BDS4 hypodontia Flashcards
1
Q
what does anodontia mean?
A
Complete absence of teeth
2
Q
what is severe hypodontia mean?
A
6 or more congenitally absent teeth
3
Q
what is hypodontia associated with and what does most cases have?
A
- Associated with ectopic canines
- Most hypodontia cases will have missing U2’s
4
Q
what are biggest syndromes to have hypodontia
A
- cleft lip palate
- downs
- ectodermal dysplasia
5
Q
who presents with hypodontia?
A
- Delayed or asymmetric eruption
- Retained or infra-occluded deciduous teeth
- Absent deciduous tooth
- Tooth form
6
Q
what are 5 associated problems of hypodontia?
A
- Microdontia
- Impaction
- Enamel hypoplasia
- Crowding
- delayed eruption other teeth
7
Q
what are potential problems of hypodontia?
A
- Spacing
- Drifting
- Over-eruption
- Aesthetic impairment
- Functional problems
8
Q
what are hypodontia investigations?
A
- Study Models
- Planning models - diag
- Radiographs
- Photographs
- Conebeam CT
9
Q
what are options for management of hypodontia?
A
- Accept
- Restorative alone
- Orthodontics alone
- Combined orthodontic & restorative treatment
10
Q
what are 3 main choices for filling space of hypo?
A
- RBB
- implant
- Partial denture
also
*auto transplantation
*conventional bridge
11
Q
advantages of RBB for hypo?
A
- Relatively simple
- Do when young (complete treatment)
- Non-destructive
- Can look good
- Place on semi-permanent basis
12
Q
disadvantages of RBB for hypo?
A
- Failure rate
- Appearance sometimes not good
- Orthodontic retention needs are high
13
Q
explain important features of implants for hypo?
A
- need to be 21 for growth to stop
- need 7mm space minimum
- root separation
- often need bone graft
- very challenging technically
- significant time to do
- expensive cost
14
Q
advantages of space closure?
A
- No prosthesis - low maintenance
- Good aesthetics with appropriate orthodontic and restorative techniques
- Can be done at an early age
