An experimental model was proposed to study biofilm formation by Listeria monocytogenes ATCC 19117 on AISI 304 (#4) stainless steel surface and biotransfer potential during this process. In this model, biofilm formation was conducted on the surface of stainless steel coupons, set on a stainless steel base with 4 divisions, each one supporting 21 coupons. Trypic Soy Broth was used as bacterial g...

The aim of the current study was an in vivo evaluation of the bacterial adhesion on TiN coated orthodontic stainless steel wires in 20 patients (age15-25) undergoing fi xed orthodontic treatment who have the indication for placement of 0.019 ×0.0 25 inch Stainless steel arch wires in both jaws. TiN coatings were formed on orthodontic stainless steel wires by physical vapor deposition (PVD), The...

Objective. The purpose of this study was to analyze the absorption of metal ions released from stainless steel crowns by root surface of primary molars. Study Design. Laboratory research: The study included 34 primary molars, exfoliated or extracted during routine dental treatment. 17 molars were covered with stainless-steel crowns for more than two years and compared to 17 intact primary molar...

The throughput of the injection molding process is restricted by cooling time each cycle which accounts for three-fourths time. Manufacturing molds out copper or alloys can reduce because their high thermal conductivity, but mold life reduced has much lower hardness and strength than traditional materials such as steels. By layering steel onto using directed energy deposition, advantages both b...

OBJECTIVE To evaluate the quantitative effects on torque expression of varying the slot size of stainless steel orthodontic brackets and the dimension of stainless steel wire, and to analyze the limitations of the experimental methods used. MATERIALS AND METHODS In vitro studies measuring torque expression in conventional and self-ligating stainless steel brackets with a torque-measuring devi...

In this paper, the influence of heat treatment on PH17-7 stainless steel spring was evaluated. Precipitation hardening phenomenon of  PH 17-7 steel was evaluated in three stages. First, the spring constant changes with time and temperature was evaluated. Second, the spring constant changes with respect to its original length at constant temperature and time with blocking (spring length aft...