PURPOSE To compare prefabricated and custom-made bars used for implant-retained mandibular complete overdentures. MATERIALS Ten completely edentulous patients were selected for replacement with dental implants. Each patient received 2 (press-fit) dental implants, 1 implant on each side in the canine regions of the mandible. The implants were left submerged (unloaded) for a healing osseointegr...

Mandibular fractures are frequently encountered in oral and maxillofacial surgery. Open reduction and internal fixation (ORIF) is one of the treatments of choice (1-3). Maxillomandibular fixation (MMF) is usually performed during surgery (2-5). Recently, an arch bar was reconsidered as a means of providing additional stability to internal fixation in anterior mandibular fractures (1, 5). The ar...

Nucleation rate measurements of water in the presence of nitrogen as a carrier gas are reported at total pressures near 10, 25, and 40 bar, and temperatures of 230 and 250 K. The results were obtained using our pulse-expansion wave tube, particularly suited for high pressure nucleation research. Enhanced fugacity of water vapor in the mixture, due to the presence of nitrogen, was quantitatively...

Bar impact instruments, such as the (split) Hopkinson bars and direct bars, measure blast/impact waves or mechanical properties of materials at high strain rates. To effectively use it is essential to know (i) elastic bar, (ii) correction factor measured strain, (iii) information on velocity. This paper presents a graphic-user-interface (GUI) program prepared for solving these fundamental issue...

A high strain rate tensile testing technique for sheet materials is presented which makes use of a split Hopkinson pressure bar system in conjunction with a load inversion device. With compressive loads applied to its boundaries, the load inversion device introduces tension into a sheet specimen. Two output bars are used to minimize the effect of bending waves on the output force measurement. A...

Sun, Jianzhuo. M.S.A.A., Purdue University, May 2014. Biaxial Shear/Tension Failure Criteria of Spectra single fibers. Major Professor: Weinong Chen. An experimental study was conducted to develop the biaxial failure surface criteria of single Spectra 130d and 100d filaments in a torsion-tension environment. The crosssectional profiles of single Spectra fibers were investigated using scanning e...

Abstract There are a variety of uses for metal matrix composites (MMC), including the aerospace and automotive industries. Because their benefits light weight inexpensive cost, they popular. Wire cut electric discharge machining (WEDM) stands out as great option creating complex or complicated shapes composite materials, especially when compared to other common non-traditional processes. An AA6...

 Effects of inoculation level (4 or 8-fold compared to standard inoculation) and order (standard inoculation before fermentation and 3-fold inoculation at the end of fermentation = 1+3, Two-fold inoculation before fermentation and the same at the end of fermentation = 2+2, 2+6, 4-fold before fermentation = 4, 4+4, and 8) of culture inoculums containing probiotics on viscosity, phase separation,...

Abstract The paper presents the results of research on influence adjuvant concentration size drops produced by spray nozzles agricultural sprayers. For tests, Normaton with composition total nitrogen, amide nitrogen (N-NH 2 ) and phosphorus pentoxide (P O 5 was used. added to water taken from municipal supply system city Lublin. tests were carried out for three concentrations, i.e. 75%, 100%, 1...