Results 21 to 30 of about 215,710 (307)

Variations in pulp/tooth area ratio as an indicator of age: a preliminary study [PDF]

open access: yes, 2004
This paper details for age determination of adult from single rooted theeth. The sample consisted of 100 Italians white Caucasioan patients (46 men, 54 womwn) aged between 18 and 72 years.
CAMERIERE R., FERRANTE L., M. CINGOLANI
core   +1 more source

Root resorption during orthodontic tooth movements [PDF]

open access: yesThe European Journal of Orthodontics, 2009
The aim of the study was to compare the extent of maxillary incisor root resorption during different orthodontic tooth movements using three different techniques, namely the basal intrusion arch, the three component arch, and levelling of the upper dental arch with the straightwire appliance.
C, Ramanathan, Z, Hofman
openaire   +2 more sources

A novel method for sex estimation using 3D computed tomography models of tooth roots:A volumetric analysis [PDF]

open access: yes, 2017
Advances in technologies such as computed tomography (CT) scanning have allowed for further examination of dental sexual dimorphism in modern and archaeological populations.The present study investigates a new technique for sex estimation using the ...
Acharya   +52 more
core   +1 more source

Application of 3D tooth model for monitoring of implant space and inter-root distance without radiographs: a proof of concept study

open access: yesInternational Journal of Implant Dentistry, 2020
Background Radiographs are integral in evaluating implant space and inter-root distance. The purpose of this report is to introduce a method for evaluating the 3D root position with minimal radiation using a 3D tooth model composed of an intraoral ...
Kyungmin Lee, Gyu-Hyoung Lee
doaj   +1 more source

Long-term outcome of primary non-surgical root canal treatment [PDF]

open access: yes, 2012
Aim: The aim of this study is to examine the survival distributions of primary root canal treatment using interval-censored data and to assess the factors affecting the outcome of primary root canal treatment, in terms of periapical healing and tooth ...
Cheung, GSP, Lee, AHC, Wong, MCM
core   +1 more source

Potential of oil-lubricated cylindrical plastic gears

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
Bending strength of injection molded polyacetal test gears is investigated in back-to-back testing using oil-lubrication. To validate state of the art calculation methods, tooth geometries with a variable number of teeth are investigated, maintaining a ...
Christian HASL   +4 more
doaj   +1 more source

Premolar root and canal variation in South African Plio-Pleistocene specimens attributed to Australopithecus africanus and Paranthropus robustus [PDF]

open access: yes, 2016
South African hominin fossils attributed to Australopithecus africanus derive from the cave sites of Makapansgat, Sterkfontein, and Taung, from deposits dated between about 2 and 3 million years ago (Ma), while Paranthropus robustus is known from ...
Hublin, Jean-Jacques   +3 more
core   +1 more source

Effects of helix deviation on load distributions and bending stresses of continuous engaged helical gear drives

open access: yesAdvances in Mechanical Engineering, 2015
The research of the load distributions and bending stresses with helix deviations in power transmission systems is important for effectively improving gear load capacity. The equations of tooth surface with helix slope and form deviation were established
Tao Luo   +3 more
doaj   +1 more source

Dynamic tooth loads and stressing for high contact ratio spur gears [PDF]

open access: yes, 1983
An analysis and computer program were developed for calculating the dynamic gear tooth loading and root stressing for high contact ratio gearing (HCRG) as well as LCRG.
Cornell, R. W., Westervelt, W. W.
core   +1 more source

Development of a device to simulate tooth mobility [PDF]

open access: yes, 2010
Objectives: The testing of new materials under simulation of oral conditions is essential in medicine. For simulation of fracture strength different simulation devices are used for test set-up.
Bieniek KW   +18 more
core   +1 more source

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