Which characteristic is NOT associated with odontomas in children?

Odontomas are typically benign tumors that arise from the dental tissues and are often associated with the development of teeth. One key characteristic of odontomas is that they are usually asymptomatic. This means that they often do not produce any symptoms, which can lead to them being discovered incidentally on radiographs used for other purposes.

Being asymptomatic is important because it allows for the possibility of odontomas to exist without causing immediate concern for the patient or the clinician. This characteristic distinguishes them from conditions that typically present with noticeable pain or discomfort, as mentioned in the first option.

On the other hand, odontomas are known to potentially lead to various complications, such as the impaction of permanent teeth (which occurs when the development of teeth is obstructed), and they can indeed cause bony expansion due to their growth in the jawbone. Furthermore, odontomas can contain calcified structures, which are characteristic of these tumors. These features highlight the significance of understanding odontomas in pediatric dentistry, especially regarding their management and the potential implications for tooth development and alignment.