Impact of dentofacial deformity on the chance of being hired for a job.

Objective: This study aimed to determine the impact of dentofacial deformity on an individual's chances of being hired for a hypothetical job involving customer service. Materials and methods: Face photographs (frontal and lateral) of 15 patients with moderate to severe dentofacial deformity, taken before and after orthodontic-surgical correction, were selected and randomized between two different questionnaires. In addition, five patients without dentofacial deformity were used as controls in both questionnaires. These questionnaires were taken by adults responsible for hiring personnel to work in commerce and business activities, graduates or postgraduates in business administration, with experience in recruiting and hiring personnel. The evaluation took place using a Likert scale with values ranging from 0 to 10 (in which 0 corresponded to complete disagreement and 10 to complete agreement), considering the following variables in a first impression judgment: honesty, intelligence, productivity at work, and hiring chance. Data were tabulated and statistical analysis was performed using a linear regression model for the explanatory variables that showed statistical significance in the analysis of variance (ANOVA). Effect size through Cohen's d has been corrected for all comparisons performed. Results: All re-examined domains demonstrated statistical differences even when included in a multivariate model (p < 0.05), with lower mean values for those requiring pre-treatment (presenting deformity), although the effect size was small for all comparisons. Conclusion: Dentofacial deformity influenced the hiring chance, although not appearing to be a preponderant factor for hiring, acting as a tiebreaker among the candidates adopted.

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.

Mutations in the osteoprotegerin-encoding gene are associated with temporomandibular joint ankylosis.

OBJECTIVE: This study aimed to investigate genetic variations in the osteoprotegerin-encoding gene (TNFRSF11B) in patients with temporomandibular joint ankylosis (TMJA). STUDY DESIGN: The sample comprised 17 patients diagnosed with TMJA, of both sexes with ages ranging from 6 to 57 years old. TNFRSF11B mutational analysis was performed using the Sanger sequencing method with DNA extracted from oral cells, and the functional impact prediction of the variants was assessed using bioinformatic analysis. RESULTS: Sequencing analysis identified 15 (88.23%) patients that presented at least 1 genetic variant in TNFRSF11B. The mutation rs202090603 (p.E33K) was found in 6 individuals, and rs140782326 (p.V281M), rs11573942 (p.L295), and rs1375250340 (p.I389T) were identified in 1 subject each. According to the pathogenicity potential of mutations, 3 variants were considered of low impact (rs2073618, rs202090603, and rs2228568) and 3 as disease causing (rs140782326, rs11573942, and rs1375250340). The variant rs202090603 (p.E33K) was found in the first cysteine domain with differences in the loop positions of p.E33K mutated the 3D structure of osteoprotegerin. CONCLUSION: Two polymorphisms (rs2073618 and rs2228568) and the mutations rs202090603 (p.E33K), rs140782326 (p.V281M), rs11573942 (p.L295), and rs1375250340 (p.I389T) in the TNFRSF11B gene may be associated with TMJA.

Use of Lasers and Piezoelectric in Intraoral Surgery.

Laser therapy has been delivering good results for more than 30 years. Therapeutic effects are seen due to its ability to stimulate cell proliferation, revascularization, cell regeneration, local microcirculation, and vascular permeability; leading to edema reduction and analgesic effects. The piezoelectric system has been used in several surgeries recently, following the trend of minimally invasive surgery. The system consists of crystals undergoing deformation when exposed to electric current, resulting in an oscillating movement with ultrasound frequency. In oral surgery it is used in orthognathic and temporomandibular joint procedures, alveolar corticotomies, tumor excision, bone grafts, third molars, and dental implants.

Atrophic jaw fracture and predictability in oral rehabilitation: case report / Fratura de mandíbula atrófica e previsibilidade na reabilitação oral: relato de caso

Introduction: The treatment of atrophic jaw fractures requires extensive knowledge by the maxillofacial surgeon. The correct diagnosis and planning optimize the possibility of oral rehabilitation towards many possible alternatives. The difficulty in repairing these fractures makes the treatment complex, in which normally invasive techniques are used. However; which give us satisfactory and predictable aesthetic-functional results. Objective: The objective of this work is to report an atrophic jaw fracture and posterior dental implants re-habilitation. Case report: A 53 years old female patient, victim of in face aggression referred to the emergency care. At the clinical examination, the patient had laceration in the upper lip region and the left side of the mandibular area, with bilateral mobility and paresis. In the oral examination, total lower and partial upper edentulism. After tomographic evaluation, a bilateral fracture of the mandibular body was confirmed, with significant bone fragments uneven. Surgery was performed with total transcervical access and use of reconstruction plate. After 90 days of follow-up, the oral rehabilitation with osseointegrated implants was performed. Conclusion: Complex atrophic mandible fractures in total edentulous patients can be treated with open reduction and stable fixation, allowing a faster return to normal function, improve of quality of life and assists in increasing safety for implant installation (AU)

