Direct Filling Materials or Resin Bonded Ceramics
These are, as the name implies, a ceramic filler held together in a resinous base. These are technique sensitive and not desirable in all applications. After the caries (decay) has been removed from the tooth, the exposed surface is conditioned with a combination solution of dilute phosphoric acid etchant and bonding agent. This causes the tooth to become acceptable to the resin. The material is cured and followed by the application(s) of the “filling” material. Depending on the depth of the cavity, one or more applications might need to be placed. After each layer a bright LED light is directed to the material to cure it. After the last layer has been applied, the surface is formed as needed, a coating is applied, to assure a complete cure of the surface, and the curing light is applied again. When those steps are completed the bite is checked and adjusted as necessary.
Indirect Dental Restorations
In circumstances where a direct restoration is not suitable; some of these reasons are: strength; cosmetics; durability; size of repair; location (access); preference. Indirect restorations, made in a laboratory under more ideal conditions are used. These usually provide greater durability and a much higher level of fit. During the preparation of either of these types, a laser or ozone may be used to sterilize the exposed cavity walls. There is an added benefit of tooth desensitization also.
Some types of Indirect Restorations are:
Our practice is geared as a “non-metal” practice. The above examples are primarily ceramic based however, at times a 98% gold alloy is used for the treatment when needed.
We have a book available at the office for your further education, Solving the Puzzle of Mystery Syndromes by Mary Davis. The book is a compilation of real life stories of victims of mercury toxicity overload.