1
Q
Define reline.
A
Adding new base material to the tissue surface of an existing denture in quantity sufficient to fill the space between the original denture contour and the alerted tissue contour
2
Q
Define rebase.
A
Removing the original base and replacing the entire denture base material (ie leave a horse shoe of acrylic with teeth)
3
Q
What are the different types of reline?
A
- temporary
- soft
- permanent
4
Q
When is a temporary reline indicated?
A
- tissue conditioning when grossly ill fitting dentures
- post imediate dentures
- after implant surgery
5
Q
When is a soft reline indicated?
A
- parafunctional habits
- atrophic ridges
- obturator in cancer/cleft patients
6
Q
What are the disadvantages of a soft reline?
A
- plasticiser leaches out over time, toughens
- deteriorate over time
- harbour microorganisms
7
Q
What material can be used for soft relines?
A
- heat cured acrylic
- self cured acrylic
- heat cured silicones
- self cured silicones
8
Q
When is a permanent reline indicated?
A
- correction of error following inadequate master impression
- immediate or post-immediate dentures
- prolongs lifespan of older dentures
- inadequate peripheral seal
9
Q
What material can be used for permanent relines?
A
Hard acrylic
10
Q
What are the clinical stages of a rebase?
A
- remove undercuts from denture
- wash impression with closed mouth technique
- lab rebase denture
