Cranio-maxillofacial trauma: a 10 year review of 9,543 cases with 21,067 injuries

The facial-bone fractures among fatally injured car occupants in frontal collisions

The retrospective study was performed of all deceased car-occupants in frontal car collisions in order to identify persons with facial-bone fractures. The sample consisted of 482 cases: 378 males and 104 females, average age of 39.59+/-16.01 years. There were 239 car-drivers, 194 front-seat passengers, and 49 rear-seat passengers. In 46 of 482 cases, single fracture of upper facial bones was established: nasal fractures were the most common, followed by zygomatic. In 118 of 482 cases, fracture of upper facial bones was established, as well as 70 cases of jawbone. The fractured facial bones either of the upper or lower face could not be a factor that predicts the position of the deceased in the motor vehicle at the moment of injury (lambda=0.989, p>0.05). The multi-fractured facial-bones were very often associated with the multi-fractured cranial bones - 85 cases (chi(2) =138.75, df=8, p<0.001), as well as jawbone fracture - 35 cases (chi(2) =20.52, df=4, p<0.001). Brain injuries were more present and more severe (coup and contrecoup-contusion and brain laceration) if more facial-bone fractures were involved (chi(2) =147.99, df=8, p<0.001). Cases with only contrecoup brain contusions, associated with multi-fractured facial-bones, were rare - 6 of 118. These fractures are very often associated with cranial fractures, as well as with brain injuries and were caused by intensive contact of the deceased's head with the car's pillar.

Oral maxillofacial fractures seen at a Ugandan tertiary hospital: a six-month prospective study

AIM

To investigate the epidemiological characteristics of maxillofacial fractures and associated fractures in patients seen in the Oral Surgery Unit of Mulago Hospital, Kampala, Uganda.

METHODOLOGY

A six-month prospective study was conducted. Data collected included socio-demographic factors, type and etiology of injury, additional fractures, and post-surgery complications.

RESULTS

One hundred thirty-two (132) cases ranging from 5-70 yrs of age were reported, with a male: female ratio of 7.7:1. The 21-30 yr age group was the largest, comprising 51.51% of cases (n=68). Road traffic accidents contributed to 56.06% (n=74) of fractures. In total, 66% of the sample (n=87) suffered isolated mandibular fractures. Symphyseal and maxillary fractures were the most common mandibular and mid-facial fractures, respectively. Among associated fractures, the femur was most affected. A total of 39 (29.54%) of patients had post-operative complications, of which infection accounted for 48.71% (n=19), and malocclusion accounted for 17.94% (n=7).

CONCLUSIONS

Anticipated changes in maxillofacial trauma trends necessitate regular epidemiologic studies of facial fractures to allow for development and implementation of timely novel preventive measures.

Incidence and pattern of mandibular fractures in rural population: a review of 324 patients at a tertiary hospital in Loni, Maharashtra, India

The aim of this study was to document the pattern and incidence of mandibular fractures occurring in rural population, at Rural Dental College and Hospital, Maharashtra, India. A retrospective analysis of patient records and radiographs for the 5-year period from January 2003 to December 2007 was conducted. Data were identified and analyzed based on age group, gender distribution, anatomic location, and cause of injury. A total of 324 patients with 486 injuries were reviewed, males formed 80.9% and females 19.1% of the studied population, with peak incidence occurring in the 21-30 years age group. The most common fractures site was parasymphysis (39.3%). The etiology of mandibular fractures was road traffic accidents (42.9%), followed by falls (25.9%), assaults and interpersonal violence (20.7%), and animal injuries (10.5%). Our results exhibit that road traffic accidents remain the major cause of mandibular trauma and animal injuries being found exclusively in rural population. There is a variation of incidence and pattern of maxillofacial trauma from region to region.

Anterior skull base fractures: guidelines for treatment

Cranial base fractures still represent a challenging issue. A multidisciplinary approach and the contribution of different specialists is mandatory. There is still a controversy regarding the correct approach to these trauma due to the diversity of opinions as well as surgical approaches and timing.

Incidence and severity of maxillofacial injuries during the Second Lebanon War among Israeli soldiers and civilians

PURPOSE

To analyze the incidence and severity of maxillofacial injuries in the Second Lebanon War, that occurred during the summer of 2006, among Israeli soldiers and civilians.

PATIENTS AND METHODS

This is a retrospective cohort study of patients recorded in the Israel National Trauma Registry during the Second Lebanon War. Data refer to all general hospitals throughout the country. Data were analyzed according to the etiology of the injury, severity of trauma using the Injury Severity Score, trauma location, and duration of hospital stay. Cases with multiple injuries that included maxillofacial injuries were separated and further analyzed according to the above parameters. Patients with only dental injuries and superficial facial soft tissue lacerations were excluded because they were referred to the military dental clinics and not to general hospitals.

