Fratura de mandíbula: análise de 50 casos cirúrgicos em um hospital escola / Jaw fracture: analysis of 50 surgical cases in a teaching hospital

Introdução: A mandíbula é o maior e mais forte dos ossos da face. Em razão de sua topografia, apresenta vulnerabilidade nos traumas. A análise de dados sobre as fraturas de mandíbula se mostram fundamentais para auxiliar no tratamento e em políticas de saúde pública. O objetivo desse estudo é realizar um levantamento epidemiológico de fraturas mandibulares tratadas cirurgicamente. Método: Triagem através do sistema de informação hospitalar, buscando pacientes submetidos a cirurgia para fratura de mandíbula realizadas em um hospital escola pela equipe de cirurgia plástica, em Campinas-SP, de abril de 2015 a abril de 2020. Foram, então, coletados dados por meio da análise de prontuários. Resultados: Foram incluídos 50 pacientes, sendo 90% do sexo masculino. A média de idade foi 30,7 anos. A etiologia predominante foi acidente automotivo e a região mais fraturada na mandíbula foi a parassínfise. A mediana de tempo entre o trauma e cirurgia foi de 19 dias. Onze (22%) pacientes apresentavam alguma comorbidade. Quatorze pacientes (28%) foram internados em Unidade de Terapia Intensiva (UTI) e 42% operaram com outra especialidade além da Cirurgia Plástica. Dez (20%) pacientes apresentaram alguma complicação da cirurgia, sendo a mais comum a deiscência de ferida operatória. Conclusão: Houve predominância entre homens jovens e de acidentes de trânsito como etiologia. As fraturas foram localizadas preferencialmente na região da parassínfise e foram tratadas por meio de fixação interna rígida. Os elevados índices de internação em UTI, lesões associadas e realizações de procedimentos cirúrgicos por outras especialidades evidenciam a gravidade dos pacientes assistidos no serviço.

Introduction: The mandible is the largest and strongest of the bones in the face. Due to its topography, it is vulnerable to trauma. Data analysis on mandible fractures is fundamental for treatment and public health policies. This study aims to conduct an epidemiological survey of surgically treated mandibular fractures. Method: Screening through the hospital information system, seeking patients undergoing surgery for jaw fracture performed at a teaching hospital by the plastic surgery team in Campinas-SP from April 2015 to April 2020. Data were then collected through analysis of medical records. Results: 50 patients were included, 90% male. The average age was 30.7 years. The predominant etiology was an automobile accident, and the most fractured region in the mandible was the parasymphysis. The median time between trauma and surgery was 19 days. Eleven (22%) patients had some comorbidity. Fourteen patients (28%) were admitted to the Intensive Care Unit (ICU), and 42% underwent surgery with another specialty besides Plastic Surgery. Ten (20%) patients had some complication of the surgery, the most common being surgical wound dehiscence. Conclusion: There was a predominance among young men and traffic accidents as etiology. Fractures were preferably located in the parasymphysis region and were treated using rigid internal fixation. The high rates of ICU admission, associated injuries, and surgical procedures carried out by other specialties demonstrate the severity of the patients assisted in the service.

Maxillofacial Fractures in Pondicherry, India: An Eight?Year Single Centre Retrospective Study

Background: The purpose of the present study was to analyze the etiology, incidence, pattern, and treatment modalities of patients with maxillofacial fractures treated at the Department of Dentistry of a medical college in Pondicherry during the period between June 2011 and June 2019. Materials and Methods: A retrospective epidemiological study of 277 patients treated for maxillofacial fractures between June 2011 and June 2019 was performed. Data regarding age, gender, etiology, site of the fracture, time of injury, presence of associated injuries, treatment modalities, and complications were recorded. Results: A total of 491 maxillofacial fractures were seen in 277 patients. These were 261 males (94.2%) and 16 females (5.8%) with a male to female ratio of 16.3:1. Most of the patients 79.8% were in the age group of 11 to 40 years. Most common cause of injury was Road Traffic Collisions (RTCs; 62.1%), followed by fall (20.2%), assault (14.4%) and others (3.3%). Fractures of the mandible (52.3%) and zygomatic complex (18.9%) were the most common maxillofacial fractures reported in our study. 196 patients sustained associated injuries with a prevalence of soft tissue injury (61.2%). Majority of fractures were treated with open reduction and internal fixation (ORIF; 71.9%) of patients followed by closed reduction (17.7%) and observation only (10.4%). Postoperative complications were presented in 16.8% of the patients in the study. Conclusion: RTC is the commonest cause of maxillofacial injury with a male predominance in our study. Mandibular and zygomatic complex fractures were the most common. ORIF remains the preferred method of treatment.

