The auxiliary occlusal rest on teeth for a partial denture should be placed:

The placement of the auxiliary occlusal rest for a partial denture is crucial for ensuring proper function and stability of the prosthesis. Positioning the auxiliary rest away from the fulcrum line is important because it allows for better distribution of forces during chewing. This placement helps to prevent excessive tipping or movement of the remaining teeth, thereby enhancing the overall stability of the partial denture.

When an auxiliary occlusal rest is located near the fulcrum line, it can lead to increased stress on the abutment teeth. This can result in undesirable rotational movements during mastication, which could compromise the longevity of the remaining natural teeth and the partial denture itself.

Having the rest away from the fulcrum line allows the partial denture to maintain its position more effectively, aiding in preventing any potential movement that could result in discomfort or inefficiency during use. In essence, this positioning is fundamental to the proper biomechanics of partial dentures, leading to a more functional and comfortable outcome for patients.