable plate, KLS resorbable plate, standard four-hole titanium miniplate (Medartis), two standard four-hole titanium miniplates (Medartis) and an adjustable titanium miniplate (Slider/Medartis). Mechanical evaluation was performed by applying compression loads to first molar using an Instron universal testing machine up to a 5 mm displacement of the segments. Resistance forces were obtained in Newtons (N), and statistical analysis was performed using the software R v. 3.5 with significance level of 0.05. Linear mixed models were used to compare the force required to move each type of plate. Results: The results showed that the resistance of SSO was better accomplished using two titanium miniplates and KLS resorbable plate showed the least resistance. However, both titanium and resorbable plates behaved similarly in small displacements, which are most commonly observed in BSSO postoperative time. Conclusion: It can be concluded that both resorbable and non-resorbable systems might offer suitable mechanical resistance in the procedures where there are no mechanical postoperative complications.

Oral dexamethasone decreases postoperative pain, swelling, and trismus more than diclofenac following third molar removal: a randomized controlled clinical trial.

PURPOSE: The aim of this study was to compare the anti-inflammatory potential of two pharmacotherapy protocols based on the parameters of pain, trismus, and swelling, after extraction of third molars. METHODS: Thirty patients selected with symmetrical impaction of third molars were submitted to surgical procedures in both sides in different times. For one group, dexamethasone was used for 3 days, and for another group diclofenac sodium was also used for the same period. The main variables analyzed were the visual analogue pain scale (VAS), but others were also analyzed such as swelling and trismus, which were submitted to statistical analysis. RESULTS: The results had no difference regarding the length of procedures (p = 0.986) and the pain in the immediate and 4-h postoperative period (p = 0.723 and 0.541). The rescue analgesic consumption was higher (p < 0.05) when using the protocol with diclofenac sodium. The variables mouth opening (p < 0.05) and swelling (p < 0.05) were significantly better when using the protocol with dexamethasone in the postoperative period. CONCLUSIONS: Medical protocol with the use of dexamethasone in the postoperative period was more effective in controlling pain, trismus, and swelling, after the extraction of third molars, when compared to diclofenac sodium.

Fibro-odontoma ameloblástico / Ameloblastic fibro-odontoma

Relato de um caso de Fibro-odontoma Ameloblástico (FOA), na região posterior de mandíbula, lado direito, numa criança do sexo masculino, com 07 anos de idade, atendida no Serviço de Cirurgia e Traumatologia Bucomaxilofacial do Hospital Governador João Alves Filho em Aracaju - SE. Radiograficamente apresentava-se como lesão radiolúcida unilocular como halo radiopaco, desde região parassinfisária até ramo mandibular, contendo massa radiopaca e germe dentário sugestivo do dente 46. Após resultado histopatológico de biópsia incisional, optou-se pela enucleação com remoção da unidade dentária envolvida e curetagem sob anestesia geral. É realizada revisão da literatura e discussão sobre os aspectos clínicos, radiográficos, histológicos e terapêuticos do FOA, bem como sua relação com o fibroma ameloblástico e odontomas. O diagnóstico diferencial é bastante complexo incluindo cistos odontogênicos e neoplasmas. Por se tratar de uma neoplasia, deve ser tratado através de enucleação evitando-se tentar salvar o dente associado, pois é possível a recorrência

Racionalizaçäo da antibioticoterapia para cirurgias de terceiros molares inferiores retidos / Rationalization of the antibiotic therapy for retained third molars surgeries

Os autores avaliaram o índice de infecçäo na reumoçäo de terceiros molares inferiores retidos em pacientes hígidos que fizeram ou näo o uso da antibioticoterapia, relacionando os resultados ao tempo cirúrgico, osteotomia e odontosecçäo