RESULTS

Maxillofacial injuries were found in 36 (6.4%) of the 565 wounded. Patients with maxillofacial injuries ranged in age from 20 to 44 years (mean age, 25.5 +/- 5.7 years). Greater than 50% of the injuries required more than 3 hospitalization days. Mortality rate of the maxillofacial injured was 2.8%. Most of the maxillofacial injuries (33; 91.7%) were combined with other organ injuries; 9 (25%) patients also had dental injuries.

CONCLUSION

In the Second Lebanon War, the incidence and severity of true maxillofacial injuries, without dental injuries alone, were relatively low compared with previous reports of other conflicts. However, because most injuries involved multiple organs, special attention is required when planning and providing emergency, as well as secondary and tertiary medical care to war wounded.

[Epidemiology of maxillofacial traumatology in Tunis]

INTRODUCTION

The aim of this study was to assess the epidemiology of maxillofacial trauma in Tunisia over a 10-year period.

METHODS

This retrospective study was carried out between 1995 and 2004 on patients admitted for maxillofacial trauma in the department of maxillofacial and plastic surgery of the Charles-Nicolle Hospital in Tunis. The selected relevant parameters were: age, gender, etiology, time of trauma, type of fracture and associated lesions.

RESULTS

A total of 1100 patient files were analyzed. The average age was 29 years and the sex-ratio was 6:1 in favor of men. The most common etiologies were: car crashes (39%), fights (28%) and domestic trauma (19%), occurred in the evening, on weekends and in the summer. The frequency increased in the evening, on weekends and in the summer. Mandibular fractures (62%) and zygomatic fractures (32%) were the most common trauma. Polytrauma occurred in 18% of the patients and cranial trauma in 10% of the cases.

DISCUSSION

Epidemiological investigations results vary according to demographic and cultural regional specificities. Long-term collection of epidemiological data in maxillofacial surgery is a major issue to plan educational campaigns and therapeutic strategies. In Tunisia, driver education and observance of traffic regulations should be improved.

Traumatic intracranial haemorrhage in conscious patients with facial fractures--a review of 1959 cases

OBJECTIVE

Facial fracture patients who are conscious with a Glasgow Coma Scale (GCS) score of 15 in the absence of clinical neurological abnormalities are commonly not expected to have suffered severe intracranial pathology. However, high velocity impact may result in intracranial haemorrhage in different compartments.

METHODS

Over a 7-year period, 1959 facial fracture patients with GCS scores of 15 and the absence of neurological abnormalities were analysed. In 54 patients (2.8%) computed tomography scans revealed the presence of accompanying intracranial haemorrhage (study group). These patients were compared with the 1905 patients without intracranial haemorrhage (control group).

RESULTS

Univariate analysis identified accompanying vomiting/nausea and seizures, cervical spine injuries, cranial vault and basal skull fractures to be significantly associated with intracranial bleeding. In multivariate analysis the risk was increased nearly 25-fold if an episode of vomiting/nausea had occurred. Seizures increased the risk of bleeding more than 15-fold. The mean functional outcome of the study group according to the Glasgow Outcome Scale was 4.7+/-0.7.

CONCLUSION

Intracranial haemorrhage cannot be excluded in patients with facial fractures despite a GCS score of 15 and normal findings following neurological examination. Predictors, such as vomiting/nausea or seizures, skull fractures and closed head injuries, enhance the likelihood of an intracranial haemorrhage and have to be considered.

The design and implementation of chinese maxillofacial trauma registry, analysis and injury severity score system

BACKGROUND

: The aim of this study was to develop a tool which can be used to do a collaborative and prospective survey on the epidemiologic characteristics, treatment and outcome of maxillofacial trauma in China and to ameliorate the existing score and treatment methods of maxillofacial trauma.

METHODS

: Chinese Maxillofacial Trauma Registry, Analysis and Injury Severity Score System were developed. Functional modules of this system include clinical data, user management, data inspection, data retrieval, statistic analysis, follow-up survey, injury severity score, system maintenance. The Client/Server and Browser/Server database structure were applied to achieve telematic. The Abbreviated Injury Scale code rules of facial region were revised in detail to embody the characteristics of maxillofacial trauma. Maxillofacial Injury Severity Score (MISS) was designed to evaluate the severity of function derangement in maxillofacial trauma. Thousand nine hundred fifty-nine patients with facial injuries were classified into different groups by the number of fractures and site of injuries. The severity of different groups were evaluated with Injury Severity Score (ISS), Revised Facial Injury Severity Score (RFISS) and MISS, respectively. The results of ISS, RFISS, and MISS were statistically analyzed.

