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Rekawek P, Yoshikane F, Fleisher KE. Reconstruction of an Atrophic Mandibular Fracture via a Customized, Intraoral Approach: A Novel Technique in the Treatment of Atrophic Mandibular Fractures. J Oral Maxillofac Surg 2022. [DOI: 10.1016/j.joms.2022.07.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Gianos E, Jackson EA, Tejpal A, Aspry K, O'Keefe J, Aggarwal M, Jain A, Itchhaporia D, Williams K, Batts T, Allen KE, Yarber C, Ostfeld RJ, Miller M, Reddy K, Freeman AM, Fleisher KE. Oral health and atherosclerotic cardiovascular disease: A review. Am J Prev Cardiol 2021; 7:100179. [PMID: 34611631 PMCID: PMC8387275 DOI: 10.1016/j.ajpc.2021.100179] [Citation(s) in RCA: 5] [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] [Indexed: 12/20/2022] Open
Abstract
Periodontal disease (PD) is common in the US and globally. Evidence suggests that poor oral health is associated with atherosclerotic cardiovascular disease (ASCVD); however, this relationship has not been a major focus in clinical cardiology. This manuscript will review the growing evidence linking PD to ASCVD, including pathophysiologic mechanisms and coexistent risk factors. Public health considerations with a focus on disparities, social determinants, preventive strategies, and a call to action to reduce the burden of coincident ASCVD and PD are also reviewed.
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Affiliation(s)
- Eugenia Gianos
- Division of Cardiology, Lenox Hill Hospital, Northwell Health, New York, NY, United States
| | - Elizabeth A Jackson
- Division of Cardiovascular Disease, Department of Internal Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Astha Tejpal
- Division of Cardiology, Lenox Hill Hospital, Northwell Health, New York, NY, United States
| | - Karen Aspry
- Lifespan Cardiovascular Institute, and Division of Cardiology, Brown University, Alpert Medical School, Providence, RI, United States
| | - James O'Keefe
- Saint Luke's Mid America Heart Institute and University of Missouri-Kansas City School of Medicine, Kansas City, MI, United States
| | - Monica Aggarwal
- Division of Cardiology, University of Florida, Gainesville, FL, United States
| | - Ankur Jain
- Division of Cardiology, University of Florida, Gainesville, FL, United States
| | - Dipti Itchhaporia
- Jeffrey M. Carlton Heart & Vascular Institute, Hoag Memorial Hospital, Newport Beach, CA, United States
| | - Kim Williams
- Department of Medicine, Division of Cardiology, Rush University Medical Center, Chicago, IL, United States
| | - Travis Batts
- Division of Cardiology, Department of Medicine, Wilford Hall Ambulatory Surgical Center, San Antonio, TX, United States
| | - Kathleen E Allen
- Geisel School of Medicine at Dartmouth, Hanover, NY, United States
| | - Clark Yarber
- Department of Internal Medicine, Montefiore Health System, Bronx, NY, United States
| | - Robert J Ostfeld
- Division of Cardiology, Department of Medicine, Montefiore Health System, Bronx, NY, United States
| | - Michael Miller
- Department of Cardiovascular Medicine, Epidemiology & Public Health, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Koushik Reddy
- Division of Cardiology, James A. Haley VA Medical Center, University of South Florida, Tampa, FL, United States
| | - Andrew M Freeman
- Division of Cardiology, Department of Medicine, National Jewish Health, Denver, CO, United States
| | - Kenneth E Fleisher
- Department of Oral and Maxillofacial Surgery, NYU College of Dentistry, New York, NY, United States
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Induri SNR, Chun YC, Chun JC, Fleisher KE, Glickman RS, Xu F, Ioannidou E, Li X, Saxena D. Protective Measures against COVID-19: Dental Practice and Infection Control. Healthcare (Basel) 2021; 9:679. [PMID: 34200036 PMCID: PMC8230244 DOI: 10.3390/healthcare9060679] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/27/2021] [Accepted: 05/31/2021] [Indexed: 12/15/2022] Open
Abstract
The onset of the Coronavirus 2019 (COVID-19) pandemic has challenged the worldwide healthcare sector, including dentistry. The highly infectious nature of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus and risk of transmission through aerosol generating procedures has profoundly impacted the delivery of dental care services globally. As dental practices with renewed infection control strategies and preventive measures are re-opening in the "new normal" period, it is the responsibility of healthcare professionals to constantly analyze new data and limit the spread of COVID-19 in dental care settings. In the light of new variants of SARS-CoV-2 rapidly emerging in different geographic locations, there is an urgent need to comply more than ever with the rigorous public health measures to mitigate COVID-19 transmission. The aim of this article is to provide dental clinicians with essential information regarding the spread of SARS-CoV-2 virus and protective measures against COVID-19 transmission in dental facilities. We complied and provided guidance and standard protocols recommended by credible national and international organizations. This review will serve as an aid to navigating through this unprecedented time with ease. Here we reviewed the available literature recommended for the best current practices that must be taken for a dental office to function safely and successfully.
