Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

BDS3 Lawrence > Ortho - Examination > Flashcards

Ortho - Examination Flashcards

1
Q

When are orthodontic assessment routinely carried out?

A

When the patients approximately 9 years old for an initial assessment.
Then when the patient has all of their permanent teeth for a more comprehensive examination (11-12 years)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When taking a patient history, what kind of questions would you ask to gauge there motivation to having braces?

A

What don’t you like about your teeth? give a list.

Guage if they are motivated for braces (better prognosis) Do you want braces?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Possible contraindications to ortho?

A 
There isn't very many.
Poor OH and diet 
Past trauma 
Allergy to Ni or latex (but not really a factor anymore)
Epilepsy 
Drugs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Questions relating to dental history?

A

Have you experienced trauma? (risk of root resorption)
Guage their attendance to the dentist, OH levels and caries risk.
Past treatments are were the co-operative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Social history?

A

Is the practice easily accessed
public transport
Do Mum and dad work? can they get you to appointments?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

List some possible bad habits which might be of note?

A

Thumb sucking
Biting of nails (root resorption of UI)
Tongue thrust

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the main areas of consideration for an E/O in ortho?

A

Skeletal bases
Soft tissues
TMJ
(Look at the parent as can be an indication of how the children will develop and grow)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the main cause of a class ll div l

A

In 80% of cases. The mandible isn’t smaller It is just placed further back in the skull.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

There are 3 planes that are examined in relation to the facial skeletal pattern. What are they?

A

Anterior posterior dimension
Vertical dimension
Transverse/lateral dimension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Before running any facial skeletal assessment what must the Frankfort plane be?

A

Horizontal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the Frankfort plane?

A

It is a line that runs from the superior border of the external auditory meatus to the inferior border of the orbit.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The AP skeletal assessment can be classed by what?

A

The gap between the maxilla and the mandible.
Class l - 2-3mm
class ll - more than 3mm
class lll - less than 2-3mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

In growing children how is a class ll fixed to bring the mandible forward?

A

A functional appliance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the FMPA?

A

This is where the Frankfort plane meets the mandibular plane. (runs along the border of the mandible).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

In a class l relationship, what is the value of FMPA?

A

25 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are some reasons for the FMPA increasing?

A

This can be due to a reduced overbite or an anterior open bite.
This causes the mandible to become more vertically angled, increasing the FMPA.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is a possible reason for a decrease in the FMPA?

A

The patient has a very deep bite.

Causing the mandible to be more horizontal.

18
Q

Name two ways in which you can assess the vertical skeletal relationship?

A

Anterior face height ratio

FMPA

19
Q

The transverse skeletal relationship is looked at how?

A

Look at the patient front on, down the mid-sagittal reference line.

20
Q

What is included in an E/O soft tissues assessment?

A

Lips
Tongue
Habits - thumb sucking etc
Speech

21
Q

What are lips classified by?

A

Competent (lips meet naturally at rest)

In-competent (lip don’t meet at rest)

22
Q

What can happen with in-competent lips?

A

A lip trap can occur where the upper incisors rest on the lower lips and can cause them to be pro-clined.

23
Q

What can hyperactive lower lips cause

A

Lower incisors become retroclined

24
Q

What can tongue thrusting when swallowing cause?

A

Anterior open bite

25
Q

What assessments of habits are relevant to ortho?

A

Thumb and digit sucking

26
Q

What can thumb and digit sucking cause in the mouth?

A

Thumb sucking can cause the uppers to be proclined and lowers retroclined.
It can also cause the upper jaw to be smaller as the tongue isn’t there to prevent the check and other soft tissues from putting external force on the upper arch. Causing a unilateral posterior crossbite. Which affects occlusion.
Localised AOB with finger sucking

27
Q

WIth speech what can happen?

A

Lisping can occur and the tongue causes spacing and anterior open bite

28
Q

Brief TMJ assessment.

A 
Path of closure 
Range of movement 
Tenderness of muscle 
Pain or clicking from joint 
Deviation on opening 
mandibular displacement
29
Q

RCP stands for

A

Retruded contact position

This is the first contact before ICP

30
Q

if the patients RCP is the same as the ICP what does this mean?

A

That there is problems with the patients bite which can severely impact the TMJ and must be treated

31
Q

What is included in the I/O

A 
Teeth present 
Oral hygiene and periodontal health
Quality of teeth 
Assess crowding spacing and rotation 
Inclination and angulation of teeth 
Palpate for canines if not erupted
Not abnormal sized teeth (peg laterals)
32
Q

From what age do you palpate looking for canines and what are you looking for?

A

9 years of age

Ectopic canines

33
Q

Can you continue ortho if patients have bad OH, caries or periodontal disease

A

No

As will further decalcification

34
Q

What are the 3 main risks of ortho treatment?

A

Decalcification
Relapse
Root resorption

35
Q

What should a normal overbite be %?

A

33-50%

36
Q

Angles classification of molar buccal segments?

A 
Class l - the mesiobuccal cusp of U6 occludes with the mesial buccal groove of the lower 6.
class ll - the lower 6 now occludes further back in mouth
class lll - the lower 6 occludes more mesial in the mouth
37
Q

Canine relationship?

A

Class l - the upper 3 mesial slope occludes with the lower 3 distal slope.
class ll - lower 3’s move distally
Class lll - lower 3’s move mesially

38
Q

What is more important in achieving the perfect canine or molar relationship, and why?

A

Canine
As if the canines are in the right place then the incisors will move into right place also and this is the aesthetic zone

39
Q

Special investigations in ortho?

A 
Radiographs 
- Lateral Cephs 
- OPT
- Maxillary anterior occlusal 
Scanning
Study models 
Photographs
40
Q

What is the score used to assess treatment

A

IOTN

BDS3 Lawrence (39 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions