- The effects of photodynamic therapy on postoperative pain in teeth with necrotic pulps. [Journal Article]
- PPPhotodiagnosis Photodyn Ther 2019 Jul 10
- The effects of photodynamic therapy on postoperative pain in teeth with necrotic pulps This study aimed to determine the effects of photodynamic therapy (PDT) on postoperative pain after treatments o…
The effects of photodynamic therapy on postoperative pain in teeth with necrotic pulps This study aimed to determine the effects of photodynamic therapy (PDT) on postoperative pain after treatments of teeth with necrotic pulps. This randomized clinical trial consisted of 60 patients who presented for treatment of asymptomatic teeth. The patients were randomly assigned into the Control Group (CG) or the PDT Group (PG). The canals were instrumented with a reciprocating instrument (50.05) under 2.5% NaOCL irrigation. After instrumentation was completed, the canals were flooded with 1.56 µM/mL of methylene blue (MB), the optical fiber was inserted to the working length and applied for 3 minutes (P =100 mW, t =3 minutes, E = 18 J). The device emitted PDT only for the PG. The operator and the patient were both masked to the treatment protocol. After PDT, the root canal treatment was completed and the canals were filled. A card was given to the patients to document their pain perception through the 0 to 10 visual analogue scale (VAS) at 24 hours, 72 hours, and 1-week intervals. The Mann-Whitney and Fisher´s exact tests were used for statistical analysis (P < .05). The average pain level for the CG was 1.33 at 24 -hs and 0.50 at 72 -hs; for the PG, the average pain level was 0.37 at 24 -hs and 0 at 72 -hs (P < .05). After 1-week there was no report of pain. PDT had a significant effect in decreasing postoperative pain at 24- and 72 -h intervals in treatment of single-rooted teeth with necrotic pulps performed in one visit.
- Middle Fossa Approach for Facial Nerve Schwannoma Aiming for Functional Improvement: 2-Dimensional Operative Video. [Journal Article]
- ONOper Neurosurg (Hagerstown) 2019 Jul 13
- The treatment paradigm of skull base surgery has been changed from radical tumor resection to maximal tumor removal while giving priority to functional preservation. Facial nerve schwannoma is one of…
The treatment paradigm of skull base surgery has been changed from radical tumor resection to maximal tumor removal while giving priority to functional preservation. Facial nerve schwannoma is one of the representative disorders of this type of paradigm shift.1 This video demonstrates facial nerve schwannoma surgery through the middle fossa approach, aiming for improvement of facial function. A 33-yr-old woman presented with gradually worsening facial palsy (House-Brackmann grade IV), dizziness, and nausea. Neuroimaging revealed a growing tumor involving the geniculate ganglion, and extending to the middle fossa, internal acoustic meatus, and cerebellopontine angle. The nerve-sparing surgery through the left middle fossa approach was performed under detailed neuromonitoring including the evoked facial electromyograms and auditory brainstem response. The facial nerve fibers were involved within the tumor mass and the plane between the tumor and facial nerve could not be identified as seen in most cases of such large facial nerve schwannomas. But sufficient tumor removal with facial nerve preservation was achieved owing to continuous facial monitoring.2 The patient had no new neurological deficits. Her facial palsy has been gradually improving, now at grade III, without any signs of tumor regrowth during the 10 mo of follow up after the operation. Careful follow up is being continued to survey the possible tumor recurrence. The video was reproduced after informed consent of the patient.
- Radiolabeling of amide functionalized multi-walled carbon nanotubes for bioaccumulation study in fish bone using whole-body autoradiography. [Journal Article]
- ESEnviron Sci Pollut Res Int 2019 Jul 12
- Commercial and medicinal applications of functionalized carbon nanotubes (f-CNTs) such as amidated f-CNTs are expanding rapidly with a potential risk exposure to living organisms. The effects of amid…
Commercial and medicinal applications of functionalized carbon nanotubes (f-CNTs) such as amidated f-CNTs are expanding rapidly with a potential risk exposure to living organisms. The effects of amidated f-CNTs on aquatic species have received a limited attention. In this work, an easy wet method to prepare [14C]-label amide multi-walled carbon nanotubes (MWNTs) is reported. Labeled carbon nanotubes were prepared by successive reactions of carboxylation, chloroacylation, and final amidation using [14C]-labeled ethanolamine. The f-CNTs were characterized using elemental analysis, electron dispersive X-ray, transmission electron microscopy, thermogravimetric analysis, and Raman and FTIR spectroscopy. An uptake experiment was carried out with juvenile Arctic char (Salvelinus alpinus) using water dispersed amidated [14C]-f-CNTs to assess their biodistribution in fish tissues using whole body autoradiography. The radioactivity pattern observed in fish head suggests that f-CNTs were accumulated in head bone canals, possibly involving an interaction with mineral or organic phases of bones such as calcium and collagen. This f-CNTs distribution illustrates how important is to consider the surface charges of functionalized carbon nanotubes in ecotoxicological studies.
