intracoronal attachments for removable partial dentures

Download Intracoronal Attachments for Removable Partial Dentures

Post on 11-Apr-2015




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Intracoronal precision attachments for removable partial dentures are primarily selected when: A. The retaining abutments are large enough for adequate tooth reduction for the attachment female to be incorporated into a normal crown contour. B. Strong or multiple abutments exist as the forces are directed to the retaining abutments. C. A stable occlusal table is desired. D. Often opposing either a full denture or a bilateral free-end removable partial denture. Intracoronal precision attachments are normally rigid or non-resilient directing forces down the long axis of the retaining abutments. Therefore, multiple abutments are common. Intracoronal rigid attachments provide for a more stable occlusal table and removable prosthesis.

FR AttachmentThe FR system for removable partial dentures is a technological revolution for what many call semi-precision or "mill-ins." A tapered, friction retained intracoronal precision attachment for removable partial dentures with a lingual arm and for segmented bridgework or non-parallel abutments in fixed bridgework. The female is actually cast against the prefabricated male for total accuracy, improved proximal wall contacts, and tremendous time and labor savings. This simple and inexpensive attachment uses a single investment technique, eliminates porcelain in the female due to the silicone male, allows for easy and accurate duplication, no soldering is needed, easy separation of male and female, and the miniature size allows for use in close bite situations. Easy insertion because of the tapered male, improved esthetics (no metal on the occlusal), excellent retention and reduced wear account for this being one of the most popular attachments in dentistry.

FR Attachment


UNOR 10802UNOR InstructionsThe UNOR is a screw adjustable retention precision attachment for intracoronal use. The beveled male is adjustable so retention may be either increased or decreased, allowing for easy patient insertion and removal, thus less wear. Vertical height may also be altered for short or close bite situations. The female may be directly cast with precious or semi-precious alloys for easy fabrication. A female ceramic former is available for creating a female in non-precious castings. The excellent external wall contact allows for guide plane stability. The male may be connected to the cast frame by acrylic resin, composite resin, or solder. The system also allows for conversion of a fixed bridge to a removable partial denture if distal abutments are lost.

UNOR 10802


Extracoronal precision attachments for removable partial dentures are recommended when: A. Less tooth reduction is required. Retaining abutments are small to avoid over-contoured intracoronal attachment abutments and/or pulpal exposure. B. Extracoronal precision attachment are traditionally easier to insert and remove. These are used for patients with limited manual dexterity, or the prosthesis has a difficult path of insertion and removal. C. The patient does not always wear the removable prosthesis. Intracoronal females in retaining abutments will collect food and present problems when the patient attempts to seat the intracoronal retained prosthesis. Extracoronal Precision attachments are normally resilient to allow free movement of the prosthesis to distribute potentially destructive forces or loads away from the abutments to supportive bone and tissue. Three distinctive movements are defined in function: (1) Hinge, (2) Vertical, and (3) rotational. The fewer abutments remaining, and the weaker the abutments are, the greater the need for resiliency or free movement to direct the forces away from the abutments to the supportive bone and tissue via the base of the prosthesis.

Preci ClixA new idea in removable partial dentures, overdentures, and implant bars. 30, 45, and 60 female patterns allow for improved hygiene-- open embrasures and light gingival contact. Audible *click* for patient security when prosthesis is engaged. Either a prefabricated smooth ball, or castable ball with cup bur to finish the casting. Limited vertical requirements. 2.25mm male ball.

Ceka AttachmentsCeka Revax Ceka ClassicThe Traditional Ceka and Ceka Revax systems provide for hinge, vertical, and rotational movements to provide maximum abutment protection. Each attachment consists of three angulations of plastic female profiles with precision metal insert, male spring pin, and retention component. The three angulations allow the user to design the case for the patients needs. Please specify the alloy of choice: Red is Irax, for precious/semi-precious; Blue is Noprax, for non-precious; and Yellow is Platirax for all alloys. Also specify the type of retention for the male spring pin: acrylic, solder, or spacer.