Efficacy of ultrasonography in diagnosis of temporomandibular joint soft tissue injury induced by mandibular fractures: randomized clinical trial / Eficácia da ultrassonografia no diagnóstico de lesões em tecidos moles da articulação temporomandibular induzidas por fraturas mandibulares: ensaio clínico randomizado

Objective: the aim of this study was to evaluate the efficacy of ultrasonography in diagnosis of tempromandibular joint soft tissue injury after mandibular osteosynthesis. Material and Methods: ten male patients (20 joint) with age ranged between 20-28 years were collected from those attending the outpatient clinic of Oral and Maxillofacial Surgery Department, Al-Kuwait Hospital, Sana'a University. Patients were divided into two groups according to the number of fracture line in the mandible. All patients were randomly assigned to diagnosis of the soft tissue changes of temporomandibular joint by either ultrasonography or magnetic resonance image preoperatively, after 2 weeks and 3 months postoperatively. Results: preoperatively, there was moderate agreement between ultrasonography and magnetic resonance image in the diagnosis of abnormal findings in both groups, the difference was not statistically significant. In group I, ultrasonography of the temporomandibular joint didn't detect any abnormal findings after mandibular osteosynthesis, meanwhile, magnetic resonance image recorded abnormal findings 40% and 20% after 2 weeks and 3 months respectively. In group II, the diagnosis of abnormal findings was the same (80%) pre and postoperatively by using magnetic resonance image however, the percent ofabnormal findings was reduced from 60% preoperatively to 40% postoperatively by using ultrasonography. Conclusion: the ultrasonographic image was not able to identify or diagnosis the disc position changes after indirect trauma. However, it had to some extent a role in the identification and diagnosis of effusion in temporomandibular joint. (AU)

Objetivo: o objetivo deste estudo consistiu em avaliar a eficácia da ultrassonografia no diagnóstico de lesões nos tecidos moles da articulação temporomandibular após a osteossíntese mandibular. Material e Métodos: dez pacientes do sexo masculino (no total de 20 indivíduos) de idades entre 20 e 28 anos foram selecionados do serviço ambulatorial do Departamento de Cirurgia Oral e Maxilo-facial, Hospital Al-Kuwait, Universidade de Sana'a. Os indivíduos incluídos foram distribuídos em dois grupos, de acordo com o número de linhas de fratura presentes na mandíbula. Todos os pacientes foram aleatoriamente alocados e divididos, com base no diagnóstico das alterações dos tecidos moles da articulação temporomandibular por ultrassonografia ou ressonância magnética no pré-operatório e em intervalos de 2 semanas e 3 meses no pós-operatório. Resultados: no pré-operatório, houve uma concordância moderada entre a ultrassonografia e a ressonância magnética no diagnóstico de achados anormais em ambos os grupos; a diferença não foi estatisticamente significativa. No grupo I, a ultrassonografia da articulação temporomandibular não revelou quaisquer achados anormais após a osteossíntese mandibular, enquanto a ressonância magnética registou achados anormais em 40% e 20% dos casos após 2 semanas e 3 meses, respectivamente. No grupo II, o diagnóstico das anormalidades por ressonância magnética foi o mesmo (80%) no pré e pós-operatório; contudo, a percentagem de casos anormais por ultrassonografia foi reduzida de 60% no pré-operatório para 40% no pós-operatório. Conclusão: a imagem ultrassonográfica não foi capaz de detectar alterações de posição do disco após trauma indireto. Entretanto, em certa medida, contribuiu para a identificação e diagnóstico de efusão na articulação temporomandibular (AU)

Etiopathogenesis of pathological mandibular fracture: literature review and case reports / Etiopatogenia da fratura patológica mandibular: revisão de literatura e relatos de caso

ABSTRACT Pathological mandibular fractures are fractures induced by pathologies affecting the mandible's base or those resulting from forces that would typically be tolerable if the bone were not compromised by an underlying condition. These fractures often present complex clinical scenarios owing to the compromised bone integrity caused by the pathology, which impedes resolution. Systemic changes may also diminish the capacity for bone neoformation, significantly limiting therapeutic options. Therefore, this study aimed to provide a comprehensive review of the published scientific literature and present clinical cases related to the treatment and prevention of pathological mandibular fractures. A literature review was conducted, focusing on case reports indexed in the MEDLINE and SCIELO databases using specific keywords as descriptors. The search yielded ten articles, which described the etiopathogenesis, classified as infectious, idiopathic, benign pathology, malignant pathology, and iatrogenic. The literature suggests that prioritizing surgery to address the underlying local pathology is crucial. Managing the remaining bone defect optimally may necessitate multiple surgical interventions. Furthermore, preventive measures should be implemented in potential iatrogenic cases. Notably, fractures of malignant, idiopathic, hereditary, and metabolic etiologies may indicate the initial manifestation of diseases.

