Cleft Lip And Palate

Question 1

Define CLP

Answer 1

Craniofacial malformation which occurs @ dentofacial development

Question 2

How many births occur with a Cleft Palate?

Answer 2

1 per 750

Question 3

How many births occur with a cleft lip?

Answer 3

1 in 1000

Question 4

CLP are more common…

Answer 4

Males
Left Side

Question 5

What is the percentage of occurring if CLP is present in the family?

Answer 5

40%

Question 6

What is the percentage of CLP occurring with no family history?

Answer 6

1 in 20 chance

Question 7

At how many weeks IUL does the palate form?

Answer 7

8th week
9th/10th week preg

Question 8

Developmentally, how does a CLP form?

Answer 8

Within the Horizontal Palatal Process when the tongue doesn’t lower and the 2 shelves dont join at the midline

Question 9

What is the aetiology of CLP?

Answer 9

1. Genetic
2. Environmental
3. Syndromes

Question 10

What are the environmental factors that can cause CLP?

Answer 10

• Alcohol/ Drugs- Heroin
• Bad diet
• Anticonvulsant Drugs (epilepsy and pain relief)
• Steroids
• Vit A and Folic Acid deficiency

Question 11

What syndromes are linked to CLP

Answer 11

1. Downes
2. Pierre Robin
3. Treacher Collins
4. Klippel Feil

Question 12

List the three types of CLP

Answer 12

• Cleft Lip
• Cleft Lip and Palate
• Cleft Palate

Question 13

What part of the palate is involved in a Cleft Lip?

Answer 13

• Lip
• Alveolus
• Primary palate

Question 14

What part of the palate is involved in cleft lip and palate?

Answer 14

Primary and secondary

Question 15

What part of the palate is involved with just a cleft palate?

Answer 15

Secondary Palate

Question 16

What is the primary palate?

Answer 16

The pre maxilla
Incisive foramen
Hard Palate

Question 17

What is the secondary palate?

Answer 17

Soft
Uvula to the incisive foramen

Question 18

What classification are used for CLP?

Answer 18

Unilateral/ bilateral
Complete/ incomplete

Question 19

What does unilateral mean?

Answer 19

One side

Question 20

What does bilateral mean?

Answer 20

Two sides

Question 21

What does incomplete mean?

Answer 21

Secondary palate only

Question 22

What does complete mean?

Answer 22

Primary and secondary palate

Question 23

What is a submucous cleft?

Answer 23

• secondary palate
• cleft underneath the mucosa
• hard to detect
• can be detected by a bifid uvula

Question 24

What are the clinical problems with CLP?

Answer 24

1. Hearing
2. Feeding
3. Speech

Question 25

What are implications of CLP?

Answer 25

• Hypondontia. • Narrow arch
• supernumeraries. • class III
• Microdontia
• Canine impaction
• 6 Impaction
• Enamel hypoplasia
• ant/post crossbites

Question 26

Team involved in CLP?

Answer 26

MULTIDISCIPLINARY
• ortho and dental
•maxilliofacial
• plastic surgeon
• ent specialist
• health visitor
• speech visitor
• pyschologist

Question 27

At how many weeks is a scan which detects clp?

Answer 27

20 week scan

Question 28

What surgery is done first?

Answer 28

Lip feeding
To help with feeding
6-12 weeks

Question 29

When is the palate repaired?

Answer 29

6-12 months

Question 30

When is nasal surgery done?

Answer 30

4/5 years
School age and speech therapy

Question 31

At what age does a bone graft occur?

Answer 31

8 years old ready for canine eruption and ortho trt

Question 32

What ortho trt is likely to happen?

Answer 32

Maxillary expansion