The Journal of Contemporary Dental Practice

Register      Login



Volume / Issue

Online First

Related articles

VOLUME 21 , ISSUE 12 ( December, 2020 ) > List of Articles


Cone-beam Computed Tomographic Evaluation of the Anatomical Changes of Temporomandibular Joint Use of Pre-post Dentures: A Time-control Study

Vaibhav K Singh, Saifullah Akhtar, Prabhat Mishra, Sunny Sharma

Citation Information : Singh VK, Akhtar S, Mishra P, Sharma S. Cone-beam Computed Tomographic Evaluation of the Anatomical Changes of Temporomandibular Joint Use of Pre-post Dentures: A Time-control Study. J Contemp Dent Pract 2020; 21 (12):1354-1360.

DOI: 10.5005/jp-journals-10024-2987

License: CC BY-NC 4.0

Published Online: 13-04-2021

Copyright Statement:  Copyright © 2020; The Author(s).


Aim and objective: The growth of the temporomandibular joint (TMJ) gets affected by multiple factors like aging, occlusion state, and by the movement of the jaw while masticating and swallowing. Radiographic imaging is often utilized as a vital diagnostic adjunct in the evaluation of certain examinations of the TMJ. Materials and methods: In this in vivo study, 30 male participants with mean age 55 years, having edentulous maxillary and mandibular arches from the Outpatient Department of Prosthodontics, were randomly selected. Group I (n = 30) patients who were edentulous for the last 4–5 years but without wearing dentures. Whereas group II (n = 30) patients who were edentulous for the last 4–5 years but were wearing dentures for this period. Maxillary and mandibular dentures were fabricated and delivered to subjects. Subjects were subjected to the TMJ analysis with the help of CBCT. Radiological images of dentomaxillofacial structures were analyzed by a specialist with a dual monitor inside a darkened silent room. On the monitor, three times measurements were recorded followed by calculation of mean value. The recordings were taken on both sides and thus, 210 sites were analyzed altogether, followed by the statistical analysis using SPSS software version 15.0. Results: The mean ages of group I and II were 59.00 ± 6.74 and 58.27 ± 6.75 years, respectively. The intra- and intergroup comparisons were done using a one-sample t-test. Differences in mean intercondylar width in groups I and II were not found to be statistically significant. The difference in mean length of glenoid fossa was not statistically significant at any of the above observation periods. A continuous decline in mean length of glenoid fossa was observed with time in both groups. The range of change in articular eminence length was found to be statistically significant for both the groups (p < 0.05). Conclusion: This study shows that the articular eminence flattening is correlated with age; on the other hand, the rate of deformation was found significantly more in total edentulous subjects as compared to subjects having normally maintained occlusion. The anatomical changes inside the TMJ have been much greater expressed within the completely edentulous subjects in whom the angle of sagittal condyle path declines and so does the articular eminence height. Clinical significance: It is essential to provide the edentulous patient with early prosthetic and occlusal rehabilitation after extractions to prevent the anatomical changes in TMJ.

