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. 38. 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. Jing Zhao, Xinzhi Wang, in Advanced Ceramics for Dentistry, 2014. 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. As with FPDs, the RPD can also restore an incomplete dentition, but with broader indications because of not-so-strict prerequisites. 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. 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. Learn More About Sagix. 3-9). Stability also depends on the manner in which the patient uses the prosthesis (Fig. 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 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. 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 … A denture properly designed and constructed to make The … The True Precision of the Ceka Revax systems provide for hinge, vertical, and rotational movements to provide maximum abutment protection. 8. 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. Troughs for the extensions of the intra-coronal attachments are made to have some space around extensions. After designing support, stability and retention, other parts should be considered. Support: Resistance to movement towards the tissues or teeth 7. 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. Abutment: A tooth that supports a partial denture. Stability of a RPD is obtained by all the factors which provide support, retention, reciprocation, bracing, indirect retention, occlusion, and connection. Stability: Resistance to movement in a horizontal direction (anterior-posteriorly or medio-laterally) 6. Ceka Attachments. Stability: Resistance to movement in a horizontal direction (anterior-posteriorly or medio-laterally 6. 8. 3.3.3 Removable Partial Dentures. The most Retainer: A component of a partial denture that provides both retention and support for the partial denture Retainer: A component of a partial denture that provides both retention and support for the partial denture Featuring adjustable retention, the design satisfies the criteria for esthetics, retention, support and stability for a tooth-borne maxillary RPD. 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. Abutment: A tooth that supports a partial denture.
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