RESUMO As fraturas patológicas mandibulares são aquelas provocadas por patologias que envolvem a base da mandíbula ou que ocorrem por forças de carga que seriam toleradas de forma normal caso o osso não fosse enfraquecido subjacentemente. Os pacientes com fraturas patológicas de mandíbula tendem a apresentar situações clínicas complexas, com limitação ou comprometimento ósseo causado pela patologia que dificulta a sua resolução bem como diminuição da capacidade de neoformação óssea pelas alterações de ordem sistêmica que podem restringir significativamente as alternativas terapêuticas. Desta forma, o objetivo do presente trabalho é revisar a literatura científica publicada e apresentar casos clínicos sobre tratamento e prevenção de fratura patológica mandibular. Uma revisão de literatura foi realizada a partir de relatos de caso indexados nas bases de dados MEDLINE e SCIELO com palavras-chave utilizadas de acordo com seus descritores específicos. A pesquisa resultou em dez artigos descrevendo como etiopatogenia causas classificadas como de origem infecciosa, idiopática, patologia benigna, patologia maligna e iatrogenia. A literatura preconiza que a cirurgia para o tratamento da patologia local seja a prioridade e que o defeito ósseo remanescente seja administrado da melhor maneira que o caso permitir, podendo ser corrigido em mais de um tempo cirúrgico. Os possíveis casos iatrogênicos devem ter condutas preventivas. Fraturas de etiologia maligna, idiopática, hereditária e metabólica apresentam a possibilidade de sinalização da primeira manifestação das doenças.

Alcohol consumption and maxillofacial fractures in times of Covid-19: a cross-sectional study in a cuban university hospital / Consumo de alcohol y fracturas maxilofaciales en tiempos de Covid-19: un estudio transversal en un hospital universitario cubano

Introduction: The consumption of alcoholic beverages reduces the body's ability to deal with dangerous situations and exposes people to trauma. Objective: To determine the association between the consumption of alcoholic beverages and the characteristics of maxillofacial fractures treated at a Cuban university hospital in the context of COVID-19. Material and Methods: An observational, analytical, and cross-sectional study was carried out in the Maxillofacial Surgery unit at the "Carlos Manuel de Céspedes" General University Hospital during the year 2020. Prevalence ratios, 95% confidence intervals and p-values were obtained using generalized linear models. Results: In 58.23% of the cases, fractures were related to the consumption of alcoholic beverages. The fundamental etiology was interpersonal violence (47.75%), regardless of the consumption of alcoholic beverages. There was a prevalence of patients with nasal fractures (n=98; 55.06%), among which, 35.71% had consumed alcoholic beverages at the time of the trauma. Being male (p=0.005), the lack of university studies (p=0.007), the need for surgical treatment (p<0.001), the fractures of the zygomaticomaxillary complex (p=0.023), and the traumas that occurred during the weekends (p<0.001) or during the month of June (p=0.029) were factors associated with a higher frequency of fractures related to the consumption of alcoholic beverages. There was a lower frequency of fractures associated with alcohol consumption during the months of January (p=0.006) and March (p=0.001). Conclusion: Six out of ten cases were under the influence of alcoholic beverages. There was a greater number of young and male patients, mainly due to interpersonal violence.

Introducción: La ingestión de bebidas alcohólicas disminuye la capacidad del organismo para enfrentar situaciones de peligro y lo predispone a sufrir traumatismos diversos. Objetivo: Determinar la asociación entre el consumo de bebidas alcohólicas y las características de las fracturas maxilofaciales atendidas en un hospital universitario cubano en el contexto de la COVID-19. Material y Métodos: Estudio observacional, analítico y transversal realizado en el servicio de Cirugía Maxilofacial del Hospital General Universitario "Carlos Manuel de Céspedes" durante el 2020. Se obtuvieron razones de prevalencia, intervalos de confianza a 95% y valores p mediante modelos lineales generalizados. Resultados: En el 58.23% de los casos las fracturas se relacionaron con la ingestión de bebidas alcohólicas. La etiología fundamental fue la violencia interpersonal (47.75%), independientemente del consumo o no de bebidas alcohólicas. Predominaron los pacientes con fracturas nasales (n=98; 55.06%), en los que el 35.71% había consumido bebidas alcohólicas en el momento del trauma. El sexo masculino (p=0.005), la carencia de estudios universitarios (p=0.007), la necesidad de tratamiento quirúrgico (p<0.001), las fracturas del complejo cigomático-maxilar (p=0.023), los traumas sucedidos durante los fines de semanas (p<0.001) o durante el mes de junio (p=0.029) fueron factores asociados a una mayor frecuencia de fracturas relacionadas con el consumo de bebidas alcohólicas. Hubo menor frecuencia de fracturas asociadas a este consumo durante los meses de enero (p=0.006) y marzo (p= 0.001). Conclusión: Seis de cada diez casos estuvieron bajo los efectos de la ingestión de bebidas alcohólicas. Existió una mayor afectación de pacientes jóvenes, masculinos, a causa principalmente de la violencia interpersonal.

