ASSESSMENT METHOD FOR INTRA-JOINT DISORDERS IN PATIENTS WITH ARTICULATION-OCCLUSIVE DISORDERS AND TMJ DYSFUNCTION BASED ON CONE-BEAM COMPUTED TOMOGRAPHY DATA
This article presents a comparison of cone-beam computed tomography (CBCT) results and joint space measurements in patients with and without occlusal-articulation disorders and TMJ dysfunction. Additionally, it describes the development of a calculator based on these data for determining the direct...
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| Format: | Article |
| Language: | English |
| Published: |
Poltava State Medical University
2024-10-01
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| Series: | Український стоматологічний альманах |
| Subjects: | |
| Online Access: | https://dental-almanac.org/index.php/journal/article/view/682 |
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| Summary: | This article presents a comparison of cone-beam computed tomography (CBCT) results and joint space measurements in patients with and without occlusal-articulation disorders and TMJ dysfunction. Additionally, it describes the development of a calculator based on these data for determining the direction and degree of mandibular displacement and for assessing interalveolar height.
Мaterials and methods. The study involved individuals with functional disorders of the masticatory apparatus and occlusal disorders (experimental group n=150) and practically healthy individuals (control group, n=30). Measurements of joint spaces in the TMJ were evaluated in sagittal and coronal projections, and their ratio was calculated. The t-test of unequal variances, the Welch test, was used for statistical data processing.
The results. When assessing the displacement of the mandible in the patients of the test group, bilateral distal displacement of the heads of the lower jaw (LM) was found in 103 (68.67%) indiciduals, unilateral distal displacement of the heads of the mandible was detected in 32 (21.33%), the presence of a significant displacement was found in 72 (48.00%); reduction of the interalveolar height in at least one TMJ was found in 130 (86.67%) patients, bilateral reduction of the interalveolar height was found in 82 (54.67%) patients, among them 51 (62.20%) had bilateral distal displacement HL, a unilateral decrease in the interalveolar height was found in 48 (32.00%) patients, while among these patients, 27 (56.25%) had a more pronounced distal shift of the HL on the side of the decrease in the interalveolar height; in 44 (29.33%) patients, the body displacement of the LV to the right, of them in 39 (88 64%) slight bilateral distal displacement of the LV, with a higher ratio in the right TMJ. Analysis of the obtained data using Welch's test revealed a statistically significant difference (p ≤ 0.000) in comparison to the control group, based on the average values of the observed displacements.
Conclusions. The assessment of joint space parameters during cone-beam CT of the TMJ in patients with functional TMJ disorders and occlusal-articulation issues, compared to a control group, allows for the identification of mandibular displacement, including its direction and degree. Additionally, it facilitates the evaluation of interalveolar height deficit. A calculator based on these data was developed, incorporating statistical tests at p < 0.05 and using 95% confidence intervals.
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| ISSN: | 2409-0255 2410-1427 |