What treatment might be indicated for a patient with retained primary molar with no problems?

In the scenario where a patient has a retained primary molar with no associated problems, the appropriate approach would be to indicate "no treatment." When a primary molar is retained and asymptomatic, meaning that it does not cause pain, does not have signs of infection, and isn't interfering with the development of the permanent teeth, it often does not require any intervention.

This is particularly important because primary teeth serve significant functions in maintaining space for the permanent teeth and play a role in the child’s ability to chew and speak properly. If the retained tooth is functioning well and does not pose a risk for future dental issues, monitoring might be sufficient without the need for immediate extraction.

In certain other scenarios, such as if the tooth were symptomatic or if there were concerns about its impact on adjacent teeth or overall dental health, different treatments like extraction or restoration might be considered. However, since the question specifically indicates that there are no problems with the retained primary molar, leaving it untreated is justified and often the best course of action.