Fatal necrotizing fasciitis following a non-treated mandibular fracture: case report / Fasciíte necrotizante fatal devido a fratura mandibular não tratada: relato de caso

ABSTRACT Necrotizing fasciitis is a rare and severe infection characterized by extensive and quickly progressing necrosis of the subcutaneous tissue and muscle fascia associated with high mortality rates in the head and neck region. We present a case of fatal necrotizing fasciitis due to an untreated mandibular fracture. Eight days after the trauma, the patient was admitted to the hospital and died on the sixth day of hospitalization.

RESUMO Fasciite necrosante é uma infecção rara e grave caracterizada por necrose extensa e de rápida progressão do tecido subcutâneo e fáscia muscular associada a altas taxas de mortalidade na região da cabeça e pescoço. Apresentamos um caso de fasciite necrosante fatal devido a uma fratura mandibular não tratada. Oito dias após o trauma, o paciente deu entrada no hospital e faleceu no sexto dia de internação.

The retromandibular transparotid approach vs. retromandibular retroparotid approach for the mandibular condyle: our clinical experience

Aim: The mandible is regarded as a frequently fractured bone in patients who present with maxillofacial trauma accounting for almost 15.5% to 59% of all facial fractures. Managing condylar trauma has remained to be a point of contention amongst experts, regardless of the advances in surgical modalities and methodologies, and the treatment plan is often determined by the preference and the experience of the surgeon. There exist various approaches in the literature, each with its own specific benefits and drawbacks. With this study, we aimed to evaluate the prevalence of post-operative complications in patients who experienced ORIF by means of the retromandibular approach, by comparing the outcomes of one group having undergone transparotid surgery, with another that underwent retroparotid surgery. Methods: An experimental trial was undertaken. Convenience sampling was done from among the cases of condylar neck and base fracture visiting the department of OMFS, Dow University of Health Sciences from January 2017 to December 2019. An overall 26 patients were divided into 2 groups of 13 members each; one was managed using Open Reduction Internal Fixation (ORIF) by means of a retromandibular transparotid approach while the other group was treated with ORIF by means of a retromandibular retroparotid approach. A 6 month follow-up was done to assess range of active motion, occlusion, and complications such as deviation/deflection, neural injury, infections, sialocele, salivary fistulae and Frey's syndrome in both groups. Results: There was no statistically significant difference between the two groups in terms of inter-incisal opening, right and left lateral movements, or protrusion. One patient in the retroparotid group had deviation on mouth opening (7.69%), while one in the transparotid group reported with infection (7.69%), and 2 developed post operative seromas (15.38%). None had persisting facial nerve palsy at 6 months. Conclusion: We find no significant disparity between the 2 approaches at a follow-up of 6 months; therefore, the primary determining factor for selection of either technique is surgeon preference and appropriate case selection

Retrospective study of sports-related maxillofacial fractures in a Brazilian trauma care center

Aim: Maxillofacial fractures occur frequently in the general population, and sports-related fractures represent some of these cases. However, few studies have been carried out in Brazilian populations aimed at sports-related maxillofacial fractures. This study assessed the demographic and fracture characteristics of patients with sports-related maxillofacial fractures who were seen at a Brazilian trauma care center. Methods: Medical records of patients with a history of sports-related maxillofacial fractures treated between January 2018 and December 2019 were retrospectively evaluated. Personal data, fracture characteristics, sport type, treatment performed and need for hospitalization were collected. The data were subjected to statistical analyses with likelihood ratio test using the Statistical Package for Social Sciences (SPSS) 25.0 (p ≤ 0.050). Results: Forty cases (4.96% of the total) of facial fractures were included. The mean age was 24.9 (± 9.8) years, with a predominance of males (92.5%). The use of protective equipment was rare. The most frequently involved sport modality was soccer (47.5%), followed by cycling (27.5%). The most frequent fracture location was nose (45%), followed by mandible (25%) and zygomatic complex (17.5%). Soccer was responsible for most nose fractures (61.1%), while cycling caused the majority of mandibular fractures (60%). Conservative treatment predominated (60%). There was only a significant difference between fracture location and the need for hospitalization (p = 0.021). Conclusion: Patients with sportsrelated maxillofacial fractures were typically young adult males, the injury was more often located in the nose and mandible and related to soccer or cycling. The use of protective equipment must be reinforced

