Results 121 to 130 of about 52,719 (329)
Journal of Prosthodontics, EarlyView.Abstract Purpose This study evaluated and compared the marginal fidelity of milled zirconia copings before and after finishing and polishing with and without a control die. Materials and Methods This prospective multicenter in vitro trial involved two methods regularly used in two clinics for hybrid and full‐digital workflows.
Marwan Al Akkad +5 more
wiley +1 more source
Journal of Prosthodontics, EarlyView.Abstract Purpose In metal–ceramic restorations, the substructure fabrication method and design may affect the prognosis of the prosthesis. This study evaluated and compared the fracture resistance of metal–ceramic restorations fabricated with different substructure fabrication methods using two different alloy powders and designs.
Young‐Hoon Lee +4 more
wiley +1 more source
Research of the Finite Element Multi Tooth Contact of Spiral Bevel Gear with Different Load
Jixie chuandong, 2016 According to the mathematical model of milling tooth processing of spiral bevel gear,the tooth surface parameters of spiral bevel gear are obtained.The precise three- dimensional model is established.By using the ANSYS workbench software,the change rule ...
Chen Zhiliang, Yang Rongsong, Liu Qiang
doaj
Advanced Waterjet Technology for Machining Beveled Structures of High-Strength and Thick Material
MachinesThe bevel cutting of large-thickness plates is a key process in modern industries. However, traditional processing method such as air-arc gouging bevel cutting or laser bevel cutting may cause serious deformation and rough surface quality due to the ...
Mingming Du +5 more
doaj +1 more source
Low-noise, high-strength, spiral-bevel gears for helicopter transmissions [PDF]
Improvements in spiral-bevel gear design were investigated to support the Army/NASA Advanced Rotorcraft Transmission program. Program objectives were to reduce weight by 25 percent, reduce noise by 10 dB, and increase life to 5000 hr mean-time-between ...
Handschuh, Robert F. +3 more
core +1 more source
Bevel Tip Deformation in New and Used Dental Needles
, 2015 César Gaitán Fonseca +4 more
openalex +2 more sources
Journal of Prosthodontics, EarlyView.Abstract Purpose To evaluate how commercially available composite resins in varying filler content affect the fabrication and fit accuracy (trueness and precision) of additively manufactured (AM) definitive crowns with different margin thickness and cement gaps by comparing them to subtractively manufactured (SM) polymer‐infiltrated ceramic crowns ...
Mustafa Borga Dönmez +5 more
wiley +1 more source
Jixie chuandong, 2013 The generating principle,the mechanical structure and the corresponding motion relationship of the cradle gear milling of spiral bevel gear are analyzed.A new method of three-axis numerical control to reform spiral bevel gear gear milling by using ...
陈金瑞, 杨琰, 魏冰阳
doaj
Computer-aided design of bevel gear tooth surfaces [PDF]
This paper presents a computer-aided design procedure for generating bevel gears. The development is based on examining a perfectly plastic, cone-shaped gear blank rolling over a cutting tooth on a plane crown rack.
Coy, John J. +2 more
core +1 more source