THE GEAR OF RETENTION -PIN RETAINED AMALGAM Two Case Reports

A pin retained amalgam restoration may be defined as a type of complex amalgam restoration requiring the placement of one or more pins in the dentin to provide adequate resistance and retention forms.Pins are used whenever adequate resistance and retention forms cannot be established with slots, locks, or undercuts only. The pin-retained amalgam is an important adjunct in the restoration of teeth with extensive caries or fractures.Not only the pins help in binding the amalgam to the tooth structure, they also help in binding the weak tooth structure to the amalgam. These case reports present the innovative technique that outlines the reconstruction of severely damaged, posterior teeth with missing functional cusp.