American Board of Orthodontics (ABO) Practice Exam

The statement regarding HA (Hyaluronic Acid) injections in the treatment of TMD (Temporomandibular Disorders) aligns with strong evidence supporting their use, as discussed by Rinchuse and McMinn. This evidence suggests that HA injections can help reduce inflammation, improve joint function, and alleviate pain in patients suffering from TMD. Studies have indicated that these injections can lead to significant improvements in symptoms, particularly for individuals who have not responded well to more conservative treatments.

The rationale behind the effectiveness of HA injections lies in their ability to restore the synovial fluid characteristics in the joint, potentially leading to enhanced lubrication and reduced friction during movement. Additionally, they may play a role in the healing process by influencing cellular activities related to inflammation and tissue regeneration.

Other statements about HA injections are less accurate in this context. For instance, they are not the sole treatment method for TMD, as a multifaceted approach often yields better results. Furthermore, HA injections are not regarded as ineffective; on the contrary, they offer considerable benefits and sometimes act as a bridge until more definitive treatments are needed. Also, while these injections can be considered in various levels of severity, limiting their recommendation solely to severe cases overlooks their utility in managing TMD symptoms