1. Dev Disturbances & Disorders affecting Hard tissues – Dr. Fathy Emad

Dev. Dis. Of Hard Tissues 1

1 / 10

A patient with the ability to approximate (bring together) their shoulders easily is likely suffering from:

Treacher Collins Syndrome

Cleidocranial Dysostosis

Down Syndrome

Crouzon Syndrome

2 / 10

Which of the following is NOT a feature of Crouzon Syndrome?

Beaked nose

Absence of clavicles

Premature fusion of cranial sutures

Wide-set, bulging eyes

3 / 10

Which intraoral manifestation is commonly associated with Crouzon Syndrome?

Hypoplastic enamel

Early eruption of teeth

Cleft palate and bifid uvula

Supernumerary teeth

4 / 10

Cleidocranial Dysostosis is caused by mutation in which gene?

CBFA1

FGFR2

RUNX2

P53

5 / 10

Wormian bones (extra small irregular skull bones) are typically found in:

Mandibulofacial Dysostosis

Amelogenesis imperfecta

Cleidocranial Dysostosis

Crouzon Syndrome

6 / 10

Supernumerary teeth and delayed eruption are typical features of:

Cleidocranial Dysostosis

Hypohidrotic Ectodermal Dysplasia

Crouzon Syndrome

Treacher Collins Syndrome

7 / 10

Developmental disturbances are best defined as:

Pathological conditions only caused by trauma

Normal variations of growth

Malformations or defects from disturbances of growth and development

Temporary changes in morphology

8 / 10

Which of the following is TRUE about Crouzon Syndrome?

It is non-genetic and idiopathic

It involves craniosynostosis leading to abnormal skull shape

It is always associated with mental retardation

It is caused by mutation in CBFA1 gene

9 / 10

Franceschetti syndrome is another name for:

Crouzon Syndrome

Ectodermal Dysplasia

Mandibulofacial Dysostosis

Cleidocranial Dysostosis

10 / 10

Which of the following is a congenital condition?

Present at birth

Always of unknown cause

Acquired after birth due to trauma

Runs in families due to shared lifestyle

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