1/85. Intraoral craniofacial manipulation. This case report demonstrates how to use intraoral mechanics to correct facial planes that are not parallel, namely the eye plane, ear plane and occlusal plane. Currently, our protocol states that the cranial and occlusal planes are treated first, followed by expanding (transversely or sagittally), if necessary, the maxillary arch to accommodate the dentition. This creates the template from which the remaining treatment will be rendered, which would include, proper TMJ position, correction of mandibular facial asymmetries that result from ramus growth deficiencies, (both frontal and profile), and determining the correct posterior vertical. At this point the case is in a Class I osseous relationship with all expansion completed. The teeth are then erupted into the correct positions for the orthodontic finishing of the case. ( info) |
2/85. 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) |
3/85. 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) |
4/85. 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) |
5/85. Le Fort III osteotomy to correct dish-face deformity resulting from facial trauma. Untreated craniofacial fractures may result in a deformity similar to that which results from underdevelopment of the maxilla. Such a deformity can be corrected by osteotomy simulating Le Fort type III fracture lines. This operation necessitates careful pre-operative planning which incorporates a feasibility study with the combined use of dental study casts, cephalometric radiography and life-size photographic reproductions. A case history which describes the management of late complications of a malunited class III fracture is given. ( info) |
6/85. Inappropriate treatment of traumatic dental injuries. Traumatic dental injuries are emergencies that must be treated expediently and efficiently to reduce pain and to restore function and appearance. With an increase in the incidence of traumatic dental injuries in our community (I) it is essential that the dental practitioner has "up-to-date" knowledge of dental trauma. The peak incidences of injury are 2-4 years and 8-10 years of age, with statistics revealing 30% of children suffer trauma to the primary dentition, and 22% of children suffer trauma to the permanent dentition by the age of 14 (I). The male to female ratio is 2:1. Aside from the emergency treatment and clinical decisions that must be made at the time of injury there is a need for long-term follow-up because of the high incidences of complications (2, 3). The factors that will influence the extent of injury will be energy impact, the direction of the impacting object, its shape and its resilience (4). Recent articles have raised concerns about inappropriate treatment for traumatic dental injuries (5, 6). This report will look at one such case. ( info) |
7/85. C-shape extended transconjunctival approach for the exposure and osteotomy of traumatic orbitozygomaticomaxillary deformities. In the treatment of post-traumatic deformities of the orbitozygomaticomaxillary complex resulting from trauma, the most appropriate exposure must be used. The choice of exposures includes the bicoronal approach and the periorbital incisions. When the whole orbitozygomatic complex is malpositioned, the bicoronal approach is desirable; this can be combined with buccal and eyelid incisions. However, the bicoronal approach is complicated by a longer duration of operation time, post-surgical scars that tend to show, and potential damage to the temporal branch of the facial nerve. A new approach using a C-shape extended transconjunctival approach is possible to have one field of vision to osteotomize the frontozygomatic suture, the lateral orbital wall, inferior orbital rim, lateral maxillary buttress, and zygomatic arch. It takes less operating time and the post-surgical scars are shorter than the bicoronal approach. ( info) |
8/85. The use of the Naugle orbitometer in maxillofacial trauma. BACKGROUND AND OBJECTIVES: Objective measuring of globe position is not a universal practice in the management of orbital trauma. Few studies in the literature advocate its routine use. methods AND MATERIALS: The Hertel exophthalmometer is the most widely used instrument; however, in trauma involving the lateral orbital rim (e.g., in zygoma fractures), the results are inaccurate because the displacement of the zygomatic bone interferes with its reference point on the lateral orbital rim. A more recent measuring device, the Naugle orbitometer, was introduced in 1992. It uses the superior orbital rim (frontal bar) and inferior orbital rim (malar eminence) as reference points. RESULTS AND/OR CONCLUSIONS: This article reports experience with this instrument in objective measuring the position of the globe in orbital trauma. These measurements are used 1) to monitor fractures that may not require repair but should be followed and observed for dystopia or enophthalmos, 2) to determine the adequacy of fracture repair, and 3) to determine the volume adjustment required for correcting enophthalmos. Future studies will be directed to compare the accuracy of Naugle and Hertel exophthalmometers. ( info) |
9/85. Hydroxyapatite cement in craniofacial trauma surgery: indications and early experience. BACKGROUND AND OBJECTIVES: Reconstruction of the nonstress-bearing portions of the craniofacial skeleton has recently utilized several alloplastic compounds. One such recent compound is hydroxyapatite cement (HAC)--a calcium-phosphate-based product. Its chemical structure consists primarily of calcium phosphate, as does human bone, and this similarity in the mineral structure renders it biocompatible. methods AND MATERIALS: Based on clinical indications for HAC, the authors have classified acquired craniofacial defects into four types. This article presents 5 clinical cases with craniofacial fractures, sustained in various accidents, in which hydroxyapatite cement was used to prevent cranial deformities or to reinstate contour. RESULTS AND/OR CONCLUSIONS: Complications were encountered in some of these cases, but all patients healed without any secondary complications. While the short-term experience using hydroxyapatite cement in craniofacial trauma surgery has been favorable, long-term studies in humans are required to validate the safety and efficacy of this product. ( info) |
10/85. Midface reconstruction with titanium mesh and hydroxyapatite cement: a case report. Reconstruction of the midface following trauma generally involves the simple assemblage of the existing bony fragments with the usage of miniplate osteosynthesis. Fractures of the maxilla are of significant functional as well as aesthetic importance. Occasionally, reestablishment of the bony structure is not possible without the concomitant use of bone grafts to replace areas where bone loss is present due to extensive comminution. Calvarial bone grafts are often used; however, they are not ideal, due to donor site morbidity, resorption, and difficulty in contouring the grafts to the curves of the face. This article will review a case of severe midfacial trauma in which a significant portion of the comminuted midface was successfully reconstructed with titanium mesh and hydroxyapatite cement. ( info) |