Related Experiment Videos
Analysis of forces developed during obturations. Wedging effect: Part I
J Y Blum1, P Machtou, J P Micallef
1Dental School of Montpellier, University of Montpellier, France.
Journal of Endodontics
|June 26, 1998
Summary
This study defines and measures the "wedging effect" from intracanal forces during dental obturation. Results show no significant difference in forces between warm vertical compaction and lateral condensation techniques.
Area of Science:
- Endodontics
- Dental Materials Science
- Biomedical Engineering
Background:
- The "wedging effect" in endodontics refers to hydrostatic pressure within a root canal caused by intracanal forces during obturation.
- Previous devices like the Endographe could not measure these crucial intracanal forces.
Purpose of the Study:
- To define and quantify the wedging effect generated by intracanal forces during root canal obturation.
- To compare the wedging effect produced by warm vertical compaction and lateral condensation techniques.
Main Methods:
- Development of a novel two-part cupule force analyzer to measure intracanal forces.
- Endodontists performed warm vertical compaction and lateral condensation using the new device.
- Forces were recorded over time and visualized using "Endogrammes".
Main Results:
- The new device successfully recorded and analyzed the wedging effect during obturation.
- Mean wedging forces showed no statistically significant difference between warm vertical compaction and lateral condensation techniques across practitioners.
- Endogrammes provide a novel graphical method for analyzing intracanal forces over time.
Conclusions:
- The developed force analyzer effectively measures the wedging effect in root canal obturation.
- Both warm vertical compaction and lateral condensation produce comparable wedging forces.
- Graphical analysis of intracanal forces offers a new perspective for comparing obturation techniques.