Blank Quiz

Which type of radiograph is used to determine facial asymmetry?

• a- Lateral cephalometric radiograph
• b- Panoramic radiograph
• c- Occlusal and bite-wing radiograph
• d- Postero-anterior radiograph

In normal facial proportions:

• a- Upper lip height = ¼ LAFH
• b- UAFH = MAFH = LAFH
• c- Width of the non-relaxed mouth = interlimbus width
• d- All of the above

The panoramic radiograph is used to determine the maxillo-mandibular relationship in the anteroposterior direction.

• a- True
• b- False

What information is not obtained from a lateral cephalometric radiograph?

• Sagittal jaw relationship
• vertical jaw relationship
• Incisor inclination
• Facial asymmetry

Diagnosis in orthodontics implies

• The determination of abnormality
• b- The gathering of data
• c- The grouping of similar cases
• d- Taking full mouth radiographs

Examination in orthodontics implies:

• a- The determination of abnormality
• b- The gathering of data
• c- The grouping of similar cases
• d- Taking full mouth radiographs
• e- None of the above

Which of the following statements about the hand wrist radiographs is incorrect:

• a- It helps not only in assessing the growth of an individual but also helps to predict future skeletal maturation rate and status
• b- It is based upon the fact that the numerous small bones of hand, like carpals,metacarpals, etc show a predictable and scheduled pattern of appearance, ossification and union from birth to maturity
• c- It gives us a general idea regarding the amount and direction of growth
• d- It helps in determination of skeletal maturity status prior to treatment of skeletal malocclusion such as skeletal class II or skeletal class III maloclusion

The mandibular plane angle could be:

• a- Slightly downward and forward
• b- Mainly downward
• c- Mainly forward
• d- All of the above

In orthodontic study models the bases of the maxillary and the mandibular casts are:

• a- Parallel to each other
• b- At 90° to each other
• c- At 30° to each other
• d- At 110° to each other

Class I malocclusions share what basic characteristic:

• The midface is concave
• b- A harmonious skeletal profile
• c- The midface is convex
• d- None of the above