Ceka Revax

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Preci Vertix Preci Vertix "P"Preci Vertix InstructionsThe Preci Vertix and Vertix "P" provides for hinge and vertical movements. It should be supported by a broad based ridge. The Vertix is a very inexpensive and popular system that provides patient comfort and abutment protection for both mandibular and maxillary bilateral removable partial dentures. Unilateral free end removable partial dentures should be cross arch stabilized. The Vertix features time-saving and simple routine techniques, requires no additional tools, may be cast in any alloy to eliminate soldering and dissimilar alloys, and provides outstanding space-saving aesthetics. The plastic female absorbs negative movements to protect abutments and provide patient comfort. It requires only a routine full coverage abutment preparation and provides easy patient insertion and removal. The only servicing requirement is the occasional, fast, easy female replacement. Three different female retention clips are available to accommodate all your retention needs. Also, the new green castable hood allows the user to have a crown, or pontic, where traditionally the undesirable denture tooth is. The Preci Vertix P Combo kit comes with all the tools and components you need to do two units.

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Instructions for Pre-Cast Vertix Hood Case Study using Preci Vertix P

Preci Vertix "P"

Preci Vertix

Preci Vertix ATExtracoronal slide attachment. Burn-out plastic male. The friction of the titanium female can be progressively adjusted with screw and plastic friction part. Excellent attachment for lateral stabilization. Total height: 4.40mm. May be reduced by 1.00mm at tissue side.

CSACSA InstructionsCastable Spherical Attachment for extracoronal partial dentures and overdenture bars.

O-SO Distal ExtensionView OSO O-Ring Size Chart The OSO is a popular extracoronal attachment that provides free movement in all planes for maximum protection. A proven retentive system utilizing an easily replaceable rubber O ring. This is a resilient attachment with vertical and hinge stress-breaking action for freeend and bounded partials. May be used in conjunction with other attachments. The metal retainer ring is sold separately.O-SO Distal Extension Attachment


Universal IC AttachmentThe IC attachment is a popular spring loaded retaining attachment that provides free movement for abutment protection without requiring an abutment crown. The IC attachment requires a 180 degree reciprocal lingual arm. The attachment consists of a male anchor and female inlay. It is made of a stainless, chrome-alloy like those used for casting partials. It will not tarnish or corrode, and when properly installed, will not malfunction even after years of wear. Other benefits include no pulpal involvement, no gingival retraction before impressions, easy to adjust at the chair, and this is a reversible procedure.

IC Attachment

Universal Male: 5.2mm length, 2mm 1 ,mm nose Universal Female: 2mm 0.8 ,mm deep

DSE HingesBio-Mechanical Considerations in the use of Distal Stress Equalizers (DSE) in Partial Denture RestorationThe DSE Hinge is intended for use on bilateral clasp retained free end removable partial dentures to reduce loading or torquing of abutments. The small size is easy to work with and eliminates multiple inventory requirements. The unique design provides for easy freeing after casting and provides total lateral stability. For patients, it allows patient comfort and abutment protection by allowing independent unilateral function eliminating torquing leverage on the abutments on the nonfunctioning side. The miniaturized size allows utilization in short vertical spaces and provides for good esthetics.Quantity Rates at 12, 24, and 100

DSE Hinges

Mays Unilateral AttachmentDesigned specifically for the unilateral distal extension, the Mays is the first attachment with a lingual locking arm. It can not be dislodged, but yet is easily removed for patient hygiene. 3mm vertical required. Specify Upper Left/Lower Right, or Upper Right/Lower Left. Does not require a lingual or palatal arm. No cast chrome framework required or soldering; the male portion casts with the crowns. No parallelism is necessary, even on bilateral cases. Mays Unilateral

Sphero RetroFit KitIdeal for replacing worn extracoronal attachments, such as the

ERA or Ceka. Kit of 2 with all necessary components.


Bar systems may be utilized for overdentures, removable partial dentures, and implant prosthesis. Bars may be rigid or resilient, permitting free movement of the prosthesis to direct forces away from the retaining abutments to the supportive bone and tissue. Bar systems are generally in one of three types: 1. Prefabricated Dolder type 2. Plastic Hader type 3. Round Clip" bars and riders The shape of the bar is indicated by the amount of room availab