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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5: Major and Minor Connectors
The power of the finite element method is its versatility. In this way, maximum freedom is ensured for gingival tissue. Figure Sagittal section through the linguoplate demonstrating a basic half-pear—shaped inferior border with the metallic apron extending superiorly.
Location Major connectors should be designed and located with the following guidelines in mind: Removable partial dentures help in replacing missing teeth and the tissues to a certain extent. On the other hand the maximum displacements in the buccal—distal direction with the same vertical load were found in class I Anteroposterior palatal strap major connector where as the smallest maximum buccal displacement was found in class IV Anteroposterior palatal strap.
When a linguoplate is the major connector of choice, but the axial alignment of the anterior teeth is such that excessive blockout of interproximal undercuts must be made, a cingulum bar may be considered.
This supports the result obtained in another study 9 connctors metal borders parallel to the tongue were better tolerated than transverse borders. Go to Application Have a question?
Its lack of rigidity 2. A comparison of the retention of various denture base amterials. The acrylic resin connector ranked next to metal bar connector in acceptability.
Removable partial denture is a prosthesis fabricated to replace missing teeth and related tissues. Major connectors should be designed and located with the following guidelines in mind: The posterior limitation of a maxillary major connector should be just anterior to the vibrating line.
The inferior border of the planned major connector can then be located at the height of rod lingual sulcus of the cast resulting from such an impression. Material and methods 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. 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.
Major Connectors. – ppt video online download
The anteroposterior bar showed the least deformation. However in a recent study of denture wearers all the patients showed a reduced performance in masticatory ability J Indian Prosthodont Soc.
Major connectors must be rigid to perform their functions with maximum efficacy. Ij correctly designed linguoplate will engage the remaining teeth to help resist horizontal rotations.
Today finite element method can be applied to many areas in the field of engineering, Biomedical engineering being one of them. Jan 17, Posted by mrzezo in Prosthodontics Comments Off on 5: Major connectors should be free of coonnectors tissue. Their age ranged from 18 to 60 years.
The specifications for the dimensions of the teeth were taken from the textbook of dental anatomy by wheelers. As the special points are different for each major connector type, in the evaluation stage each major connector was analyzed by itself cnonectors respect to the characteristics of its special points.
Study of Deflections in Maxillary Major Connectors: A Finite Element Analysis
Its uniform thinness and the thermal conductivity of the metal are designed to make the palatal plate more readily acceptable to the tongue and underlying tissue. These major connectors have a specific thickness and width respectively so that they can withstand both axial and tangential load during mastication [ 4 ].
A taper of the superior border of the bar to the soft tissues above will minimize interference with the tongue and will be more acceptable to the patient than would a dissimilar contour. The linguoplate does not in itself serve as an indirect retainer.
Do not interfere with and are not irritating to the tongue. The lingual bar and the rod are by far the most common major connectors used in mandibular removable partial dentures.
Fig 2 Coordinate axes on a representative perspective for complete plate design. For a single palatal bar to be effective, it must be rigid enough to provide support and crossarch stabilization and must be centrally located between the halves of the denture. The bracing effect provided by the remaining teeth must be depended upon to resist such rotation. Figure A, Height of floor of the mouth tongue elevated in relation to lingual gingival sulci measured with a periodontal probe.
Finite element methods have been proved to be one of the best methods for research.