scholarly journals Application of 3D tooth model for monitoring of implant space and inter-root distance without radiographs: A proof of concept study

2020 ◽  
Author(s):  
Mirinae Park ◽  
Kyung-Min Lee
Keyword(s):  
Radiation Exposure ◽  
Alveolar Bone ◽  
Tooth Movement ◽  
Treatment Evaluation ◽  
Post Treatment ◽  
Proof Of Concept ◽  
Concept Study ◽  
Cbct Image ◽  
Software Program ◽  
Root Position

Abstract Background Radiographs are integral for evaluating of implant space and inter-root distance. The purpose of this report is to introduce a method for evaluating 3D root position with minimal radiation using 3D tooth model which is composed of intraoral-scanned crown and CBCT-scanned root. Materials and methods An intraoral scan and CBCT scan of the patient were obtained before treatment. In the CBCT image, tooth segmentation was performed by isolating individual tooth from the maxillary and mandibular alveolar bone using software program. By combining segmented individual tooth with the intraoral scan, consequently, 3D tooth model was fabricated. Results After treatment, the additional intraoral scan at post-treatment was integrated into the tooth model and the resulting position of the root could be predicted without additional radiographs. It is possible to monitor the root position using 3D tooth model without the need for additional radiographs after a pretreatment CBCT scan. Conclusion The application of 3D tooth model benefits the patient by reducing radiation exposure while providing the clinician with a precise treatment evaluation for monitoring tooth movement.

scholarly journals Application of 3D tooth model for monitoring of implant space and inter-root distance without radiographs: a proof of concept study

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Kyungmin Lee ◽  
Gyu-Hyoung Lee
Keyword(s):  
Computed Tomography ◽  
Radiation Exposure ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Tooth Movement ◽  
Treatment Evaluation ◽  
Cone Beam ◽  
Proof Of Concept ◽  
Cbct Image ◽  
Root Position

Abstract Background Radiographs are integral in evaluating implant space and inter-root distance. The purpose of this report is to introduce a method for evaluating the 3D root position with minimal radiation using a 3D tooth model composed of an intraoral-scanned crown and a cone-beam computed tomography (CBCT)-scanned root. Materials and methods Intraoral scan and CBCT scan of the patient were obtained before treatment. In the CBCT image, tooth segmentation was performed by isolating individual teeth from the maxillary and mandibular alveolar bone using software program. The 3D tooth model was fabricated by combining segmented individual teeth with the intraoral scan. Results A post-treatment intraoral scan was integrated into the tooth model, and the resulting position of the root could be predicted without additional radiographs. It is possible to monitor the root position after a pretreatment CBCT scan using a 3D tooth model without additional radiographs. Conclusion The application of the 3D tooth model benefits the patient by reducing repeated radiation exposure while providing the clinician with a precise treatment evaluation to monitor tooth movement.

scholarly journals Peripheral Interventions Radiation Exposure Reduction using a Sensor-Based Navigation System: a proof-of-concept study.

CJC Open ◽  
2021 ◽  
Author(s):  
Philippe L. L’Allier ◽  
Louis-Philippe Richer ◽  
Luke C. McSpadden ◽  
Jean-François Dorval
Keyword(s):  
Radiation Exposure ◽  
Navigation System ◽  
Proof Of Concept ◽  
Concept Study ◽  
Exposure Reduction ◽  
System A

scholarly journals Three-dimensional evaluation of root position at the reset appointment without radiographs: a proof-of-concept study

2018 ◽  
Vol 19 (1) ◽  
Author(s):  
Robert J. Lee ◽  
Sarah Pi ◽  
Justyn Park ◽  
Gerald Nelson ◽  
David Hatcher ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Proof Of Concept ◽  
Concept Study ◽  
Root Position

scholarly journals A proof of concept study for wastewater reuse using bioelectrochemical processes combined with complementary post-treatment technologies

2019 ◽  
Vol 5 (8) ◽  
pp. 1489-1498 ◽  
Author(s):  
Waris Khan ◽  
Joo-Youn Nam ◽  
Hyoungmin Woo ◽  
Hodon Ryu ◽  
Sungpyo Kim ◽  
...  
Keyword(s):  
Wastewater Reuse ◽  
Electrochemical Treatment ◽  
Post Treatment ◽  
Proof Of Concept ◽  
Concept Study ◽  
Treatment Technologies ◽  
Successful Removal ◽  
Removal Of Contaminants

Microbial electrochemical treatment was integrated with phycoremediation and photolytic oxidation (UV/H2O2) for wastewater reuse, achieving successful removal of contaminants.

Combined endovascular coiling and intra-aneurysmal allogeneic mesenchymal stromal cell therapy for intracranial aneurysms in a rabbit model: a proof-of-concept study

2016 ◽  
Vol 9 (7) ◽  
pp. 707-712 ◽  
Author(s):  
Amin Adibi ◽  
Muneer Eesa ◽  
John H Wong ◽  
Arindom Sen ◽  
Alim P Mitha
Keyword(s):  
Treatment Group ◽  
Cell Therapy ◽  
Intracranial Aneurysms ◽  
Post Treatment ◽  
Vehicle Group ◽  
Control Group ◽  
Proof Of Concept ◽  
Allogeneic Mscs ◽  
Concept Study ◽  
Significant Difference

ObjectiveTo assess the feasibility and efficacy of clinically translatable adjuvant mesenchymal stem/stromal cells (MSCs) therapy in improving the healing of coiled aneurysms in a rabbit elastase aneurysm model.MethodsBone marrow-derived MSC populations were isolated from three rabbit donors in a serum-free environment and independently characterized to confirm their identity. Elastase-induced carotid aneurysms were created in nine New Zealand white rabbits. Each animal received one of the following treatments based on previous randomization: (1) coiling alone (control group); (2) coiling with an intra-aneurysmal injection of saline (vehicle group); and (3) coiling with an intra-aneurysmal injection of 5 million allogeneic MSCs (treatment group). The animals were followed for 4 weeks post-treatment, at the end of which blinded analyses of angiograms and histology were performed.ResultsHistological results in the treatment group showed improvements over the control and vehicle groups, although the improvement over the vehicle group was not significant. Intra-aneurysmal cell therapy with 5 million allogeneic MSCs did not result in any major adverse events. Angiographic results did not show any significant difference among groups.ConclusionsThis proof-of-concept study shows that adjuvant MSC therapy for intracranial aneurysms is feasible and may enhance histological improvement of coiled aneurysms at 4 weeks post-treatment.

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