What should the inferior surface of the maxillary occlusal rim be parallel to?

The inferior surface of the maxillary occlusal rim should be parallel to Camper's Line and the inter-pupillary line. This alignment is critical for achieving proper occlusion and esthetics in denture fabrication and other dental procedures.

Camper's Line, also known as the "facial plane," is defined as a line drawn from the inferior border of the orbit to the top of the ear canal (the tragus). This line serves as a reference in dentistry for establishing the orientation of the occlusal plane. The inter-pupillary line, which is the horizontal line connecting the pupils of the eyes, is another important reference point. By ensuring that the maxillary occlusal rim is parallel to both Camper's Line and the inter-pupillary line, dental professionals can aid in achieving a proper anatomical and functional orientation of the occlusal plane. This approach enhances the patient's comfort and functionality of the denture or restorative prosthesis, leading to better overall satisfaction.

This alignment is particularly significant in prosthetic dentistry, where the relationship of the arches must be carefully considered to create a harmonious occlusal relationship. Ensuring that these references are respected helps in maintaining a balanced occlusion and contributes to the aesthetic appearance of the final