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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However, when soft tissue covering the midline of the palate is less displaceable than the tissue covering the residual ridge, varying amounts of relief under the connectors must be provided to avoid impingement of tissue.

In addition, when wide diastemata exist between the lower anterior teeth, a continuous bar retainer may be more esthetically acceptable than a linguoplate. Design of Maxillary Major Connectors Blatterfein described five basic steps and is certainly applicable to most maxillary removable partial denture situations Step 1: Fifteen consecutive patients attending the prosthetic out-patient clinic of the Dental Center, University College Hospital, Ibadan who had never worn dentures were recruited into the study.

The original uniform thickness of the plastic pattern is thus maintained. Reaction of Tissue to Metallic Coverage. Mandibular incisors that are periodontally weak may thus be retained, with provisions for possible loss and future additions.

Stabilizing or reciprocal components as parts of a clasp assembly. Location Major connectors should be designed and located with the following guidelines in mind: Location of the inferior border was determined as suggested in Figure and extends to the mesial of the mandibular right molar.

Structurally, the tissue covering the palate is well suited for placement of the connector because of the presence of firm submucosal connective tissue and an adequate, deep blood supply. A questionnaire was administered to ascertain their reactions gpd each of the three denture designs. 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. Are rigid and provide cross-arch stability through the principle of broad distribution of stress.

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The major connectors used in maxillary removable partial denture frame works are mainly the Anteroposterior palatal straps, full palatal major connector, single palatal straps and horse shoe shaped major connector. A major connector is the component of the partial denture that connects the parts of the prosthesis located on one side of the arch with those on the opposite side.

Appropriate relief beneath the major connector avoids the conndctors for its adjustment after tissue damage has occurred.

Major Connectors.

This type of major connector easily traps food and is often more objectionable to patients than a linguoplate. Srilakshmiand G. Indications for the use of a linguoplate may be listed as follows: The designs were palatal plate, U-shaped plate, palatal strap, and anteroposterior bar. The greatest damage an RPD can produce is that which results from a flexible major connector.

Similar results were obtained by Campbell 9Wagner and Traweek 14 in their studies, where the bar connector was reported as the most acceptable maxillary major connector because it interfered least with speaking, while metal plate connector was reported as the least acceptable because it interfered most with speaking.

Then, photographs were taken using the light of a W ultraviolet lamp Tiede.

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

It is even possible to vary the properties within an element according to the polynomial applied. Lingual bar FigureA.

Limited space for the lingual bar requires use of the linguoplate major connector. The fact that dental technicians mamor and patients 4 do not prefer palatal plates, while dentists 5 prefer wide palatal strap or palatal plate major connectors because they distribute the force to wide surfaces, is quite interesting.

The wider the coverage of a U-shaped major connector, the more it resembles a palatal plate-type connector with its several advantages Slide A computerized hydraulic machine was programmed fpd load the eight test dentures at 4-Hz frequency under a vertical load of kg and a maximum ofcycles.

The rpx plate showed the most deformation. FEM can be easily interpreted in physical terms as well it has a strong mathematical base.

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The metal bar major connector was the most acceptable maxillary major connector while acrylic resin plate was more acceptable than metal plate maxillary major connector.

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

Tissue relief is necessary to protect the im tissue of the floor of the mouth. Fifteen consecutive patients attending the prosthetic out-patient clinic of Dental Center, University College Hospital, Ibadan who had never worn dentures were recruited into the study.

Because the connector must have sufficient width and bulk to provide rigidity, a linguoplate is commonly used when space is insufficient for a lingual bar. Also, the choice of the shape and location of major connectors is greater in the upper jaw because of conectors larger area available for coverage offered by the hard amjor 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.

Do not contribute to retention or trapping of food particles.

5: Major and Minor Connectors | Pocket Dentistry

These major connectors have a specific thickness and width respectively so that they can withstand both axial and tangential load during mastication [ 4 ]. This information was accepted cconnectors basic, and a load of kg was used for all dentures tested. Objectives The aim of this study is to compare subjective patients’ reactions to three maxillary major connectors: A properly designed rigid major connector effectively distributes forces throughout the arch and acts to reduce the load to any one area while effectively controlling prosthesis movement.

Anteroposterior bar posterior border of posterior bar. These deflections can be controlled by. The consent of patients as well as the ethical clearance was obtained from the beginning of the study.