… the friction coefficient between the abutment and the clasp. The friction coefficients between
a tooth and clasp metals have been reported as approximately 0.2 in the presence of saliva. …

… Whatever the cause, it is clear that the friction between tooth and clasp cannot normally be
improved by roughening the clasp, where itcontacts the tooth. Chrome cobalt is an exception …

… amount of undercut, curvature and encirclement of abutment, and the friction coefficient.
Although undercut is an effective parameter for retention, a 0.25-mm undercut is used clinically …

… As the inner surface of the clasp tip wears, the smoother inner surface … the tip changes the
coefficient of friction and as the coefficient of friction decreases, the retention force of the clasp …

… depends on friction and the force exerted by the clasp. … when the clasp is at rest but falls
rapidly as the tip of the clasp is … when the deflection of the clasp corresponds to the depth of the …

… the clasp arms and rests, interference of denture base resin near the body of the clasp,
deformation of the clasp… It is difficult to increase the undercut or friction without remaking the RPD. …

… Esthetic considerations are critical in the selection of direct retainers, especially if the patient
… the likelihood of introducing a clinical or laboratory error.1-5 The use of the friction clasp …

… The null hypothesis was that the pullout location and clasp type would not affect the retention
force of the clasp. … abutment therefore increase the friction between the minor connector or …

… This study aimed (1) to establish a three-dimensional (3D) finite-element modelling
method of I-bar clasps, and (2) to clarify the effect of the shape on the stress and stiffness of I-bar …

… clasps, this design reduces the retention force at the same undercut depth and affects the
stress distribution of the clasp [… Moreover, integrating the friction factor into the analysis will be …