Axiography of the TMJ

Axiography is a research method that evaluates movements and force loads in the maxillofacial area during basic functions. The integration of modern technologies into axiography allows for a detailed study of the features of each case, ensuring high accuracy in the diagnosis and subsequent treatment of diseases of the maxillofacial area.
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Principles and application of axiography in dentistry

Axiography in dental practice is a method developed to study the functioning of the temporomandibular joint (TMJ), and is an important tool in the work of gnathologists, orthopedists and orthodontists. The essence of the method is to record jaw movements, identify pathologies and their causes. During the diagnostic process, two types of data recording are used:

  • Mechanical. Has less accuracy compared to modern methods
  • Electronic. Based on ultrasonic measurement and digital data processing. Among the instruments, axiographs “Arcus digma”, “Cadiax Compact” and others stand out

Specialized ultrasonic axiograph sensors record movements, thereby providing the opportunity for a detailed analysis of the operation of the TMJ. Based on the collected data, a computer program generates a visualization that allows the doctor to evaluate the anatomy and physiology of the joint, including the parameters of the joint space, the contours of the fossae, and the relative positions of the structures. Occlusal relationships, the central relationship of the jaws, as well as pathological changes, such as displacement of the intra-articular disc, symmetry of the TMJ, become obvious to the specialist.

As a result of diagnostics, it is possible not only to study the bite and individual characteristics of the patient in detail, but also to develop an accurate treatment plan, including the selection of prostheses and devices, as well as a preview of the results of the upcoming therapy. The advantage of digital axiography is the ability to accurately model the jaw structure and an integrated approach to treatment, taking into account all aspects of the functioning of the TMJ.

Principles and application of axiography in dentistry

Advantages of digital axiography in the diagnosis of TMJ

Digital axiography provides high accuracy in the study of the temporomandibular joint. This method allows for detailed analysis of the numerous jaw movements required for chewing food and articulating speech.

Data obtained using digital axiography helps to select a treatment method. Disturbances in the functioning of the dental system, even minimal ones, can lead to serious consequences. Therefore, their timely detection and correction using digital technologies are important for maintaining the health and quality of life of patients. This approach allows for the most accurate restoration of TMJ function, ensuring long-term treatment results.

Modern technologies provide the following opportunities:

  • Treatment planning Determining the sequence and methods of intervention to effectively eliminate pathologies
  • 3D modeling Development of precise structures for the correction and restoration of TMJ functions
  • Diagnosis of the causes of violations Identification of sources of dysfunction that provoked changes in the functioning of the joint

The influence of defects in orthopedic structures on the health of the TMJ

Incorrect use of orthopedic devices leads to serious consequences for the temporomandibular joint. The cause is such pathologies as:

  • Increased load on the TMJ, which contributes to the development of arthrosis, arthritis and other degenerative changes
  • Discomfort in the maxillofacial area, manifested by painful sensations
  • Frequent headaches caused by joint dysfunction
  • Pathological mobility of teeth, negatively affecting their safety
  • Impairments in occlusion, leading to the abrasion of tooth enamel and the development of dental diseases

Accurate diagnosis using electronic axiography, which records jaw movements, provides the basis for successful treatment. Using data obtained from sensors and processed by specialized programs, doctors are able to predict the results of therapy and significantly increase its effectiveness. Considering that TMJ dysfunction affects a significant percentage of the population, timely correction and restoration of the dental system using axiography becomes a key point in preventing long-term negative consequences.

Criteria for the use of axiography in dentistry

The individual characteristics of jaw movement in each person require a unique approach to the diagnosis and treatment of pathologies of the dentofacial apparatus. Axiography in dentistry provides the opportunity for detailed analysis and is the method of choice under the following conditions:

  1. Identification of functional disorders of the TMJ
  2. Diagnostics of internal joint dysfunctions
  3. Assessing the condition before using occlusal splints and bite blocks
  4. Preparation for surgical interventions in the maxillofacial area
  5. Planning orthodontic treatment using braces, retainers and other orthopedic devices
  6. Development of a prosthetic scheme

The integrated use of axiography in clinical practice can significantly increase the effectiveness of treatment. This method is key in developing a treatment strategy tailored to the unique anatomical and functional characteristics of each patient, which leads to a successful and long-term result.

