Effect of casting technique on surface roughness and consequent mass loss after polishing of NiCr and CoCr base metal alloys: a comparative study with titanium

Surface roughness and hardness evaluation of some base metal alloys and denture base acrylics used for oral rehabilitation

“…These biomaterials are in close contact with soft and hard oral tissues; therefore, an important feature of these biomaterials must be the ability to coexist in contact with tissues without causing any irritating, inflammatory, allergic, toxic, or carcinogenic reactions [1][2][3][4][5]. Surface roughness (SR) of dental materials might cause microtraumas in the tissue and enhance microorganism's retention, contributing directly or indirectly to promote tissues injury and to increase the incidence of oral disease [6][7][8].…”

Effect of firing cycle and surface finishing on the sag resistance of long-span metal ceramic framework using base metal alloys—an in vitro study

“…But these alloys had certain disadvantages like low modulus of elasticity and poor sag resistance during the porcelainfiring cycle which led to use of base metal alloys for fixed restorations. [7][8][9][10] compare the relative difference in the sag-related deflection values between the four alloy groups.…”

A quality assessment of titanium castings produced in an experimental short-heating-cycle investment

“…Rounded and incomplete margins are not acceptable 14,15 , and these defects might be related to casting temperature, mold temperature, casting machine, and mold permeability.…”

“…However, SiO 2 can be reduced by Ti, and this affects the physical and mechanical properties of the titanium castings [5][6][7][8][9][10][11][12] . On the other hand, spinel-based investments produce enough thermal expansion to compensate for the Ti casting shrinkage and produce a minor reaction layer thickness but are more expensive 10,[13][14][15][16][17][18][19][20][21] . Another concern about titanium castings is deficient mold filling that may be related to the casting machine, temperature gradient between molten metal and mold temperature, and reactions between molten titanium and investment materials, beyond permeability of the investment [19][20][21] .…”