1/151. Assessment, documentation, and treatment of a developing facial asymmetry following early childhood injury. Prepubertal trauma is often implicated as the cause of asymmetric growth of the mandible. A series of photographs taken before and after early childhood injury to the orofacial complex illustrates the development of a three-dimensional dentofacial deformity in a patient. The diagnosis and combined surgical orthodontic treatment plan to correct the facial asymmetry and malocclusion are discussed. ( info) |
2/151. Unusual dental injuries following facial fractures: report of three cases. We report 3 cases of unusual dental injuries following facial fractures. The first patient sustained intrusion of a maxillary incisor into the nasal cavity following a mandibular fracture. The tooth dislocated into the pharynx and was found lodged in the piriform fossa during surgery. The second patient sustained intrusion of molars into the maxillary sinus following maxillary and mandibular fractures. His treatment was delayed due to life-threatening hemorrhage. The third case involved ingestion of multiple avulsed teeth into the alimentary tract following severe maxillofacial fractures. Although the diagnosis was made more than a week after the injury, the patient did not suffer any complications as a result of the dental avulsion. The aim of this report is to emphasize the possibility of associated dental injuries in patients with facial fractures. The trauma surgeon should be cognizant of the importance of carrying out a thorough intraoral examination during the initial evaluation. Any missing tooth should be considered as possibly displaced into other tissue compartments, and must be routinely searched for with x-rays of the skull, cervical spine, chest, and abdomen. If full intrusion injury is suspected, further diagnostic investigation with facial computed tomography scanning may be worth while. ( info) |
3/151. Correction of posttraumatic maxillary deficiency by anterolateral alveolar osteotomy. Anterolateral alveolar osteotomy was performed in a patient who experienced facial trauma in a traffic accident. Bony sequela had remained in the maxilla after the emergency surgery, affecting the facial appearance. A different technique of osteotomy for this unusual type of deformity is presented. ( info) |
4/151. Maxillofacial fixation with absorbable miniplates: computed tomographic follow-up. Rigid internal fixation has become a mainstay of treatment for maxillofacial trauma. Refinement in materials and manufacturing have led to unobtrusive titanium miniplates and microplates. However, concerns remain regarding the presence of plates and screws after fracture healing has occurred. Absorbable rigid fixation systems ideally would provide sufficient strength and fixation to allow osseous healing and then be absorbed without sequelae. Plates and screws made from polylactic acid-polyglycolic acid copolymer approach this ideal. Four maxillofacial trauma patients underwent open reduction and internal fixation using absorbable plates and screws. Direct coronal computed tomographic (CT) scans were obtained before and after repair of the fractures. CT scan 6 months after repair shows adequate reduction of fractures and osseous healing. Clinical follow-up shows no significant sequelae. ( info) |
| I have reviewed aetiology, sex, age at time of treatment, clinical features, radiographic findings, anaesthetic techniques, surgical treatment, complications, and results in 32 patients with ankylosis of the temporomandibular joint. Trauma and infection were the commonest causes of ankylosis: 50% and 41%, (n = 13), respectively. The 21-30 year age group had the most trauma cases. Twenty (63%) of the patients presented with bilateral ankylosis. Failing to do jaw-opening exercises was the main cause of relapse. ( info) |
6/151. Non-free osteoplasty of the mandible in maxillofacial gunshot wounds: mandibular reconstruction by compression-osteodistraction. We have treated 33 young men with medium to large (3-8 cm) bony and soft tissue defects of the lower third of the face caused by gunshot wounds. After debridement, collapsing the proximal segments for primary approximation of soft and hard tissues and a closed osteotomy of a small fragment of mandible, we used an original compression-distraction device, designed in 1982 and tested during 1983 (analogous devices were absent at that time) to reposition the mandible and cause callus to form (during distraction) between the fragment and to use the remaining stumps of bone to fill in the defect. The soft tissues were repaired at the same time. Twenty-eight of the patients presented within a few hours of injury, and the remaining five had old injuries. The only complications were in the group with old injuries where four patients developed abscesses that required drainage, but these did not interfere with the process of osteogenesis. All 33 patients had good functional and aesthetic results within 3-4.5 months. The method allows a bloodless minimally traumatic procedure which can be carried out in one stage. The results compare very favourably with the classic methods of the treatment of mandibular gunshot injuries. ( info) |
