Systematic procedure
Fig. 1: Planning and effects
A single biocompatible material does not guarantee biocompatible dental restorations. High-quality, biocompatible dental restorations require thorough planning.
The bredent casting technique takes all essential components of the combination "Patient – Materials – Production" into consideration.





Systematic procedure
Fig. 2: bredent quality
The bredent casting technique is based on the commitment to quality and the requirements of a responsible patient for biocompatible dental restorations under the aspect of long-term biocompatibility.








Systematic procedure
Fig. 3: Your advantages

■ Sprues can be universally used for all alloys
■ Volume compensation results in easy-to-polish casting without shrinkage cavities
■ Special muffle shapes allow ideal positioning of wax objects
■ Deformation-free spruing and investing reduce the fitting time
■ Few sprues for reduced material usage
■ Structured book "bredent casting technique" for dependable use


Systematic procedure
Fig. 4: Development
The bredent casting technique is a complete system.
It combines know-how and materials.
The dental technician is enabled to achieve reproducible, homogenous and patient-compatible results.

» PDF: ► Diagram Material symbiotic [1265 kb]











Systematic procedure
Fig. 5: Laboratory situation
The bredent casting technique is matched with the respective laboratory situation to meet the requirements for high-quality dental restorations.









Systematic procedure
Fig. 6: Basic requirements
To be able to successfully apply the bredent casting technique, competence in the systematic procedure (according to Andreas Sabath).

The necessary know-how can be acquired either in the
"Manual "bredent casting technique"

Model fabrication
Fig. 1: Thixo-Rock class IV super-hard stone

The low expansion is just 0.06 % after two hours and the limit is 0.08 %. This stone allows reproduction of all details of the original situation and the fabrication of highly accurate dentures. Thixo-Rock is available in brown, ivory and grey.

Information on ordering
» Thixo-Rock class IV super-hard stone


Model fabrication
Fig. 2: Control of expansion
Control of the expansion of a plaster model.

Information on ordering
» KoEx Measuring Device








Model fabrication
Fig. 3: Duplicating system
The duplicating technique is the major element and the basis for highly accurate duplicates. The stable plastic components of the bredent duplicating system ensure unsurpassed precision when preparing duplicates and reduce errors.

Information on ordering
» Duplicating system






Model fabrication
Fig. 4: Bresol N for the one-piece casting technique
Perfect control of the expansion of brevest M1 in different areas of an investment model thanks to the use of Bresol N investment material liquid – required for accurate secondary structures in the one-piece casting technique.

Information on ordering
» Bresol N




Model fabrication
Fig. 5: Optimal mixing
Homogeneous mixing with the ecovac mixing system. The three-dimensional ecovac mixing spiral in conjunction with the smooth surface and the conical shape of the bottom of the ecovac mixing cup allows to take up all the material inside and to mix it in horizontal and vertical direction.

Information on ordering
» ecovac mixing system

» PDF: ► Optimal mixing [874 kb]

Preparation for casting
Fig. 1: Linear preheating

» PDF: ► Übersicht Lineares Vorwärmen [1479 kb]









Preparation for casting
Fig. 2: Bar casting
When preparing sprues, it must be ensured that the sprues are directed to the melting reservoir via the center or heat. A horizontal bar which is placed in the center of the casting ring serves as a melting reservoir.

Information on ordering
» Fleece liners
» Steel rings



Preparation for casting
Fig. 3: Attaching the rinsing head
Correct dimensioning of the sprue/s to be attached and sufficient thickness of the sprue/s and the rinsing heads are essential for homogeneous dental casting and ensure rapid flowing in.

Information on ordering
» Rinsing heads




Preparation for casting
Fig. 4: Casting with sprues
If a gold or precious metal bonding alloy is used for casting the framework, the design shown in the pictures is sufficient. Crystallization cooling fins or a second sprue are not required.

Information on ordering
» Steel ring- / Silicone ring-muffle assortment






Preparation for casting
Fig. 5: Crown
When using NPM alloys for all cast crowns or bridges, sectional investing is recommended to improve the surface of the casting.
The same applies to providing crystallization cooling fins – their use eliminates errors of investing or porosities in the casting.




Preparation for casting
Fig. 6: Bar restorations
A correctly wax-up bar structure needs to have suitable sprues to ensure perfect casting. It is essential to obtain rapid and uniform filling of the mould with the alloy.

Information on ordering
» Wax patterns cut to size, rods





Preparation for casting
Fig. 7: CoCr restorations
The sprues must be attached in a way to ensure that they are directed to the casting funnel via the center in the investment muffle.

Information on ordering
» Casting funnel
» Sprues
» Investment materials

Overview – casting techniques
Fig. 1: Flame centrifugal casting
The alloy is melted with the flame and fed into the cavity with the centrifuge arm.

■ Unsuitable: Blow torch, welding torch
■ Suitable: Melting torch






Overview – casting techniques
Fig. 2: Centrifugal casting with crucibles
The alloy is melted with the resistance heating and transported/fed into the cavity of the casting with the centrifuge arm.









Overview – casting techniques
Fig. 3: Induction centrifugal casting
The alloy is melted with the resistance heating and transported/fed into the cavity of the casting with the centrifuge arm.









Overview – casting techniques
Fig. 4: Resistance-heated vacuum pressure casting
The alloy is melted with the resistance heating and flows into the cavity (oxygen-reduced atmosphere); residual filling is achieved by pressurization.









Overview – casting techniques
Fig. 5: Induction vacuum pressure casting
The alloy is melted with the induction heating and flows into the cavity (oxygen-reduced atmosphere); residual filling and homogenization during the solidification process are achieved by pressurization.

Biocompatibility
Fig. 1: Careful planning
High-quality restorations are based on careful planning and fabrication. If the patient does not have any complaints over an extended period, our restorative work has been highly successful.







Biocompatibility
Fig. 2: Analysis of the oral situation
The first step in the fabrication of biocompatible restorations is the analysis of all materials involved in the fabrication. Interaction with existing materials, defects/deficiencies due to incomplete repair, medication especially for chronically sick persons or environmental pollutants affect the compatibility considerably. Initial errors may already be made during material tests if material samples/specimens are prepared in an incorrect manner.












Biocompatibility
Fig. 3: Perfect fit
Biocompatible restorations require perfect fit, homogeneous casting structure, suitable connection technique and surface treatment and perfect bonding of the veneer. Safe and dependable process parameters are essential because control at a later time would involve the destruction of the material.





Biocompatibility
Fig. 4: Preconditions for well-being
A patient will only accept the integrated restoration if it contributes to his well-being. Quality, esthetics and bite situation are the basic pillars and are maintained by proper oral hygiene and nutrition and protect the patient's health.

The manual for the user
Fig. 1: bredent casting technique
The „bredent casting technique“ loose-leaf folder (Dental casting, accurate – homogeneous – compatible) is intended to be used as a manual by the user. The folder‘s purpose is not to „transform“ the dental technician into a material scientist or metallurgist using scientific data and chemical formulas. It is rather the objective of the folder to simplify reliable scientific data and experience for the dental technician as a user.

Information on ordering
» Loose-leaf folder: bredent casting technique