Cleft Lip and Palate

Question 1

A Cleft is a ____________

Answer 1

Abnormal opening in an anatomical structure that represents a failure of structures to seal in embryonic development

Question 1

A typically developing fetus would have a complete fusion of the mandible, frontonas, and maxillary process from ____-_____ weeks gestation

Answer 1

3-8 weeks of gestation

Question 2

The development of the Hard and Soft Palate are typical of ___-____ weeks gestation

Answer 2

8th -12th (Early fetal period)

Question 3

Complete Closure of the hard palate is typical in ____ weeks gestation

Answer 3

9 weeks

Question 4

The development of the two palates are ________

Answer 4

Independent

Question 5

Primary Palate closure: ____ weeks

Secondary Palate closure:_______ weeks

Answer 5

The lip (primary) -7 weeks

The palate (secondary) - 9 weeks

Question 6

The Nasal and Oral cavities are separated by the complete fuse of the _______ and _______ palate between ___-____ weeks gestation (Early Fetal Period)

Answer 6

The complete fuse of the hard and soft palate separates the oral and nasal cavities at 8-12 weeks gestation

Question 7

Which seals first? the Hard palate or the soft palate?

Answer 7

Hard palate (9weeks) followed by the soft palate (10 weeks)

Question 8

Complete sealing of the palates followed by the final development of the soft palate is at _____ weeks gestation

Answer 8

12 weeks

Question 9

Cleft Lip and Palate occur ~ 1 in every _____ births

Answer 9

750

Question 10

Cleft palate occurs ~ 1/___ births

Answer 10

1/750

Question 11

Cleft of the ____ is more common than cleft of the ______

Answer 11

Lip is more common than palate

Question 12

What are the three main types of Cleft Lip

Answer 12

Bilateral (most severe)
Incomplete
Complete (lip travels into the nostril, most common on the left side)

Question 13

Bilateral Complete Cleft Lip and Palate characteristics:

Answer 13

• Most severe due to a large lack of tissue for reconstruction
• The lip and alveolus are cleft and into both nostrils
• Tip of the nose may be directly attached to the lip

Question 14

Characteristics of submucous cleft:

Answer 14

• Muscular cleft of the soft palate
• Cleft is covered by a thin layer of mucosal tissue of mucosal tissue
• May not be discovered later in life or ever
• Bluish tint to the middle of the soft palate

Question 15

Pharyngeal Fricatives are used to substitute for ________ and sometimes __________

Answer 15

Fricatives (z,sh,s)
and sometimes Affricates (ch in chair, or j in juice)