Results 141 to 150 of about 44,878 (304)
Engineering analysis and test results of the pre-stage planetary gear trains for wrist rotation and pitch assembly and azimuth and elevation assembly of the extendable stiff arm manipulator kit assembly [PDF]
In order to improve the performance capability of the Extendable Stiff Arm Manipulator (ESAM) it was necessary to increase the overall gear ratio by a factor of approximately four.
Morris, R. N.
core +1 more source
Community Dentistry and Oral Epidemiology, EarlyView.ABSTRACT Objectives The Oral Health Impact Profile (OHIP) is the most widely used instrument to measure the subjective impact of oral conditions. This study reports the shortening and psychometric evaluation of an ultra‐short version (OHIP‐7A) from the OHIP‐14 in a large national Australian population.
Brandan Khor +6 more
wiley +1 more source
Clinical Oral Implants Research, EarlyView.ABSTRACT Objective To evaluate the frequency and quantity of residual cement after cementation of monolithic zirconia crowns with glass ionomer or resin composite cement on customized ceramic abutments, following different intraoral retention times. The influence of margin location, quadrant and implant region was also assessed.
Maria Weinreuter +4 more
wiley +1 more source
Clinical Oral Implants Research, EarlyView.ABSTRACT Objectives To evaluate the prosthetic outcomes of implant‐assisted maxillary full‐arch restorations with ≥ 3 years of follow‐up. Materials and Methods A systematic electronic literature search was conducted in five databases to identify randomised controlled trials and prospective clinical studies involving patients who received full‐arch ...
Ethan Ng +5 more
wiley +1 more source
Development of a full-scale transmission testing procedure to evaluate advanced lubricants [PDF]
Experimental tests were performed on the OH-58A helicopter main rotor transmission in the NASA Lewis 500-hp Helicopter Transmission Test Stand. The testing was part of a joint Navy/NASA/Army lubrication program.
Decker, Harry J. +2 more
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Clinical Oral Implants Research, EarlyView.ABSTRACT Aim To evaluate the prevalence and risk indicators of peri‐implant diseases in a randomly selected Chinese population. Materials and Methods A total of 819 patients with 1412 implants from eight university hospital databases were clinically and radiographically evaluated along with medical records to assess the prevalence of peri‐implant ...
Xinbo Yu +9 more
wiley +1 more source
A method of selecting grid size to account for Hertz deformation in finite element analysis of spur gears [PDF]
A method of selecting grid size for the finite element analysis of gear tooth deflection is presented. The method is based on a finite element study of two cylinders in line contact, where the criterion for establishing element size was that there be ...
Chao, C. H. C., Coy, J. J.
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Clinical Oral Implants Research, EarlyView.ABSTRACT Objectives This laboratory study investigated the effect of two different retentive heights of Ti‐base abutments (3.5 and 5.5 mm) and crown heights (13 and 16 mm) on the load at failure and survival of monolithic zirconia implant‐supported crowns replacing a maxillary central incisor.
Esha Zahid +5 more
wiley +1 more source
Clinical Oral Implants Research, EarlyView.ABSTRACT Objectives This cross‐sectional study primarily aimed at investigating the association between the transmucosal emergence geometry and the prevalence of peri‐implant diseases in bone‐ and tissue‐level implants (BL/TL). As secondary objectives, the association of other implant‐, prosthesis‐, and patient‐related variables with crestal bone ...
Clemens Raabe +6 more
wiley +1 more source
Tooth Contact Shift in Loaded Spiral Bevel Gears [PDF]
An analytical method is presented to predict the shifts of the contact ellipses of spiral bevel gear teeth under load. The contact ellipse shift is the motion of the tooth contact position from the ideal pitch point to its location under load. The shifts
Altidis, P. C. +4 more
core +1 more source