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Table 5 Type of substitutions identified in individuals with different types of occlusion in Treacher Collins syndrome (n = 19)

From: Associations between speech features and phenotypic severity in Treacher Collins syndrome

 

Increased overjet

Reverse overjet

Anterior and lateral open bite

No malocclusion

Number of individuals

 

(n = 5)

(n = 2)

(n = 2)

(n = 10)

(n = 19)

Anterior oral substitutions

4

1

2

2

8

Bilabial articulation

2

0

1

1

4

Labiodental articulation

1

0

0

0

1

Interdental articulation

1

0

1

0

2

Lateral /s/

4

1

0

2

7

Posterior oral substitutions

2

1

1

2

6

Palatal articulation

0

0

0

1

1

Retracted to velar

0

0

1

0

2

Retracted to uvular

2

1

0

1

4

Double articulation

1

0

0

0

1

No articulation errors

1

1

0

6

8