Manejo de las fracturas maxilofaciales y sus complicaciones / Management of maxillofacial fractures and its complications

RESUMEN Antecedentes: el trauma maxilofacial corresponde a toda lesión traumática del macizo facial. Actualmente representa uno de los problemas de salud más importantes en el mundo. Nuestro objetivo es realizar un análisis de nuestra experiencia en las intervenciones realizadas en pacientes internados y sus complicaciones. Material y métodos: se realizó un estudio descriptivo, retrospectivo y observacional de 205 pacientes con fracturas maxilofaciales desde el año 2011 hasta el año 2019. Resultados: el 81,46% fueron hombres (n: 167) y el rango etario más afectado osciló entre los 21 y 30 años con el 38,54% (n:79). El accidente de tránsito 56,1% (n:115) fue el mecanismo de trauma más frecuente. Los tipos de fracturas faciales fueron: panfaciales 12,2% (n: 25), tercio superior 1,46% (n:3), tercio medio 72,2% (n:148) y tercio inferior 14,15% (n:29). Dentro del tercio superior, el 66,67% (n:2) fueron fracturas del seno frontal asociadas al hueso frontal, en el tercio medio las combinadas en un 54,73% (n:81) y en el tercio inferior, las complejas en el 34,48% (n:10). Fueron intervenidos 199 pacientes (97,07%). Solo el 11,56% (n:23) presentó alguna complicación. No se observaron complicaciones graves. Discusión: según nuestra serie, la mayoría de los pacientes fueron hombres jóvenes; la causa más frecuente, el accidente de tránsito, y el tercio medio, el más afectado, resultados estos similares a los de otros estudios publicados. El tratamiento quirúrgico fue principalmente reducción abierta y fijación con material de osteosíntesis de titanio, un procedimiento seguro y fiable, que permite restablecer la funcionalidad previa al traumatismo, con un índice muy bajo de complicaciones posoperatorias.

ABSTRACT Background: Maxillofacial trauma corresponds to all traumatic injuries affecting the facial bones. Nowadays, it represents one of the main healthcare issues worldwide. The aim of this study is to analyze our experience in the interventions performed in hospitalized and their complications. Material and methods: We performed a retrospective and observational study of 205 patients with maxillofacial fractures from 2011 to 2019. Results: 81.46% were men (n = 167) and 38.54% (n = 79) of the patients were between 21 and 30 years of age. Traffic collision was the most common mechanism of trauma (56,1%, n = 115). The types of facial fractures were panfacial (12.2%; n = 25), of the upper-third (1.43%; n = 3), of the middle-third (72.2%; n = 148) and of the lower third (14.15%; n = 29). In the upper third of the face frontal sinus fractures associated with the frontal bone were the most common (66.67%; n =2); in the middle-third combined fractures were most prevalent (54.73%; n = 81) while complex fractures were most frequent in the lower third (34,48%; n = 10). One-hundred and ninety-one patients were operated on (97.07%). Complications occurred in only 11.56% (n = 23) and were not serious. Discusion: In our series, most patients were young men, traffic collisions were the most common cause of trauma, and the middle third of the face was the most affected region. These results are similar to our publications. Surgical management, mostly by open reduction and fixation with titanium-based osteosynthesis material, is an effective, safe and reliable procedure, which allows the restoration of pre-trauma function, with very low rate of postoperative complications.

Maxillofacial Injuries in Brazilian Children and Adolescents Victims of Physical Violence: A Single Forensic Center Analysis

Abstract Objective: To identify the prevalence of maxillofacial injuries resulting from interpersonal violence in Brazilian children and adolescents. Material and Methods: This is a retrospective study conducted at a Center of Forensic Medicine and Forensic Dentistry with a sample of 335 medical reports of victims aged up to 19 years. Variables involved sex and age group, perpetrator, occurrence of the event, characterization of injuries, presence of maxillofacial injuries, type of tissue involvement, and injuries in the oral cavity. Data were analyzed using descriptive, and the Chi-square was used for categorical data. Results: Most victims were female (60.3%) and aged 15-19 years (57.6%). Aggressions occurred at home (50.6%), in the evening (39.5%) and involved perpetrators known to the victim (91.5%). Most victims had multiple injuries (75.8%), involving up to three regions of the body (93.4%). Injuries with blunt objects were the most frequent (86.2%). The prevalence of maxillofacial injuries was 36.7%, with low involvement of the oral cavity (8.4%). A significant association between the presence of injuries on the face and variables "perpetrator" (p=0.015) and "number of injuries" (p=0.006) was observed. Conclusion: Female adolescents were the main victims of physical violence, with repercussions in different regions of the body. The prevalence of maxillofacial injuries was high, although with little involvement of oral cavity structures.

Contribution of cone-beam computed tomography in the decision of surgical management for bone lesions of the maxillofacial region.

