What characteristic must a major connector of a denture possess?

A major connector of a denture must be rigid to ensure that the denture can effectively transmit functional forces without flexing or deforming. Rigidity is essential because it helps maintain the shape and position of the denture in the mouth during activities such as chewing and speaking. A rigid connector provides stability and prevents movement of the denture base, which is crucial for the comfort and efficacy of the prosthesis.

When the major connector is rigid, it contributes to the overall strength of the partial denture, preventing potential distortion that could lead to mechanical failure or discomfort for the patient. This rigidity allows the connector to adequately support other components of the denture, such as artificial teeth and clasps, ensuring that the forces applied during function are evenly distributed.

While relief, support characteristics, and stability are also important considerations in denture design, they do not override the necessity for rigidity in the function of the major connector. A connector lacking rigidity may compromise the entire prosthesis, leading to issues with fit and function.