RESULTS

: By distributed applying of the system, the survey networks of Chinese maxillofacial trauma had been founded. The classification of trauma etiology, injury type, and severity were meliorated. With the help of the system, the input, management, retrieval and statistically analysis of maxillofacial trauma data can be conveniently and accurately accomplished. Furthermore, the ISS, RFISS, and MISS can be automatically calculated and analyzed according to the code rules of Abbreviated Injury Scale and Revised Abbreviated Maxillofacial Injury Scale.

CONCLUSION

: The system has satisfactory stability, security, compatibility, and specialty. It can be used to collect standard cases of maxillofacial trauma and to do a collaborative research on the epidemiologic characteristics, treatment, and outcome of facial injuries. MISS is more accurate, objective, and credible than ISS and RFISS in reflecting the severity of maxillofacial trauma and evaluating the curative effect and prognosis.

Maxillofacial trauma in major trauma patients

BACKGROUND

Trauma has been identified as a major public health problem in Australia. Maxillofacial trauma constitutes a significant proportion of trauma, although epidemiological studies in Australia are few. The purpose of this study was to assess the prevalence and the epidemiological pattern of maxillofacial trauma occurring in major trauma patients.

METHODS

Data were obtained from the Victorian State Trauma Registry, which included all major trauma patients in Victoria. All data relating to maxillofacial trauma defined according to Abbreviated Injury Scale and International Classification of Diseases codes from 1 July 2001 to 30 June 2004 were selected. Data collected included demographic and injury details, and operative procedures carried out.

RESULTS

Sixteen per cent of major trauma patients sustained maxillofacial trauma. The highest frequency of injuries occurred in the 15-24 years age group. More males were affected than females (3:1). The majority of injuries were due to transportrelated causes (69 per cent) and occurred mostly on roads, streets or highways (70 per cent). Falls were the cause of 15 per cent of injuries, 10.5 per cent of these injuries were fatal while 20.7 per cent needed rehabilitation. The most common type of bony injury was a fractured maxilla.

CONCLUSION

The need for preventive strategies to be reinforced has been highlighted as transport-related injuries remain high especially in the younger age groups.

A four year retrospective study of 1,062 patients presenting with maxillofacial emergencies at a specialist paediatric hospital

AIMS

To examine the nature of maxillofacial injuries that presented to the Birmingham Children's Hospital according to aetiology, incidence and characteristics of patients.

METHODS

The maxillofacial unit at Diana Princess of Wales Birmingham Children's Hospital serves a catchment area of 5.2 million. We examined all children who presented with maxillofacial trauma from 2002 to 2006. Details including characteristics of patients and aetiology and nature of injury, were entered prospectively into a database.

RESULTS

The total number of patients who presented was 1062. The ratio of boys to girls was 2:1. The main reason for attendance was a fall (70%). 149 (17%) patients presented after interpersonal violence. Soft tissue injuries accounted for 70% of injuries and 14% presented with a maxillofacial fracture.

CONCLUSIONS

Our data indicate that the range and mechanism of presenting injuries have not changed within the time frame. Despite public perception of increasing interpersonal violence, this was not reflected in our series of patients.

Intraocular Pressure Variations during Zygomatic Fracture Reduction and Fixation: A Clinical Study

BACKGROUND

The reduction of midface fractures has been associated with the rare but devastating complication of blindness. An increase in intraocular pressure is important in the mechanism of blindness in this setting. In this study, the authors assessed the intraocular pressure in patients who underwent zygomatic fracture reduction (with or without fixation).

METHODS

Using applanation tonometry, 29 patients underwent intraocular pressure measurements before, during, and after fracture fixation. The contralateral pressures were measured and used as the control.

RESULTS

There were 29 patients with a mean age of 35 years, and the mean time to surgery was 5 days. Preoperatively, all patients had normal intraocular pressures and normal visual acuity. All patients underwent a Gillies lift and 18 patients required open reduction and fixation of the frontozygomatic suture (n = 4) or the infraorbital margin (n = 2), and the remainder (n = 12) required fixation of both points. There was no statistically significant increase in the intraocular pressures following the reduction of uncomplicated zygomatic fractures. Statistically significant pressure reductions were noted immediately after reduction and fixation.

CONCLUSIONS

The surgical reduction of uncomplicated zygomatic fractures has no adverse effect on the intraocular pressure. It is the authors' opinion that adjunctive measures to reduce the pressures are unnecessary.

