Old anterior tooth

Note:

• Generally, standard full veneering is done with DENTINE and ENAMEL materials.
• However, OPAQUE DENTINE materials can also be used as an option.
• In the following cases, the additional application of OPAQUE DENTINE materials is recommended:
  to prevent the loss of shade on pontics, especially in the gingival area, for the precise reproduction of shade-intensive spots, such as occlusal surfaces of molars, to support the shade effect in cases of small space relations (< 0.8 mm).

Tip:

• In the present example, the cervical area was intensified with CHROMA STAINS and also dusted with FLUO INTENSE materials.
• The advantage of dusting the surfaces with FLUO INTENSE is that it provides a porous surface, where the light penetrating the restoration breaks down naturally.

Note:
Based on the poor thermal conductivity of both materials (Y-TZP and veneering ceramic), higher residual stress can occur in this compound system than is known to typically occur in metal ceramics. This residual thermal stress in the veneering ceramic can be counteracted by means of slow cooling during the last firing cycle to below the transformation temperature of the veneering ceramic (for VITA LUMEX AC, approx. 550 °C).