Crowns and Bridges  

There are two ways in making crowns and bridges. 

  • Carving the product after the wax up
  • Wax up without having to shape the product and carve down excess material

The more experienced lab technicians have the skills and craftsmanship to make a completed product through wax up only. This saves the lab in excess material expense, time and labor. More importantly to the dentist receiving the product the function and form are superior. Another by-product of wax up only procedure is that the cost savings can be passed on.

Different Wax Up Techniques

  • Dr. P.K. Tomas developed the Cone Technique Wax Up which emphasizes the functional form of teeth. This is the most commonly used method among many dental technicians today.
  • N.A.T Wax up was developed by Deiter Schulz in Germany. This method pursued anatomical aspects to the Cone Technique Wax up. The better dental technicians are learning N.A.T through seminars.
  • Finally, the most advanced Wax up technique is called N.F.R. While the N.A.T method is based on the original anatomy of the patient, N.F.R considers the wear rate of the patient’s teeth so that the end product has a more natural and aesthetic look to it.

Dr. Lee utilizes the N.F.R Wax Up techniques on all gold and porcelain crowns.

With over nineteen years of experience as a lab technician, Dr. Lee has used almost every kind of composite resin material in building various prosthetics. Over this period, it was found that Tecerra was without a doubt the strongest material. A strong characteristic of this material is that it simulates the same strength as natural teeth in abrasion and fracture resistance. Our lab will use Tecerra for our composite resin. The various uses are:

  • Inlay, Onlay
  • Laminate
  • Single Crown
  • Three unit bridges
  • Konus and Telescopic crown facing
  • Facing on outer crowns

The initial polymerization of Tecerra is accomplished through a light cure process.

The final polymerization is completed by pressurization and heating in water.