Feasibility of three-dimensional CT reconstruction in assessing mandibular fractures: a survey among oral surgeons and dental maxillofacial radiologists

Aim: Evaluation of the reliability of 3D computed tomography (3D-CT) in the diagnosis of mandibular fractures. Methods: A cross-sectional, quantitative and qualitative study was carried out, through the application of a questionnaire for 70 professionals in the area of Oral and Maxillofacial Surgery and Radiology. 3D-CT images of mandibular fractures were delivered to the interviewees along with a questionnaire. Participants answered about the number of traces, the region and the type of fracture. The correct diagnosis, that is, the expected answer, was based on the reports of a specialist in oral and maxillofacial radiology after viewing the images in the axial, sagittal and coronal sections. The resulting data from the interviewees was compared with the expected answer and then, the data was analyzed statistically. Results: In the sample 56.9% were between 22 and 30 years old, 52.8% were oral and maxillofacial surgeons (OMF), 34.7% were residents in OMF surgery and 12.5% OMF radiologists. Each professional answered 15 questions (related to five patients) and 50.8% of the total of these was answered correctly. Specialists in Oral and Maxillofacial Surgery and Traumatology correctly answered 53.9%. Interviewees with experience between 6 and 10 years correctly answered 58.2%. In identifying fracture traces, 46.1% of the questions were answered correctly. In terms of location, 5.6% of interviewees answered wrongly while 14.2% answered wrongly regarding classification. Conclusion: 3D computed tomography did not prove to be a reliable image for diagnosing mandibular fractures when used alone. This made necessary an association with axial, sagittal and coronal tomographic sections

Effect Of TXA On Intraoperative Blood Loss In Mandibular Fracture Surgeries A Prospective, Double Blinded Randomized Clinical Trial

Background:The aim of this doubleblind prospective study was to determine whether administering 1 gm Tranexamic Acid (TXA) would the intraoperative blood loss during the Open Reduction and Internal Fixation (ORIF) surgery of mandibular fracture via the intraoral approach operated under local anesthesia (LA).Material And Methods:20 patients who underwent ORIF surgery ofmandibular fractures under LA were randomly allocated to two groups. Study group was administered 1 gm TXA diluted in a 500 ml Ringer Lactate solution one hour before thesurgery. Control group did not receive any such IV infusion. All the surgeries were performed by the same surgeon.Result:Mean difference in Intraoperative blood loss between the two groups was found out to be statistically insignificant. Effect of age, gender or site of fracture was also found out to be insignificant. Conclusion:There is not much effect of TXA on intraoperative blood loss during ORIF of a mandibular fracture via the intraoral approach. Even without tranexamic, if area is infiltrated with adrenaline, proper flap reflection and tissue handling technique is used, and vital structures avoided; blood loss will be minimal.

Fracturas Mandibulares Conminutadas por Impacto de Proyectil Balístico: Resultados Clínicos de Tratamiento Con Método de Fijación Alternativo

RESUMEN: Las fracturas mandibulares conminutadas por impacto de proyectil balístico son un desafío terapéutico debido a la presencia de múltiples fragmentos óseos y el compromiso a nivel de periostio, plano muscular y mucoso. Su tratamiento inicial requiere de una estabilización de las urgencias médico - quirúrgicas y posteriormente tratar los segmentos óseos fracturados. La fijación externa con tutores mandibulares permite estabilizar los segmentos mandibulares de forma cerrada manteniendo así la viabilidad de los fragmentos sin interrumpir su suministro de sangre. El objetivo de este trabajo es presentar los resultados post operatorios obtenidos en tres casos clínicos de pacientes con diagnóstico de fractura mandibular conminutada por trauma por impacto de proyectil balístico, tratados por un método alternativo a los tutores de fijación externa convencional.

ABSTRACT: Comminuted mandibular fractures from ballistic missile impact are a therapeutic challenge due to the presence of multiple bone fragments and the involvement of periosteum, muscle and mucous membrane. Their initial treatment requires emergency medical and surgical stabilization and later treatment of the fractured bone segments. External fixation with mandibular stakes makes it possible to stabilize the mandibular segments in a closed manner, thus maintaining the viability of the fragments without interrupting their blood supply. The aim of this work is to present the post-surgical results obtained in three clinical cases of patients with diagnosis of comminuted mandibularfracture by ballistic missile impact, treated by an alternative method to the conventional external fixation tutors.

