Enhancing retention of partial dentures using elastomeric retention rings

Retention in Conventional Fixed Partial Dentures: A Review

Effect of abutment mobility, site, and angle of impact on retention of fixed partial dentures.

Fixed partial dentures cemented to dies of adjustable mobility were subjected to repeated impacts at three different sites. Immobile abutments retained their prostheses longer than mobile abutments. Impacts that fell between the centers of rotation of the abutments were withstood longer than impacts that fell nearer the ends of the prostheses. This study failed to show a significant difference ...

Vertical marginal gap & retention of ceramic full coverage & inlay retained ceramic fixed partial dentures

Objectives: A comparison study between ceramic full coverage FPDs & 3 designs of ceramic inlay retained FPDs regarding vertical marginal gap & retention. Materials & Methods: Twenty samples were constructed and divided into 4 groups according to the type of restorations: full coverage, inlay-shaped (occluso-proximal inlay + proximal box), tub-shaped (occluso-proximal inlay), and proximal box-sh...

Retention force of T-bar clasps for titanium and cobalt-chromium removable partial dentures.

The objective of this study was to evaluate the retention force of T-bar clasps made from commercially pure titanium (CP Ti) and cobalt-chromium (Co-Cr) alloy by the insertion/removal test simulating 5 years use. Thirty-six frameworks were cast from CP Ti (n=18) and Co-Cr alloy (n=18) with identical prefabricated patterns on refractory casts from a distal extension mandibular hemi-arch segment....

Indirect Retention Revisited: Risks, Benefits and Paradigm-shift in Removable Partial Dentures

The clinical success of removable partial denture (RPD) relies on the widely stablished biomechanical principles of retention, stability and support. In contemporary approaches, however, open prosthetic designs with minimal oral tissues coverage have been advocated. Longstanding conflicting opinions regarding the indirect retention concept have arisen, although robust scientific evidence is sti...