- Outcome of Endodontic Retreatment Using 2 Root Canal Irrigants and Influence of Infection on Healing as Determined by a Molecular Method: A Randomized Clinical Trial. [Journal Article]
- JEJ Endod 2019 Jul 09
- CONCLUSIONS: No significant differences in the clinical outcome between 1% NaOCl and 2% CHX were found. Bacterial persistence at the time of filling as detected by qPCR significantly affected the outcome.
- Median Perforating Canal in Human Mandible. [Journal Article]
- JCJ Craniofac Surg 2019; 30(5):e430-e432
- Surgical interventions in the anterior region of the human mandible are associated with many complications. Some anatomical structures like the median perforating canal were discovered in mammals. Su…
Surgical interventions in the anterior region of the human mandible are associated with many complications. Some anatomical structures like the median perforating canal were discovered in mammals. Such canals may be a cause of concern that needs attention in human mandible. The purpose of the present study was to evaluate the occurrence, location, and course of median perforating canal and its associated extensions in the anterior segment of the human mandible in cone beam computed tomography scans (CBCT). Data were collected from 160 CBCT scans, and evaluated. The incidence was 23.75% for median perforating canal with wide anatomical variations concerning the related lingual and labial extensions. Median perforating canal and their associated lingual and labial foramina are frequently seen in human mandible. A thorough investigation of the symphyseal region using CBCT must be taken into account when targeting surgical intervention in this area.
- Why and when to refer patients for vestibular evoked myogenic potentials: A critical review. [Review]
- CNClin Neurophysiol 2019 May 31; 130(9):1539-1556
- Cervical and ocular vestibular evoked myogenic potentials (cVEMPs and oVEMPs respectively) are now used by an increasing number of laboratories to evaluate otolith inner ear function and their pathwa…
Cervical and ocular vestibular evoked myogenic potentials (cVEMPs and oVEMPs respectively) are now used by an increasing number of laboratories to evaluate otolith inner ear function and their pathways through the central nervous system. However, the literature is incomplete or unclear as to what information both c- and oVEMPs can add beyond what a good clinical examination can provide, and what other paramedical tests can provide also, and the present review aims to clarify what is known so far. The following review will describe what is known with regards to both c- and oVEMPs and their use. MEDLINE (accessed by PubMed, years 1994-2018) was searched with the following string: ("vestibular evoked myogenic potentials" [all fields]). Only articles published in English were evaluated. Both c- and oVEMPs are useful not only for confirming the presence of superior semicircular canal dehiscence (SSCD), but also for confirming the presence of acoustic neuromas when MRI is not available, bilateral vestibulopathies, inferior vestibular neuritis and vestibular dysfunction in inherited neuropathies. Further work is required, especially with respect to oVEMPs. The usefulness of both c- and oVEMPs goes beyond the confirmation of SSCDs, and is useful in many clinical cases.
- Patterns in ano-rectal dose maps and the risk of late toxicity after prostate IMRT. [Journal Article]
- AOActa Oncol 2019 Jul 12; :1-8
- CONCLUSIONS: To avoid fecal incontinence it is important to limit the portion of the anal canal irradiated. Our analysis confirms that rectal bleeding is a function of similar spatial dose parameters for patients treated with IMRT, compared to previous studies on patients treated with three-dimensional conformal radiotherapy.
- [Effect of pre-existing adjacent segment degeneration on short-term effectiveness after lumbar fusion surgery]. [Journal Article]
- ZXZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2019 Jul 15; 33(7):837-844
- CONCLUSIONS: Pre-existing mild spinal stenosis in adjacent segment can significantly affect the effectiveness, and can significantly increase the risk of ASD early after operation. The main pathological type of ASD was the severity of adjacent segment spinal stenosis. For preoperative assessment of pre-existing degeneration, we should evaluate the overall degeneration of the adjacent segment of the spinal canal, rather than simply evaluating the degeneration of the adjacent disc and facet joints.
- [Percutaneous full-endoscopic bilateral decompression via unilateral posterior approach for lumbar spinal stenosis]. [Journal Article]
- ZXZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2019 Jul 15; 33(7):822-830
- CONCLUSIONS: The percutaneous full-endoscopic bilateral decompression via unilateral posterior approach for LSS is a safe and effective procedure. A well-designed surgical strategy and mastery of its technical points are important guarantees for successful operation and satisfactory results.
New Search Next
- [Comparative study of microendoscope-assisted and conventional minimally invasive transforaminal lumbar interbody fusion for degenerative lumbar diseases]. [Journal Article]
- ZXZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2019 Jul 15; 33(7):814-821
- CONCLUSIONS: The medium and long-term effectiveness of microendoscope-assisted MIS-TLIF are similar to those of conventional tubular retractor-assisted MIS-TLIF for lumbar degenerative diseases. The former operation has the additional advantages in terms of more clear surgical site visually, less intraoperative blood loss, and reduced postoperative analgesic dose, all of which seem more feasible to clinical teaching.