[The surface roughness analysis of the titanium casting founding by a new titanium casting investment material].
OBJECTIVE
To investigate the surface roughness property of the titanium castings cast in a new investment for titanium casting.


METHODS
Six wax patterns (20 mm × 20 mm × 0.5 mm) were invested using two investments: three in a new titanium investment material and three in the control material (Rematitan Plus). Six titanium specimens were obtained by conventional casting. After casting, surface roughness of the specimens were evaluated with a surface profilometer.


RESULTS
The surface roughness of the specimens cast in new titanium investment material was (1.72 ± 0.08) µm, which was much smaller than that from Rematitan Plus [(1.91 ± 0.15) µm, P < 0.05].


CONCLUSIONS
The surfaces of titanium cast using these two investment materials are both smooth enough to fulfill the demand of the titanium precision-casting for prosthodontic clinical use.
Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China. puier@me.com
Qin-ye
QY
Liang
Xia-yi
XY
Wu
Xue-feng
XF
Lin
D003734:Dental Casting Investment / Q000737:chemistry*; D003735:Dental Casting Technique; D008422:Materials Testing; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
D003734:Dental Casting Investment; D014025:Titanium