What essential property must a major connector possess?

The essential property that a major connector must possess is rigidity. Major connectors in dental prosthetics serve as the primary structural element that connects various components of a dental prosthesis, such as partial dentures. Rigidity is vital because it ensures stability and support for the prosthesis, allowing for effective force distribution during function and preventing deformation or movement of the prosthetic device in the mouth.

A rigid connector maintains the integrity of the design and enhances the overall performance of the prosthesis by providing consistent and reliable support. This is particularly important when forces are applied during chewing or other movements, as any bending or flexing of the connector could compromise the fit and function of the dental device. Therefore, rigidity is a critical characteristic that enables the major connector to fulfill its role effectively.

While flexibility, weight, and cost-effectiveness are factors that can be considered in the overall design of dental prostheses, they do not directly define the essential characteristics required of a major connector. Flexibility could lead to instability, weight may affect comfort and acceptance, and while cost-effectiveness is important for practicality, it does not influence the fundamental functional properties necessary for the connector's primary role.