Dentoalveolar trauma in Glasgow: an audit of mechanism and injury

Traumatic dental injuries in children often require multiple follow-up visits to the dentist and may have long-term consequences for the developing dentition. The aim of this audit was to examine age, gender, location, time of year, mechanism of injury and type of injury sustained in relation to dentoalveolar trauma in children attending the paediatric dental trauma clinic at Glasgow Dental Hospital from 2002 to 2004, and to compare our findings with data in the published literature. Males suffered 60% of all dental trauma, 79% of sporting injuries and 85% of assaults. The injuries in males were more severe, representing 65% of enamel dentine and pulp fractures, 100% of crown root fractures and 66% of crown root and pulp fractures. A peak for trauma was seen in the 8-11-year-old group (43%). The majority of injuries in the under four age group resulted from falls (87%). Taken as a whole, falls accounted for 49%, sports related injuries 18%, bicycle and scooter 13%, assault 7%, and road traffic accidents 1.5% of all injuries. They also accounted for a far higher percentage of intrusive luxations (67%). The largest proportion of injuries occurred during the summer months (33%). Sixty-four percent of children suffered trauma to more than one tooth. Fifty-eight percent of injuries involved the dental hard tissues and pulp and the majority of these (82%) were crown fractures. Most subjects (82%) suffered trauma to their periodontal tissues, (26% concussion or subluxation, 26% lateral luxation and 23% avulsion). Injuries to the supporting bone were uncommon. Sixty-six percent of all injuries occurred outdoors. Our findings were similar to a number of published studies, but in contrast to several others. More consistency is required in the collection and reporting of trauma data to be able to draw meaningful conclusions by comparison.

Plate osteosynthesis of the mandibular condyle

The aim of this study is to evaluate and compare the biomechanical stability of various osteosynthesis materials for mandible condylar-process fractures. On 160 porcine mandibles, four different monocortical plating techniques (40 per group) were investigated. Condyles were fractured at a defined location from the incisure to the posterior border. After correct anatomical reduction the fractures were plated, using four different techniques. Osteosynthesis materials used were the delta plate, the trapezoid plate, the dynamic compression plate and double mini-plates. Each group was subjected to linear loading in lateral to medial, medial to lateral, anterior to posterior and posterior to anterior directions by a universal mechanical testing machine TIRAtest 2720. Yield load, yield displacement were measured for the different plates. Statistically significant differences were noted between the fixation groups in all four directions. Rigid internal fixation with double mini plates showed the best stability in all directions except posterior to anterior. In this direction, the delta-plate resisted the highest loads. In the three other directions, the delta plate was second best with data similar to double miniplates but lower in magnitude.

Craniomaxillofacial Injuries in the United Arab Emirates: A Retrospective Study

PURPOSE

To analyze craniomaxillofacial injuries in selected hospitals in the United Arab Emirates (UAE).

PATIENTS AND METHODS

This is a retrospective study of craniomaxillofacial injuries treated in 3 major hospitals in the UAE. Patient files were retrieved, reviewed, and analyzed. The main analysis outcome measures were the patients' name, age, and gender and the injuries' time, site, type, treatment and outcome.

RESULTS

A total of 288 patients sustained 475 craniomaxillofacial injuries; road traffic accidents caused the majority of injuries. The patients ranged in age from 2 to 82 years (mean, 27.3 years), and the male-to-female ratio was 7:1. The yearly distribution of fractures peaked during 2001, and the monthly distribution peaked in January. The greatest number (41%) of patients were UAE nationals. Most patients (70.5%) had mandibular fractures, and the most common site was the body. There were 139 patients (48.3%) with a total of 171 midface fractures (36%); the most common fracture site was the zygomatic complex (29.8%). The most common treatment for jaw fractures was plating plus intermaxillary fixation. Stable zygomatic complex fractures were closely reduced (elevated), and unstable ones were treated by internal fixation. About 25% of the cases had 1 or more postoperative complication.

CONCLUSIONS

Craniomaxillofacial injuries in the UAE included in this study are somewhat similar to those reported in other countries. Differences from other countries are probably related to factors peculiar to the UAE, such as climate, social trends, and the cosmopolitan population.

Traumatic displacement of teeth into maxillary sinus cavity: an unusual dentoalveolar fracture

We present an unusual dentoalveolar fracture case who had displacement of teeth into maxillary sinus cavity. This patient was 15 years old. He had oral bleeding and lost teeth after falling from the top of a building. Examination of maxillofacial region showed that there were left maxillary teeth lost, alveolar fracture, gingival bleeding and laserations. Maxillofacial bones were found intact. Canine, both premolars and the first molar teeth on left maxilla were lost. Pantomographic evaluation viewed two teeth in the left maxillary sinus. In addition, computerized tomography clearly showed oroantral fistula, alveolar fracture and teeth into maxillary sinus. Extraction of teeth from sinus cavity was performed as well as repair of oroantral fistula and alveolar fracture. This patient is thought that dentoalveolar injury may be more serious than expected according to the oral examination and it requires careful evaluation, even if dentoalveolar trauma does not pose a significant morbid risk.

A New 3-Dimensional Plate for Transoral Endoscopic-Assisted Osteosynthesis of Condylar Neck Fractures

PURPOSE

Transoral surgical treatment of condylar neck fractures minimizes the risk of damaging the facial nerve. But fracture reduction and plate osteosynthesis remain challenging, especially when using 2 plates, although endoscopic assistance has proven helpful. To further improve and simplify osteosynthesis at the condylar neck, a new delta-shaped osteosynthesis plate that mimics the function of 2 plates has been developed. The present clinical follow-up study was conducted to evaluate this new plate.