General information about the procedure

Stages of the axiography procedure

The process of temporomandibular joint axiography varies depending on the equipment used. The mechanical method includes the following steps:

  1. Fixing the trajectory of the lower jaw using a stylus and paper attached to the face bow or head cap
  2. Determination of Bennett angle using a micrometer
  3. Registration of jaw movements: opening by 12 mm, subsequent closing, moving forward and returning back to the central position
  4. Fixation of data on the position of the lower jaw and its movements using special instruments and micrometers

This approach requires careful and precise execution of each step, including manually repositioning the axiograph parts and recording the data. In modern practice, electronic axiographs are more often used, providing a simpler and more accurate study. The results of such studies are loaded into computer programs, where they are analyzed and used to create three-dimensional models. This technology greatly simplifies the procedure and increases the accuracy of diagnostic data, which contributes to more effective treatment planning.

Computer axiography provides precise information about jaw movements in three dimensions. The main stages of the procedure include:

  • Installation of a facebow with sensors on the patient’s head, fixation with stabilizers and a nose pad
  • Installation of ear clips in the ear canals to stabilize the equipment
  • Position of the upper tray with magnetic mount for the mandibular sensor
  • Installation of a paraocclusal fork on the lower jaw to record movements

Ultrasonic sensors record the smallest vibrations and transmit the data for computer processing. Specialized programs analyze the data obtained, identifying any pathologies and distortions in the movements of the jaw, including divergence of trajectories, curvature of lateral movements, and displacement of the movement schedule. The diagnosis is made based on these data and related studies.

Thanks to the information obtained, it is possible to manufacture an articulator that accurately copies the movements of the patient's jaw. This device is used to produce dentures and crowns, ensuring a match to the anatomical features of the patient. This allows you to minimize visits to specialists, since all fittings and corrections are made on the articulator.

The cost of axiography varies depending on the equipment used, diagnostic purposes and the qualifications of the specialist. Although more expensive than mechanical alternatives, computerized axiography offers significantly more flexibility and accuracy, making it the preferred choice in modern dentistry.

Negative consequences of using unadapted prostheses

Prosthetics without taking into account individual characteristics can lead to a number of serious discomforts and diseases. The key problems are:

  • Discomfort and pain when moving the mouth
  • Painful sensations in the masticatory muscles and temporomandibular joint
  • Crunching and clicking in the joint, indicating its improper functioning
  • Increased fatigue due to constant tension in the jaw
  • Headaches, especially in the temple area, caused by improper load on the joint

Electronic axiography avoids these problems by providing accurate data on mandibular movement. Based on them, a treatment protocol is developed that involves the use of 3D technologies to accurately predict the outcome of therapy. This approach to diagnosis and treatment prevents the development of complexes in patients associated with limited movements of the lower jaw, and helps restore healthy and comfortable function of the entire dental system.

Modern methods of diagnostics and dental treatment at "K+31"

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Shcherbakova
Valentina Frantsevna
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Egorova
Natalya Vasilevna
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Natalya Vladimirovna
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I can't stand advertising - both listening to it and making it. And Sergey Georgievich doesn't need it. I'm more concerned about people who want to get rid of the rot in their mouth, the unpleasant odor, the gastritis caused by the same rot: if you need an adequate, professional surgeon who patiently explains the situation, offering possible alternatives, then drop all pseudo-important and important matters right now and run, run to S.G. immediately!! And finally, between you and me: if you've noticed even a hint of masochism in yourself, S.G. will disappoint you. Sincerely yours - Raf, who visited S.G.'s office with great pleasure only yesterday and left it with even greater pleasure.
15.12.2024
Mezhlumyan Rafik Sumbatovich
I had my canals with inflammation treated under a microscope by this doctor. A complicated upper sixth. Everything went great! After 6 months, I can say that finally the tooth doesn't bother me. The doctor has a very light hand. Now I will only be treated by him.
06.12.2024
Susekova Olga
I would like to express my deep gratitude to Alexey Andreevich and his assistant, unfortunately I forgot to clarify her name) They are simply masters of their craft, I have never had such pleasant visits to the dentist, absolute professionals in their field, they removed two wisdom teeth at once, I did not even notice how the process went. The doctor explained everything, answered all questions and gave recommendations, and the whole process took place during a pleasant conversation. I recommend everyone to contact only him!
25.11.2024
Kuleshov Kirill Dmitrievich
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