What is the best mechanical device to clean the teeth in periodontal maintenance patients?

2021 ◽  
Vol 22 (3) ◽  
pp. 91-93
Author(s):  
Erfan Shamsoddin
Keyword(s):  
Mechanical Device ◽  
Periodontal Maintenance

DESIGN OF A MECHANICAL DEVICE FOR REDUCING NOISE AND ISSUANCE OF GAS AND PARTICLES FOR DIESEL ENGINES FROM AN ENERGY GENERATING ENGINE

2018 ◽  
Author(s):  
Herivaldo Pascoal ◽  
Domingos Sávio Tavares Mendes Junior ◽  
ANTONILSON CONCEIÇÃO ◽  
Yves Bandeira ◽  
Carlisson Azevedo ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Mechanical Device

Sliding Mode Control of an Actuated Knee Joint Orthosis

2021 ◽  
Vol 15 ◽  
Author(s):  
Imen Saidi ◽  
Asma Hammami
Keyword(s):  
Sliding Mode Control ◽  
Lower Limb ◽  
Sliding Mode ◽  
Position Tracking ◽  
Sliding Mode Controller ◽  
Mechanical Device ◽  
Tracking Errors ◽  
Mode Control ◽  
Speed Tracking ◽  
Human Morphology

Introduction: In this paper, a robust sliding mode controller is developed to control an orthosis used for rehabilitation of lower limb. Materials and Methods: The orthosis is defined as a mechanical device intended to physically assist a human subject for the realization of his movements. It should be adapted to the human morphology, interacting in harmony with its movements, and providing the necessary efforts along the limbs to which it is attached. Results: The application of the sliding mode control to the Shank-orthosis system shows satisfactory dynamic response and tracking performances. Conclusion: In fact, position tracking and speed tracking errors are very small. The sliding mode controller effectively absorbs disturbance and parametric variations, hence the efficiency and robustness of our applied control.

scholarly journals Accuracy of cup placement in total hip arthroplasty by means of a mechanical positioning device: a comprehensive cadaveric 3d analysis of 16 specimens

2019 ◽  
pp. 112070001987482
Author(s):  
Arthur J Kievit ◽  
Johannes G G Dobbe ◽  
Wouter H Mallee ◽  
Leendert Blankevoort ◽  
Geert J Streekstra ◽  
...  
Keyword(s):  
3D Models ◽  
Safe Zone ◽  
3D Analysis ◽  
Anterior Pelvic Plane ◽  
Mechanical Device ◽  
Acetabular Cup ◽  
Anteversion Angle ◽  
Positioning Device ◽  
The Mean ◽  
Safe Zones

Introduction: We tested whether a mechanical device (such as Hipsecure) to pinpoint the anterior pelvic plane (APP) as a guide can improve acetabular cup placement. To assess accuracy we asked: (1) is the APP an effective guide to position acetabular cup placement within acceptable ° of divergence from the optimal 40° inclination and 15° anteversion; (2) could a mechanical device increase the number of acetabular cup placements within Lewinnek’s safe zone (i.e. inclination 30° to 50°; anteversion 5° to 25°)? Methods: 16 cadaveric specimens were used to assess the 3D surgical success of using a mechanical device APP to guide acetabular cup placement along the APP. We used the Hipsecure mechanical device to implant acetabular cups at 40° inclination and 15° anteversion. Subequently, all cadaveric specimens with implants were scanned with a CT and 3D models were created of the pelvis and acetabular cups to assess the outcome in terms of Lewinnek’s safe zones. Results: The mean inclination of the 16 implants was 40.6° (95% CI, 37.7–43.4) and the mean anteversion angle was 13.4° (95% CI, 10.7–16.1). All 16 cup placements were within Lewinnek’s safe zone for inclination (between 30° and 50°) and all but 2 were within Lewinnek’s safe zone for anteversion (between 5° and 25°). Conclusion: In cadaveric specimens, the use of a mechanical device and the APP as a guide for acetabular cup placement resulted in good positioning with respect to both of Lewinnek’s safe zones.

scholarly journals Predictors of tooth loss during long‐term periodontal maintenance: an updated systematic review

2021 ◽  
Author(s):  
Rui Carvalho ◽  
João Botelho ◽  
Vanessa Machado ◽  
Paulo Mascarenhas ◽  
Gil Alcoforado ◽  
...  
Keyword(s):  
Systematic Review ◽  
Tooth Loss ◽  
Periodontal Maintenance

Aggregatibacter actinomycetemcomitans serotypes and JP2 outcomes related to clinical status over 6 years under periodontal maintenance therapy

2020 ◽  
Vol 116 ◽  
pp. 104747
Author(s):  
José Roberto Cortelli ◽  
Sheila Cavalca Cortelli ◽  
Davi Romeiro Aquino ◽  
Taís Browne Miranda ◽  
João Carlos Moreira Jardim ◽  
...  
Keyword(s):  
Maintenance Therapy ◽  
Clinical Status ◽  
Aggregatibacter Actinomycetemcomitans ◽  
Periodontal Maintenance

An electro-opto-mechanical device to make diffractive optical elements

2011 ◽  
Author(s):  
Jorge Castro-Ramos ◽  
Gabriel Gordiano-Alvarado ◽  
Carlos M. Ortiz-Lima ◽  
M. Antonio De-Jesus-Ortiz ◽  
Sergio Vazquez-Montiel ◽  
...  
Keyword(s):  
Diffractive Optical Elements ◽  
Mechanical Device ◽  
Optical Elements

A Simple Extensometer for Tensile Testing of Polymers

1958 ◽  
Vol 31 (3) ◽  
pp. 673-679
Author(s):  
A. E. Eagles ◽  
A. R. Payne
Keyword(s):  
Conventional Method ◽  
Tensile Testing ◽  
Considerable Increase ◽  
Mechanical Device

Abstract The prototype extensometer, which has now been in constant use for over a year, gives satisfactory results which compare favorably with those of the conventional method. The use of this extensometer, which is a simple mechanical device, robust and reliable in operation, removes the last obstacle from autographic recording of tests using dumbbell specimens, thus permitting a considerable increase in speed of tensile testing.

A Mechanical Device for Controlled Ocular Decompression

Ophthalmology ◽  
1979 ◽  
Vol 86 (5) ◽  
pp. 847-848
Author(s):  
Karl J. Fritz ◽  
Walter M. Jay ◽  
David J. Schanzlin ◽  
Ramesh C. Tripathi
Keyword(s):  
Mechanical Device
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