7/151. Reconstructive surgery for complex midface trauma using titanium miniplates: Le Fort I fracture of the maxilla, zygomatico-maxillary complex fracture and nasomaxillary complex fracture, resulting from a motor vehicle accident. maxillofacial injuries resulting from trauma can be a challenge to the Maxillo-Facial Surgeon. Frequent causes of these injuries are attributed to automobile accidents, physical altercations, gunshot wounds, home accidents, athletic injuries, work injuries and other injuries. Motor vehicle accidents tend to be the primary cause of most midface fractures and lacerations due to the face hitting the dashboard, windshield and steering wheel or the back of the front seat for passengers in the rear. Seatbelts have been shown to drastically reduce the incidence and severity of these injuries. In the united states seatbelt laws have been enacted in several states thus markedly impacting on the reduction of such trauma. In the philippines rare is the individual who wears seat belts. Metro city traffic, however, has played a major role in reducing daytime MVA related trauma, as usually there is insufficient speed in traffic areas to cause severe impact damage, the same however cannot be said for night driving, or for driving outside of the city proper where it is not uncommon for drivers to zip into the lane of on-coming traffic in order to overtake the car in front ... often at high speeds. Thus, the potential for severe maxillofacial injuries and other trauma related injuries increases in these circumstances. It is however unfortunate that outside of Metro Manila or other major cities there is no ready access to trauma or tertiary care centers, thus these injuries can be catastrophic if not addressed adequately. With the exception of Le Fort II and III craniofacial fractures, most maxillofacial injuries are not life threatening by themselves, and therefore treatment can be delayed until more serious cerebral or visceral, potentially life threatening injuries are addressed first. Our patient was involved in an MVA in Zambales, seen and stabilized in a provincial primary care center initially, then referred to a provincial secondary care center for further stabilization before his transfer to Manila and then ultimately to our Maxillo-Facial Unit. There was a two week-plus delay in the definitive management because of this. As a result of the delay, fibrous tissue and bone callus formation occurred between the various fracture lines, thus once definitive fracture management was attempted, it took on a more reconstructive nature. Hospital based Oral and Maxillo-Facial Surgeons are uniquely trained to manage all aspects of the maxillo-facial trauma, and their dental background uniquely qualifies them in functional restoration of lower and midface fractures where occlusion plays a most important role. Likewise, their training in clinical medicine which is usually integrated into their residency education (12 months or more) puts them in a unique position to comfortably manage the basic medical needs of these patients. In instances where trauma may affect other regions of the body, an inter-multi-disciplinary approach may be taken or consults called for. In this instance, an opthalmology consult was important. In fresh trauma, often seen in major trauma centers (i.e. overseas), a "Trauma Team" is on standby 24 hours a day, and is prepared to assess and manage trauma patients almost immediately upon their arrival in the ER. The trauma team is usually composed of a Trauma Surgeon who is a general surgeon with subspecialty training in traumatology who assesses and manages the visceral injuries, an Orthopedic Surgeon who manages fractures of the extremities, a Neurosurgeon for cerebral injuries and an Oral and Maxillo-Facial Surgeon for facial injuries. In some institutions, facial trauma call is alternated between the "three major head and neck specialty services", namely Oral and Maxillo-facial Surgery, otolaryngology-head & neck Surgery and Plastic & Reconstructive Surgery. (ABSTRACT TRUNCATED) ( info) |
8/151. Selective laser sintering: application of a rapid prototyping method in craniomaxillofacial reconstructive surgery. Advances in technology have benefited the medical world in many ways and a new generation of computed tomography (CT) scanners and three-dimensional (3-D) model making rapid prototyping systems (RPS) have taken craniofacial surgical planning and management to new heights. With the development of new rapid prototyping systems and the improvements in CT scan technology, such as the helical scanner, biomedical modelling has improved considerably and accurate 3-D models can now be fabricated to allow surgeons to visualise and physically handle a 3-D model on which simulation surgery can be performed. The principle behind this technology is to first acquire digital data (CT scan data) which is then imported to the RPS to fabricate fine layers or cuts of the model which are gradually built up to form the 3-D models. Either liquid resin or nylon powder or special paper may be used to make these models using the various RPS available today. Selective laser sintering (SLS), which employs a CO2 laser beam to solidify special nylon powder and build up the model in layers is described in this case report, where a 23-year old Chinese female with panfacial fracture and a skull defect benefited from SLS biomodelling in the preoperative workup. ( info) |
9/151. Controlled subperiosteal tissue expansion to facilitate GBR for the placement of endosseous dental implants. The success of endosseous dental implants is enhanced when sufficient bone is present to stabilize the implant. If adequate bone for full coverage of the implant is not possible, then the use of guided bone regeneration to regenerate the missing bone has been shown to be a predictable solution. Defect size can often limit the amount of soft tissue available for coverage of the membrane, which is essential in obtaining an optimal result when using regenerative and osseointegrative principles. The treatment philosophy demonstrated in this case report uses controlled subperiosteal tissue expansion to facilitate the incorporation of guided bone regeneration with the subsequent placement of endosseous dental implants. This treatment modality provided a successful treatment for an otherwise compromised case. ( info) |
10/151. Orthodontic treatment of malocclusions caused by facial trauma. Assessment and orthodontic treatment of malocclusions caused by traffic accidents were reported. Different methods were employed to reestablish the harmony of the occlusion with consequent good facial appearance. Appliances like the activator and direct bonding techniques were illustrated. Principles and techniques of orthodontics play an important role in the treatment of the malocclusions left untreated at the time of surgical operation for the facial trauma. ( info) |