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Affiliation(s)
- Sri Nitya Reddy Induri
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, NY 10010, USA; (S.N.R.I.); (Y.C.C.); (F.X.); (X.L.)
| | - Yunah Caroline Chun
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, NY 10010, USA; (S.N.R.I.); (Y.C.C.); (F.X.); (X.L.)
| | | | - Kenneth E. Fleisher
- Department of Oral and Maxillofacial Surgery, College of Dentistry, New York University, New York, NY 10010, USA; (K.E.F.); (R.S.G.)
| | - Robert S. Glickman
- Department of Oral and Maxillofacial Surgery, College of Dentistry, New York University, New York, NY 10010, USA; (K.E.F.); (R.S.G.)
| | - Fangxi Xu
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, NY 10010, USA; (S.N.R.I.); (Y.C.C.); (F.X.); (X.L.)
| | - Efthimia Ioannidou
- Division of Periodontology, School of Dental Medicine, UCONN Health, Farmington, CT 06030, USA;
| | - Xin Li
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, NY 10010, USA; (S.N.R.I.); (Y.C.C.); (F.X.); (X.L.)
| | - Deepak Saxena
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, NY 10010, USA; (S.N.R.I.); (Y.C.C.); (F.X.); (X.L.)
- Department of Surgery, School of Medicine, New York University, New York, NY 10016, USA
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Margolis A, Loparich A, Raz E, Fleisher KE. Use of Intraoperative Biplanar Fluoroscopy for Minimally Invasive Retrieval of a Broken Dental Needle. J Oral Maxillofac Surg 2020; 78:1922-1925. [PMID: 32768404 DOI: 10.1016/j.joms.2020.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 11/27/2022]
Abstract
This report describes a case of needle breakage during a left-sided inferior alveolar nerve block to perform restorative dentistry on a 56-year-old male patient. The needle was removed in conjunction with interventional neuroradiology using biplanar fluoroscopy.
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Affiliation(s)
- Alexander Margolis
- Resident, Department of Oral and Maxillofacial Surgery, NYU College of Dentistry, Bellevue Hospital, NYU Langone Health, New York, NY.
| | - Alyssa Loparich
- Resident, Department of Oral and Maxillofacial Surgery, NYU College of Dentistry, Bellevue Hospital, NYU Langone Health, New York, NY
| | - Eytan Raz
- Assistant Professor Radiology, NYU Langone Health, New York, NY
| | - Kenneth E Fleisher
- Clinical Associate Professor, Department of Oral and Maxillofacial Surgery, NYU College of Dentistry, Bellevue Hospital, NYU Langone Health, New York, NY
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Lin LJ, Alfonso AR, Ross FL, Chiu ES, Fleisher KE. Management of stage 0 medication-related osteonecrosis of the jaw with hyperbaric oxygen therapy: a case report and review of the literature. Undersea Hyperb Med 2020; 47:241-251. [PMID: 32574441 DOI: 10.22462/04.06.2020.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The definition of medication-related osteonecrosis of the jaw (MRONJ) includes a stage 0 presentation where exposed bone, the hallmark of this condition, is absent. Numerous management strategies have been recommended for MRONJ including hyperbaric oxygen (HBO2) therapy. This report describes a 64-year-old woman with stage 0 MRONJ of the bilateral mandible, refractory to clindamycin and local debridement, who was subsequently managed successfully with amoxicillin/clavulanate and HBO2 therapy. The authors also explore the current literature on the pathophysiology of MRONJ and the potential role of hyperbaric oxygen in its treatment.