PATIENTS AND METHODS

A total of 16 patients with 19 condylar neck fractures (3 Spiessl I, 13 Spiessl II, 1 Spiessl III, 2 Spiessl IV) and 3 bilateral fractures were treated through an endoscopic-assisted transoral approach. After reduction, the plate was applied, with the screws inserted either transcutaneously or with angulated instruments.

RESULTS

The operation time ranged between 55 and 120 minutes. More than 6 months after the operation, functional parameters returned to normal, with an average mouth opening of 41 mm, protrusion of 5 mm, and laterotrusion of 6 mm. Radiographic controls showed good fracture alignment in 15 of 19 cases immediately after the operation, and in 14 of 19 cases 6 months after the operation. No plate fracture or bending was observed. In 3 patients, loose screws were found on plate removal.

CONCLUSIONS

The clinical data and the engineering and biomechanical background suggest that the new delta-shaped plate can be regarded as 2 miniplates. The new plate is suitable for treatment of condylar neck fractures, particularly when used in an endoscopic-assisted transoral approach.

Maxillofacial fractures in Southern Bulgaria – A retrospective study of 1706 cases

The present retrospective study investigated various types, aetiology, complications and methods of treatment of maxillofacial fractures managed in the Department of Maxillofacial Surgery, Medical University, Plovdiv, Bulgaria.

PATIENTS AND METHODS

A total of 1706 patients were studied with 2534 fractures treated between 1994 and 2003. The analysis included data on age and gender of patients, causes and types of fractures (mean number of fractures per patient - 1.48) as well as the treatments used and the associated complications.

RESULTS

Most maxillofacial fractures were sustained by 574 men (age range 21-30 years). The ratio of males to females was 4.6:1. Most fractures were caused by violent assault - 1040 (61%), followed by motor vehicle accidents - 264 (15.5%), fall - 213 (12.5%) and bites from animals - 72 (4%). Fractures of the mandible were sustained by 1261 patients (74%), fractures of the maxilla by 97 (6%), fractures of the zygomatic bone by 277 (16%), nasal fractures by 63 (4%) and multiple fractures by 8 (0.5%). In 1330 (77%) patients the fractures were treated by closed reduction; in 264 patients (16%) by open reduction and fixation, and for the remaining 112 patients (7%) were managed with combined closed and open reduction. The mortality rate was 0.2%, the lethal cases being a result of a combination of severe fractures in the maxillofacial region and trauma to other organs/systems.

CONCLUSION

The most common cause of traumatic injury in the maxillofacial region in this study sample was assault, predominantly affecting men. The fractures were treated using various methods but mostly by closed reduction plus fixation.

Traumatic dental injuries and associated factors among Brazilian preschool children

The main objective of this study was to assess the epidemiology of traumatic dental injuries (TDI) to the primary teeth of preschool children and second, to investigate whether TDI were related to anterior open bite and, third, whether TDI are related to socio-economic circumstances in an urban Brazilian population. A clinical examination was performed during the National Day of Children's Vaccination. TDI were classified according to the modified classification proposed by Ellis. In addition to those criteria the presence of tooth discoloration was recorded. An interview was carried out with mothers or guardians. The data collected included mother's level of education and living conditions. The prevalence of TDI was 9.4%. The maxillary central incisors were the most affected teeth. Most children with a TDI experienced traumatic injuries to one tooth (6.3%), while 2.8% had two and 0.4% had three traumatized teeth. The most common crown fracture was in enamel only (68.8%), followed by crown fracture of enamel and dentin (13.8%). Missing teeth following trauma occurred in 10.9% of those with TDI. The prevalence of tooth discoloration was 5.1%. Children with anterior open bite had twice the level the level of TDI compared to those with normal occlusions (P = 0.001). Socio-economic factors were not statistically significantly associated with the occurrence of TDI. The prevalence of dental injuries in Brazilian preschool children was low. Children with anterior open bite experienced more dental injuries. Neither of the indicators of socio-economic status was related to the prevalence of TDI.

A 3-year survey of assault-related maxillofacial fractures in central Switzerland

AIM

The aim of this study was to analyse the character of assault-related facial fractures in central Switzerland and to compare their prevalence with the data presented in similar reports from other countries.

MATERIAL

The present study comprised 65 patients with assault-related maxillofacial fractures treated in the Department of Cranio-Maxillofacial Surgery, University Hospital of Bern between 2000 and 2002.

METHODS

The mechanism, the causes of the injuries and the location of the fractures were analysed by reviewing emergency and hospital records. Concomitant injuries were also studied.

