scholarly journals Effect of print angulation on the accuracy and precision of 3D-printed orthodontic retainers

2022 ◽  
Vol 161 (1) ◽  
pp. 133-139
Author(s):  
Allison Williams ◽  
Sompop Bencharit ◽  
Il-Hyung Yang ◽  
Spiro Christos Stilianoudakis ◽  
Caroline K. Carrico ◽  
...  
Keyword(s):  
Accuracy And Precision ◽  
3D Printed ◽  
Orthodontic Retainers

Accuracy and precision of 3D-printed implant surgical guides with different implant systems: An in vitro study

2020 ◽  
Vol 123 (6) ◽  
pp. 821-828 ◽  
Author(s):  
Matthew Yeung ◽  
Aous Abdulmajeed ◽  
Caroline K. Carrico ◽  
George R. Deeb ◽  
Sompop Bencharit
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Surgical Guides ◽  
Accuracy And Precision ◽  
3D Printed

3D-Printed Wearable Personalized Orthodontic Retainers for Sustained Release of Clonidine Hydrochloride

2019 ◽  
Vol 20 (7) ◽  
Author(s):  
Heliu Jiang ◽  
Junhui Fu ◽  
Mingguang Li ◽  
Shanshan Wang ◽  
Bo Zhuang ◽  
...  
Keyword(s):  
Sustained Release ◽  
Clonidine Hydrochloride ◽  
3D Printed ◽  
Orthodontic Retainers

scholarly journals Characterizing Subsurface Rectangular Tilted Heat Sources Using Inductive Thermography

2020 ◽  
Vol 10 (16) ◽  
pp. 5444
Author(s):  
Arantza Mendioroz ◽  
Lorenzo Fuggiano ◽  
Pablo Venegas ◽  
Idurre Sáez de Ocáriz ◽  
Umberto Galietti ◽  
...  
Keyword(s):  
Heat Source ◽  
Surface Temperature ◽  
Synthetic Data ◽  
Temperature Data ◽  
Temperature History ◽  
Geometrical Parameters ◽  
Heat Sources ◽  
Noise Levels ◽  
Accuracy And Precision ◽  
3D Printed

In this study, we characterize the lateral dimension, depth, and inclination of buried tilted rectangular heat sources from time domain temperature data measured at the surface. The heat sources are representative for planar defects that emit heat in thermographic tests with internal burst excitation. We present a semi-analytical expression for the evolution of the surface temperature distribution. The emitted flux, dimensions and inclination of the heat source are determined by fitting the model to two perpendicular surface temperature profiles and the temperature history at one point of the surface. We show that the sensitivity of the data to the geometrical parameters of the heat source decreases as the angle it makes with the surface increases. The study also shows that the optimum duration of the excitation corresponds to a thermal diffusion length covering the distance from the surface to the deepest end of the heat source. The accuracy and precision of the results for different noise levels and inclinations have been tested by fitting the model to synthetic data with added noise. Fittings of experimental induction thermography data on 3D printed photo-polymeric resin samples containing calibrated Cu slabs confirm that it is possible to characterize tilted rectangular heat sources from surface temperature data.

Patient-Specific Guides for Total Hip Arthroplasty: A Paired Acetabular and Femoral Implantation Approach

2015 ◽  
Vol 9 (1) ◽  
Author(s):  
Jacob Stegman ◽  
Chris Casstevens ◽  
Todd Kelley ◽  
Vasile Nistor
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Bone Geometry ◽  
Patient Specific ◽  
Total Hip ◽  
Orthopedic Procedure ◽  
Accuracy And Precision ◽  
Patient Specific Instruments ◽  
3D Printed ◽  
Ct Data

While total hip arthroplasty (THA) is a common orthopedic procedure for treatment of hip arthritis, current techniques demonstrate poor implant alignment accuracy and precision, which is critical to the replacement's long-term survivorship. Patient-specific instruments to guide bone preparation and implantation could improve accuracy, thereby improving replacement survivorship. A single cadaver was CT (computer tomography) scanned to extract the 3D bone geometry, from which the operating surgeon planned a THA. Patient-specific guides were designed, 3D printed, and used in the cadaveric THA procedure. Postprocedural CT data were used to compare measured implant positioning versus the preprocedural template. Implanted component accuracy ranged from 1 deg–12 deg.

3D Printed Models for Surgical Planning and Reconstructive Implant Design in Sphenoorbital Tumor Surgery

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Hassan Othman ◽  
Sam Evans ◽  
Daniel Morris ◽  
Saty Bhatia ◽  
Caroline Hayhurst
Keyword(s):  
Surgical Planning ◽  
Implant Design ◽  
Tumor Surgery ◽  
3D Printed

A in Vivo Assay for Standardizing Heparin Preparations

1979 ◽  
Vol 41 (03) ◽  
pp. 576-582
Author(s):  
A R Pomeroy
Keyword(s):  
In Vitro Assays ◽  
British Pharmacopoeia ◽  
In Vitro Method ◽  
Standard Preparation ◽  
Reliable Estimation ◽  
Assay Procedure ◽  
Accuracy And Precision ◽  
Heparin Preparation

SummaryThe limitations of currently used in vitro assays of heparin have demonstrated the need for an in vivo method suitable for routine use.The in vivo method which is described in this paper uses, for each heparin preparation, four groups of five mice which are injected intravenously with heparin according to a “2 and 2 dose assay” procedure. The method is relatively rapid, requiring 3 to 4 hours to test five heparin preparations against a standard preparation of heparin. Levels of accuracy and precision acceptable for the requirements of the British Pharmacopoeia are obtained by combining the results of 3 to 4 assays of a heparin preparation.The similarity of results obtained the in vivo method and the in vitro method of the British Pharmacopoeia for heparin preparations of lung and mucosal origin validates this in vivo method and, conversely, demonstrates that the in vitro method of the British Pharmacopoeia gives a reliable estimation of the in vivo activity of heparin.

That which Is Unseen: A 3D-Printed Case-Based Didactic Approach to Teaching Pediatric Cerebrovascular Neurosurgery

2019 ◽  
Author(s):  
Avital Perry ◽  
Soliman Oushy ◽  
Lucas Carlstrom ◽  
Christopher Graffeo ◽  
David Daniels ◽  
...  
Keyword(s):  
3D Printed ◽  
Approach To Teaching ◽  
Case Based

849-P: Accuracy and Precision of Continuous Glucose Monitoring (CGM) in Hospitalized Patients Undergoing Radiology Procedures

Diabetes ◽  
2020 ◽  
Vol 69 (Supplement 1) ◽  
pp. 849-P ◽  
Author(s):  
ALEXANDRA MIGDAL ◽  
ELIAS SPANAKIS ◽  
RODOLFO J. GALINDO ◽  
GEORGIA DAVIS ◽  
LAKSHMI G. SINGH ◽  
...  
Keyword(s):  
Continuous Glucose Monitoring ◽  
Glucose Monitoring ◽  
Hospitalized Patients ◽  
Accuracy And Precision
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