Ortho And Restorative Flashcards
What dental anomalies are associated with hypodontia?
Ectopic teeth
Microdontia
Delayed eruption
Taurodontism
What is hypodontia ?
When one or more permanent teeth are congenially absent
How delayed are teeth in erupting in people suffering from hypodontia?
They are generally 1.5yrs delayed plus or minus 1.4 yrs and this is worse for the teeth that are adjacent to the site of agenesis
What are the causes of hypodontia ?
Mutlifactorial
Familial link
Gene interaction with environment
T/F hypodontia is likely to be polygenic?
T
What are the orthodontic management options for people with hypodontia?
Space closure
Create ideal space
What are the restorative treatment options for hypodontics?
Removable
Fixed : bridge implant transplant
What factors would make you open or close a space?
Colour of the teeth to be used in the space
Shape of the teeth to be used in the soace
What feature of the roots do you need to consider when placing implants to restore a missing tooth?
Root parallelism
What is the size of an upper lateral compared to an upper central?
67-75% of the width
Upper laterals are 6-6.7mm
What happens during space closure using NiTi wires? How can this be avoided?
Space closes using NiTi wires and this causes
- Buccal segments move forward
- Lower labial segment retroclines
Miniscrews can be used which enables cortical bone to be engaged allowing traction therefore avoids the problems created by using NiTi wires
How can vertical space created?
Levelling and aligning
How can you control tooth wear with ortho?
- Establish aetiology and control
- Re establish vertical dimensions using ortho and restorative
- Restore aesthetics
- Monitor
What are the options for establishing the vertical dimensions using ortho?
Using an URA with anterior bite plane
Fixed appliances
What are the options for establishing the vertical dimensions using restorations?
Dahl appliances
