[A study on the bond interface between low-fusing dental porcelain and pure titanium].
OBJECTIVE
To evaluate the bond interface between low fusing dental porcelain and pure titanium by observing the topography and detecting the ionic diffusion in the interface area.


METHODS
The low fusing-porcelain La-porcelain produced by the authors or Vita Titankeramik porcelain was fused to the surfaces of pure titanium. The topography of the interface between pure titanium and porcelain, and the structure of experimental materials were observed with SEM. The state of ionic diffusion in the interface area was investigated with EPMA.


RESULTS
Excellent permeation and diffusion of La-porcelain were observed on the surfaces of pure titanium. The diffusion of ions of stannum and silicon was discovered in the interface area. The microstructure of La-porcelain to pure titanium bond interface was finer than that of Vita Titankeramik porcelain.


CONCLUSIONS
Excellent bond can be produced in the interface between La-porcelain and pure titanium. The bonding mechanism may involve mechanical bond and chemical bond. The ionic diffusion of stannum plays an important role in the bonding of porcelain to pure titanium.
Mo
A
A
Department of Proshodontics, School of Stomatology, WCUMS, Chengdu 610041, China.
Cen
Y
Y
Liao
Y
Y
Wang
J
J
Shi
X
X
D003722:Dental Alloys; D001840:Dental Bonding; D003776:Dental Porcelain; D012994:Dental Soldering; D016876:Metal Ceramic Alloys; D013718:Tensile Strength; D014001:Tin; D014025:Titanium
D003722:Dental Alloys; D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; D014001:Tin; C047040:Vita VMK 68; D014025:Titanium