Results 81 to 90 of about 134,700 (206)

Tooth wear among five-year-old children in Jakarta, Indonesia

open access: yesBMC Oral Health, 2019
Background This study aimed to evaluate the prevalence of tooth wear among preschool children in Jakarta, Indonesia, and examine the risk factors associated with its occurrence. Methods An epidemiological survey was conducted with a cross-sectional study
Diah Ayu Maharani   +6 more
doaj   +1 more source

The Prevalence and Severity of Tooth Wear in Type 2 Diabetic Patients

open access: yesInternational Journal of Dentistry, 2018
Objective. To assess the prevalence and severity of tooth wear in type 2 diabetic patients. Methods. Attendees at a diabetic clinic at Wiang Pa Pao Hospital in Chiang Rai province, Thailand, were invited to take part in this cross-sectional study.
Patcharawan Srisilapanan   +2 more
doaj   +1 more source

Research progress on the application of digital technology in the diagnosis and treatment of tooth wear [PDF]

open access: yes口腔疾病防治
Tooth wear is a common and complex oral problem, with a gradually increasing global incidence. Tooth wear not only affects the oral function and esthetics of patients but may also lead to tooth sensitivity, temporomandibular joint diseases, and other ...
HE Yi, WANG Dingjie, XIAO Yuhong
doaj   +1 more source

Experimental investigation on micromilling of oxygen-free, high-conductivity copper using tungsten carbide, chemistry vapour deposition and single-crystal diamond micro tools [PDF]

open access: yes, 2010
Insufficient experimental data from various micro tools limit industrial application of the micromilling process. This paper presents an experimental comparative investigation into micromilling of oxygen-free, high-conductivity copper using tungsten ...
Cheng, K, Huo, D
core   +1 more source

Study on the Time-varying Mesh Stiffness of Speed-increasing Gear Pair with Non-uniform Wear

open access: yesJixie chuandong, 2019
Taking an involute cylindrical speed-increasing gear pair as the research object, the tooth surface contact pressure and the relative sliding velocity are deduced to establish the non-uniform wear model of the spur gear pair based on the Hertz contact ...
He Zeyin   +3 more
doaj  

The Prevalence of Tooth Wear in an Adult Population from the Eastern Province of Saudi Arabia

open access: yesClinical, Cosmetic and Investigational Dentistry, 2020
Khalifa S Al-Khalifa Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi ArabiaCorrespondence: Khalifa S Al-KhalifaCollege of Dentistry, Imam Abdulrahman Bin Faisal University, P.O.
Al-Khalifa KS
doaj  

Design of an advanced 500-hp helicopter transmission [PDF]

open access: yes, 1983
High contact ratio spar gears planetary, spiral besel gears, bearings, investment-cast planet carrier, and investment cast stainless-steel housings are ...
Battles, R. A., Braddock, C. E.
core   +1 more source

The Development and Experimental Validation of a Real-Time Coupled Gear Wear Prediction Model Considering Initial Surface Topography, Dynamics, and Thermal Deformation

open access: yesMachines
Errors affect the actual meshing process of gears, alter the actual wear pattern of the tooth profile, and may even impact the overall service life of machinery.
Jingqi Zhang   +5 more
doaj   +1 more source

An innovation integrated approach to testing motorcycle drive chain lubricants [PDF]

open access: yes, 2004
An innovative integrated approach to the testing and comparison of motorcycle drive chain lubricants is presented. This is a novel way of testing the lubrication by using loaded operating chains and sprockets.
Lee, P.M., Priest, M.
core  

Caries severity in relation to oral health knowledge and behavior of third and fifth year dental students / University of Baghdad (A comparative study)

open access: yesJournal of Baghdad College of Dentistry, 2014
Background: Tooth wear is one of the most common problems in the older dentate population which results from the interaction of three processes (attrition, abrasion and erosion) and it affects all societies, different age groups, and all cultures.
Nibal M Hoobi
doaj  

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