22.1 Wirobond® MI Mini bar system
22.2 Mini gold bar abutment Product details
Completion / Integration
Mini gold bar abutments are screwed directly onto the implant and are used exclusively to make bar constructions due to the lack of anti-rotation protection. A model with an artificial gingival mask is required when using the abutment. Mini gold bar abutments are not suitable for making single tooth restorations or for direct bonding of ceramics. We recommend using a 3Dolder® bar joint attachment Micro / Macro-Gold. A laser (e.g. BEGO LaserStar T Plus) is required for the work. We recommend using a base made of light-curing resin for bite taking and set-up in order to have a stable base and the option of temporarily fixing the female parts firmly with a self-curing resin (autopolymer) for trial fitting.
Follow the manufacturer’s general instructions. Trial fitting of the frame with set-up denture is recommended. For trial fitting of the prosthesis, cut out the bar in the denture base. When using the round bar system PRECI-HORIX: place the green space maintainer on the bar, and place the metal housing on top. Block out underneath the bar. Polymerise the metal housing into the plastic for accurate seating of the space maintainer. Then insert the yellow PRECI-HORIX plastic rider into the metal housing. For further information, go to: www.ceka-preciline.com The Mini prosthesis screw is used for final placement of the restoration in the patient’s mouth (torque: 25 Ncm) (tool: hexagon screwdriver 1.25 mm).
The Mini gold bar abutment is made of a gold-platinum alloy with a melting range of 1400 – 1460°C. For this reason, a high-gold (at least 75% Au) alloy of the following classes must be used if casting directly onto the Mini gold bar abutment. Metal-to-ceramic alloy: DIN EN ISO 9693 standard; cast alloy: ISO 1562 standard, type 4. The cast alloy used should meet the following minimum requirements: modulus of elasticity > 90,000 MPa; ductile yield > 7%; elongation limit > 500 MPa; casting temperature < 1280°C; Vickers hardness > 220 HV 5; preheating temperature ≥ 850°C. We recommend using Bio PontoStar® XL or Bio PontoStar® (BEGO). It is not possible to use alloys with reduced gold content or non-precious alloys.
Set-up Make a set-up according to functional, phonetic and aesthetic aspects. Recess the implant region when shaping the base.
Inserting the Mini gold bar abutment Screw the Mini gold bar abutment to the implant analog with the Mini technician screw (slotted screw) (tool: slot screwdriver).
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Dolder® is a registered trademark of Prof. Eugen Dolder, formerly Director of the School of Dentistry at the University of Zurich, Switzerland.
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