Atlantis Dental Laboratories

Crowns and Bridges

Porcelain fused to metal is still the most common restoration technique today.
The Atlantis Dental Lab uses the highest quality alloys and porcelain.
Metal: Our most popular alloy contains 51.5% gold and 38.5% palladium. We also offer an alloy containing 87.3% gold for a restoration made entirely of gold.
At your request, we can also use the metal of your choice.

Porcelain: Our favourite porcelain has always been Vita. Its reputation is well established. We currently use VITA VMK MASTER and Vita VM13. Both materials have interesting aesthetic qualities and quality colouring. Whether for crowns or bridges, the Atlantis Dental Laboratory is able to provide the highest quality castings, with precise marginal fit in the metalwork, and aesthetic and functional refinements in the porcelain.

It is possible to choose the shade of the porcelain, because our intention is to satisfy both the dentist and the patient.

All-Porcelain Crowns

The goal is very simple: to produce a malleable ceramic that has both the appearance of a natural tooth and exceptional durability. The results are simply revolutionary!

Generic-Pentron, the pioneer in ceramics, has developed 3G. The patented technology of 3G Esthetics allows dental laboratories to produce compliant, high-strength, lithium disilicate glass-ceramic restorations. 3G brand porcelain is recommended for anterior and posterior three-unit bridges as well as for single crowns.

Note: The all-porcelain OPC 3G crown does not contain any crystals and is extremely gentle on the opposing dentition.

Preparation of anterior teeth
Single crowns and bridge abutments:

• Minimal tooth reduction should be 1.0 to 1.5 mm axial and 2.0 mm incisal-occlusal. Finish the preparation with a shoulder (angle of 90 to 105 degrees) with a slightly rounded gingivo-axial internal angle.
• Place the margin at the top of the gingiva. Round off any point or angle. Remove undercuts and prepare parallel walls to form the path of insertion.
• The occlusal reduction must follow the anatomy of the tooth, to obtain an excellent reproduction of the occlusion and an even thickness of porcelain. This contributes to the strength of the restoration.

Preparation of posterior teeth
Premolar crowns and bridges, as well as single crowns for molars only.

As you know, most of the chewing force is perpendicular to the margin. This is why a 90-degree margin is mandatory. A slight chamfer is acceptable, but the 1 mm depth and rounded 90-degree angle must be respected.

Ceramic Crown (Zirconia)

Zirconia ceramic is the material closest to the aesthetics of a real tooth. The alternative is a porcelain-fused-to-metal crown (the metal can be a precious metal such as gold). The advantage of a ceramic crown is that it is more translucent and does not reveal a grey line at the base of the tooth over time. In addition, it contains no metal, which is an advantage for avoiding allergies.