• Tooth Eruption ⇒ Movement of the tooth in the oral cavity from its development position to its functional position.
• Human beings are Diphyodonts (2 sets of dentition)

Theories of tooth eruption

Bone remodeling theory

Root formation theory

Vascular pressure theory

PDL ligament theory

Physiology of tooth movement

Anomalies of tooth eruption

MCQS

1. Beginning of eruption of permanent teeth starts

a) After completion of root
b) When apical third root is still to be formed
c) When half of the root is still to be formed
d) When root formation starts

Answer: C

2. In majority of situations, the first deciduous tooth to erupt is the:

a) Mandibular central incisors
b) Mandibular first molar
c) Maxillary central incisors
d) Maxillary 2nd molar

Answer: A

Explanation: Mandibular central incisors erupts approximately 6 months of age.

3. Primary canine erupts

a) After D
b) Before B
c) After B
d) After E

Answer: A

4. The eruption are of maxillary permanent lateral incisor is

a) 8-9 yrs.
b) 6-7 yrs.
c) 10-11 yrs.
d) 8-9 months

Answer: A