METHOD FOR CHANGING LIGHT TRANSMITTANCE OF DENTAL ZIRCONIA MATERIAL

摘要

The present invention relates to a method for changing translucency of zirconia dental materials through applying an yttrium or ytterbium salt solution onto a pre-sintered zirconia material by dipping or brush-coating. Accordingly, the need of young patient in relation to the translucent requirement for incisal portion of anterior teeth is met in which the translucent level from the crown neck to the incisal portion is gradually changed in a natural manner, similar to natural teeth. A color gradient effect of the crown is produced through dipping in or brush-coatinging with yttrium or ytterbium salt solution. Moreover, the present invention involves simple operating steps and low cost while providing high consistency in quality.