  1. Relationship between patient characteristics, mandibular head morphology and thickness of the roof of the glenoid fossa in symptomatic temporomandibular joints. Dentomaxillofac Radiol 2007;36(5):277–281. DOI: 10.1259/dmfr/56344782.
  2. Radiological examination of the articular eminence morphology using cone beam CT. Dentomaxillofac Radiol 2012;41(3):234–240. DOI: 10.1259/dmfr/24780643.
  3. Accuracy of cone-beam computed tomography imaging of the temporomandibular joint: comparisons with panoramic radiology and linear tomography. Am J Orthod Dentofacial Orthop 2007;132(4):429–438. DOI: 10.1016/j.ajodo.2005.10.032.
  4. Diagnostic accuracy of cone beam computed tomography in detection of simulated mandibular condyle erosions. Dental Hypotheses 2015;6(3):97. DOI: 10.4103/2155-8213.163813.
  5. Evaluation of condylar position by CBCT after static and dynamic registration in edentulous patients. Revista Portuguesa de Estomatologia, MedicinaDentária e Cirurgia Maxilofacial 2015;56(1):9–17.
  6. Articular eminence inclination, height, and condyle morphology on cone beam computed tomography. Sci World J 2014;2014:761714. DOI: 10.1155/2014/761714.
  7. TMJ imaging by CBCT: current scenario. Ann Maxillofac Surg 2013;3(1):80. DOI: 10.4103/2231-0746.110069.
  8. Cone beam CT and conventional tomography for the detection of morphological temporomandibular joint changes. Dentomaxillofac Radiol 2007;36(4):192–197. DOI: 10.1259/dmfr/25523853.
  9. Evaluation of simulated bone lesion in the head of the mandible by using multislice computed tomography. J Appl Oral Sci 2009;17(5):521–526. DOI: 10.1590/S1678-77572009000500030.
  10. Evaluation of the prevalence of bifid mandibular condyle detected on cone beam computed tomography images in a Turkish population. Int J Morphol 2015;33(1):43–47. DOI: 10.4067/S0717-95022015000100006.
  11. Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography. Braz Oral Res 2013;27(6):503–509. DOI: 10.1590/S1806-83242013000600010.
  12. Comparison of the position of the mandibular fossa using 3D CBCT in different skeletal frames in human caucasic skulls. Int J Stomatol Occlus Med 2009;2(4):179–190. DOI: 10.1007/s12548-009-0031-y.
  13. The effect of tooth loss on the TM-joint articular eminence inclination. Coll Antropol 2000;24(1):37–42.
  14. Relationship between the thickness of the roof of glenoid fossa, condyle morphology and remaining teeth in asymptomatic European patients based on cone beam CT data sets. Dentomaxillofac Radiol 2013;42(3):90929410. DOI: 10.1259/dmfr/90929410.
  15. A comparative study of accuracy of detection of surface osseous changes in the temporomandibular joint using multidetector CT and cone beam CT. Dentomaxillofac Radiol 2012;41(3):185–191. DOI: 10.1259/dmfr/24985971.
  16. Evaluation of bone changes in the temporomandibular joint using cone beam CT. Dentomaxillofac Radiol 2012;41(1):24–29. DOI: 10.1259/dmfr/17815139.
  17. A retrospective study of the prevalence and reliability of the diagnosis of soft tissue calcification of the temporomandibular joint in cone beam computed tomography images. King Saud Univers J Dent Sci 2013;4(2):81–85. DOI: 10.1016/j.ksujds.2013.03.003.
  18. The thickness of the roof of the glenoid fossa in the temporomandibular joint: relationship to the MRI findings. Dentomaxillofac Radiol 2006;35(5):357–364. DOI: 10.1259/dmfr/30011413.
  19. CBCT analysis of bony changes associated with temporomandibular disorders. CRANIO® 2016;34(2):88–94. DOI: 10.1179/2151090315Y.0000000002.
  20. CT and MR of the temporomandibular joint: comparison with autopsy specimens. AJR Am J Roentgenol 1987;148(6):1165–1171. DOI: 10.2214/ajr.148.6.1165.
  21. Evaluation of condylar morphology following orthognathic surgery on digital panoramic radiographs. Could methodology influence the range of “normality” in condylar changes? Dentomaxillofac Radiol 2013;42(7):20120463. DOI: 10.1259/dmfr.20120463.
  22. Prevalence of temporomandibular disorders in a population of complete denture wearers. Gerodontology 2012;29(2):e865–e869. DOI: 10.1111/j.1741-2358.2011.00574.x.
  23. TMJ vibrations in asymptomatic patients using old and new complete dentures. J Prosthodont 2010;19(6):438–442. DOI: 10.1111/j.1532-849X.2010.00614.x.
  24. Application of cone beam computed tomography for assessment of the temporomandibular joints. Aust Dent J 2012;57:109–118. DOI: 10.1111/j.1834-7819.2011.01663.x.
  25. Correlation between bony changes measured with cone beam computed tomography and clinical dysfunction index in patients with temporomandibular joint osteoarthritis. J Craniomaxillofac Surg 2014;42(7):1402–1407. DOI: 10.1016/j.jcms.2014.04.001.
  26. Flattening of the posterior slope of the articular eminence of completely edentulous patients compared to patients with maintained occlusion in relation to age using computed tomography. J Baghdad College Dentis 2015;325(2219):1–6. DOI: 10.12816/0015297.
  27. Assessments of inclinations of the mandibular fossa by computed tomography in an Asian population. Clin Oral Investig 2012;16(2):443–450. DOI: 10.1007/s00784-011-0518-y.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.