border moulding is done after special tray procedure. notes on border moulding is presented in this slide there are total 14 pages

1. -Sazlana Raheem
(4th year)

2. The shaping of an impression material by the
manipulation or action of the tissues adjacent to
the border of impression
OBJECTIVE:
To determine the contour, height & width of the borders of
the completed denture.

3. 1. Green stick impression compound
2. Elastomeric impression material
3. Impression Waxes
4. Silicon material
(Polyether)

4.  Special tray
 Bunsen burner
 Warm water
 Cold water
 Scalpel
 Gloves
 Mask
 Syringe(in case of polyether)
 Adhesive material in case of polyether

5. There are 2 techniques of border moulding :
1. Sectional/Incremental border moulding: done by Green stick IC
2. Single step/Simultaneous border moulding: done by Polyether(cmnly used)
Silicon
material

6. o At first the flange of custom tray should be reduced until they are 2mm short of
the reflection.
o Green stick compound is softened over flame till it begins to droop
o Add softened green stick compound along the portion of
the tray when the border is intended to be refined.
o The material should be tempered with warm water before
placing intraorally.

7. o The labial vestibule is refined first followed by buccal
vestibule & pps & functional movement carried out in this
area.
o After border moulding the moulded section is immersed in
cold water.
o Evaluate the retention & stability of border moulded tray.
Functional movements:
(In Maxilla):
 Labial flange:-
a) Active movement: patient is asked to do grimace, smile,
b) Passive movement: outward, downward & inward.
Open wide.

8.  Buccal flange:-
1. Buccal frenum area: performed unilaterally
2. Distobuccal area: This should be performed bilaterally.
a) Active: Patient is asked to pucker the lip and smile.
b) Passive: cheek is elevated & pulled outward, downward
& inward & move backward & forward.
a) Active: Patient is asked to open wide, close & move the mandible
from side to side.
b) Passive: The cheek is pulled outward, downward & inward.

9.  Posterior lateral hamular notch:-
Posterior Vibrating line:-
Active & Passive: move the mandible right & left &
opening the mouth wide & closes against hand on chin.
Active movement: observe line when patient saying ‘ah’ and record this line or
area & we can butterfly shape border seal at the junction of hard & soft palate.
Sequence of border moulding maxilla a) labial flange b) buccal flange
c) Distobuccal flange d) posterior palatal seal area.

10. In Mandible:-
 Labial flange:-
 Buccal flange:-
a) Active : patient is asked to do movement of lips-
puckers, sneers, open wide, grimaces, smile.
b) Passive movement: outward, upward, inward.
1. Buccal frenum area: Can be performed unilaterally
2. Distobuccal area: performed bilaterally
a) Active: pt. is asked o pucker & smile
b) Passive: The cheek is lifted outward, upward, inward &
move back & forward.
Passive: The cheek is pulled buccally to ensure it is not engaged in
tray & the moved upward and inward.

11.  Massetric notch:-
 Retromolar pad:-
 Retromylohyoid fossa:-
 Lingual flange:-
Active movement: the pt. closes against the hand on the chin.
Active movement: pt. is asked to wide open & close against the hand on the chin.
Active movement: push compound on fossa area, the pt. is asked to lick the lower
lip & right and left cheek & swallow.
1. Anterior Lingual flange:-
2. Middle portion of the lingual flange: performed bilaterally.
Active: pt. is asked to protrude the tongue & pushed the tongue against
anterior part of palate.

12. Active: pt. is asked to protrude the tongue & tip of the tongue touches
alternatively the right and left cheek.
3 . Distolingual flange: performed bilaterally
Active: pt. is asked to protrude the tongue & then
place the tongue in distal part of the palate & pt. is also
asked to close and open the mouth.
Sequence of border moulding mandible a) labial flange b) buccal flange c) distobuccal area including
messeteric notch d) anterior lingual flange e) middle portion of lingual flange
d) disto lingual flange

13. Procedure
Simultaneous Method
An adhesive is applied on the outer surface & inner border of the tray & inner
border of the tray.
The wax spacer along the periphery of the tray is scrapped off
Polyether impression material is mixed using less amount of catalyst to increase
the working time.
The mix is then loaded in the syringe.
The material is syringed along the border of the tray & contoured using wet
finger.
The pt. should be seated in upright position & the lips & cheeks are retracted &
the tray is placed on the mouth.
Deficiencies in the vestibule can be filled using excess material from other area
Then passive movement in maxilla & mandible should be carried out

14. After the border moulding when polyether impression material sets then the tray
is removed.
The border are examined for deficiencies & over extension.
Verification
 Border should be rounded & shining except posterior palatal seal area.
 Posterior palatal seal area should be matted.
 If border of the tray shows, it indicates under extension.
 If the tray protrude through the material it indicates over extension.