Assessment of condylar morphology and position using MSCT in an Asian population
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The purpose of the present study was to investigate the volume, surface, morphometric index (MI), and position of the condyle in a normal population by applying Mimics 17.0 software. Then, the difference between left and right sides, sex, and age can be explored, which will contribute to establish the reference value of condylar morphology and position in normal individuals, and help us to study characteristics of condylar morphology and position in abnormal individuals.
Materials and methods
Three-hundred subjects were enrolled in our study from the radiology department of Shanghai Jiao Tong University Affiliated Sixth People’s Hospital. They were divided into three groups according to the age: group 1 (18–24 years old), group 2 (25–34 years old), and group 3 (35–44 years old). Each group included 100 subjects (with 50 males and 50 females). They were examined using multislice computed tomography (MSCT) after that. All images of condyle were reconstructed by Mimics 17.0 software, so as to measure the volume, surface, and MI of condyle, and to analyze the position of condyle in the articular fossa by means of joint spaces.
The differences of condylar volume, surface, and MI between left and right sides were not obvious (P > 0.05). The condylar volume and surface were greater in males than females (P < 0.05), while their condylar MI existed no difference (P > 0.05). No statistical differences were found in volume and surface among three age groups. However, the MI of group 1 was statistically lower than that of group 3 (P < 0.05). On the other hand, no significant differences were found between left and right condylar position (P > 0.05). Nevertheless, there were significant differences of condylar position regarding the gender and age (P < 0.05).
This study showed no significant differences in condylar morphology and position between left and right sides, but factors of gender and age were proven to have a certain influence on the morphology and position of the condyle. This information can be clinically useful in establishing the diagnostic criteria for condylar morphology and position in the normal Asian population.
Examination of condylar morphology and position is important for evaluating the abnormalities and bony changes that affect the temporomandibular joint (TMJ). So, this will be conducive to the diagnosis and the evaluation of therapeutic effect of temporomandibular joint diseases. Also, it is important to evaluate these indexes prior to commencing orthodontic treatment, because TMJ abnormalities play a critical role in orthodontic treatment planning.
KeywordsCondyle Volume Surface Morphometric index Condylar position
We acknowledge the funding support from Project of Shanghai Municipal Commission of Health and Family Planning (Grant No. 201540177).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
The research was approved by the local Ethical Committee of Shanghai Jiao Jong University Affiliated Sixth People’s Hospital (No. 2015-KY-003(T)).
All the participants took part voluntarily in this study, and the verbal consent from each of them was taken after being informed about the nature of the study detailedly.
- 3.Ricketts RM Variations of the temporomandibular joint as revealed by cephalometric laminagraphy. Am J Den 36:877–898Google Scholar
- 7.Cohlmia JTGJ, Sinha PK, Nanda RS, Currier GF (1996) Tomographic assessment of temporomandibular joints in patients with malocclusion. Angle Orthod 66(1):27–35. https://doi.org/10.1043/0003-3219(1996)066<0027:TAOTJI>2.3.CO;2 PubMedGoogle Scholar
- 8.Menezes AV, de Almeida SM, Boscolo FN, Haiter-Neto F, Ambrosano GM, Manzi FR (2008) Comparison of transcranial radiograph and magnetic resonance imaging in the evaluation of mandibular condyle position. Dentomaxillofac Radiol 37(5):293–299. https://doi.org/10.1259/dmfr/31850388 CrossRefPubMedGoogle Scholar
- 11.Shahidi S, Vojdani M, Paknahad M (2013) Correlation between articular eminence steepness measured with cone-beam computed tomography and clinical dysfunction index in patients with temporomandibular joint dysfunction. Oral Surg Oral Med Oral Pathol Oral Radiol 116(1):91–97. https://doi.org/10.1016/j.oooo.2013.04.001 CrossRefPubMedGoogle Scholar
- 17.Honey OB, Scarfe WC, Hilgers MJ, Klueber K, Silveira AM, Haskell BS, Farman AG (2007) Accuracy of cone-beam computed tomography imaging of the temporomandibular joint: comparisons with panoramic radiology and linear tomography. Am J Orthod Dentofac Orthop 132(4):429–438. https://doi.org/10.1016/j.ajodo.2005.10.032 CrossRefGoogle Scholar
- 21.Solberg WK, Hansson TL, Nordstrom B (1985) The temporomandibular joint in young adults at autopsy: a morphologic classification and evaluation. J Oral Rehab 12(4):303–321. https://doi.org/10.1111/j.1365-2842.1985.tb01285.x CrossRefGoogle Scholar
- 28.White SC, Pharoah MJ. Oral Radiology: Principles and interpretation. Elsevier Health Science 2009; 6th editionGoogle Scholar