Related Experiment Video
Updated: Feb 6, 2026

3D Printing of Preclinical X-ray Computed Tomographic Data Sets
Published on: March 22, 2013
Micro-computed tomographic evaluation of two single rotary glide path systems
P J van der Vyver1, F Paleker1, M Vorster1
1Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
Aim:
To compare (i) canal-centring ability and transportation of K-files, ProGlider and One-G files after glide path preparation in curved root canals; (ii) changes in canal volume after glide path preparation, using micro-computed tomography.
Methodology:
A total of 135 mesiobuccal root canals of maxillary molars were randomly divided into three glide path groups: (i) pre-curved sizes 10-15-20 K-files (n = 45); (ii) size 10 K-file followed by One-G (n = 45); and (iii) size 10 K-file followed by ProGlider (n = 45). Micro-CT was used to scan teeth before and after glide path preparation; the isotropic voxel size of the micro-CT scans was 22 μm. Centring ratio values and canal transportation values were compared between the three glide path preparation groups at the apical, midroot and coronal levels. Changes in canal volume were compared for all glide path groups. The results were analysed statistically using a one-way anova and Kruskal-Wallis H tests.
Results:
One-G and ProGlider displayed significantly greater mean centring ratio values than K-files at all levels examined (P < 0.05). Apical canal transportation values after glide path preparation were significantly higher for the K-files (P < 0.05). At the midroot and coronal levels, canal transportation results were statistically similar for all glide path groups (P > 0.05). Changes in canal volume were statistically similar for the three glide path groups (P > 0.05).
Conclusion:
One-G and ProGlider were significantly more centred at the apical, midroot and coronal levels than K-files. Apical canal transportation ratio values after glide path enlargement were significantly higher for K-files than for One-G and ProGlider. All groups resulted in similar canal volume changes.
Related Concept Videos
Single Pipe Systems
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...
Mean free path and Mean free time
Path Between Thermodynamics States
Interference: Path Lengths
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion
Second Order systems II