RESULTS

The mean age of the patients was 33 years with the largest group being below 25 years. The male-to-female ratio was 56:9. The most common causes of assault-related injuries were fights, most frequently facial blows, accounting for 92.5% of all patients. Seventy-six per cent of the fractures occurred in the middle and upper facial skeleton with a predominance of 2:1 for the left side. In 39 patients (60%) surgery was necessary, with a mean hospital stay of 3.3 days. Thirty-five patients (54%) had concomitant injuries. Alcohol and drug abuse was found in 15 patients (23%).

CONCLUSION

It seems that mostly young men suffer assault-related maxillofacial injuries. A contributing factor to the increased disposition for violence could be alcohol and drug abuse. Therefore, national prevention programmes for alcohol or drug abuse and addiction might have a positive effect on reducing the incidence of assault-related maxillofacial injuries.

Development of an engineering autologous palatal mucosa-like tissue for potential clinical applications

The goal of this study was to optimize key processes in recreating functional and viable palatal mucosa-like tissue that would be easy to handle and would promote wound healing. Normal human gingival fibroblasts and epithelial cells and a clinically useful biomaterial, CollaTape, were used. Structural and ultrastructural analyses showed that the gingival fibroblasts and epithelial cells adhered to the biomaterial and proliferated. Following a 6-day culture, using 10(5) fibroblasts and 10(6) epithelial cells, a well-organized palatal mucosa-like tissue was engineered. The engineered epithelium displayed various layers, including a stratum corneum, and contained cytokeratin 16-positive cells located in the supra-basal layer. This palatal mucosa-like engineered tissue was designed to meet a variety of surgical needs. The biodegradable collagen membrane (CollaTape) contributed to the flexibility of the engineered tissue. This engineered innovative tissue may contribute to the reconstruction of oral soft-tissue defects secondary to trauma, congenital defects, and acquired diseases.

A Retrospective Analysis of 101 Zygomatico-Orbital Fractures

A 5-year review of 101 cases of zygomatico-orbital fractures is presented. The epidemiology, fracture patterns, treatment modalities, and complications were evaluated in this retrospective study. A majority of fractures were sustained by males and resulted from trauma inflicted during altercations and traffic accidents. The most common fracture pattern was tripod fracture and the most common associated facial fractures were mandibular fractures. Open reduction and rigid fixation was the most frequently employed treatment modality. Depending on the stability of reduced zygoma, one, two and three-point fixations were applied. Orbital floor exploration was performed in 41 cases. Ten out of 16 orbital floor bone defects required reconstruction. In these cases orbital floor was reconstructed with 1.5-mm porous polyethylene implant. Although we encountered a few complications related to the incisions for open reduction, the rate of complication in which correction was difficult (e.g. facial asymmetry) was lower with this approach when compared with the literature.

A prospective study into the demographics and treatment of paediatric facial lacerations

To evaluate the demographics and treatment of facial lacerations occurring in a paediatric patient cohort. We undertook a prospective study of 106 children who sustained a soft tissue facial injury and who presented to an Accident and Emergency department in a UK district general hospital supporting a population of 750,000. Approximately 31,000 are dependent children between the age of 0-12 years. Our results show that the majority of paediatric patients who sustained a facial laceration were male (62%). The frequency of this injury was greatest amongst males across all age groups. The majority of children above 3 years of age sustained their injury outdoors. The peak time for injury varied for different age groups. The 0-3 year olds sustained the highest incidence of injuries around 17:00 h. A bi-modal time pattern was seen in the 4-6 year age group, initially at 12:00 h with a second peak at 17:00 h. The most frequent aetiology was play. A significant finding was that 8% of the injuries that were managed resulted from a dog bite. Almost 50% of children above 4 years of age, who required primary closure of their laceration, were able to tolerate their treatment being performed under local anaesthesia. The pattern of facial lacerations in our study supports the results of previous studies. Our data has provided further insight into the presentation of these injuries. These studies are valuable in targeted injury prevention programmes aimed at potentially reducing the nature, incidence and severity of facial soft tissue trauma in children in the UK.

Diagnosis of midface fractures with CT: what the surgeon needs to know

Computed tomography is commonly used to evaluate patients with blunt facial trauma. With the high definition of the current scanners, even small fractures of the facial skeleton can be visualized. In complex midface injuries, it can be difficult for the radiologist to know which fractures are important to point out to the surgeon. An understanding of the anatomically relevant and surgically accessible craniofacial buttresses is critical for management of these injuries. Naso-orbitoethmoid fractures are classified according to the degree of injury to the medial canthal attachment. If the nasofrontal ducts are disrupted, surgical obliteration of the frontal sinus is needed to prevent formation of a mucocele. Displaced fractures of the zygomaticomaxillary complex often increase orbital volume due to angulation of the lateral orbital wall at the zygomaticosphenoid suture. If the zygomatic arch is severely comminuted or angulated, surgical exposure is indicated. In orbital fractures, the position and shape of the medial and inferior rectus muscles can indicate whether entrapment and diplopia are likely. Pediatric "trapdoor" orbital fractures and fractures of the orbital apex associated with decreasing vision represent surgical emergencies. Le Fort fractures involve disruption of the pterygoid plates from the posterior maxilla; any combination of Le Fort I, II, and III patterns can occur.

