Quiz on Oral Physiology and Occlusion

What is the main goal of orthodontic therapy?

• To produce a well balanced functional occlusion

• To reduce dental anxiety

• To create a balanced smile

• To enhance dental aesthetics

What does balanced occlusion refer to?

• The bilateral, simultaneous contact of teeth in various positions

• The alignment of teeth in a straight line

• The aesthetic appearance of a smile

• The height of the upper lip

Which component is NOT part of the eight major components of a smile?

• Smile symmetry

• Lip line

• Tooth decay

• Gingival components

What is considered an optimal lip line?

• When there is no display of teeth

• When the lower lip is higher than the upper lip

• When the upper lip is below the maxillary incisors

• When the upper lip reaches the gingival margin

What is the average height of the maxillary central incisors for males?

• 9.8mm

• 10.6mm

• 11.5mm

• 10.0mm

What does the smile arc refer to?

• The curvature of the upper lip

• The relationship between the maxillary anterior teeth and the lower lip

• The height of the upper lip

• The distance between the canines

What can cause a transverse cant in the frontal occlusal plane?

• High lip line

• Increased lip length

• Differential eruption of teeth

• Symmetrical smile

What does lateral negative space refer to?

• The height of the gingiva

• The space between the upper and lower teeth

• The buccal corridor in smiling

• The distance between the incisors

What is a common cause of smile asymmetry?

• Excessive tooth whitening

• Deficiency of muscle tonus on one side of the face

• Increased gingival exposure

• High lip line

Which of the following is NOT a dental component?

• Size of the teeth

• Color of the teeth

• Height of the upper lip

• Alignment of the teeth