Pediatric Dentistry: Eruption of Teeth Quiz

Origin of Pedodontics

• The term "Pedodontics" originates from the Greek words "paidos" meaning child and "odous" meaning tooth.

Focus of Pedodontics

• The primary focus of Pedodontics is the development, eruption, and maintenance of healthy teeth and surrounding oral tissues in children.

Factors Influencing Tooth Formation and Eruption

• Genetic, environmental, and hormonal factors can influence the formation and eruption of teeth.

Tooth Eruption Process

• The approximate time interval for a permanent tooth to move toward occlusion after crown completion is around 2-3 years.
• The process of movement of the tooth through the tissues of the jaw towards occlusion is known as tooth eruption.
• Tooth eruption is a complex process influenced by multiple factors, including genetic, environmental, and hormonal factors.

Pre-eruptive Tooth Movement

• The primary purpose of pre-eruptive tooth movement is to position the tooth germ in the correct location for eruption.

Axial Movement

• The axial movement of the tooth from its crypt within the bone of the jaw to its functional position in occlusion is called axial migration.

Theories of Tooth Eruption

• The hydraulic theory suggests that an increase in tissue fluid or blood pressure in the periapical region is sufficient to move the tooth.
• The eruption theory suggests that bone resorption and formation occur due to eruptive forces applied by the tooth over the bone.

Post-eruptive Tooth Movement

• The primary function of post-eruptive tooth movement is to adjust the tooth's position to achieve optimal occlusion.

Types of Tooth Movement

• Asymmetric movement occurs when one part of the tooth germ remains fixed while the rest continues to grow, causing a shift in the center of the tooth germ.
• Active movement causes bone resorption at the direction of tooth movement and bone apposition behind it.

Root Growth Theory

• According to the root growth theory, the root was suggested to transmit the force to cause eruption, but was never found histologically.

Fibroblasts and Tooth Eruption

• Fibroblasts have been considered a factor in tooth eruption due to their traction power.