Jaw fractures in the indigenous and non-indigenous populations of Western Australia: 1999–2003

Little data exist on the analysis of jaw fractures in Australia, and none in Western Australia. This study was a retrospective analysis of all hospitalizations for jaw fractures in Western Australia between the years 1999-2000 and 2002-2003. The aims were to determine the incidence, distribution between males and females, different age groups, aboriginal and non-aboriginal groups, and rural and urban populations. The economic impact of jaw fracture hospitalizations was also determined. Males were more likely (80.4%) than females to be admitted for a jaw fracture. Fractures of the mandible were more common (61.9%) than maxillary fractures (38.1%). Aboriginal persons had nearly 10 times more hospitalization rate than that of non-aboriginal persons. Fracture rates were significantly (P<0.05) higher in rural (61.9 per 100,000) than in urban areas. Over the 4-year study period the total costs for all jaw fracture hospitalizations exceeded US$ 7.6 million. This study clearly indicates the burden of jaw fractures on the Western Australian population, in terms of physical and economic impact.

Epidemiological analysis of maxillofacial fractures in Brazil: a 5-year prospective study

OBJECTIVE

The aim of this study was to assess the characteristics of maxillofacial fractures in the Piracicaba region of Brazil during a 5-year period and to delineate comparisons with worldwide facial fracture patterns.

STUDY DESIGN

A descriptive statistical analysis was developed based on data collected using a specifically designed clinical survey of all patients who attended the Division of Oral and Maxillofacial Surgery at the Piracicaba Dental School from 1999 to 2004. Information regarding age, gender, etiology, and type of maxillofacial injury and its associated lesions were evaluated. In addition, treatment modalities and complication rates during patient follow-up were assessed.

RESULTS

A total of 1024 patients presenting 1399 maxillofacial fractures were analyzed. Patients' ages ranged from 0 to 88 years (mean age, 28 +/- 16.4 years). The ratio of men to women was 4:1. Most fractures were caused by traffic accidents (45%), followed by assaults (22.6%), falls (17.9%), sports accidents (7.8%), and work accidents (4.5%). The prevalent anatomic regions of facial fractures (in percentages) were the mandible (44.2%), the zygomatic complex (32.5%), and the nasal bones (16.2%). Associated systemic lesions were found in 41.9% of patients, with prevalence for injuries to the upper (24.1%) and lower limbs (15.4%). Patient management was considered to be conservative in 490 patients (47.9%), and surgical therapy was performed in 493 patients (48.1%), of whom 399 (80.9%) were treated with open reduction and rigid internal fixation. Complications occurred in 76 patients (7.4%), mainly due to infection and malocclusion.

CONCLUSION

The findings of this study indicated that epidemiological research of maxillofacial fractures allows the presentation patterns of the most affected individuals and the nature of their lesions to be outlined according to the region evaluated. Furthermore, treatment evaluation and complication rate analysis permits a more realistic interpretation of how patients should be managed.

Occupational Maxillofacial Fractures: A 3-Year Survey in Central Switzerland

PURPOSE

The aim of this study was to determine occupational facial fractures in central Switzerland. Concomitant injuries were also studied.

MATERIALS AND METHODS

The Department of Cranio-Maxillofacial Surgery at the University Hospital in Berne provides a 24-hour maxillofacial trauma service for its population (1.6 million). The present study was comprised of 42 patients (8.4% of treated maxillofacial injuries) with occupational maxillofacial fractures registered at this unit between 2000 and 2002. Information on the topic of occupation, the cause of the accidents, and the topographic location of the fractures was analyzed.

RESULTS

The mean age of the patients was 44.4 years, with a male to female ratio of 41:1. Sixty-nine percent of the injuries occurred in farm and forestry workers and in construction laborers during the summertime (33%). Workers in these occupations carried a 127-fold (farm and forestry workers) and a 44-fold (construction laborers) higher risk of incurring maxillofacial fractures than did service and office workers. Injuries were most frequently (43%) caused by a thrown, projected, or falling object. Eighty-two percent of the fractures occurred in the midface region and at the skull base. Fifty-nine percent of the patients had concomitant injuries. In 69%, surgery was necessary, the mean duration of their hospital stay being 4.8 days.

CONCLUSION

The probability of sustaining work-related maxillofacial traumata is correlated to the nature of the occupation. Farm and forestry workers are at the highest risk, most frequently injured by being struck by an object or an animal. The introduction of personalized safety measures should become obligatory in high-risk occupations.

