Maloney Karl
Department of Oral and Maxillofacial Surgery, St. Luke's Hospital, Bethlehem, Pennsylvania.
Craniomaxillofac Trauma Reconstr. 2015 Sep;8(3):246-50. doi: 10.1055/s-0034-1399801. Epub 2015 Jan 13.
In general, dentoalveolar fractures are a common injury seen in emergency departments, dental offices, and oral and maxillofacial surgery practices. These injuries can be the result of direct trauma or indirect trauma. Direct trauma more often causes trauma to the maxillary dentition due to the exposure of the maxillary anterior teeth. Indirect trauma is usually the result of forced occlusion secondary to a blow to the chin or from a whiplash injury. Falls are the most common mechanism of injury seen in the pediatric group. In adolescents, many of these fractures are sustained during sporting activities. However, the use of mouth guards and other protective equipment has decreased this number. Most adult injuries are caused by motor vehicle accidents, contact sports, falls, bicycles, interpersonal violence, medical/dental mishaps, and industrial accidents. Early intervention to reduce and stabilize the fracture is required to establish a bony union and ensure correct function. Most dentoalveolar fractures have bilateral stable adjacent dentition and are treated with a closed technique utilizing an acid-etch/resin splint followed by splint removal at 4 weeks. Other inferior stabilization treatments used are arch bars and other wiring techniques. It is widely accepted that semirigid stabilization techniques, such as an acid-etch/resin splint or wiring procedures, are adequate to treat dentoalveolar fractures. This is in contrast to the treatment of mandible fractures where AO principles of rigid fixation are often followed. Fractures that are unable to be reduced sometimes necessitate an open reduction followed by internal fixation, sometimes using a secondary splint for mobile teeth. In those rare cases when there are not stable adjacent teeth bilaterally other modalities must be considered. In the present report, two cases are presented where circummandibular wires were used to treat fractured mandibular dentoalveolar segments adjacent to edentulous areas.
一般来说,牙槽突骨折是急诊科、牙科诊所及口腔颌面外科常见的损伤。这些损伤可能是直接创伤或间接创伤所致。由于上颌前牙暴露,直接创伤更常导致上颌牙列损伤。间接创伤通常是因下巴受撞击或挥鞭样损伤继发的强制咬合所致。跌倒在儿童组中是最常见的损伤机制。在青少年中,许多此类骨折是在体育活动中发生的。然而,使用口腔防护器及其他防护装备已使这一数字有所下降。大多数成人损伤由机动车事故、接触性运动、跌倒、自行车事故、人际暴力、医疗/牙科事故及工业事故引起。需要早期干预以复位并稳定骨折,从而实现骨愈合并确保功能正常。大多数牙槽突骨折有双侧稳定的相邻牙列,采用酸蚀/树脂夹板的闭合技术治疗,4周后拆除夹板。其他使用的低位稳定治疗方法是牙弓夹板及其他结扎技术。人们普遍认为,半刚性稳定技术,如酸蚀/树脂夹板或结扎程序,足以治疗牙槽突骨折。这与下颌骨骨折的治疗形成对比,下颌骨骨折治疗常遵循AO坚强内固定原则。无法复位的骨折有时需要切开复位内固定,有时对活动牙使用辅助夹板。在那些双侧没有稳定相邻牙的罕见情况下,必须考虑其他方法。在本报告中,介绍了两例使用下颌周围结扎治疗无牙区相邻的下颌牙槽突骨折节段的病例。