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EXTRACORONAL
ATTACHMENTS FOR REMOVABLE PARTIAL DENTURES |
Extracoronal
precision attachments for removable partial dentures are recommended when:
- Less tooth reduction is required. Retaining abutments are small to avoid over-contoured intracoronal attachment abutments and/or pulpal exposure.
- 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.
- 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 Clix
A new idea in
removable partial dentures, overdentures, and
implant bars.
30, 45,
and 60º 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 Ø male ball.
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Ceka Attachments |
Ceka Revax
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Ceka Revax
Ceka Classic
The 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
patient’s 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.
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Preci Vertix
Preci Vertix
"P"
Preci Vertix Instructions
The 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.
Instructions for Pre-Cast
Vertix Hood
Case Study using Preci Vertix
P
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Preci Vertix "P"
Preci Vertix
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Preci Vertix
AT
Extracoronal 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. |
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CSA
CSA Instructions
Castable Spherical Attachment for extracoronal partial
dentures and overdenture bars. |
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O-SO
Distal Extension
View 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
free-end and bounded partials. May be used in conjunction with other
attachments.
The metal retainer ring is sold
separately. |
O-SO Distal Extension Attachment
a
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Universal
IC Attachment
The 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.
- Universal Male: 5.2mm length, 2mm Ø, 1mm nose
- Universal Female: 2mm
Ø, 0.8mm deep
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IC Attachment
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DSE
Hinges
Bio-Mechanical
Considerations in the use of Distal Stress Equalizers (DSE) in Partial
Denture Restoration
The 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
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DSE Hinges
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Mays
Unilateral Attachment
Designed 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
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Sphero RetroFit Kit
Ideal for replacing worn extracoronal attachments,
such as the ERA or Ceka. Kit of 2 with all necessary components. |
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