Reconstrução microcirúrgica de mandíbula com retalho osteocutâneo de fíbula, com auxílio de modelo 3D, em paciente vítima de trauma: relato de caso / Mandible microsurgical reconstruction with osteocutaneous fibular flap, with the assistance of a 3D model, in a trauma patient: case report

Trata-se de um relato de caso de reconstrução microcirúrgica de mandíbula com retalho osteocutâneo de fíbula em um paciente de 16 anos, vítima de agressão com projétil de arma de fogo e trauma contuso em face, acarretando em fratura cominutiva de mandíbula, com perda de elementos dentários e lesões extensas de partes moles. Após tratamento da fase aguda, optou-se pela reconstrução microcirúrgica com retalho livre de fíbula, devido à extensão do defeito mandibular e possibilidade de reabilitação dentária. O uso de modelos tridimensionais da mandíbula e fíbula foram excepcionalmente úteis para tornar possível o melhor planejamento cirúrgico das áreas de osteotomia, com diminuição do tempo de isquemia do retalho da cirurgia.

This is a case report of the mandible microsurgical reconstruction with osteocutaneous fibular flap in a 16-year-old patient. A victim of an assault with a firearm projectile and blunt trauma to the face, resulting in a comminuted mandible fracture, loss of dental elements, and extensive soft tissue injuries. After treatment of the acute phase, we chose microsurgical reconstruction with a free fibula flap due to the mandibular defect's extension and the possibility of dental rehabilitation. The use of three-dimensional models of the mandible and fibula was exceptionally helpful in making the best surgical planning of the osteotomy areas, decreasing the surgery flap's ischemia time.

Occurrence and remission of loss of sensitivity of inferior alveolar nerve in mandibular fractures

ABSTRACT Purpose: to evaluate the occurrence of loss of sensitivity of the inferior alveolar nerve, and to monitor the remission of this change in patients with mandibular fractures subjected to surgical treatment. Methods: patients with mandibular fractures, surgically treated within one year, were prospectively evaluated. Data regarding etiology, fracture location, type and displacement, and surgical access, were obtained. The tactile and thermal tests were applied at eighteen points in the mental region, within a period of six months. Statistical tests were applied to compare the categories of variables and the period of observation (p ≤ 0.050). Results: during the study, 37 patients were included. There were 24 bilateral and 13 unilateral fractures. Sensory changes occurred in 56.8% of the patients in the preoperative period, in 83.8% of the patients, in the postoperative period, and 35.1% of the patients presented complete remission during the final period of the study. Conclusion: sensory changes occurred in about half of the patients, due to the fracture, increasing greatly in the postoperative period, with complete remission in about one third of the cases. The fracture type, degree of displacement and surgical access type influenced the occurrence of sensory alterations.

Fixação funcionalmente estável no tratamento de sequela de fratura cominutiva de mandíbula por PAF / Functionally stable fixation in the treatment of comminuted jaw fracture by firearm projectile

Introdução: em traumas de alta energia por projéteis de arma de fogo (PAF), pode ocorrer a cominuição da mandíbula. Quando não identificadas ou tratadas de maneira equivocada, essas injúrias podem comprometer a saúde do indivíduo, com graves complicações estéticas e funcionais. Objetivo: o objetivo deste trabalho é relatar um caso de tratamento cirúrgico de sequela de ferimento por arma de fogo com fratura cominutiva em região de sínfise mandibular. Relato do caso: paciente procurou o serviço de cirurgia e traumatologia bucomaxilofacial após tratamento cirúrgico insatisfatório de fratura mandibular por PAF. Observou-se clinicamente mobilidade em manipulação, exposição óssea e drenagem purulenta. Na tomografia, observou-se gap ósseo, descontinuidade na base mandibular e material de osteossíntese inadequado. Foi proposta uma abordagem cirúrgica para instalação de placa de reconstrução do sistema 2.4 mm. Em acompanhamento pós-operatório, o paciente evoluiu com abertura bucal funcional e satisfatória, sem mobilidade nos fragmentos ósseos, arcabouço mandibular restabelecido e adequado posicionamento do material de fixação. Considerações finais: os casos de cominuição óssea apresentam características individuais que devem ser levadas em consideração em seu manejo. Nesses casos, a escolha do material de fixação é fundamental para o sucesso terapêutico e o uso de prototipagem soma para uma condução satisfatória do caso, garantindo menor tempo cirúrgico e melhor adaptação da placa. (AU)

