Directions for Use
69
Operation Manual
Suppl. : Improper beam positioning on the mandibular third tooth may have the following
complications;
1. The patient's face inclined downward
Problems
• Blurred root apexes of mandibular front
teeth.
• Patient's hyoid bone overlapped on the
mandibular front teeth.
Possible causes
• The patient's face inclined downward.
• The patient's forehead inclined anteriorly.
Corrective measure
• Align the reference facial plane to the
horizontal reference line (horizontal line).
2. The patient's face inclined upward
Problems
• Blurred maxillary front teeth.
• Patient's hard palate overlapped on the
root apexes on the maxillary tooth row.
Possible causes
• The patient's face inclined upward.
• The patient's mandible inclined anteriorly.
Corrective measure
• Align the reference facial plane to the
horizontal reference line (horizontal line)
Adjusting the head support
Slide the head support toward the
patient’s forehead by gripping its base
to stabilize as well as immobilize the
patient's head.
* Caution
• Do not open or close the head support forcedly without gripping its base. Otherwise, the
patient may be injured.
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