What type of occlusal splint will cause more loading on the TMJ?

The choice indicating that an anterior primary contact occlusal splint causes more loading on the TMJ is based on the mechanics of occlusal splints and how they influence jaw dynamics and joint loading.

When using an anterior primary contact splint, the design directs occlusal forces towards the anterior region of the dental arch. This posture can lead to increased loading on the temporomandibular joint (TMJ) because the forces are not evenly distributed among the posterior teeth, which traditionally serve as the primary load-bearing structures during occlusion. Instead, the anterior teeth, which generally do not bear the same load in normal occlusion, experience increased forces in this scenario.

This anterior loading can lead to both an increased pressure on the condyle and the articular surface of the TMJ, potentially exacerbating any existing joint issues or even leading to new problems, such as discomfort or dysfunction.

Other types of occlusal splints such as those with posterior primary contact or full anterior contact may distribute occlusal forces more evenly or reduce direct loading on the TMJ, thereby creating a more supportive environment for the joint. Occlusal equilibration splints aim to balance occlusal forces but do not specifically direct increased loading onto