MAJOR CONNECTORS IN RPD PDF

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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Stresses on different dental prosthesis have been studied using various techniques such as brittle coatings, strain gauges, holography, stereo-photometry, two and three-dimensional photo elasticity, finite element analysis and other numerical methods.

Oral mucosa covering the edentulous ridge vertically distorts approximately 0. The anteroposterior bar showed the least deformation. Four mandibular frameworks were prepared so that they could be attached to the mandibular metal model.

The reason for the no or little interference with speech by the bar connector may not be unconnected with the fact that the active speech areas are not covered in this connector design. Model 4—full palatal plate in class II Fig.

Study of Deflections in Maxillary Major Connectors: A Finite Element Analysis

Similarly in the class II situation deflections were studied with two frameworks Anteroposterior palatal strap and Full palatal coverage. The areas where the deflection was observed were almost same.

Care must be exercised to create a groove not in excess of 0. The dentist should select the one which will least interfere with speech, mastication, swallowing and comfort.

It is through the major connector that other components of the partial denture become unified and effective.

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These results were in accordance with the photogrammetric evaluations, indicating that these two major connector designs had the highest deformation Table 2.

The specifications for the dimensions of the teeth were taken from the textbook of dental anatomy by wheelers. Both showed deflections which were maximum at the crest of the ridge on the saddle maojr and the entire plate excluding the posterior palatal strap.

Study of Deflections in Maxillary Major Connectors: A Finite Element Analysis

Values exceeding this produce significant flexure on partial denture frameworks, but the clinical reliability of these results is disputable. Fig 3d Limiting points on anteroposterior bar. A cingulum bar located on or slightly above the cingula of the anterior teeth may be added to the lingual bar or can be used independently Figure Model 4—class I—full palate load application. It should be uniformly thin and its anterior border should be located to follow the contours between the crests of the rugae.

The latching mechanism is opposite to the hinge, adjacent to tooth The acrylic resin connector ranked next to metal bar connector in acceptability. A rigid plate including evenly spaced lines in 1-cm squares and photogrammetric control points of different heights, and a denture holder prepared from thermoplastic material were used to take photographs.

It contributes to the support and bracing of a partial denture by distributing functional loads widely to the teeth, and in case of the maxilla, to the mucosa.

Where as in a class III situation the load was taken maximum by the rest and outer part of the anterior and posterior straps because of the situation being mostly teeth supported. Bulk to enhance rigidity fpd in increased thickness in areas that are a hindrance to the tongue.

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The frameworks were, Model 1—Antero-posterior palatal strap in class I Fig. It permits the making inn a uniformly thin metal plate that reproduces faithfully the anatomic contours of the patient’s own palate.

Their age ranged from 18 to 60 years.

Major Connectors.

xonnectors The Major connector is the major component of the cast partial denture to which all other parts are directly or indirectly attached. In either instance, the superior border of a lingual bar would have to be placed too close to the gingival tissue. Selection of the type of connector is based on four factors: Right and left mesial rests showed the highest deformation in the palatal strap major connector.

By proper use of direct retainers and Placement of the components in the most advantageous position. This result is maior with the findings of other researchers. Please review our privacy policy. It may be used as a plate of varying width that covers the area between two or more edentulous areas as a complete or partial cast plate that extends posteriorly to the junction of the hard and soft palates in the form of an anterior palatal connector with a provision for extending an acrylic resin denture base posteriorly.

Labial Bar Fortunately, in only a few situations does extreme lingual inclination of the remaining lower premolar and incisor teeth prevent the use of a lingual bar major connector. To provide a visible finishing line for the casting Slide