DEVELOPMENT OF DENTITION AND OCCLUSION

Leeway space is best described as the

• Physiological spacing present in the deciduous arches

• Space created by the labial inclination of permanent incisors

• Size difference between the combined width of deciduous canines and molars, and their permanent successors

• Increase in intercanine width during the eruption of permanent incisors

Early mesial shift of permanent molars utilizes which of the following spaces?

• Leeway space

• Primate spaces

• Interdental spacing

• E-space

Incisal liability refers to the:

• Increased risk of trauma to erupting permanent incisors

• Difference in size between primary and permanent incisors, with permanent incisors being larger

• Tendency for permanent incisors to erupt lingually

• Increased spacing between permanent incisors compared to primary incisors

A flush terminal plane in the primary dentition typically results in which molar relationship in the early permanent dentition?

• Class II molar relation

• Class III molar relation

• End-on molar relationship

• Definite Class I molar relation

Natal teeth are defined as teeth that are present

• Within the first 30 days after birth

• Between 6 months and 6 years of age

• At the age of approximately 8-9 years

• At birth

Self-correcting anomalies in dental development are characterised by their ability to

• Require extensive orthodontic intervention

• Persist into the permanent dentition without treatment

• Resolve spontaneously without orthodontic intervention

• Be primarily caused by genetic factors

E-space is

• Physiological spacing commonly found in the anterior primary dentition.

• Space created by the forward movement of permanent first molars

• Size difference between the second primary molar (E) and the second premolar

• Additional space gained due to the increase in intercanine width.

Which of the following is a primary clinical characteristic of the ugly duckling stage?

• Severe crowding of the mandibular anterior teeth

• A persistent anterior open bite.

• Flaring and spacing of the maxillary incisors, often with a midline diastema

• A deep overbite that requires early orthodontic intervention

Which of the following is NOT typically considered a self-correcting anomaly of the primary dentition?

• Physiologic spacing

• Flaring of upper Incisor with Midline Diastema

• Shallow overjet

• Anterior Crossbite

Late mesial shift occurs due to the utilization of

• Simian space

• Leeway Space

• Both of the above

• None of the above