Attachment technique: It’s matching! How does it work?
A matchbox is used as a descriptive example to explain the basic functioning of an attachment in dental prosthetics. The drawer is held as well horizontally as vertically. Why doesn‘t the inner part fall to the ground in an upright position?
Both parts have parallel contact surfaces. They move against each other with a certain resistance (friction), which holds both parts together. Now imagine that the inner part is a primary telescopic crown (fixed) and the outer part, a secondary telescopic crown (removeable). In this example, it’s easy to show, how a telescopic or attachment denture is inserted inside a client’s oral cavity and cannot be removed without external forces.