DOES PRESTERILIZATION HAS ANY INFLUENCE ON CONSERVATIVE AND ENDODONTIC MATERIAL STERILITY, IMMEDIATELY AFTER UNPACKING AND POST EXPOSURE TO CLINICAL ENVIRONMENT FOR 15 DAYS - AN EX VIVO STUDY.

Background: Instruments used in the operative area are colonised by various microbial organisms during usage. Sterilization is an important prerequisite to avoid cross contamination. Purpose of the study: The purpose of this study was to evaluate whether presterilization has any influence on conservative and endodontic material sterility, immediately after unpacking and post exposure to clinical environment for 15 days. Methods: Gutta percha cones, Rubber dam clamps, Impression trays, Dental burs (#245 bur, Access opening bur) were tested.Materials were randomly sampled at 2 time points (t0, at package opening; t1, at 15days) during their clinical usage. Vortexing, centrifuging, streak and inoculation was done. Colony formation under aerobic conditions was observed on media before and after presterilization. Statistical analysis: Wilcoxon matched pairs test was done for comparison of data before and after pre sterilization with status of aerobic organisms at to (immediately after opening) and t1 (during clinical usage). Conclusion: Presterilization effectively eliminates cross contamination of various aerobic microorganisms in conservative and endodontic material immediately unpacked and post exposure to clinical environment for 15 days.

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Interactions between programmable shunt valves and magnetically controlled growing rods for scoliosis

Journal of Neurosurgery Pediatrics ◽

10.3171/2020.6.peds20299 ◽

2020 ◽

Vol 26 (6) ◽

pp. 667-670

Author(s):

Thomas Larrew ◽

Mohammed Alshareef ◽

Robert F. Murphy ◽

Ramin Eskandari ◽

Libby Kosnik Infinger

Keyword(s):

Remote Control ◽

Ex Vivo ◽

Shunt Valve ◽

Growing Rods ◽

Growing Rod ◽

Before And After ◽

Magnetically Controlled Growing Rods ◽

Ex Vivo Study

OBJECTIVEAlthough the advent of magnetic growing rod technology for scoliosis has provided a means to bypass multiple hardware lengthening operations, it is important to be aware that many of these same patients have a codiagnosis of hydrocephalus with magnet-sensitive programmable ventricular shunts. As the magnetic distraction of scoliosis rods has not previously been described to affect the shunt valve setting, the authors conducted an investigation to characterize the interaction between the two devices.METHODSIn this ex vivo study, the authors carried out 360 encounters between four different shunt valve types at varying distances from the magnetic external remote control (ERC) used to distract the growing rods. Valve settings were examined before and after every interaction with the remote control to determine if there was a change in the setting.RESULTSThe Medtronic Strata and Codman Hakim valves were found to have setting changes at distances of 3 and 6 inches but not at 12 inches. The Aesculap proGAV and Codman Certas valves, typically described as MRI-resistant, did not have any setting changes due to the magnetic ERC regardless of distance.CONCLUSIONSAlthough it is not necessary to check a shunt valve after every magnetic distraction of scoliosis growing rods, if there is concern that the magnetic ERC may have been within 12 inches (30 cm) of a programmable ventricular shunt valve, the valve should be checked at the bedside with a programmer or with a skull radiograph along with postdistraction scoliosis radiographs.

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Evaluation of an overlapping pubic and ischiatic osteotomy for the improvement of acetabular ventroversion in dogs: an ex vivo study

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.3415/vcot-16-01-0018 ◽

2016 ◽

Vol 29 (06) ◽

pp. 499-506

Author(s):

James Roush ◽

David Biller ◽

Julie Gervais

Keyword(s):

Ex Vivo ◽

Single Session ◽

Surgical Equipment ◽

Minimal Impact ◽

Computed Tomography Images ◽

Pelvic Inlet ◽

Before And After ◽

Patients At Risk ◽

Canine Hip Dysplasia ◽

Ex Vivo Study

SummaryObjectives: To assess the potential of a new single-session surgical procedure, the overlapping pubic and ischiatic osteotomy (OPIO) for modification of bilateral hip conformation. We hypothesized that OPIO would be simple to perform with currently available surgical equipment, through a single surgical approach, with minimal potential morbidity, and that it would allow adequate simultaneous bilateral improvement of coxofemoral joint conformation in patients at risk of canine hip dysplasia.Methods: The OPIO procedure was performed in the pelves of five large breed canine cadavers. Computed tomography images of each cadaver were compared by measurement of the dorsal acetabular rim angle (DARA), acetabular angle (AA), dorso-ventral sacroiliac ratio (SR), and pubic inlet area before and after OPIO.Results: Coxofemoral joint conformation was improved after OPIO. Postoperative DARA was significantly decreased (mean: –5.09°) and AA was significantly increased (mean: 3.54°) after OPIO. The SR was not significantly different after OPIO, indicating minimal impact on the sacro-illiac joints by the procedure. Pubic inlet dimensions and area were significantly decreased after OPIO, but the overall effect on pelvic inlet area was clinically insignificant.Clinical significance: An OPIO allows some improvement of coxofemoral joint conformation in canine cadavers.

