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Zielenbach58 · Thu Jan 31, 2008 5:10 am Restorative Defects

Restoration of tooth defects can be divided into two major categories including those which have no tooth structure background and those which have a tooth structure background. Defects include areas of loss, apparent loss or incorrect color of tooth structure. Restorations which have no tooth structure background show darkness from the back of the mouth causing composites to look darker. These defects occur as a result of acute trauma such as a blow to the mouth, chronic trauma such as attrition, caries, and congenital abnormalities. The amount of darkness depends upon the translucency of the composite material. Situations which present with a tooth structure background may show the color of the remaining tooth structure through the material. These defects occur as a result of acute trauma, caries, chronic trauma such as attrition and abrasion, and congenital abnormalities. The effect of remaining tooth structure as a background will vary with the depth, degree of darkness and color of the defect.

Composite resin filling is direct dental filling. They are placed directly into a tooth and hardened right after being placed. A new development in Dentistry is the indirect dental filling.

Composite Analysis
Color and translucency of specific composite materials can be analyzed by judging the amount of hue, chroma, value and translucency at thicknesses of .5 millimeter, 1.0 millimeter, 1.5 millimeter and 2.O millimeter. Analysis can be done by simple experimentation.

A simple technique of composite analysis places a specific shade of material on a tooth defect one layer at a time without bonding. Each layer should be approximately .5mm, cured and evaluated for color. When complete block out of background tooth color and the shade of the restorative material is achieved, the material thickness is measured and recorded. It is now known that this particular shade at the recorded thickness will block out that color. As different degree of darkness and color defects are tested, they are recorded on a Composite Color/Depth Chart. A faster and more deliberate technique to construct a Composite Color/Depth Chart can be done by placing composite onto surfaces of materials with similar colors to those seen in restorative situations such as shade tabs. This produces a nice reference because the shade of the defect may be taken with a shade guide and referenced to the chart