Introdução: O tratamento de fraturas em mandíbula atrófica requer amplo conhecimento por parte da cirurgião bucomaxilofacial. O correto diagnóstico e planejamento otimizam a possibilidade de reabilitação, diante das muitas alternativas possíveis. A dificuldade em reparar essas fraturas torna o tratamento complexo, no qual normalmente técnicas invasivas são usadas. Entretanto, é possível alcançar resultados funcionais e estéticos satisfatórios e previsíveis. Objetivo: O objetivo de este trabalho é relatar uma fratura em mandíbula atrófica seguida de reabilitação com implantes dentários em região posterior. Relato de caso: Paciente do sexo feminino, 53 anos, vítima de agressão em face buscou o serviço de emergência. No exame clínico, observou-se laceração na região do lábio superior esquerdo com mobilidade bilateral e paralisia em região mandibular. No exame intra-oral, edentulismo total inferior e parcial superior. Após avaliação tomográfica, a fratura bilateral do corpo mandibular foi confirmada, com presença de significativos fragmentos ósseos. A cirurgia foi realizada com acesso transcervical total e uso de placa de reconstrução. Após 90 dias de acompanhamento foi iniciada a etapa de reabilitação oral com implantes osseointegrados. Conclusão: Fraturas atróficas complexas da mandíbula em pacientes desdentados totais podem ser tratados com redução e fixação estável, permitindo um rápido retorno da função, melhora da qualidade de vida, além de auxiliar no aumento da segurança no momento da instalação dos implantes (AU)

Reconstrução de maxila atrófica com enxerto proveniente de calota craniana para posterior reabilitação com implantes dentários û relato de caso / Jaw reconstruction with cranial bone graft for further rehabilitation with dental implants û case report

A atrofia maxilomandibular é uma condição que se desenvolve com o passar do tempo devido à perda precoce dos dentes, uso de próteses mal adaptadas, traumas, entre outros. É caracterizada pela reabsorção óssea severa da mandíbula e/ou maxila, com algumas consequências como falta de adaptação de próteses, deficiência mastigatória, fonética, estética e, principalmente, psicológica. Ao longo do tempo foram desenvolvidos diversos procedimentos e técnicas para solucionar esses problemas, dentre os quais destaca-se a realização de enxertias ósseas otimizando a instalação de implantes. Este trabalho tem por objetivo demonstrar a viabilidade do enxerto autógeno proveniente de calota craniana nas reconstruções maxilares através da apresentação de um relato de caso clínico, de paciente com a maxila severamente reabsorvida cujo tratamento foi realizado através dessa técnica com posterior reabilitação com implantes dentários. A enxertia óssea proveniente de calota craniana é uma alternativa viável pois apresenta pouca morbidade pós-operatória, com retorno rápido do paciente para suas atividades, pequena reabsorção óssea durante período de cicatrização, possibilidade de grande quantidade doadora de tecido ósseo e pouco índice de complicações pós-cirúrgicas.

The maxillo-mandibular atrophy is a condition that develops itself over time due to early teeth loss, ill-fitting dentures usage, and trauma, among others. It is characterized by a mandible and maxilla severe bone resorption, with consequences such as lack of denture fitting, masticatory defficiency, phonetics and aesthetics, as well as important impact over patientsÆ psychological health. Over time, several procedures and techniques have been developed in order to solve these problems. Among them, bone grafts stand out optimizing implant placement. This study aims to demonstrate the viability of autogenous bone grafts harvested from the skull for maxillary reconstruction, therefore presents a case report of a patient with severely resorbed maxilla treated with this technique and posterior implant rehabilitation. The use of cranial bone graft is a viable alternative presenting low postoperative morbidity with brief restablishment of patientÆs routine; minor bone resorption during healing period; possibility of large amounts of bone tissue donors and low post surgical complications rate.

Displasia fibrosa óssea da maxila: relato de caso

Introdução: A displasia fibrosa óssea(DFO) é uma lesão pseudoneoplásica benigna de etiologia ainda desconhecida, que aparece sob três padrões clínicos característicos, ocasionalmente superpostos. Há a forma monostótica, que atinge um único osso, a poliostótica, acomentendo vários ossos, mas nunca todos, e a poliostótica associada às pigmentações cutâneas tipo café com leite e anormalidades endócrinas, especialmente na puberdade precoce, devido ao acometimento dos ossos da face e crânio, geralmente causando deformidade, é doença de particular interesse pelo otorrinolaringologista. Será descrito um caso de portador de DFO monostótica, com diagnóstico confirmado pelo exame anatomopatológico. Relato de caso: Paciente de quarenta anos de idade, sexo masculino, cor branca, natural do Estado de Santa Catarina, procurou o Serviço de otorrinolaringologia e Cirurgia Crânio-maxilo-facial do Hospital Angelina Caron, em setembro de 2006, tendo como queixa principal, um aumento da hemiface direita, que iniciou aos doze anos de idade com evolução lenta, apresentando no momento dificuldade para adaptar a prótese dentária superior. O exame clínico nos mostrou um paciente hígido, sem patologia de base com aumento da hemiface direita na região de maxila e zigoma direitos. O exame tomográfico evidenciou aumento da densidade e volume ósseo envolvendo a hemimaxila, osso zigomático e seio maxilar direitos, com abaulamento superior de soalho orbitário direito justificando o diagnóstico de displasia fibrosa óssea monostótica. Em fevereiro de 2007, o paciente foi submetido a cirurgia para reparação funcional, onde foi realizada osteoplastia de rebordo alveolar de maxila direita por acesso intrabucal. O material removido foi enviado para exame histopatológico, confirmando o diagnóstico inicial de displasia fibrosa monostótica...