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Computed Tomographic Tenography of Normal Equine Digital Flexor Tendon Sheath: An Ex Vivo Study

Veterinary Medicine International ◽

10.1155/2015/903169 ◽

2015 ◽

Vol 2015 ◽

pp. 1-5 ◽

Cited By ~ 6

Author(s):

Luca Lacitignola ◽

Pasquale De Luca ◽

Alessandro Guarracino ◽

Antonio Crovace

Keyword(s):

Flexor Tendon ◽

Ex Vivo ◽

Tendon Sheath ◽

Computed Tomographic ◽

Contrast Enhanced ◽

Superficial Digital Flexor Tendon ◽

Before And After ◽

Flexor Tendon Sheath ◽

The Common ◽

Ex Vivo Study

Aim of this study was to document the normal computed tomographic tenography findings of digital flexor tendon sheath. Six ex vivo normal equine forelimbs were used. An axial approach was used to inject 185 mg/mL of iopamidol in a total volume of 60 mL into the digital flexor tendon sheaths. Single-slice helical scans, with 5 mm thickness, spaced every 3 mm, for a pitch of 0.6, and with bone algorithm reconstruction, were performed before and after injections of contrast medium. To obtain better image quality for multiplanar reconstruction and 3D reformatting, postprocessing retroreconstruction was performed to reduce the images to submillimetre thickness. Computed tomographic tenography of digital flexor tendon sheaths could visualize the following main tendon structures for every forelimb in contrast-enhanced images as low densities surrounded by high densities: superficial digital flexor tendon, deep digital flexor tendon, manica flexoria, mesotendons, and synovial recess. Results of this study suggest that computed tomographic tenography can be used with accuracy and sensitivity to evaluate the common disorders of the equine digital flexor tendon sheath and the intrathecal structures.

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Feasibility of Cone-beam Computed Tomography in Detecting Lateral Canals before and after Root Canal Treatment: An Ex Vivo Study

Journal of Endodontics ◽

10.1016/j.joen.2017.01.025 ◽

2017 ◽

Vol 43 (6) ◽

pp. 1014-1017 ◽

Cited By ~ 5

Author(s):

Thiago Oliveira Sousa ◽

Bassam Hassan ◽

Hesam Mirmohammadi ◽

Hagay Shemesh ◽

Francisco Haiter-Neto

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Ex Vivo ◽

Root Canal Treatment ◽

Cone Beam ◽

Before And After ◽

Ex Vivo Study

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Effect of customization of master gutta-percha cone on apical control of root filling using different techniques: an ex vivo study

International Endodontic Journal ◽

10.1111/j.1365-2591.2005.01005.x ◽

2005 ◽

Vol 38 (9) ◽

pp. 658-666 ◽

Cited By ~ 13

Author(s):

S. P. van Zyl ◽

K. Gulabivala ◽

Y.-L. Ng

Keyword(s):

Ex Vivo ◽

Gutta Percha ◽

Apical Control ◽

Ex Vivo Study

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Effects of Dall-Miles Cables on the Cement Mantle in Total Hip Arthroplasty: A Cadaveric Study

Hip International ◽

10.1177/112070000301300105 ◽

2003 ◽

Vol 13 (1) ◽

pp. 29-31

Author(s):

R. Kingston ◽

J. Noël ◽

B. Murphy ◽

T. C Lee ◽

M.G. Walsh

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Hip Arthroplasty ◽

Ex Vivo ◽

Cement Mantle ◽

Control Group ◽

Before And After ◽

Diamond Saw ◽

Ex Vivo Study ◽

Scanning Electron

Dall-Miles cables are widely used for trochanteric re-attachment in hip arthroplasty, but their effects on the cement mantle have not been reported. We have carried out an ex vivo study to investigate the influence of cables on the mantle. Charnley femoral components were implanted in eight proximal human femora using Palacos cement. Wires (control group, n=4) or 2mm stainless steel Dall-Miles cables (n=4) were passed through holes drilled in the proximal femur before the cement was introduced. The wires or cables were tightened using the appropriate instruments after the cement had hardened. The specimens were sectioned using a diamond saw, and examined by scanning electron microscopy and light microscopy before and after staining with penetrant dye. Deformation of the strands at the tension edge of each cable, with debonding from the cement in two specimens, was observed. There was no damage to cement at the compression edge. Tensioning of Dall-Miles cables passing through Palacos cement does not appear to damage the mantle.

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