American Board of Orthodontics (ABO) Practice Exam 2026 – All-in-One Resource to Master Your Orthodontics Certification!

The condition that raises concern before orthodontic treatment is the presence of TMJ pain with opening limitation. This situation indicates a potential dysfunction in the temporomandibular joint, which could complicate orthodontic therapy. Pain in the TMJ combined with limited range of motion often suggests underlying issues such as inflammation, internal derangement, or muscular problems that might be exacerbated by orthodontic forces.

In contrast, TMJ clicking without pain can be a common finding and may not require immediate intervention if there are no associated symptoms. Frequent headaches, while concerning, may not directly correlate with the need to delay orthodontic treatment unless they are clearly linked to TMJ dysfunction. The absence of significant discomfort or limitation in jaw mobility suggests that an intervention might not be urgently necessary.

Therefore, the presence of pain and limitation in jaw opening signifies that an assessment of the TMJ condition is crucial before proceeding, making it the most concerning condition in the context of orthodontic treatment planning.