Attachment level measurements with a constant force electronic probe

1988 ◽  
Vol 15 (3) ◽  
pp. 185-188 ◽  
Author(s):  
I. Magnusson ◽  
W. B. Clark ◽  
R. G. Marks ◽  
C. H. Gibbs ◽  
M. Manouchehr-Pour ◽  
...  
Keyword(s):  
Constant Force ◽  
Electronic Probe ◽  
Attachment Level

Clinical Evaluation of a Constant Force Electronic Probe

1993 ◽  
Vol 64 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Marc Quirynen ◽  
Ann Callens ◽  
Daniel van Steenberghe ◽  
Marken Nys
Keyword(s):  
Clinical Evaluation ◽  
Constant Force ◽  
Electronic Probe

The Strategy and Advantage in Use of an Electronic Probe for Attachment Measurement

1993 ◽  
Vol 7 (2) ◽  
pp. 152-157 ◽  
Author(s):  
W.B. Clark ◽  
I. Magnusson ◽  
Y.Y. Namgung ◽  
M.C.K. Yang
Keyword(s):  
Clinical Setting ◽  
Gold Standard ◽  
Large Error ◽  
Gingival Tissue ◽  
Time Interval ◽  
Error Sources ◽  
Designed Experiments ◽  
Electronic Probe ◽  
Periodontal Probing ◽  
Attachment Level

Attachment level has been used as the "gold standard" for assessment of the progression of periodontal disease. However, the measurement of attachment level by periodontal probing can be subject to a large number of error sources. Recently, we have designed experiments by using an electronic probe to identify the magnitude of error components due to the instrument, gingival tissue condition, position or probing angle, and time interval between replicate probings. Even with a very careful clinical setting, a few percent of uncontrollable large errors or outliers could not be avoided. A previously used 'option-3' probing scheme to reduce the unexpected large error is justified from the mathematical viewpoint.

Reproducibility of Probing Depth Measurements Using a Constant-Force Electronic Probe: Analysis of Inter- and Intraexaminer Variability

2003 ◽  
Vol 74 (12) ◽  
pp. 1736-1740 ◽  
Author(s):  
Marcelo W.B. Araujo ◽  
Kathleen M. Benedek ◽  
Janice R. Benedek ◽  
Sara G. Grossi ◽  
Joan Dorn ◽  
...  
Keyword(s):  
Constant Force ◽  
Probe Analysis ◽  
Probing Depth ◽  
Electronic Probe

Reproducibility of an electronic probe in relative attachment level measurements

1992 ◽  
Vol 19 (8) ◽  
pp. 541-548 ◽  
Author(s):  
Mark C. K. Yang ◽  
R. G. Marks ◽  
I. Magnusson ◽  
B. Clouser ◽  
W. B. Clark
Keyword(s):  
Electronic Probe ◽  
Attachment Level

An Assessment of the Validity of a Constant Force Electronic Probe in Measuring Probing Depths

1995 ◽  
Vol 66 (10) ◽  
pp. 848-851 ◽  
Author(s):  
P.S. Hull ◽  
V. Clerehugh ◽  
A. Ghassemi-Aval
Keyword(s):  
Constant Force ◽  
Electronic Probe

The study for constant force characteristic of C-shaped superelastic SMA

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1253-1259
Author(s):  
Minghui Wang ◽  
Hongliu Yu
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Medical Device ◽  
Soft Tissues ◽  
Computational Simulation ◽  
Force Characteristic ◽  
Constant Force ◽  
Curve Shape ◽  
Artificial Sphincter ◽  
Round Bar

Clamping devices with constant force or pressure are desired in medical device, such as hemostatic forceps and the artificial sphincter, to prevent soft tissues from injures due to overloading. It is easily obtained by stretching an SMA wire. However, studies with SMA bending round bar have seldom been reported before. This paper studied constant force characteristic of C-shaped round bar with shape memory alloys. Optimization designs of the components were carried out with computational simulation. Numerical results show that the phenomenon of constant force strongly depends on contour curve shape and geometric dimensions of the C-shaped round bar of SMA component.

Design of a Single-Acting Constant-Force Actuator Based on Dielectric Elastomers

2008 ◽  
Author(s):  
Giovanni Berselli ◽  
Rocco Vertechy ◽  
Gabriele Vassura ◽  
Vincenzo Parenti Castelli
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Compliant Mechanism ◽  
Structural Parameters ◽  
Dielectric Elastomer ◽  
Constant Force ◽  
Element Analysis ◽  
Body Model ◽  
Rigid Body Model ◽  
Supporting Frame

The interest in actuators based on dielectric elastomer films as a promising technology in robotic and mechatronic applications is increasing. The overall actuator performances are influenced by the design of both the active film and the film supporting frame. This paper presents a single-acting actuator which is capable of supplying a constant force over a given range of motion. The actuator is obtained by coupling a rectangular film of silicone dielectric elastomer with a monolithic frame designed to suitably modify the force generated by the dielectric elastomer film. The frame is a fully compliant mechanism whose main structural parameters are calculated using a pseudo-rigid-body model and then verified by finite element analysis. Simulations show promising performance of the proposed actuator.

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