National Dental Assisting Examining Board (NDAEB) Practice Exam

What is the process called when a tooth comes into the oral cavity and maintains occlusion?

1. Retention

2. Eruption

3. Exfoliation

4. Calcification

The correct answer is: Eruption

The process when a tooth comes into the oral cavity and maintains occlusion is referred to as eruption. Eruption involves the movement of the tooth from its developmental position within the jaw to its functional position in the mouth. This process is crucial for the development of the occlusion, which is the alignment and contact between the upper and lower teeth. During eruption, various physiological mechanisms are at work, including the resorption of the underlying bone and the movement of the tooth through the gums. This process ensures that the tooth is positioned correctly to engage with its opposing teeth, allowing for effective chewing and overall oral function. Eruption typically begins with primary teeth in infancy and continues with the emergence of permanent teeth during childhood and adolescence. Understanding this process is vital for dental professionals as it informs their approach to patient care and management of dental growth and development issues.