What commonly causes over-retained primary teeth?

• A. Genetic factors
• B. Orthodontic treatment
• C. Traumatic injuries and infections
• D. Habits like thumb sucking

Answer: (C)

Over-retained primary teeth occur when these teeth do not exfoliate as expected and remain in the dental arch longer than normal. One of the common causes of this phenomenon is traumatic injuries and infections.

When primary teeth experience trauma, such as a fall or an accident, they can become damaged or their developmental processes may be disrupted. If the tooth is injured, it might not resorb and fall out as intended, leading to retention. Additionally, infections in the area surrounding the primary teeth, such as abscesses or periodontal disease, can interfere with the process of natural exfoliation. Infections can cause inflammation and disrupt the normal signaling that promotes tooth loss, contributing to the prolonged presence of primary teeth.

Understanding this cause is particularly important in pediatric dentistry, as early intervention may be necessary to prevent complications and ensure proper alignment and health of the permanent teeth that are set to erupt. This context further highlights why monitoring primary teeth for signs of trauma or infection is essential in pediatric dental practice.