315+ quick-fire dental facts • tap a card to flip
The superior head originates from the infratemporal surface and infratemporal crest of the greater wing of the sphenoid. The inferior head originates from the lateral surface of the lateral pterygoid plate.
The superior head of lateral pterygoid muscle originates from:
1) Lateral pterygoid plate
2) Infratemporal surface and crest of greater wing of sphenoid
3) Medial surface of lateral pterygoid plate
4) Tuberosity of maxilla
The optic nerve and ophthalmic artery pass through the optic canal.
Which artery accompanies optic nerve in optic canal?
1). Facial
2). Ophthalmic
3). Middle meningeal
4). Maxillary
The infratemporal fossa communicates with the pterygopalatine fossa through the pterygomaxillary fissure. It also communicates with the orbit through the inferior orbital fissure.
Infratemporal fossa communicates with pterygopalatine fossa via:
1) Pterygomaxillary fissure
2) Foramen ovale
3) Foramen lacerum
4) Inferior orbital fissure
The danger space lies between the alar fascia and prevertebral fascia. It allows infection to spread from the neck into the posterior mediastinum and sometimes to the diaphragm.
Danger space of neck lies between:
1) Pretracheal and prevertebral fascia
2) Alar and prevertebral fascia
3) Buccopharyngeal and alar fascia
4) Carotid sheath and prevertebral fascia
The thyroid cartilage is the largest cartilage of the larynx and forms its major anterior wall.
The largest cartilage of the larynx is:
1) Thyroid cartilage
2) Epiglottis
3) Arytenoid cartilage
4) Cricoid cartilage
Ludwig's angina is a bilateral cellulitis of the submandibular, sublingual, and submental spaces, usually from second and third mandibular molars whose roots are below the mylohyoid line. It can cause airway obstruction requiring emergency tracheostomy.
Which condition is life-threatening complication of mandibular molar infection?
1). Cavernous sinus thrombosis
2). Ludwig's angina
3). Canine space infection
4). Temporal space infection
Bennett movement is the lateral bodily shift of the mandible toward the working side during lateral excursion. It is also called lateral shift or side shift.
Bennett movement refers to:
1) Pure rotation of condyle
2) Lateral bodily shift of mandible during lateral excursion
3) Protrusion
4) Retrusion
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