Signs and symptoms of mandibular fracture - Pain in the jaw - Feeling that teeth no longer align correctly - Sensitivity of teeth to pressure - Swelling, bruising, and deformity - Difficulty opening the mouth - Loose teeth - Numbness in the chin and lower lip - Trismus (difficulty opening the mouth) - Step or space between teeth - Bleeding from the gums

Diagnosis of mandibular fracture - Plain film radiography (AP, lateral oblique, Townes views) - Panoramic radiography for easier detection of fractures - Computed tomography for the most accurate imaging - Use of multiple views for difficult-to-identify condylar fractures - 3D reconstruction for better visualization of fragment displacement

Classification of mandibular fracture - Various classification systems of mandibular fractures are in use. - The location of the fracture is an important classification criterion. - Mandibular fractures can occur in different zones, including condylar, coronoid process, ramus, angle of mandible, body, parasymphysis, and symphysis. - Alveolar fractures involve the alveolus of the mandible. - Condylar fractures can be intracapsular or extracapsular and may involve dislocation or fractures of the neck of the condyle. - Mandibular fractures can be classified based on the condition of the bone fragments and communication with the external environment. - Greenstick fractures occur in children and are incomplete fractures of flexible bone. - Simple fractures involve complete transection of the bone with minimal fragmentation. - Comminuted fractures occur when the bone is shattered into fragments. - Compound fractures communicate with the external environment, either through the skin or the oral cavity. - The presence or absence of teeth affects the treatment of mandibular fractures.

Treatment and reduction techniques for mandibular fracture - Consideration must be given to other illnesses that may jeopardize the patient before treating mandibular fractures. - Immediate treatment is not always necessary, except in avulsive injuries or cases with airway compromise. - A several-day delay in treatment does not significantly impact outcome or complication rates. - Reduction and fixation of the fracture are important aspects of treatment. - Avulsive type injuries and fractures with airway compromise may require immediate treatment. - Reduction involves approximating the broken bone edges. - Open reduction is done through an incision and physically manipulating the fracture into place. - Closed reduction does not require an incision and relies on aligning the teeth to bring the fracture segments into place. - Circumdental wiring is often used to align the teeth and bring the fracture segments together. - Simple fractures are usually treated with closed reduction and indirect skeletal fixation (maxillo-mandibular fixation). - Indirect skeletal fixation involves placing an arch bar secured to the teeth and securing the arch bars with wire loops. - Closed reduction with direct skeletal fixation involves passing wires through the skin and around the jaw to secure the fracture segments. - Open reduction with direct skeletal fixation allows direct manipulation of the fractured ends through an incision and can be secured with screws or plates. - Treatment options for condylar fractures include closed reduction or open reduction and fixation. - Closed reduction carries a risk of bone healing out of position, while open reduction risks temporary facial nerve damage and scarring. - Paediatric condylar fractures are challenging due to growth potential and the risk of joint ankylosis. - Edentulous mandible fractures require alternative fixation methods, such as skeletal fixation or open reduction and rigid internal fixation. - High velocity injuries may result in severe soft tissue damage, requiring careful airway management and consideration of external fixation.

Complications, prognosis, and epidemiology of mandibular fracture - Airway compromise can occur due to unstable fractures or soft tissue swelling. - Bilateral mandible fractures can cause the tongue to fall back and block the airway. - Fractures in tooth-bearing areas may result in alignment of the fracture segments when aligning the teeth. - High velocity injuries can lead to vascular injury, particularly to the internal carotid and jugular. - Loss of consciousness combined with aspiration of tooth fragments and blood can threaten the airway. - Healing time for routine mandible fractures is 4-6 weeks. - Patients who receive MMF take longer to regain mouth opening. - Patients who receive RIF have higher infection rates. - Long-term complications include loss of sensation in the mandibular nerve, malocclusion, and loss of teeth. - The risk of fracture increases with more complicated fractures. - Blunt force trauma is the leading cause of mandible fractures in North America. - Motor vehicle collisions are a leading cause in India. - High velocity injuries are more likely on battle grounds. - Prior to safety measures, motor vehicle collisions were a leading cause of facial trauma. - Unrestrained individuals in cars and unhelmeted motorcyclists have a higher risk of fracture. - Management of mandible fractures has been mentioned as early as 1700 B.C. - Open reduction was described as early as 1869. - Modern techniques, including MMF and rigid internal fixation, have been described since the 1970s. - Titanium-based rigid internal fixation became commonplace in the 1970s. - Biodegradable plates and screws have been available since the 1980s. - Condylar fractures have higher rates of malocclusion. - Intracapsular fractures have a higher rate of late-term osteoarthritis. - paediatric condylar fractures have higher rates of ankylosis and growth disturbance. - Mandibular fractures can lead to Freys syndrome. - Displacement and dislocation increase the risk of malocclusion.