MANDIBULAR OBLIQUE LATERAL PROJECTION

mand. oblique lateral projection

• Mandibular body and mandibular ramus
• an aiming cylinder is best used
• patients holds the casette
• speed films could be either fast or moderate.
• not commonly used projection

MANDIBULAR BODY

film placement

• casette is placed againts patient's cheek
• centered over first molar
• lower border parallel with inferior border of Mandible
• extending atleast 2 cm below

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HEAD POSITION

• head is tilted toward the side being examined
• mandible is protruded

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PROJECTION OF CENTRAL RAY

• CR is directed towards 1st molar region from a point 2cm below the angle on the tube side.
• CR should be close to perpendicular to the plane of the film as possible.

exposure parameters

• 65 kvp
• 10 mA
• 1/4 seconds (medium speed screens &film)

MANDIBULAR RAMUS

film placement

• casette is placed over the ramus
• far enough post. to include the condyle
• lower body of casette: approx. parallel with inferior border of Mand.
• should extend at least 2 cm below the border.

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head position

• head should be tilted toward the side of Mand. being examined
• until a line between mandibular angle next to tune and condyle
• away from the tube parallel to the floor
• patient should protrude

projection of central ray

• CR is directed posteriorly toward the center of ramus
• from a point 2 cm below the inf. border of thr first molar region

exposure parameters

• 65 kvp
• 10 mA
• 1/4 seconds (medium speed screens &film)

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