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Bijjargi SP, Awinashe V, Kashyap R, Archana, Qattan AA, Choudhury GK, Jerry JJ, Ramaiah VV. Assessment of Static and Dynamic Load Tolerance of the Implant Mounts on its Particular Implant. J Pharm Bioallied Sci 2023; 15:S1129-S1131. [PMID: 37694013 PMCID: PMC10485438 DOI: 10.4103/jpbs.jpbs_192_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 09/12/2023] Open
Abstract
Objectives We compared the loads at which the implant holders from Astra Tech (AST) (AstraOsseoSpeed) and Osseotite Certain failed under static compression after experiencing fatigue, as well as the gap that resulted from dynamic loading between the implant-holder complexes. Materials and Method The ISO 14801 recommendation served as the foundation for the test protocol. Each brand's five implant-implant holder assemblies underwent dynamic loading. A load of 200 N was applied at a stress frequency of 12 Hz and a cycle rate of 5105. (Eden Prairie, MN, USA). Using scanning electron microscopy (S3700N, HITACHI, Japan), the gap (m) at the interface was measured post-fatigue. Static loading was then used to determine the highest load (N) after the point of failure. Controls included definitive abutment-implant complexes. Statistics were used to analyze the data. Result The Osseotite Certain group showed a slight trend toward greater resistance, but there was no diversity among the two implant holder groups (P 0.05). AST (AstraOsseoSpeed) implants had a larger interface gap, but the difference was not statistically significant. Conclusion With respect to greatest compression load or the interface gap following dynamic loading, there were no discernible differences between the two experimental groups.
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Affiliation(s)
- Supriya P Bijjargi
- Department of Prosthodontics and Crown and Bridge, PMNM Dental College and Hospital, Bagalkot, Karnataka, India
| | - Vaibhav Awinashe
- Department of Prosthodontics, College of Dentistry in Ar Rass, Qassim University, Kingdom of Saudi Arabia
| | - Rucha Kashyap
- Professor, Department of Prosthodontics, Rungta College of Dental Sciences and Research, Chhattisgarh, India
| | - Archana
- Assistant Professor, Department of Oral Pathology, Dental Department, Autonomous State Medical College, Etah, UP, India
| | - Ahmed Abdulmohsen Qattan
- Registrar, Department of Family Dentistry, MOH, Dental Clinic Complex West of Riyadh, Saudi Arabia
| | - Gopal Krishna Choudhury
- Department of Prosthodontics, Institute of Dental Sciences, Siksha ’O’ Anusandhan University, Bhubaneswar, Odisha, India
| | - Jeethu John Jerry
- Department of Periodontology, Malabar Dental College and Research, Malapuram, Kerala, India
| | - Vardarajula Venkata Ramaiah
- Department of Dental Hygienec, College of Applied Health Sciences in Ar Rass, Qassim University, Saudi Arabia
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Nieminen JO, Pospelov AS, Koponen LM, Yrjölä P, Shulga A, Khirug S, Rivera C. Transcranial magnetic stimulation set-up for small animals. Front Neurosci 2022; 16:935268. [PMID: 36440290 PMCID: PMC9685557 DOI: 10.3389/fnins.2022.935268] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 10/27/2022] [Indexed: 12/23/2023] Open
Abstract
Transcranial magnetic stimulation (TMS) is widely applied on humans for research and clinical purposes. TMS studies on small animals, e.g., rodents, can provide valuable knowledge of the underlying neurophysiological mechanisms. Administering TMS on small animals is, however, prone to technical difficulties, mainly due to their small head size. In this study, we aimed to develop an energy-efficient coil and a compatible experimental set-up for administering TMS on rodents. We applied a convex optimization process to develop a minimum-energy coil for TMS on rats. As the coil windings of the optimized coil extend to a wide region, we designed and manufactured a holder on which the rat lies upside down, with its head supported by the coil. We used the set-up to record TMS-electromyography, with electromyography recorded from limb muscles with intramuscular electrodes. The upside-down placement of the rat allowed the operator to easily navigate the TMS without the coil blocking their field of view. With this paradigm, we obtained consistent motor evoked potentials from all tested animals.
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Affiliation(s)
- Jaakko O. Nieminen
- Department of Neuroscience and Biomedical Engineering, Aalto University School of Science, Espoo, Finland
- BioMag Laboratory, HUS Medical Imaging Centre, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Biomedical Imaging Unit, A.I. Virtanen Institute, University of Eastern Finland, Kuopio, Finland
| | - Alexey S. Pospelov
- Faculty of Biological and Environmental Sciences, Molecular and Integrative Biosciences, University of Helsinki, Helsinki, Finland
- Department of Clinical Neurophysiology, BABA Center, Children’s Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
- Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Lari M. Koponen
- Department of Neuroscience and Biomedical Engineering, Aalto University School of Science, Espoo, Finland
| | - Pauliina Yrjölä
- BioMag Laboratory, HUS Medical Imaging Centre, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Clinical Neurophysiology, BABA Center, Children’s Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
- Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Anastasia Shulga
- BioMag Laboratory, HUS Medical Imaging Centre, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Physical and Rehabilitation Medicine, Helsinki University Hospital, Helsinki, Finland
| | - Stanislav Khirug
- Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Claudio Rivera
- Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- INMED (INSERM U1249), Aix-Marseille Université, Marseille, France
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Giribaldi M, Antoniazzi S, Gariglio GM, Coscia A, Bertino E, Cavallarin L. A Preliminary Assessment of HTST Processing on Donkey Milk. Vet Sci 2017; 4:vetsci4040050. [PMID: 29056708 PMCID: PMC5753630 DOI: 10.3390/vetsci4040050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/12/2017] [Accepted: 09/29/2017] [Indexed: 11/16/2022] Open
Abstract
Due to increasing attention from consumers on non-bovine milk types, and to the increase in the number of small dairy donkey farms in Italy, farmers require more advanced and reliable processing devices, in order to guarantee a safe product of high quality. To this aim, a new small-scale High-Temperature Short-Time (HTST) pasteurizer (72 °C for 15 s), prototyped by the authors, was tested on donkey milk. The efficacy of the HTST device was tested on raw donkey milk microflora by enumeration of total aerobic bacteria, Enterobacteriaceae and Bacillus cereus. The biochemical quality was assessed by determining the protein profile by monodimensional electrophoresis and by measuring lysozyme activity. The HTST apparatus was able to reduce the total bacteria count, and to completely eradicate Enterobacteriaceae. Bacillus cereus, when present, was decreased with low efficiency. Changes in the protein profile were observed in milk pasteurized in accordance with both processes, although HTST seemed to limit casein degradation. Lysozyme activity was not substantially affected in comparison to raw donkey milk. In conclusion, a tailored small-volume HTST device could be safely applied to pasteurize donkey milk in on-farm pasteurization processes on small dairy donkey farms.
