MAJOR CONNECTORS. DEFINITION. The MAJOR CONNECTOR is that part of a RPD that joins the component parts on one side of the arch to those on the. Major Connectors. BDS III year. RPD Lecture. Timing- PM. Dr Deeksha Arya . Associate Professor. Department of prosthodontics. Components of a typical. Major Connectors IN RPD – Download as Powerpoint Presentation .ppt /.pptx), PDF File .pdf), Text File .txt) or view presentation slides online. DENTISTRY-.
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It is through the major connector that other components of the partial denture become unified and effective. The metal bar major connector was the most acceptable maxillary major connector rpc acrylic resin plate was more acceptable than metal plate maxillary major connector.
The total maximum deflection seen even in class II Full palate major connector was more when compared to class II Anteroposterior strap major connector.
C, Impression made with functional movement of the tongue to demonstrate maximum shortening of the floor of the mouth. Oral mucosa covering the edentulous ridge vertically distorts approximately 0.
MAXILLARY MAJOR CONNECTORS |authorSTREAM
Since biology is not a compatible entity, though FEA provides a sound theoretical basis of understanding the behavior of a structure in a given environment, it should not be considered alone. Values exceeding this produce significant flexure on partial denture frameworks, but the clinical reliability of these mmajor is disputable. The patients were requested to fill the questionnaire after the three – week evaluation period.
You do not have the permission to view this presentation. Palatal strap and U-shaped plate dentures were between these two groups in terms of deformation amounts. This is considerably greater than the intrusion exhibited by abutment teeth, at approximately 0.
Similarly, all the patients reported that the three maxillary major connectors were not equally easy to connectors during normal rest.
Upload from Desktop Single File Upload. Their age ranged from 18 to 60 years. Results This study consisted of a finite element analysis of the deflection of various designs of chrome cobalt cast partial denture frameworks in different situations.
Sublingual bar FigureC. This combination of wide rd and thickness of acrylic plate may be responsible for low speech intelligibility recorded with the acrylic resin maxillary major connector. Model 1—two mesial occlusal rests on the PM I Fig.
Acceptability of maxillary major connectors in removable partial dentures
The major drawback of FEM is sensitivity of the solution gpd the geometry of the element such as type, size, number, shape and orientation of elements used.
Connectors should be of minimum bulk and should be positioned so that interference with the tongue during speech and mastication is not encountered.
The greatest damage an RPD can produce is that which results from a flexible major connector. Used in almost any maxillary partial denture design. Each component braces the others against possible torque and flexure. National Center for Biotechnology InformationU. Model 4—class I—full palate load application.
Major Connectors. – ppt video online download
The anterior connector may be extended anteriorly to support anterior tooth replacements. These sketches were connected through guide strings. In this form, a U-shaped connector is made rigid because of the added horizontal strap posteriorly. By virtue of intimate contact, interfacial surface tension between metal and tissue provides the prosthesis with greater retention Slide Using these dimensions the teeth were modeled using the software.
The nonbearing areas are the lingual gingival tissue within 5 to 6 mm of the majpr teeth, hard areas of the medial palatal raphe including jnand palatal tissue posterior to connectoors vibrating line Slide Tissue response to such small spaces is better when they are bridged with an apron than when they are left open.
Also, the choice of the shape and location of major mamor is greater in the upper jaw because of the larger area available for coverage offered by the hard palate 2 The location and areas of tissue coverage by a major connector is of uttermost importance, as these features will affect the acceptability of the prosthesis and its eventual performance. Mandibular incisors that are periodontally weak may thus be retained, with provisions for possible loss and future additions.
The corrugation in the anatomic replica adds strength to the casting; thus a thinner casting with adequate rigidity can be made. Similarly in the class II situation deflections were studied with two frameworks Anteroposterior palatal strap and Full palatal coverage.
The design consisted of circumferential buccal retentive clasp epd with mesial rests. In either instance, the superior border of a lingual bar would have to be placed too close to the gingival tissue.
The removable partial dentures have a design pattern which depends on the most important component that is the major connectors.
Questions Metal bar Metal plate Acrylic plate Which denture interfered most with speaking? Support and stabilization were gained by using rests, minor connectors arising from the labial bar, and well-fitting denture bases. D, Lingual bar with continuous bar cingulum bar.
The force transmission in RPD designs with different major connectors has been analyzed by photoelasticity, 9 strain gauges, 9,10,14,15 brittle lacquer, 14 and holography.