Cleft Lip And Palate Flashcards
Define CLP
Craniofacial malformation which occurs @ dentofacial development
How many births occur with a Cleft Palate?
1 per 750
How many births occur with a cleft lip?
1 in 1000
CLP are more common…
Males
Left Side
What is the percentage of occurring if CLP is present in the family?
40%
What is the percentage of CLP occurring with no family history?
1 in 20 chance
At how many weeks IUL does the palate form?
8th week
9th/10th week preg
Developmentally, how does a CLP form?
Within the Horizontal Palatal Process when the tongue doesn’t lower and the 2 shelves dont join at the midline
What is the aetiology of CLP?
- Genetic
- Environmental
- Syndromes
What are the environmental factors that can cause CLP?
• Alcohol/ Drugs- Heroin
• Bad diet
• Anticonvulsant Drugs (epilepsy and pain relief)
• Steroids
• Vit A and Folic Acid deficiency
What syndromes are linked to CLP
- Downes
- Pierre Robin
- Treacher Collins
- Klippel Feil
List the three types of CLP
• Cleft Lip
• Cleft Lip and Palate
• Cleft Palate
What part of the palate is involved in a Cleft Lip?
• Lip
• Alveolus
• Primary palate
What part of the palate is involved in cleft lip and palate?
Primary and secondary
What part of the palate is involved with just a cleft palate?
Secondary Palate
What is the primary palate?
The pre maxilla
Incisive foramen
Hard Palate
What is the secondary palate?
Soft
Uvula to the incisive foramen
What classification are used for CLP?
Unilateral/ bilateral
Complete/ incomplete
What does unilateral mean?
One side
What does bilateral mean?
Two sides
What does incomplete mean?
Secondary palate only
What does complete mean?
Primary and secondary palate
What is a submucous cleft?
• secondary palate
• cleft underneath the mucosa
• hard to detect
• can be detected by a bifid uvula
What are the clinical problems with CLP?
- Hearing
- Feeding
- Speech
What are implications of CLP?
• Hypondontia. • Narrow arch
• supernumeraries. • class III
• Microdontia
• Canine impaction
• 6 Impaction
• Enamel hypoplasia
• ant/post crossbites
Team involved in CLP?
MULTIDISCIPLINARY
• ortho and dental
•maxilliofacial
• plastic surgeon
• ent specialist
• health visitor
• speech visitor
• pyschologist
At how many weeks is a scan which detects clp?
20 week scan
What surgery is done first?
Lip feeding
To help with feeding
6-12 weeks
When is the palate repaired?
6-12 months
When is nasal surgery done?
4/5 years
School age and speech therapy
At what age does a bone graft occur?
8 years old ready for canine eruption and ortho trt
What ortho trt is likely to happen?
Maxillary expansion
