Results 261 to 270 of about 117,344 (304)

Canal Surfaces with Quaternions

Advances in Applied Clifford Algebras, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Aslan, Selahattin, Yaylı, Yusuf
openaire   +2 more sources

The Perspective Silhouette of a Canal Surface

Computer Graphics Forum, 2003
Abstract We present an efficient and robust algorithm for parameterizing the perspective silhouette of a canal surface and detecting each connected component of the silhouette. A canal surface is the envelope of a moving sphere with varying radius, defined by the trajectory C(t) of its center and a radius function
Ku-Jin Kim, In-Kwon Lee
openaire   +1 more source

μ-Bases for rational canal surfaces

Computer Aided Geometric Design, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shanshan Yao, Xiaohong Jia 0001
openaire   +1 more source

Quantitative evaluation of root canal surface roughness after filing with adaptive reciprocating and continuous rotary instruments

Microscopy Research and Technique, 2017
Obtaining clean and smooth root canal walls is the ideal clinical outcome of the cleaning and shaping stage in root canal treatment. This study compares the surface roughness of root canal surfaces instrumented with a NiTi filing system with either ...
Vahid Sakhaei Manesh, Paul Giacomin, Richard Stoll   +2 more
exaly   +2 more sources

Root Canal Preparation with a Novel Nickel-Titanium Instrument Evaluated with Micro-computed Tomography: Canal Surface Preparation over Time

Journal of Endodontics, 2010
INTRODUCTION: The aim of this part of an ongoing study was to describe the dentin removal ability of a novel nickel-titanium instrument, the self-adjusting file (SAF), by using micro-computed tomography.
, Frank Paque
exaly   +2 more sources

On the Parameterization of Rational Ringed Surfaces and Rational Canal Surfaces

Mathematics in Computer Science, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bohumír Bastl, Bert Jüttler, Miroslav Lávicka, Tino Schulz, Zbynek Sír   +4 more
openaire   +2 more sources

HelSweeper: Screw-sweeps of canal surfaces

Computer-Aided Design, 2012
A tube is a solid bounded by the union of a one-parameter family of circles that may be decomposed into canal-surfaces and planar disks or annuli. A screw-sweep is the region swept by a shape during a screw motion. HelSweeper computes the boundary of a screw-sweep of an arbitrary union of tubes and polyhedra. To do so, it generates a superset of faces,
Jarek Rossignac, Jay J. Kim
openaire   +1 more source

Surface Tension of Root Canal Irrigants

Journal of Endodontics, 2000
The aim of this study was to evaluate the surface tension values of established and potential endodontic irrigants to which a surface active agent had not been added. Additionally, Cetredixine, a surfactant-containing 0.2% chlorhexidine gluconate solution, was included in the measurements.
F, Taşman, Z C, Cehreli, C, Oğan, I, Etikan   +3 more
openaire   +2 more sources

Computing the Distance between Canal Surfaces

2010
A canal surface is the envelope of a one-parameter set of moving spheres. We present an accurate and efficient method for computing the distance between two canal surfaces. First, we use a set of cone-spheres to enclose a canal surface. A cone-sphere is a surface generated by sweeping a sphere along a straight line segment with the radius of the sphere
Tu, C, Ma, Y, Wang, W
openaire   +2 more sources

Canal surfaces versus normal ringed surfaces

Computer Aided Geometric Design, 1994
The author corrects a statement in a paper by \textit{J. K. Johnstone} [ibid. 10, No. 1, 1-24 (1993; Zbl 0767.65004)].
openaire   +2 more sources