Seminar 1

Question 1

What special investigations are used in ortho?

Answer 1

1. Radiographs
2. Study models
3. Photos and facial profile aesthetics
4. Cone Beam CT
5. Sensibility tests
6. Planning models

Question 2

Why do we use alginates for study models?

Answer 2

1. Baseline record
2. Facilitate communication
3. Facilitate assessment and diagnosis

Question 3

What do you need to find out about MH?

Answer 3

1. Is the patient fit and well

2. Any allergies eg nickel which is found in SS brackets and arch wire

Question 4

Why is a history of Trauma important?

Answer 4

Increased risk of root resorption.

Follow up with a Trauma stamp

Question 5

How do we assess A-P class?

Answer 5

1. Visually assess Antero-Posterior class with FP parallel to the floor.
2. Palpate skeletal bases
3. Lateral Ceph

Question 6

What is AP Class I?

Answer 6

when the maxilla is 2-3mm anterior to the mandible

Question 7

How do we assess the vertical skeletal pattern?

Answer 7

By looking at the FMPA

Question 8

What is a Low FMPA?

Answer 8

When it meets much further away than the back of the head

Question 9

What should the LAFH be?

Answer 9

50: 50 clinically
55: 45 in a Ceph

Question 10

What important facts about a pts DH is important for Ortho assessment?

Answer 10

1. regular attender

2. previous treatment

Question 11

How do we assess the Transverse Skeletal Pattern?

Answer 11

View from FRONT and ABOVE

Question 12

What should the average Naso-Labial Angle be?

Answer 12

100deg

Question 13

What is moderate crowding?

Answer 13

4-8mm

Question 14

How do we measure the degree of crowding?

Answer 14

1. Space available / space required
2. Overlap technique
3. Mixed dentition analysis

Question 15

How much space does a lower canine need?

Answer 15

7mm

Question 16

How much space does an upper canine need?

Answer 16

8mm

Question 17

What teeth are approx. 7mm?

Answer 17

All the pre-molars and the lower canines

Question 18

Key features of Class II div 1?

Answer 18

1. Lower incisor edges lie posterior to the cingulum plateau of the upper central incisors
2. Increased overjet

Question 19

Key features of Class II div 2?

Answer 19

1. Lower incisor edges lie posterior to the cingulum plateau of the upper central incisors
2. Upper central incisors are retroclined

Question 20

Key features of Class III?

Answer 20

1. Lower incisor edges lie anterior to the cingulum plateau of the upper central incisors
2. Overjet is reduced or reversed

Question 21

In Class I canine relationship, where should the upper canine occlude?

Answer 21

Between the Lower canine and lower pre-molar

Question 22

In Class I molar relationship, where should the upper 1st molar occlude?

Answer 22

Upper 1st molar MB cusp should occlude between the MB and DB cusp of lower 1st molar

Question 23

What skeletal class would you use a function appliance?

Answer 23

Class 2 div 1

Question 24

What are the types of supernumerary teeth?

Answer 24

Conical
tuberculate
supplemental
odontome

Question 25

Where are ectopic canines usually found?

Answer 25

95% palatal

Question 26

What is the most common reason for a central to not erupt?

Answer 26

tuberculate supernumerary