Removable partial denture (RPDs) as the names suggests, is not fixed permanently in the patient’s oral cavity and can be easily removed by the patient. Troughs for the extensions of the intra-coronal attachments are made to have some space around extensions. Retainer: A component of a partial denture that provides both retention and support for the partial denture The purpose of this study is assessing the quality of the frameworks made in the department of prosthodontics, Qazvin school of dentistry, regarding their causes of malfunction, retention, stability, and support. 3.3.3 Removable Partial Dentures. Stability: Resistance to movement in a horizontal direction (anterior-posteriorly or medio-laterally 6. RPD DESIGN: CONSIDERATIONS IN SUPPORT, STABILITY AND RETENTION MWANGI A. M. MWANGI C. W. 23.10.2014 Retention Def: the ability of the prosthesis to resist dislodgement in a direction opposite its path of insertion Types of retention: Direct retention Indirect retention Passive retention Direct retention Can be provided by: Clasps/ extra-coronal attachments Precision … Traditionally, removable partial denture (RPD) design has focused on biomechanical aspects such as stability, retention, loading of supporting tissues, and mechanical durability. Support: Resistance to movement towards the tissues or teeth 7. A denture properly designed and constructed to make Ceka Attachments. Retainer (Clasp) Assembly A Clasp (retainer) assembly is a combination of several RPD components that engage an abutment tooth extra-coronally for support, stability and retention of the partial denture. Abutment: A tooth that supports a partial denture. The … 8. After designing support, stability and retention, other parts should be considered. Stability also depends on the manner in which the patient uses the prosthesis (Fig. Unique female contacts a greater surface area of the sphere for increased retention and stability. metal components that supply strength, retention, stability, and support of partial denture. 8. Featuring adjustable retention, the design satisfies the criteria for esthetics, retention, support and stability for a tooth-borne maxillary RPD. 3-9). Learn More About Sagix. Jing Zhao, Xinzhi Wang, in Advanced Ceramics for Dentistry, 2014. Support: Resistance to movement towards the tissues or teeth 7. 38. When a distal extension RPD is considered, an indirect retainer should be incorporated into the framework in order to prevent upward rotational movement of the denture. Stability: Resistance to movement in a horizontal direction (anterior-posteriorly or medio-laterally) 6. As with FPDs, the RPD can also restore an incomplete dentition, but with broader indications because of not-so-strict prerequisites. Abutment: A tooth that supports a partial denture. Retainer: A component of a partial denture that provides both retention and support for the partial denture The fit, retention and stability of the RPD foundation is verified again and checked with the pressure indicating paste for uniform tissue compression during connecting male attachments. The most Stability of a RPD is obtained by all the factors which provide support, retention, reciprocation, bracing, indirect retention, occlusion, and connection. Acknowledgements: The authors thank Jeffrey P. Miles, DDS, an associate professor at the University of the Pacific Arthur A. Dugoni School of Dentistry, for the illustrations in Figure 3 and Figure 4. The True Precision of the Ceka Revax systems provide for hinge, vertical, and rotational movements to provide maximum abutment protection. Risk Factors in Traditional Design The majority of prosthodontic textbooks have con-centrated on the RPD design principles of force dis-tribution, support, stability, and retention. ple shape.37 There is significant support in the liter-ature for the view that gingival/periodontal health is favored by the open/hygienic design.