LIMITING STRUCTURES – MAXILLA

1. ANTERIORLY- Labial vestibule which extends from right buccal frenum to to left.

FRENUM
- 1 labia & 2 buccal
- Should reline (2mm)
- If not will lose frenum & cause pain for the patient
NB: If high labial frenum --> Do frenectomy, it is safe as it has no muscle attachment but only
fibrous tissue

2. LATERALLY- on either side, buccal vestibule extending from the buccal frenum till hamular notch
POSTERIOR EXTENSION OF TRAY:
- Post vibrating line***
- Hamular notch** not hamular process (which is beyond the notch itself OK)
- Approx 2mm anterior to Fovea palatine *

NB: If tray extension crosses & goes beyond hamular notch ie up until the hamular process then the patient will c/o pain.
Therefore it must extend up to hamular notch only OK!