Immediate Dentures Flashcards
Preferred approach of ICD at the COD
Double phase surgical schedule
*posteriors removed first to allow ridge to heal and stabilize while still having esthetic anteriors
of weeks for healing that is considered ideal?
12 weeks
3 keys to a quality final impression
- Get a good primary impression
- Make a quality custom tray
- Make space for impression material during border moulding
What makes a good custom tray?
1-2 mm of clearance for border moulding material and tray must be smooth round and 2mm thick
How many layers of baseplate wax to maintain space for impression material during border moulding?
2 layers
What is the key to a successful impression?
The borders
What is a prerequisite to successful impression taking by the practitioner?
knowing which structures and muscles make the borders and how to activate these muscles
4 key actions for good maxillary impression
- Ask patient to make suction around finger/tray handle
- Suction around finger again (pucker) and create maximum smile line
- open their mouth wide and then move their mandible side to side to stretch the pterygomandibular raphe and allow the coronoid processes to shape the impression
- Find area between hard/soft palate and vibrating line
How do you mark hard/soft palate?
Pinch patient nostrils and tell them to blow out their nose while keeping tongue pushed down
How to mark vibrating line?
Have pt say “ah” or cough
5 actions to create good mandibular impression
- Suction on finger
- Pucker than maximum smile line
- Say “christmas” and letters “Q” and “U” and pull lip superiorly over impression tray
- Have pt close against resistance in 1sec intervals
- Raise tongue to roof of mouth, vermillion border, commissure of lips
degree of lip support
90-115 degrees
depth of posterior palatal seal?
1-1.5mm
3 methods of recording CR
- Bilat manipulation
- chin point
- anterior deprogramming
How much do you trim teeth off casts for ICDs?
Under normal perio= rule of thirds
under bad perio= probe depth+ rule of thirds
