Taking a Dental Impression

Attaching Veneers

Crown and Bridge

Full and Partial Dentures

Casting of Metal for Crown and Bridge

Cast Metal for Dentures

Implant Work

Xtreme Laminated Mouthguards

Castings for Crown and Bridge

Sydney Oral Design has the equipment, technology and expertise to complete castings in chrome and gold alloys, and also in pure titanium. Metal casting is integral to much of modern dentistry as a key component of individual crowns, providing the necessary strength to dental bridge work, and to add rigidity to a denture. The process of producing metalwork as part of your dental solution takes great skill and experience and should only be undertaken by an appropriately qualified dental technician. 

One of the Lab's Casting Machines

Before reading on, refer to the page explaining dental impressions.

The process of producing your crown follows this pattern:

• The dentist prepares a dental impression and sends it to the lab

• A removable die stone model is then created and attached to a plaster base by metal pins. The model is cut/segmented tooth-by-tooth to allow the technician easy access to each tooth

• A wax framework for the crown is produced from the model. It is then removed from the die and placed in a casting ring filled with investment material that resists heat and remains free of expansion and distortion

• The casting ring is placed in a burn-out furnace and the wax is eliminated

• The casting ring is then placed in a centrifugal casting machine (gold and chrome alloys) or a pressurized casting machine (titanium) and the molten metal forced into the space left by the eliminated wax in the investment material

• A torch provides the heat-source for the centrifugal machine, a tungsten-electrode is used  for titanium

• When cool the investment is removed leaving a coping or framework for the crown itself. The coping acts as a ‘thimble’ that fits perfectly onto the dye stone model of the original tooth as prepared by your dentist

• Several layers of porcelain are applied by brush to the metal core/coping recreating your natural colours and then fired in a porcelain furnace. The porcelain bonds to the metal coping and forms a glaze or enamel similar to a natural tooth.

This process takes a number of days, and the finished product should be precisely what you and your dentist requested. The colour, texture and size of the crown(s) will be as near to perfect as possible. The sign of a skilled and accurate technician is the replication of the original tooth or the improvement you were promised. A key test is that the additions to your dental anatomy should be a perfect fit and help improve the character of your smile. We are justifiably proud of our results at Sydney Oral Design. Ask our clients, or better still, take a look at their satisfied patients. 

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