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Affiliation(s)
- Marzia Giribaldi
- Consiglio per la Ricerca in Agricoltura e L'analisi Dell'economia Agraria-Centro di Ricerca in Ingegneria e Trasformazioni Agroalimentari, 10135 Torino, Italy.
- Consiglio Nazionale delle Ricerche-Istituto di Scienze delle Produzioni Alimentari, 10095 Grugliasco (To), Italy.
| | - Sara Antoniazzi
- Consiglio Nazionale delle Ricerche-Istituto di Scienze delle Produzioni Alimentari, 10095 Grugliasco (To), Italy.
| | | | - Alessandra Coscia
- Città della Salute e della Scienza-Struttura Complessa di Neonatologia, 10125 Torino, Italy.
| | - Enrico Bertino
- Città della Salute e della Scienza-Struttura Complessa di Neonatologia, 10125 Torino, Italy.
| | - Laura Cavallarin
- Consiglio Nazionale delle Ricerche-Istituto di Scienze delle Produzioni Alimentari, 10095 Grugliasco (To), Italy.
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Dietrich M, Cruz-Herranz A, Yiu H, Aktas O, Brandt AU, Hartung HP, Green A, Albrecht P. Whole-body positional manipulators for ocular imaging of anaesthetised mice and rats: a do-it-yourself guide. BMJ Open Ophthalmol 2016; 1:e000008. [PMID: 29354694 PMCID: PMC5759402 DOI: 10.1136/bmjophth-2016-000008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 09/27/2016] [Indexed: 11/10/2022] Open
Abstract
Background In vivo retinal imaging of rodents has gained a growing interest in ophthalmology and neurology. The bedding of the animals with the possibility to perform adjustments in order to obtain an ideal camera-to-eye angle is challenging. Methods We provide a guide for a cost-effective, do-it-yourself rodent holder for ocular imaging techniques. The set-up was tested and refined in over 2000 optical coherence tomography measurements of mice and rats. Results The recommended material is very affordable, readily available and easily assembled. The holder can be adapted to both mice and rats. A custom-made mouthpiece is provided for the use of inhalant anaesthesia. The holder is highly functional and assures that the rodent’s eye is the centre of rotation for adjustments in both the axial and the transverse planes with a major time benefit over unrestrained positioning of the rodents. Conclusion We believe this guide is very useful for eye researchers focusing on in vivo retinal imaging in rodents as it significantly reduces examination times for ocular imaging.
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Affiliation(s)
- Michael Dietrich
- Department of Neurology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Andrés Cruz-Herranz
- Department of Neurology, University of California, San Francisco, San Francisco, California, United States
| | - Hao Yiu
- Department of Neurology, University of California, San Francisco, San Francisco, California, United States
| | - Orhan Aktas
- Department of Neurology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Alexander U Brandt
- NeuroCure Clinical Research Center, Charite-Universitätsmedizin Berlin, Berlin, Germany
| | - Hans-Peter Hartung
- Department of Neurology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Ari Green
- Department of Neurology, University of California, San Francisco, San Francisco, California, United States
| | - Philipp Albrecht
- Department of Neurology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
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Cho HJ, Park DY, Min HJ, Chung HJ, Lee JG, Kim CH. Endoscope-guided coblator tongue base resection using an endoscope-holding system for obstructive sleep apnea. Head Neck 2015; 38:635-9. [PMID: 26560073 DOI: 10.1002/hed.24252] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Multilevel obstruction in obstructive sleep apnea commonly includes retroglossal obstruction. To improve surgical success rates, tongue volume reduction with posterior midline glossectomy and/or lingual tonsillectomy is widely performed. METHODS Nasotracheal intubation was utilized, and the combined tongue procedure was performed as a final step after palatal surgery. The tongue was pulled maximally by a retraction suture and a McIVOR (Karl Storz, Tuttlingen, Germany) or Davis mouth gag (Karl Storz,Tuttlingen, Germany), and a medium-length tongue blade was applied to expose the tongue base. A 70-degree rigid endoscope was fixed by the holding system and introduced into the oral cavity. Endoscope-guided coblator tongue base resection was then performed. RESULTS The surgeon could use both hands for the surgery, enabling a more delicate resection of tongue base tissue. CONCLUSION This technique was acceptable and can be successfully used in patients with a large tongue, in whom exposing the tongue base for surgery is difficult.
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Affiliation(s)
- Hyung-Ju Cho
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.,The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Do-Yang Park
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Jin Min
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Hyo Jin Chung
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Jeung-Gweon Lee
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Chang-Hoon Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.,The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Korea
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