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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.
THREE male keeper options:
30, 45,
and 60º patterns allow for improved
hygiene-- open embrasures and light gingival contact.
THREE 2.25mm Ø sphere options:
- Plastic castable sphere pattern with cup bur
- TI bondable sphere
- TI thread-in sphere
THREE female retention options:
- White for reduced retention
- Yellow standard retention
- Orange for increased retention
Audible *click*
for patient security when prosthesis is engaged.
Requires:
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Clix 1271 and 1281 |
Clix 1276 |
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5.10mm tall |
5.30mm tall |
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3.40mm Ø |
3.40mm Ø |
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Preci Sagix
Sagital ball attachment with segmented female for partial denture and overdenture bar constructions.
- Two sizes 1.7mm Ø and 2.2mm Ø
- Compatible with Bredent VKS-SG
- Audible snap for patient security and increased retention
- Prefabricated machined metal cast-to males provide consistent, accurate, reliable restorations.
- Unique female contacts a greater surface area of the sphere for increased retention and stability.
Requires:
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1.7mm mini |
2.2mm standard |
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3.10mm tall |
4.10mm tall |
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3.10mm Ø |
4.20mm Ø |
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Ceka Attachments |
Ceka Revax
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Ceka Revax
The True Precision of the 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 metal retention
component. The three angulations allow the technician to design the case to fit the
patient's needs.
Requires:
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M2 Revax |
M3 Revax |
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3.80mm tall |
4.35mm tall |
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3.40mm Ø |
4.40mm Ø |
Ceka Classic
Requires:
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M3 Classic |
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3.55mm tall |
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4.30mm Ø |
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Preci Vertix and Vertix "P"
Preci Vertix Instructions
Instructions for Pre-Cast
Hood
Case Study using Preci Vertix
P
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.
The 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.
Requires:
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Vertix w/metal housing |
Vertix w/castable housing |
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3.00mm tall |
3.00mm tall |
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4.10mm Ø |
3.30mm Ø |
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Preci Vertix "P"
Preci Vertix
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Preci Vertix
AT
Adjustable extracoronal slide attachment. Burn-out plastic
male or cast-to IRAX 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.
Requires:
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Vertix AT |
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4.40mm tall |
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2.60mm Ø |
May be reduced by 1.00mm at tissue side. |
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Preci 52
The PRECI-52 spherical attachment is a small, universal joint connector allowing vertical and hinge movements.
Two different types of attachments are available: PRECI-52 U (Mini) and PRECI-52 S (Standard).
The female is made of burn-out plastic for casting with extremely hard alloys. The stainless steel male is a reversed spring-loaded connector allowing adjustable retention.
Compatible and may be used to service existing ASC52 cases.
Requires:
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Preci 52 Mini |
Preci 52 Standard |
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3.15mm tall |
3.40mm tall |
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3.15mm Ø |
3.40mm Ø |
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Compatible with Mini-Dalbo and Swiss Mini attachment.
| Extracoronal Adjustable Resilient Distal Extension Attachment.
Delrin castable male with Stainless Steel female.
Space Requirements:
- 3mm vertical
- Male 2.5mm ø
- Female 3.5mm ø
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CSA
CSA Instructions
1.8mm Castable Spherical Attachment for extracoronal partial
dentures and overdenture bars.
Requires:
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Short Male |
Tall Male |
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3.10mm tall |
4.50mm tall |
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4.30mm Ø |
4.30mm Ø |
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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. Requires:
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OSO DE |
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5.2mm (may be reduced to 2.50mm) tall |
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2.00mm Ø |
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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.
Maximum of three teeth replaced on unilateral cases.
Requires:
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Mays |
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3.00mm tall |
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2.00mm Ø |
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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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ZAAG mini 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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