The aim of this study was to evaluate the contribution of cone-beam computed tomography (CBCT) in the decision of surgical management for bone lesions of the maxillofacial region. It is a retrospective cross-sectional observational study that includes a sample of panoramic radiography (PR) and CBCT from patients with some type of bone lesion in the maxillofacial region. PR and CBCT images were evaluated by three previously assessed examiners, specialists in oral and maxillofacial surgery. Each image was evaluated randomly, and a surgical procedure was suggested, initially in PR and then in CBCT. The obtained results were submitted to the McNemar test to evaluate the frequencies of changes in the surgical management between the first and the second evaluation in PR and CBCT, and intra-examiner and inter-examiner agreements were analyzed by the Cohen's kappa test. The level of significance was set at 5% (p < 0.05). Intra-examiner agreement increases when CBCT is used. Inter-examiner agreement was low, independently of the evaluated exam, which shows that the choice of treatment plan is examiner-dependent and not exam-dependent. CBCT increases the certainty of the professional in the evaluation of the bone lesions of the maxillofacial region; however, it does not change the indication of the treatment type.

Lesiones penetrantes maxilofaciales: presentación de 4 casos / Penetrating maxillofacial injuries: report of 4 cases

Una historia y examen físico detallado deben ser imperativos en todos los pacientes con sospechas de lesiones penetrantes de la región maxilofacial por parte del cirujano maxilofacial, con participación activa y frecuente de oftalmólogos, otorrinolaringólogos y neurocirujanos, incluso ante lesiones aparentemente triviales. La exploración por radiografías simples, ultrasonidos y especialmente la tomografía axial computadorizada de reconstrucción tridimensional, constituye la mejor vía para detectar lesiones oculares y/ u orbitarias, fracturas del complejo craneofacial, precisar localización, naturaleza y relación del objeto hiriente con órganos y estructuras anatómicas importantes. Se presentan 4 pacientes con este tipo de lesiones proporcionadas por 3 tipos de objetos de naturaleza y características diferentes. Se enfatiza en los aspectos terapéuticos y se ilustra el trabajo con imágenes por rayos X simples y TAC. Se emiten consideraciones a tener presentes en este tipo de lesiones resaltando aquellas con extensión intracraneal(AU)

A history and detailed physical exam should be imperative in all the patients with suspicions of penetrating lesions of the region maxilofacial on the part of the surgeon maxilofacial, with active participation and frequent of oculists, otorrinolaringólogos and neurosurgeons, even before seemingly trivial lesions. The exploration for simple x-rays, ultrasonidos and especially the tomografía axial computadorizada of three-dimensional reconstruction, constitutes the best road to detect ocular lesions and / or orbitarias, fractures of the complex craneofacial, to specify localization, nature and relationship of the object hiriente with organs and important anatomical structures. 4 patients are presented with this type of lesions provided by 3 types of nature objects and characteristic different. It is emphasized in the therapeutic aspects and the work is illustrated with images by rays simple X and TAC. Considerations are emitted to have present in this type of lesions standing out those with extension intracraneal(AU)

Validity of multislice computerized tomography for diagnosis of maxillofacial fractures using an independent workstation.

OBJECTIVE: The purpose of this study was to demonstrate the sensitivity and specificity of multislice computerized tomography (CT) for diagnosis of maxillofacial fractures following specific protocols using an independent workstation. STUDY DESIGN: The study population consisted of 56 patients with maxillofacial fractures who were submitted to a multislice CT. The original data were transferred to an independent workstation using volumetric imaging software to generate axial images and simultaneous multiplanar (MPR) and 3-dimensional (3D-CT) volume rendering reconstructed images. The images were then processed and interpreted by 2 examiners using the following protocols independently of each other: axial, MPR/axial, 3D-CT images, and the association of axial/MPR/3D images. The clinical/surgical findings were considered the gold standard corroborating the diagnosis of the fractures and their anatomic localization. The statistical analysis was carried out using validity and chi-squared tests. RESULTS: The association of axial/MPR/3D images indicated a higher sensitivity (range 95.8%) and specificity (range 99%) than the other methods regarding the analysis of all regions. CONCLUSION: CT imaging demonstrated high specificity and sensitivity for maxillofacial fractures. The association of axial/MPR/3D-CT images added important information in relationship to other CT protocols.

Traumatismos craneofaciales / Diagnostic Imaging of craneofacial fractures

La valoración precisa de las fracturas craneofaciales es indispensable para instituir un tratamiento correcto y de esa manera evitar defectos anatómicos,funcionales y estéticos. En la actualidad el algoritmo de estudio de los traumatismos craneofaciales incluye las radiografías convencionales y la tomografía computada. Se presenta una experiencia conjunta de radiólogos y cirujanos en el estudio de 63 pacientes, 51 hombres y 12 mujeres, con traumatismos craneofaciales asistidos en nuestra institución en los últimos 4 años, con un rango etario que va de 15 a 38 años y una edad media de 30,8 años. Se analizan los hallazgos radiológicos en correlación con la clínica y el mecanismo lesional, así como las técnicas de examen más adecuadas para cada tipo de fractura. Concluímos que la tomografía computada (TC) es el método ideal en la valoración del paciente con traumatismo craneofacial en la planificación del tratamiento quirúrgico(AU)