Posts Tagged ‘ maxillary ’
Conventional complete dentures are made by taking accurate impressions of maxillary and mandibular denture bearing areas and associated structures. Complete dentures replace all of the natural dentition and associated structures of the maxilla or mandible. It is entirely supported by tissues – mucous membrane, connective tissues and underlying bone.
Upper and lower complete dentures
Temporary Removable Partial Dental Prosthesis is incorporated into a total denture treatment plan for various reasons. Temporary removable partial dentures are typically made of acrylic resin with wire retention and may include other components to provide support.
Sometimes replacement of missing teeth is necessary for short period of time such as for the sake of appearance while tissue is healing. Various functions of temporary denture for the partial edentulism strive to achieve the temporary goals with minimum time and cost.
Maxillary Temporary Removable Partial Denture
Photo 1 shows a transitional removable partial denture for a patient whose oral hygiene and periodontal condition is very poor.
Porcelain fused to metal crowns are constructed in metal alloy with porcelain fused to either all or most of its surface. PBC, also known as ceramics fused to metal dental crown is indicated in situations whrere a stronger restoration is needed, such as the presence of minimal interocclusal clearance. Compared to all ceramics dental crowns, the strength of this type of restoration is excellent.
Photo 1: Porcelain fused to metal dental crown
Cantilever Bridge, also known as Cantilever Fixed Partial Denture, is a prosthesis where the pontic (artificial tooth) is supported on one side only by one or more abutment teeth. The pontic is attached to a single or to two retainers splinted together but has no connection at the other end of the artificial tooth. The abutment tooth or teeth may be either mesial or distal to the edentulous space.
Photo 1: Cantilever Fixed Partial Denture with one abutment tooth
Fixed-fixed Partial Denture, also known as fixed-fixed dental bridge, is a design of fixed partial prosthesis that has a rigid connector at both ends of the pontic. This basic design of FPD has a minimum of three units that can be cemented in one piece. The abutment teeth are rigidly splinted together and must be prepared parallel to each other. Its retainers or crowns should have approximately the same retention as each other. This is to minimized the risk that forces applied to the fixed-fixed FPD will dislodge one retainer from its abutment, leaving the FPD suspended from the other abutment.
Fixed-fixed Partial Denture for missing lateral incisor, 22 FDI Two-Digit Notation.
Tooth Preparation
Amount of Reduction in Tooth Preparation for Fixed Partial Denture
Porcelain Fused to Metal Fixed Partial Dentures like this, requires 1.2 - 1.5mm facial reduction, 0.75 - 1mm lingual reduction and 1.5 - 2mm incisal reduction.
Acrylic Resin Upper Removable Partial Denture - Occlusal
Acrylic resin removable partial denture with wire retainers is sometimes recommended for frail elderly patients. It is justified by the notion that acrylic resin is faster and easier to work with, affordable and amenable to repair. Acrylic resin prosthesis treatment is used because the remaining teeth are periodontally compromised, patients tend to exhibit poor oral hygiene and poor cooperation. Acrylic RPD can also be transformed if extractions become necessary.
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Horseshoe-shaped Removable Partial Denture Framework
An Upper Complete Denture was constructed for a 65 years old female patient. The denture base is made of ordinary acrylic base with tint modification to mimic the color of Oral Mucosa of the dentate lower arch of the patient. Leeformatron is the brand name of denture teeth used.
Upper Complete Denture - Occlusal Side
Maxillary / Upper Complete Denture which was made for a 74 year old male patient. The denture was fabricated using the SR Ivocap System by Ivoclar Vivadent. SR Ivocap is based on a special injection technique which produces highly accurate methyl methacrylate-based dentures. Compensation for chemical shrinkage is made possible by pressured feeding of additional material (inflowing material). This system can also be used in removable partial dentures, denture relines, orthodontic appliances and occlusal splints.
Upper Complete Denture - Occlusal