CLASSIFICATION:

1. Based on type of tissue causing Ankylosis:

2. Based on the Side Involved :

• Unilateral Ankylosis

• Bilateral Ankylosis

3. Based on Severity of Ankylosis:

• Partial
• Complete

4. Based on Etiology of Trismus:

• Pseudo Ankylosis
• True Ankylosis

SAWHNEY’S CLASSIFICATION:

CLINICAL FEATURES:

INVESTIGATIONS:

1. Radiographs:

– OPG

-PA VIEW:

– Lateral Oblique View of Mandible:

Ankylotic mass can seen in the Anteroposterior direction.

2. Lateral Cephalogram:

3. CT Scan:

Helpful as it gives an accurate picture of proximity of ankylotic mass to important structure,that cannot be seen in a radiograph.

RADIOGRAPHIC FEATURES:

• Decreased ramus height on the affected site.
• Lack of joint space.
• Normal joint space obliteration by bone/fibrous growth.
• Elongation of coronoid process.
• Deep antigonial notch.

REFERENCES:

• Textbook of Oral & Maxillofacial Surgery, Chitra Chakravarthy (2nd Edition).
• DentalHypothesis.com
• Europe PMC
• PocketDentistry.com
• SciELO.com