ortho Flashcards
Which teeth are most common to be congenitally missing (excluding 8s)?
Lower Second Premolars (5s)
What is the last facial bone to complete growing?
Mandible
Which cephalometric angle is representative of the AP patients skeletal pattern?
ANB
What is the Eastman correction in a pt whose SNA = 85º, ANB = 4º and SN-MP = 12º?
4º
What is the most common aetiology of retroinclined upper incisors in a Class 2 Div 2 malocclusion?
High Lower Lip Line
What is the most likely cause of palatally erupting upper 5s?
Space Loss
What is the normal developing molar relationship in the mixed dentition?
1/2 class 2
What is the most likely cause of a midline diastema in a child aged 8?
Normal dental development.
What is the most likely reason for interceptive orthodontic treatment for a child with an anterior crossbite with a premature contact and mandibular displacement?
Potential gingival recession of the lower incisor associated with premature contact.
In which circumstances would an adult qualify for NHS ortho treatment in a specialist practice?
They will have been referred as a child and are still on the waiting list at 18 with an IOTN 4D.
Describe and Anterior Open Bite
When the posterior teeth tough first, propping the anteriors open.
What are the 2 components of the IOTN system to determine need for orthodontic treatment?
- Dental Health Component
- Aesthetic Component
What grade on both the Dental Health and Aesthetic Component does a pt have to be to be considered for treatment?
3-5 on DH
6-10 on aesthetic
Typical Problem List for Ortho Pts
- OH, caries
- skeletal 2
- over 6mm overjet
- increased overbite
- crowding
What is the acronym used when assessing the greater IOTN need?
MOCDO
M issing / impacted
O verjet
C rossbite +/- displacement of jaw
D isplacement of contact points (crossbite)
O verbite
