TMJ Arthrocentesis: When Jaw Pain Affects Chewing and Speech
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TMJ Arthrocentesis: When Jaw Pain Affects Chewing and Speech

When painkillers and jaw exercises fail, TMJ arthrocentesis flushes the jaw joint and adds hyaluronic acid to ease pain and restore mouth opening.

Temporo-mandibular Joint pain is like toothache, can also cause discomfort, affecting speaking, chewing, and even causing headache or other health problems. It may recover by times but in some cases, patients will become more and more painful. When explaining bruxism, I have briefly introduced the Temporo-mandibular Joint Disorder (TMD). In simple terms, it means that the Temporo-mandibular joint or masticatory muscles are damaged, resulting in pain or difficulty in opening the mouth. Usually, Temporo-mandibular Joint Disorder (TMD) is treated by conservative methods include: rest more, avoid eating hard food, take non-steroid anti-inflammatory painkillers, wear mouthguard to relieve muscle tension, and take muscle relaxation drugs prescribed by a doctor to relax muscles.

So what can we do when the conservative treatments do not work? We can consider irrigation on the joint, which is the Arthrocentesis of the Temporo-mandibular Joint (TMJ). This treatment aims to relieve pain of the temporo-mandibular joints which could not be relieved by analgesics and jaw exercises, and limited mouth opening due to displacement of the cartilage inside the joint. By washing out the inflammatory substances in the temporo-mandibular joint with saline, and then injecting hyaluronic acid as a joint lubricant, the purpose of reducing joint pain and increasing mouth opening is achieved.

TMJ Arthrocentesis: When Jaw Pain Affects Chewing and Speech

The temporo-mandibular joint (TMJ) bears a variety of mechanical loads when speaking and chewing. When the articular disc slides on the surface of the articular cartilage, the synovial fluid in the joint cavity can make the articular disc bear less pressure and friction, and play a protective role. Normal synovial fluid is a clear, light yellow, viscous liquid. Hyaluronic acid is one of the main components of synovial fluid, which supplies nutrients to cartilage and maintains the normal lubrication of joints. Therefore, injecting hyaluronic acid after cleaning the inflammatory tissue in the joint can supplement and increase the hyaluronic acid content in the synovial fluid and repair the damaged cartilage. At the same time, for patients with "clicking" sound during mouth opening and closing, the lubrication effect of hyaluronic acid can restore joint flexibility and improve the problem of "clicking" sound.

Most patients have increased mouth opening, pain relief, and improved joint motor function after treatment. However, if the symptoms are related to the degeneration of the jaw bone or the malocclusion caused by the jaw bone, although it is not common, there are very few patients who need to undergo reconstruction surgery of the temporo-mandibular joint (TMJ). TMJ pain causes great inconvenience to the patient's daily life, avoids the problem from worsening, and should seek medical treatment as soon as possible.

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Jaw joint problems, from conservative care to arthrocentesis, are usually assessed and managed by oral and maxillofacial surgery. If jaw pain is already affecting eating or speech, see our oral and maxillofacial surgery service.

Article Info

First published: 2 July 2023

Last reviewed: September 2026

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Reminder: You have the right to choose a Hong Kong dentist based on your individual needs. We recommend referring to the list of registered dentists published on the official website of the Dental Council of Hong Kong to make a choice best suited to your personal needs. The above content is intended to give you a brief introduction to the nature and effects of the relevant dental procedures, so that you can make informed decisions when choosing a dentist and related treatment options. All treatments have advantages and disadvantages — the key is that you must have a basic understanding of different treatments and procedures and be aware of the associated risks. The above content does not represent the professional opinion or views of any dentist or dental institution. For the sake of your health, please consult your family dentist for formal medical advice.

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Last updated: Sept 2026

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