Orofacial/cerebral injuries and the use of mouthguards by professional athletes in Switzerland

The objective of the present study was to measure the occurrence of orofacial and cerebral injuries in different sports and to survey the awareness of athletes and officials concerning the use of mouthguards during sport activities. Two hundred and sixty-seven professional athletes and 63 officials participating in soccer, handball, basketball and ice hockey were interviewed. The frequency of orofacial and cerebral trauma during sport practice was recorded and the reason for using and not using mouthguards was assessed. A great difference in orofacial and cerebral injuries was found when comparing the different kinds of sports and comparing athletes with or without mouthguards. 45% of the players had suffered injuries when not wearing mouthguards. Most injuries were found in ice hockey, (59%), whereas only 24% of the soccer players suffered injuries when not wearing mouthguards. Sixty-eight percentage of the players wearing mouthguards had never suffered any orofacial and cerebral injuries. Two hundred and twenty-four athletes (84%) did not use a mouthguard despite general acceptance by 150 athletes (56%). Although the awareness of mouthguards among officials was very high (59%), only 25% of them would support the funding of mouthguards and 5% would enforce regulations. Athletes as well as coaches should be informed about the high risk of oral injuries when performing contact sports. Doctors and dentists need to recommend a more intensive education of students in sports medicine and sports dentistry, and to increase their willingness to become a team dentist.

Unknown Posttraumatic Foreign Body in Facial Region

This study emphasizes the importance of scrupulous diagnostic first aid procedures to avoid the consequences of trauma due to a foreign body. Two patients were examined, both with facial trauma showing nonspecific symptoms. Through objective internal and external oral examination complete with clinical and radiographic examinations Three dimensional computed tomography (TC3D), foreign bodies unknown at the time of the trauma were identified. When the foreign bodies had been removed, the ache symptoms disappeared, restoring functionality and the patient's facial appearance. This study shows the need for detailed early diagnosis to achieve correct monitoring and therefore proper treatment for these patients.

Transfer of facially injured road trauma victims and its impact on treatment

BACKGROUND

Road trauma is a common cause of severe facial injuries. The aim of the present study is to define patients involved, and determine the effect of their geographical origin on treatment and follow up.

METHODS

All patients over 14 years of age suffering facial injuries caused by road trauma presenting to the two study hospitals from 1994 to 1999 were identified and details were collected on demographic details and treatment.

RESULTS

Four hundred and nine patients met the inclusion criteria. The majority required hospital transfer. Young men were the most frequently injured group of patients. Patients from peripheral regions had significant delays in transfer and treatment. They were made fewer outpatient appointments but attended at the same frequency as patients from the immediate region of the study hospitals.

CONCLUSIONS

To minimize delays the process of patient transfer needs to be streamlined and education of staff in peripheral hospitals undertaken regarding facial injuries.

Trends and characteristics of oral and maxillofacial injuries in Nigeria: a review of the literature

BACKGROUND

The etiology of maxillofacial injuries varies from one country to another and even within the same country depending on the prevailing socioeconomic, cultural and environmental factors. Periodic verification of the etiology of maxillofacial injuries helps to recommend ways in which maxillofacial injuries can be averted. The aim of the present study is therefore to analyse the characteristics and trends of maxillofacial injuries in Nigeria based on a systematic review of the literature.

METHODS

A literature search using MEDLINE was conducted for publications on maxillofacial injuries in Nigeria. The relevant references in these publications were manually searched for additional non-Medline articles or abstracts. Forty-two studies met the inclusion criteria and the full-texts of these articles were thoroughly examined. Due to lack of uniformity and consistency in assessment and measurement variables, and treatment modalities in most of the studies, it was impossible to apply the traditional methods of a systematic review. Therefore, a narrative approach was conducted to report the findings of the included studies.

RESULTS

Although, other causes like assaults, sport injuries, and industrial accidents increased in numbers, throughout the period between 1965 and 2003, road traffic crashes remained the major etiological factor of maxillofacial injuries in all regions, except northeastern region where assault was the major cause. A significant increase in motorcycles related maxillofacial injuries was observed in most urban and suburban centres of the country. Animal attacks were not an unusual cause of maxillofacial injuries in most parts of northern Nigeria. Patients in the age group of 21-30 years were mostly involved. A strong tendency toward an equal male-to-female ratio was observed between earlier and later periods.

CONCLUSION

Road traffic crashes remain the major cause of maxillofacial injuries in Nigeria, unlike in most developed countries where assaults/interpersonal violence has replaced road traffic crashes as the major cause of the injuries. There is a need to reinforce legislation aimed to prevent road traffic crashes and the total enforcement of existing laws to reduce maxillofacial injuries among children and adults. Special attention should also be paid by the authority to improve the socioeconomic conditions of Nigerian populace.