The method of abutment duplication was developed by Shendall Tec center(Israel) and has received endorsement of leading specialists in implantology.
Analoyd system of abutment duplication was specially developed for application of this method.
Analoyd system includes:
1. Innovative analogs “LA” for popular implant systems.
2. Special duplication device – “Dupbox”.
3. Duplication material – “Emprossil”.
4. Material for the duplicate – “Compoloyd”.
5. Accessorial set of screws.
6. Set of rubber retention rings.
7. Set of nylon retention caps.
8. Wrench for inserting and extracting of Analog “LA”
9. Wrench for screw fixing.
The standard screw that attaches abutment to analog LA is replaced by a screw with elongated body.
Space between the abutment shoulder and the outer edge of the analog platform is filled with wax.
Elongated body of the screw is, in effect, a channel through which the material for duplicate will be filled in.
Analogs LA with attached custom abutments are inserted into special sockets of the lower part of duplicating box
At the base of the box there are openings through which spherical analog projections protrude.
In the upper part of the box there are “terminals” for each abutment that needs to be duplicated. Terminals have outlet openings.
When the upper part of the box is placed on the lower, elongated screws appear in the openings.
A small quantity of duplicating material is applied to the abutments in order to avoid formation of air pockets.
Duplicating material is injected into the terminals and then the upper part of the box is placed on the lower part.
After hardening of the silicon material the fixing screws are unscrewed,
the upper part of the box is taken off together with the formed silicon casings (the analogs remain in sockets in the lower part of the box) and abutments are extracted.
Then the upper part of the box is placed on the lower one.
Through the casting channels that were formed in the silicon casings in those places where the fixing screws were, self-curing composite material is injected until
it begins to come out through the outlet openings at the base of the box, where the analog spherical projections are.
After hardening of the composite material
the upper part of the box is taken off,
analogs with abutment duplicates are taken out of the lower part of the box, casting channels are trimmed, and analogs with abutments are inserted into the model.
Extensive experience of using analog LA and the offered duplicating method allow to speak about high degree of conformity of the duplicate with the original.
Therefore, from laboratory to the clinic goes a model with duplicates on which the baseof the frame of the future prosthetic structure is mounted, as well as temporary bridge and permanent abutments (for convenience, permanent abutments are mounted on a special matrix).
After abutments are installed in the oral cavity and base of the frame is successfully fitted, abutments can be permanently fixed with the help of ratchet wrench, temporary bridge prosthesis mounted on them, and the model with duplicates and base of the frame can be sent to the laboratory to continue work.
All subsequent fitting in the oral cavity (regardless how many) will not be accompanied by removal of abutments from the oral cavity.
The conclusion is that the use of analog LA with application of abutment duplication method is helpful for the patient, the dentist, and dental technician.