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An in vitro comparative study of intracanal fluid motion and wall shear stress induced by ultrasonic and polymer rotary finishing files in a simulated root canal model.

Koch J, Borg J, Mattson A, Olsen K, Bahcall J - ISRN Dent (2012)

Bottom Line: Particle movement in the fluid was captured using a high-speed digital camera and DaVis 7.1 software.A hot-wire was placed in an acrylic root canal and the canal was filled with distilled water.The ultrasonic and polymer rotary finishing files were separately tested in a static position and in a cyclical axial motion.

View Article: PubMed Central - PubMed

Affiliation: College of Engineering, Marquette University, Milwaukee, WI 53233, USA.

ABSTRACT
Objective. This in vitro study compared the flow pattern and shear stress of an irrigant induced by ultrasonic and polymer rotary finishing file activation in an acrylic root canal model. Flow visualization analysis was performed using an acrylic canal filled with a mixture of distilled water and rheoscopic fluid. The ultrasonic and polymer rotary finishing file were separately tested in the canal and activated in a static position and in a cyclical axial motion (up and down). Particle movement in the fluid was captured using a high-speed digital camera and DaVis 7.1 software. The fluid shear stress analysis was performed using hot film anemometry. A hot-wire was placed in an acrylic root canal and the canal was filled with distilled water. The ultrasonic and polymer rotary finishing files were separately tested in a static position and in a cyclical axial motion. Positive needle irrigation was also tested separately for fluid shear stress. The induced wall shear stress was measured using LabVIEW 8.0 software.

No MeSH data available.


Flow visualization experimental model.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig1: Flow visualization experimental model.

Mentions: An acrylic root canal model was instrumented to size 30/.06 and clamped to a translation stage to control its location. The model was filled with a mixture of distilled water and rheoscopic fluid. A Photron Fastcam Ultima APX-RS high-speed camera with a Navitar 12x zoom lens and a 5x objective lens recorded images of the fluid motion at a magnification of 4.69x. An ROI 150 Illuminator was used to illuminate the model (Figure 1).


An in vitro comparative study of intracanal fluid motion and wall shear stress induced by ultrasonic and polymer rotary finishing files in a simulated root canal model.

Koch J, Borg J, Mattson A, Olsen K, Bahcall J - ISRN Dent (2012)

Flow visualization experimental model.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3313576&req=5

fig1: Flow visualization experimental model.
Mentions: An acrylic root canal model was instrumented to size 30/.06 and clamped to a translation stage to control its location. The model was filled with a mixture of distilled water and rheoscopic fluid. A Photron Fastcam Ultima APX-RS high-speed camera with a Navitar 12x zoom lens and a 5x objective lens recorded images of the fluid motion at a magnification of 4.69x. An ROI 150 Illuminator was used to illuminate the model (Figure 1).

Bottom Line: Particle movement in the fluid was captured using a high-speed digital camera and DaVis 7.1 software.A hot-wire was placed in an acrylic root canal and the canal was filled with distilled water.The ultrasonic and polymer rotary finishing files were separately tested in a static position and in a cyclical axial motion.

View Article: PubMed Central - PubMed

Affiliation: College of Engineering, Marquette University, Milwaukee, WI 53233, USA.

ABSTRACT
Objective. This in vitro study compared the flow pattern and shear stress of an irrigant induced by ultrasonic and polymer rotary finishing file activation in an acrylic root canal model. Flow visualization analysis was performed using an acrylic canal filled with a mixture of distilled water and rheoscopic fluid. The ultrasonic and polymer rotary finishing file were separately tested in the canal and activated in a static position and in a cyclical axial motion (up and down). Particle movement in the fluid was captured using a high-speed digital camera and DaVis 7.1 software. The fluid shear stress analysis was performed using hot film anemometry. A hot-wire was placed in an acrylic root canal and the canal was filled with distilled water. The ultrasonic and polymer rotary finishing files were separately tested in a static position and in a cyclical axial motion. Positive needle irrigation was also tested separately for fluid shear stress. The induced wall shear stress was measured using LabVIEW 8.0 software.

No MeSH data available.