Introduction: in high energy traumas caused by firearm projectiles may occur comminutive mandibular fractures. When it is not identified or inappropriately treated, these injuries can compromisse the individual's health, with serious aesthetics and funcional complications. Objective: the aim of this study is report a case of surgical treatment of sequelae from firearm injury with comminutive fracture in the region of mandibular symphysis. Case report: patient sought the service of Oral and Maxillofacial Surgery and Traumatology after 1 month of unsatisfactory surgical treatment of a mandibular fracture caused by firearm projectile. Clinical examination revealed mobility to manipulation and bone exposure with purulent drainage. Computed tomography of the face shows bad fracture consolidation in the anterior region of the mandible with bone gap and discontinuity in the mandibular base and inadequate and poorly positioned osteosynthesis material. It was then proposed a new surgical approach with instalation of the reconstruction plate of 2.4mm locking system. In postoperative follow-up, the patient evolved with a functional and satisfactory mouth opening, with no mobility in bone fragments, restored mandibular framework and adequate positioning of the fixation material. Final considerations: the cases of comminutive bone fractures show particular features that should be considered in their handling. In these cases, the choice of the fixation material is critical to therapeutic success and the use of prototyping sum for a satisfactory conduction of the case, ensuring shorter surgical time and better adaptation of the plate.(AU)

Evaluation of 2 mm locking plates for treating mandibular fractures

Background: The progressive development in the trauma management has now paved way to the use of miniplates for the treatment of mandibular fractures. We present a case series of twenty-five patients treated with miniplates for the mandibular fractures.Methods: The study was done on twenty-five patients diagnosed clinically and radiographically with mandibular fractures and attending the outpatient department of Oral and Maxillofacial surgery of a tertiary care hospital in Jaipur city. The selected cases were treated by open reduction and internal fixation under general anesthesia. 2.0-mm titanium locking mini plates were used as a method of internal fixation. The patients were evaluated for the location, type and number of fractures, time required for adaptation and fixation of single four hole 2.0-mm locking plate, complications during surgery, pre and post-surgical occlusal relationship, adequacy of reduction on postoperative radiograph and any post-surgical complications requiring a secondary surgical intervention.Results: Majority were in the age group of 21-30 years (72%) with a mean age of 26.6 years. Among these, there were 23(92%) male and 2(8%) female patient. Maximum (28%) patients were of symphysis and angle fracture followed by symphysis and condylar (25%), while only 2% cases were of Para symphysis and condylar. The mean time taken for single plate adaptation and fixation was 11.34 minutes for symphysis fracture, 14.12 minutes for parasymphysis fracture, and 11.56 minutes for body fracture and 18.90 minutes for angle fractures.Conclusions: The locking miniplates in mandibular fractures is efficacious enough to appreciate early recovery of normal jaw function, uneventful healing and good union at the fracture site with minimal weight loss due to early reinstatement of masticatory function.

Pulmonary functions of patients with isolated mandibular fractures: a preliminary report

OBJECTIVES: The aim of this study was to evaluate pulmonary function in patients with mandibular fractures and to determine the pattern of pulmonary functions in these patients.MATERIALS AND METHODS: This was a cross-sectional study of pulmonary functions in Nigerian non-smoking patients with isolated mandibular fractures managed at our health institution from December 2015 to June 2017. Forced vital capacity (FVC), forced expiratory volume in one second (FEV₁), peak expiratory flow rate (PEFR), and ratio of FEV₁ to FVC (FEV₁/FVC) were measured for all participants using a portable spirometer just before treatment. The pulmonary indices were compared with the predicted reference values for Nigerians to determine the respiratory pattern.RESULTS: Forty participants consisting of six females (15.0%) and thirty-four males (85.0%) with a female to male ratio of 1:5.7 were included in this study. The mean patient age was 34.5±13.1 years (range, 17–63 years). The mean FVC, FEV₁, FEV₁/FVC, and PEFR were 3.8±1.2 L, 3.0±1.0 L, 74.3%±13.8%, and 5.2±2.2 L/s, respectively. Comparison of data with predicted values revealed that 17 subjects (42.5%) had normal pulmonary function pattern while 23 subjects (57.5%) had features suggestive of obstructive and restrictive pulmonary function patterns.CONCLUSION: Isolated mandibular fractures presented with abnormal pulmonary function pattern.

