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. Bars provide more stability and retention than studs with the additional benefit of abutment splinting. Bar systems are generally in one of three types:

1. Direct Retainers, such as the Hader or Dolder bar systems

2. Incorporated into the bar, such as Locator or Clix bar attachments.

3. Offset attachments, such as the Plunger Loc, Sagix, or Vertix.

The shape of the bar is indicated by the amount of room available, by the shape of the alveolar ridge, and the type of construction. Do not engage labial soft tissue undercuts with the denture base flange, as this will alter the path of insertion and cause excessive wear and servicing requirements.



Hader Bar

The Hader Bar and rider system is the most popular of all bar systems due to its economy and simplicity.

The system allows the prosthesis to rotate around the bar.

Hader bars provide both stability and retention.

Common application is processing the Hader Metal Housings into the denture utilizing the Hader Processing Spacers, and then using one of the four grips of plastic Hader clips in the metal housings.

Relines or making a new prosthesis is made easy by using the Hader White Delrin Analog or Aluminum Analog.

Choose either the thin (0.2mm) metal housings for accurate seating of the plastic clips or the new Alignment Housings.

4 grips of Hader clips–the reduced retention white, standard retention yellow, increased retention red, and the salvage Blue clips for worn bars.

When utilized with the metal housings, adjusting retention for the patient is simple–remove the present clip and insert the proper retention clip.


Ackermann Clip Technique

The Ackermann clip is an universal precious metal clip or rider that will fit the Hader, Dolder, and Round bar. The Ackermann clip features adjustable retention, easy patient insertion and removal, while requiring less vertical space due to its horizontal or vertical retention tangs.

Due to its short (3.6mm) length, the sleeve may be positioned on the bar even in a deep narrow trough. No soldering of the clip is required.

The Ackermann BL retention tangs provide firm retention in acrylic and require no additional vertical space.

The retention cylinders on the Mesial Distal clip are easily bent to the preferred position.

Ackermann Clip (Buccal-Lingual retention)

Gold or Stainless Steel

Ackermann Clip (Mesial-Distal retention)

Gold or Stainless Steel

ackermann gold 200

ackermann bl

ackermann bl 200ackermann md

Preci-Bar (Dolder) Bar

Preci Bar Instructions

The Preci (Dolder) Bar is produced in a precious alloy or as a plastic pattern.

The bar and sleeve attachment are used for retaining removable partial dentures and overdentures.

The pear or oval shape is used for a resilient prosthesis providing vertical and rotational movements.

The ‘U’ shape is for a rigid, or non- resilient, prosthesis.

Dolder Bar


Precision Design and Manufacturing Center

The PREAT Design and Manufacturing Center will assist you in designing your more complex and difficult implant fixed and removable prosthetics.

Overdenture bars, bars with attachments, fixed complete “screw-down” dentures, and bridge frameworks are available in Titanium and ceramic chrome cobalt for all major implant systems.

Preci Clix

2.25mm Ø sphere.

Audible clicking sound for patient security.

Castable sphere, bondable TI sphere, or threaded TI sphere.

Females may be paralleled using the Clix Female Mandrel.

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Locator Bar Attachment System

Locator Implant Bar Instructions

The new LOCATOR Bar Attachment System contains the same self-aligning feature, superb retention, long lasting durability, and low attachment profile that you currently enjoy with our top selling LOCATOR Attachments. Now these benefits are available for your immediate use when the splinting of implants is required with a bar for added stability.

Laser weld, cast-to, and thread-in options.

Universal Plunger Loc Attachment

A titanium locking pin attachment designed for resilient or rigid retention on implant bars, telescopic, or partial denture constructions.


Swiss Loc Universal Plunger Loc Lew Passive Attachment

Preci Sagix

Sagital ball attachment with segmented female for implant bar applications. The male is available in plastic and cast in a hard alloy, in pre-fabricated metal and cast-to with any alloy, or also as a threaded male with a special cast-on base ring.

Consistent, accurate, and reliable.

Sagix Bar bredent vks balls


CSA Instructions

Castable Spherical Attachment for extracoronal partial dentures and overdenture bars.

csa bar attachments

Preci Vertix and Vertix “P”

The Preci Vertix and Vertix “P” provides for hinge and vertical movements. The Vertix is a very simple yet popular system that provides patient comfort and abutment protection.

vertix case

Ceka Revax Implant Bars

Prosthetic Concept of Resilient Construction

Prosthetic Concept of Rigid Construction

ceka bar case

Laser System

  • Locator for titanium and precious alloys
  • CSA for titanium
  • Preci Vertix for titanium
  • Preci Clix for titanium and precious alloys
  • Preci Profile TI bar structure
Round Bar Round Bar Instructions

A round bar is useful in situations where the bar must be bent to accommodate the ridge anatomy, or in close-bit situations.

8° Tapered Plasti-Wax Bars

Clean burnout plasti-wax bar patterns for use with quick set investment. Ideal for implant supported bar overdenture constructions. Package of 4.

Castable Bar Patterns–all shapes

The castable plastic and plasti-wax patterns are available in profiles of the Hader and Round bars to facilitate the use of non-precious alloys and direct casting. The plastic wax burnout patterns are recommended when using a fast burnout technique.

All are available in packages of 4 to facilitate the shaping and contouring of bars to the individual anatomy.

The bars are approximately 6 cm long. The diameter is 1.8 mm for Hader and round bars.

Very economical and Easy to work with!