A Study of Partial Denture Clasping

Abstract

The most controversial and seemingly contradictory phase of partial denture design is that of the clasp component. Many clasp types have been presented to the profession, each being claimed by its originator to be the solution of all clasp­ ing problems and difficulties. A study of the rationale and method of design of each clasp type reveals a startling dis­ agreement. One might easily conclude that there is an irreconcilable and un­ scientific basis for the design of partial denture clasps. However, by analyzing all available clasp types from an unprejudiced point of view, and eliminating all preconceived conclusions, a common basis for clasp design can be found. Basic fundamentals applying to all clasps may be formulated and any specific clasp type may be rated on its ability to carry out these concepts. To illustrate the fundamentals of clasp design, the circumferential clasp will be used as an example. I t is the type of clasp most frequently encountered in partial denture construction, and is the basis for all types of clasp design.