Comparative Study of 3 Dimensional and Standard Miniplate in Management of Anterior Mandibular Fractures

Introduction: The aim of mandibular fracture treatment isto restore the pre-injury anatomic form and function, withparticular care to establish the occlusion. Of the varioustreatment modalities available, Champys miniplate fixation hasbecome the most widely used technique. The 3-dimensional(3D) plating for mandibular fracture treatment is relativelynew. This study was conducted to compare efficacy, stabilityand rigidity of 3-dimensional plates with that of 2mm titaniumminiplates in the surgical management of anterior mandibularfractures.Material and Methods: The study was conducted on 70patients with anterior mandbibular fractures (Symphysis andParasymphysis region). Patients were randomly divided intotwo groups, Group I (n=35) in which the patients underwentfixation by miniplates (2 nos) while in Group II (n=35), 3Dplates were used for fixation. The patients preoperative, intraoperative and post-operative clinical and radiological findingswere recorded in a proforma and were subjected to statisticalanalysis. Fisher’s Exact Test was used to compare the dataobtained from group I and group II patients.Results: Out of 70 patients, 77.14% corresponded to the agegroup of 15-30 years and 82.85% were males. Road trafficaccident (80) % was the leading cause of fracture. The timerequired to adapt and fix the miniplates was slightly more than3-D plates and results were statistically significant. Skeletaland occlusal stability was maintained in both group.Conclusion: There is no major difference in terms of treatmentoutcome in both systems, and both are equally effective inmandibular fracture treatment.

Fratura de mandíbula associada à transmigração de canino / Mandibular fracture associated to canine transmigration

Introdução: Apesar de ser considerado um assunto controverso, o tratamento de fraturas mandibulares, que envolvem terceiros molares inclusos, já se afigura como uma temática amplamente debatida na literatura. Por outro lado, poucos estudos discutem o manejo das fraturas em região de dentes inclusos anteriores8 . Nesse sentido, o presente estudo visa relatar um caso de fratura associada a um canino transmigrado em parassínfise mandibular. Relato de caso: Paciente A.S.S., sexo masculino, 43 anos e 6 meses de idade, apresentou-se à emergência do Hospital Geral do Estado da Bahia, com histórico de acidente motociclístico cursando com trauma em face. O exame de imagem constatou fratura em parassínfise mandibular bilateral, associada ao deslocamento de canino previamente impactado. Optou-se pela remoção do dente envolvido, redução e fixação óssea com miniplacas e Barra de Erich. O acompanhamento pósoperatório revelou estabilidade da mandíbula e regressão dos sinais e sintomas pré-traumáticos. Considerações finais: Ao tratar fraturas mandibulares que envolvem dentes inclusos, deve-se ponderar acerca da remoção ou manutenção desse dente. Para tanto, o cirurgião deve avaliar o grau de comprometimento da unidade dentária bem como sua importância para redução e fixação ósseas... (AU)

Introduction: Despite being a controversial subject, the treatment of mandibular fractures involving the included third molars is already a widely debated topic in the literature. On the other hand, few studies discuss the management of fractures in the region of anterior included teeth8. In this sense, the present study aims to report a case of fracture associated with a transmigrated canine in the mandibular parasphysis. Case report: Patient A.S.S., male, 46 years and 6 months old, presented to the emergency of the State General Hospital of Bahia, with a history of motorcycle accidents, coursing facial trauma. The image examination revealed bilateral mandibular parashymphisis fracture, associated with the displacement of a previously impacted canine. It was decided for removal of the involved tooth, reduction and bone fixation with miniplates and Erich Bar. Postoperative follow-up revealed jaw stability and regression of post-traumatic signs and symptoms. Final considarations: When treating mandibular fractures involving included teeth, consideration should be given to the removal or maintenance of this tooth. Therefore, the surgeon should assess the degree of impairment of the dental unit as well as its importance for bone reduction and fixation... (AU)

Evaluation of 3-Dimensional Titanium Miniplates in Mandibular Fractures

Introduction: Mandibular fractures are one of the mostcommon fractures of facial skeleton because of its prominentposition in maxillofacial region. Traditionally, surgeons haveattempted to achieve: anatomic reduction, immobilization andfixation, prevention of infection and rehabilitation of function.The aim of our study was to evaluate the following parameterslike surgical procedures, infection, hardware failure, wounddehiscence, neurosensoery deficit, and fate of implant.Material and methods: The present study was conducted inthe Department of Oral and Maxillofacial Unit, after obtainingethical clearance. A total of 20 patients were selected toevaluate the usefulness of 3-Dimensional titanium miniplatesin fixation of mandibular fractures. After surgical exposure,either straight 6 holed or 8 holed or curved 8 holed 3-Dtitanium miniplates are placed. The patients were in the agegroup of 21-40 years. Etiology of trauma in most of the patientwas Road traffic accident (70%).Result: The frequency of fracture site being mainlyparasymphysis fracture (50%). Two patients had infection(10%). None of the patients had malunion or nonunion. The3-Dimensional titanium miniplates are suitable for fixation ofsimple mandibular fractures and an easy to use alternative toconventional miniplates.Conclusion: This plate is associated with good stability offracture segments and low infection rate