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Comparative Histomorphometric Evaluation of Healthy and Ankylosed Mandibular Condylar Process

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Abstract

Background

Temporomandibular joint (TMJ) ankylosis is one of the most disruptive maladies afflicting the masticatory system. The characteristic feature is the formation of bony mass bridging condyle with glenoid fossa. The exact pathogenesis is, however, not completely understood.

Purpose

To investigate and compare histomorphometric features of ankylosed condylar specimen with normal condylar process.

Materials and Methods

Group I included 17 post-traumatic unilateral TMJ ankylosis patients managed by excision of ankylosed mass and interpositional arthroplasty. Group II included 13 condylar head fracture patients managed by surgical debridement. The bony specimens of both the groups were subjected to histomorphometric examination for assessment of percentage of bone in trabeculae area (%BONE), osteocyte cell density (OSTCD), the presence of inflammation and fibrosis.

Results

The mean %BONE, OSTCD, %inflammation, %fibrosis was 60.4%, 340.9 mm2, 52.9 and 58.8% in group I and 29.6%, 202.6 mm2, 31 and 0% in group II.  %BONE, OSTCD and fibrosis in cases of TMJ ankylosis were significantly higher than the controls while no significant difference was observed in the presence of inflammation.

Conclusion

The persistence of joint inflammation following condylar head fracture causes aggressive reparative process leading to ankylosis.

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Authors and Affiliations

  1. Department of Oral and Maxillofacial Surgery, CMDC (CC), Lucknow, Uttar Pradesh, 226002, India

    Nandakishore Sahoo

  2. Department of Pathology, Armed Forces Medical College, Pune, Maharashtra, 411040, India

    Dibyajyoti Boruah

  3. Corps Dental Unit, Bhopal, Madhya Pradesh, 462001, India

    Ankur Thakral

  4. CMDC (NC), Udhampur, Jammu & Kashmir, India

    Rahul Kumar

  5. Department of Oral and Maxillofacial Surgery, Army Dental Centre (R&R), New Delhi, 110010, India

    Indranil Deb Roy

Authors
  1. Nandakishore Sahoo
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  2. Dibyajyoti Boruah
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  3. Ankur Thakral
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  4. Rahul Kumar
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  5. Indranil Deb Roy
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Corresponding author

Correspondence to Ankur Thakral.

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Conflict of interest

All authors have no conflict of interest.

Ethical Approval

All procedures involved in the present study involving human participant were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.

Informed Consent

Informed consent was obtained from the individual included in this study.

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Sahoo, N., Boruah, D., Thakral, A. et al. Comparative Histomorphometric Evaluation of Healthy and Ankylosed Mandibular Condylar Process. J. Maxillofac. Oral Surg. 17, 248–253 (2018). https://doi.org/10.1007/s12663-017-1051-6

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  • DOI: https://doi.org/10.1007/s12663-017-1051-6

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