Questions and answers about the new ANKYLOS, XiVE and FRIALIT CAD/CAM bar prostheses and implant bridges

Before sending
Sending
CAD/CAM Center
General questions
Materials
After delivery

Before sending
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What do I need to send?

  • Plaster cast 
  • Any required original abutments
  • Full wax-up or set-up (e.g. plastic teeth set in wax)

Do I need to order the occlusal screws as well?
No! The screws required for the ANKYLOS, XiVE, XiVE TG and FRIALIT implant systems are included by the DENTSPLY CAD/CAM Center and added to the invoice.

Do I need to use a special type of plaster?
No. A high-quality plaster with a very low expansion improves the accuracy of the complete prosthetic product, such as class IV plaster.

Do I need to manufacture the master cast with a gingival mask?
Only if the implants are placed so deep that it would otherwise be impossible to guarantee accurate positioning of the abutments.

Can I use different retaining elements?
Yes! Special requirements can be discussed directly with the technicians in the DENTSPLY CAD/CAM Center.

Is there a limit on the number of implants?
No! Because the size of the blanks are individually defined, even complex cases can be handled.

Can I order CAD/CAM structures for other implant systems?
Yes! The connection to the abutment or implant must be at the gingival margin and it must be fixed with a transocclusal retaining screw.

How can I make sure that the model and clinical situation match before ordering?
A key fabricated on the model (plastic bar) can be test-fitted in the patient's mouth (Sheffield test) before sending the order for the DENTSPLY Friadent CAD/CAM restoration.

Sending
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How long does it take until I have the case back?
The customer will receive a design proposal based on the scanned cast and full wax-up or set-up by e-mail no later than 48 hours after receipt by the DENTSPLY CAD/CAM Center. Once the customer has approved the design in writing it takes a maximum of 10 working days until the model with CAD/CAM structure is received.

How can a set-up or wax-up be sent a long distance on a hot summer's day?
A harder type of wax should be used in summer to prevent distortion of the full wax-up or set-up. The use of a plastic base in the full wax-up or set-up will add additional stability.
The set-up or wax-up is only for estimating the space required. The accuracy of the construction does not depend on the full wax-up or set-up. Slight distortion of the wax is normal and can be neglected. The "outline" of the full wax-up or set-up is scanned simply to define and assess the optimum design of the structure
.

CAD/CAM Center
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Who will send me the design proposal? Who will modify it for me if necessary?
The proposal comes directly from the CAD/CAM technician at the DENTSPLY CAD/CAM Center who designed the special case. The same technician will also modify the virtual construction or design proposal if required.

Do the CAD/CAM technicians speak German?
Yes!

Do the CAD/CAM technicians in the DENTSPLY CAD/CAM Center have any dental knowledge?
Yes! The design proposals are prepared in accordance with the information on the order form and in accordance with prosthetic and static requirements.

Can the proposal only be received electronically?
Yes! The design proposal is sent electronically as an e-mail attachment.
Special software is not required to view the proposal, because the viewer is sent with the design proposal. Consultation on the design is by telephone
.

General questions
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Can I use my own scanner?
No. The scanner in the scanning center is designed to conform to the complete production process.

What is CAD/CAM?
CAD: Computer Aided Design (preparation of shapes using a computer)
CAM: Computer Aided Manufacturing (fabrication of shapes with a computer-controlled milling system)

What are the advantages of CAD/CAM?
The problems with fitting that are encountered with conventional manufacture (waxing, casting) are not an issue, because the structures are industrially manufactured and milled from absolutely pure material. The material does not contain any additional substances, porosities or air inclusions. The material has a much lower oxidation in comparison with classical cast material.
The perfect fit is retained throughout even after ceramic veneering. Subsequent separation and soldering of the structures is not required
.

Why do I need to fix bridges with occlusal screws?
The advantage of screw retention is that the structure can be removed without risk at any time giving you the following additional advantages:

  • reparability (e.g. the veneering) 
  • expansion or modification (e.g. after implant loss or re-implantation or additional implants) 
  • direct and uncomplicated access to the implant for hygiene during a recall examination  
  • prevention of the risk of periimplantitis by cement residues  
  • direct and uncomplicated access to the implant for treatment of peri-mucositis and periimplantitis

The main disadvantage of definitive cementing is that it can damage the superstructure. Veneering flaking off, distortion of the framework, damage to the interface to the abutments are only some of the possible risks.

What do I do if I don't have an internet connection?
You can sent the proposal printed on paper by mail, but this does take more time.

Do I need special software to receive the data?
No! Any standard e-mail program is good enough.

Do I need special hardware?
No! A standard PC with the standard components is sufficient.

Do I need particularly fast data transmission?
No! An ISDN line or an analog modem should be good enough. The attachment is about 7 MB. Transmission over an ISDN internet connection will take 10 to 15 minutes and somewhat longer with an analog internet connection.

Will I need to pay for the software?
No! The software is free. It does not need to be installed or registered.

What is E.S. Healthcare?
DENTSPLY acquired the high-tech company E.S. Tooling in July last year. E.S. is the initials of the Eric Schildemans, the former owner. E.S. Tooling manufactures high-tech instruments for the aerospace industry and E.S. Healthcare has also been supplying implant superstructures manufactured by high-quality CAD/CAM processes for the dental profession since 1996. The company is ISO 13485-certified and is based in Hasselt, Belgium.

Materials
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Do I need to use a special type of plaster?
No. A high-quality plaster with a very low expansion improves the accuracy of the complete prosthetic product, such as class IV plaster.

What is the exact composition of the CoCr alloy?
Cobalt: 54.1%, chromium: 20%, tungsten: 16.4%, iron: 7.5%, silicon: 1.5%, manganese: 0.3%, niobium: 0.2%

What type of titanium is used?
Titanium is milled and supplied in grade 4 as standard. This type of pure titanium allows very delicate and thin-walled constructions.

What is the exact composition of grade 4 titanium?

Titanium: 98.555%, carbon: 0.08%, oxygen: 0.40%, nitrogen: 0.05%, hydrogen: 0.015%, iron: 0.5%, other: 0.4%

After delivery
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What can I use to seal the screw channel?
For final delivery or long-term recall: first place a cotton pellet directly on the screw head, then gutta-percha and finally the closure with light-cured or self-curing composites.
For temporary delivery or short-term recall: first a cotton pellet, then Cavit, Fermit or similar. The important factor is that the material can be removed easily, but also has a specific strength and impermeability.

Do I still need a test fit of the framework on the patient?
A test fit on the patient before veneering or completion is recommended, just as with conventional work.

More questions on CAD/CAM

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