The temporomandibular joint is an important part of the human body, what causes temporomandibular jo

The condition of temporomandibular joint dislocation in patients is generally caused by exogenous elements and endogenous elements, exogenous elements refer to the situation that the patient's lips are in the open mouth, and then the lower jaw part is subjected to external pressure, which in turn causes the patient's jaw to be unable to be fully automatically calibrated in the future, and then leads to the loosening of the tendons around the bone joint. The key endogenous element refers to the patient's long-term yawning, singing too hard or eating with his mouth wide open, which will lead to acute dislocation of the patient's temporomandibular joint if it is unreasonable.

There are two key causes of temporomandibular joint dislocation: endogenous causes. It is often caused by the patient's sudden opening of the mouth too wide, such as laughing, yawning profusely, or opening the mouth for a long time, which is likely to lead to temporomandibular joint dislocation.

If a patient has had a temporomandibular joint dislocation in the past and has not been properly treated, the joint capsule will be damaged, and it is even possible that the dislocation may occur during meals. Exogenous sake. Because the lower jaw area is pressed by the force when the patient's lips are extended, the condyle slides down and cannot be repaired on its own.

Temporomandibular joint dislocation refers to the slippage of the condyle outside the joint socket, exceeding all the normal degree of joint movement, and cannot return to the point of origin on its own. Patients with masticatory muscle disorders or joint structure disorders often experience acute anterior dislocations due to yawning, singing, biting lumpy food, nausea and vomiting. Acute anterior dislocations may also result in the joint nodule being too high or the anterior slope of the joint nodule being too steep.

Iatrogenic elements include the use of mouth openers, general anaesthesia, and the indiscriminate use of violence during the use of immediate video laryngoscopy through dental catheterization. Traumatic dislocations are common in acute anterior dislocations that are not treated appropriately and have loose osteoarticular tendons and joint capsule. In addition, recurrent traumatic dislocations often occur in the elderly, diffuse long-term active hepatitis and its muscle dysfunction, and ligament laxity.

Acute anterior dislocation or ** dislocation, if not calibrated for several weeks, is called old dislocation.

Temporomandibular joint dislocation may be the result of trauma or violence, and damage to the temporomandibular joint is likely to cause bone and joint dislocation. It may also be caused by long-term open mouth or excessive sneezing and yawning, which will cause some bone and joint parts to be compressed, which will also cause the dislocation of some bone and joint parts of the patient, and there will be some pain, excessive theme activities and inconvenient eating. It is necessary to choose a professional doctor to carry out the method of manual reduction**, and in more severe cases, surgical calibration is required.

It is related to the usual standing posture, if you are in an upright position for a long time, it will increase the pressure on the mouth, or if you open your mouth wide to eat or laugh, it may also be an external shock.

Because our temporomandibular joint has been impacted, the joint will be dislocated, and we have such a situation, so we must go to the hospital in time and let the doctor help deal with it.

Failure to use the correct posture, incorrect way of speaking, frequent opening of the mouth when yawning, use the temporomandibular joint with great force, and lack of good living habits.

Answer]:B Acute anterior dislocation is the most common temporomandibular joint dislocation in clinical practice, which mainly has two factors: endogenous and exogenous. Endogenous factors include yawning, singing, laughing, eating with a large mouth, and dental with a large mouth open for a long time**.

Exogenous factors refer to the impact of external forces on the mandibular stove in the open state; Transoral tracheal intubation, laryngoscopy and esophageal endoscopy, use of open-opening devices, and use of forceps in neonates are hidden rules such as improper force to make the mandibular opening too large, and the condyle process can not return spontaneously when it crosses the joint nodule; Loose joint capsule and ligaments, habitual jaw hypermovement, and rapid jaw movement can increase the risk of anterior dislocation.

Answer]: A The clinical manifestations of unilateral temporomandibular joint dislocation are: the affected side is open, the mouth cannot be closed, saliva is outflowed, and speech is slurred; the affected side of the jaw is extended anteriorly and deviated contralaterally, and the cheeks are flattened; Due to condylar dislocation, there is a depression palpated in front of the tragus of Zhenghui on the affected side, and the dislocated condyle can be palpated under the zygomatic arch; The midline of the mental part and the midline of the lower preincisor are biased towards the unaffected side, and the posterior teeth of the unaffected side are Qingqing <>

The temporomandibular joint dislocation caused by the absence of beams should be reduced in time, and the mandibular activity should be restricted after reduction to prevent **. Reduction method: Usually manual reduction.

The patient sits upright in the chair with his head resting on the back of the chair or the wall, and the sitting position should be low, so that the position of the patient's mandible is lower than the level of the elbow joint when the surgeon's forearm is drooping; The surgeon stands in front of the patient, inserts the thumbs of both hands into the patient's mouth, and places them on the surface of the lower collar molars (the two thumbs are wrapped with gauze to prevent the patient from accidentally injuring them) or on the alveolar ridge in the molar area. The remaining fingers hold the mandible, the thumb pushes down on the mandible, and the remaining fingers push the chin up and back. During reduction, the masticatory muscles must be relaxed, and the surgeon can try to distract the patient and gently shake the mandible up and down, gradually increasing the shaking action, and immediately re-arubinize the sensitive position when the patient's muscles are relaxed. After reduction, the lower jaw can be immobilized with a craniomaxillary bandage2 for 3 weeks.

AnswerCorrect Answer: (1) Bilateral dislocation: Jaw movement disorder, mouth cannot be closed, drooling, slurred speech, difficulty chewing and swallowing.

Examination shows that the anterior teeth are open and reversed, and there is contact between the teeth in the molar area. The lower jaw is stretched forward, the cheeks are flattened, and the face is lengthened. The tragus is palpated anteriorly, and the dislocated condyle can be palpated under the zygomatic arch.

Lateral x-rays of the joint show a condylar prolapse located anteriorly and above the joint tubercle.

2) Unilateral dislocation: The above 3 symptoms are only shown on the affected side, the midmental line of the auspicious slag removal and the midline of the lower anterior teeth are biased to the unaffected side, and the posterior teeth on the unaffected side are reversed.

Answer]: B The clinical manifestations of acute anterior dislocation are abnormal mandibular movement, opening, inability to close the mouth, saliva outflow, difficulty in chewing and swallowing, the anterior teeth can be seen to be open and reversed during examination, only part of the sail rubber contact is in the molar area, the lower jaw is protruded, the cheeks are flattened, the condyle is dislocated, the tragus is slippery and there is a depression in front of palpation, and the dislocated condyle can be palpated under the zygomatic arch.

Answer]: C acute anterior temporomandibular joint dislocation, the clinical expression of the patient is now unable to close the mouth, the anterior teeth are open, the anterior fingerline of the mandibular is wide and the anterior fingerline of the mandible is biased to the unaffected side, and the posterior teeth on the unaffected side are reversed.

Answer]: The dislocated condyle can be palpable under the zygomatic arch. Acute anterior dislocations can be unilateral or bilateral. The symptoms of bilateral dislocation are: (1) abnormal mandibular movement, the patient is open-mouthed, and it is difficult to speak, chew and swallow; On examination, anterior teeth <> may be seen

Reverse <> (2) The lower jaw is protruded and the cheeks are flattened. (3) Palpate the condyle with a depression in front of the tragus, and a condyle that is only wide to dislocated can be palpated under the zygomatic arch. (4) X-ray shows that the condylar prolapse is located in the anterior and upper part of the joint tubercle.

In patients with unilateral acute anterior displacement, the midline of the chin and the midline of the lower anterior teeth are biased towards the unaffected side, and the posterior teeth on the unaffected side are reversed <>