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Affiliation(s)
- Lawrence J Lin
- Medical Student, NYU School of Medicine, New York, New York U.S
| | - Alison R Alfonso
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, New York U.S
| | - Frank L Ross
- Department of Surgery, NYU Langone Health, New York, New York U.S
| | - Ernest S Chiu
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, New York U.S
| | - Kenneth E Fleisher
- Department of Oral and Maxillofacial Surgery, NYU College of Dentistry, New York, New York .U.S
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, New York U.S
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Pushalkar S, Li X, Kurago Z, Ramanathapuram LV, Matsumura S, Fleisher KE, Glickman R, Yan W, Li Y, Saxena D. Oral microbiota and host innate immune response in bisphosphonate-related osteonecrosis of the jaw. Int J Oral Sci 2014; 6:219-26. [PMID: 25105817 PMCID: PMC5153588 DOI: 10.1038/ijos.2014.46] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2014] [Indexed: 12/31/2022] Open
Abstract
Bacterial biofilms have emerged as potential critical triggers in the pathogenesis of bisphosphonate (BP)-related osteonecrosis of the jaw (ONJ) or BRONJ. BRONJ lesions have shown to be heavily colonized by oral bacteria, most of these difficult to cultivate and presents many clinical challenges. The purpose of this study was to characterize the bacterial diversity in BRONJ lesions and to determine host immune response. We examined tissue specimens from three cohorts (n=30); patients with periodontal disease without a history of BP therapy (Control, n=10), patients with periodontal disease having history of BP therapy but without ONJ (BP, n=5) and patients with BRONJ (BRONJ, n=15). Denaturing gradient gel electrophoresis of polymerase chain reaction (PCR)-amplified 16S rRNA gene fragments revealed less bacterial diversity in BRONJ than BP and Control cohorts. Sequence analysis detected six phyla with predominant affiliation to Firmicutes in BRONJ (71.6%), BP (70.3%) and Control (59.1%). Significant differences (P<0.05) in genera were observed, between Control/BP, Control/BRONJ and BP/BRONJ cohorts. Enzyme-linked immunosorbent assay (ELISA) results indicated that the levels of myeloperoxidase were significantly lower, whereas interleukin-6 and tumor necrosis factor-alpha levels were moderately elevated in BRONJ patients as compared to Controls. PCR array showed significant changes in BRONJ patients with downregulation of host genes, such as nucleotide-binding oligomerization domain containing protein 2, and cathepsin G, the key modulators for antibacterial response and upregulation of secretory leukocyte protease inhibitor, proteinase 3 and conserved helix-loop-helix ubiquitous kinase. The results suggest that colonization of unique bacterial communities coupled with deficient innate immune response is likely to impact the pathogenesis of ONJ.
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Affiliation(s)
- Smruti Pushalkar
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, USA
| | - Xin Li
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, USA
| | - Zoya Kurago
- Department of Oral and Maxillofacial Pathology, Radiology and Medicine, New York University College of Dentistry, New York, USA
| | - Lalitha V Ramanathapuram
- Department of Oral and Maxillofacial Pathology, Radiology and Medicine, New York University College of Dentistry, New York, USA
| | - Satoko Matsumura
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, USA
| | - Kenneth E Fleisher
- Department of Oral and Maxillofacial Surgery, New York University College of Dentistry, New York, USA
| | - Robert Glickman
- Department of Oral and Maxillofacial Surgery, New York University College of Dentistry, New York, USA
| | - Wenbo Yan
- Department of Biology, Nyack College, New York, USA
| | - Yihong Li
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, USA
| | - Deepak Saxena
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, USA
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Fleisher KE, Jolly A, Venkata UDC, Norman RG, Saxena D, Glickman RS. Osteonecrosis of the jaw onset times are based on the route of bisphosphonate therapy. J Oral Maxillofac Surg 2012; 71:513-9. [PMID: 22999296 DOI: 10.1016/j.joms.2012.07.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 07/25/2012] [Accepted: 07/26/2012] [Indexed: 12/21/2022]
Abstract
PURPOSE Osteonecrosis of the jaw (ONJ) has been reported to be associated with patients receiving bisphosphonate (BP) therapy. There are many reports that suggest that the time of exposure to BPs is a significant risk factor for ONJ and that the greatest risk occurs after dentoalveolar surgery. The aim of this study was to retrospectively investigate the duration of BP therapy and related events before the onset of ONJ based on an intravenous (IV) or oral route of administration. MATERIALS AND METHODS We conducted a retrospective cohort study of patients referred to our institution to identify the onset of ONJ based on the exposure to BP therapy and associated triggers (ie, dentoalveolar surgery or spontaneous occurrence) based on the route of BP administration. Demographic data (ie, age, gender, and race), medical diagnosis related to BP therapy, and information as to whether the BP therapy was continued at the time of ONJ diagnosis were also collected. RESULTS We reviewed the records for 114 patients with a history of ONJ. We divided patient cohorts by route of BP administration, with 76 patients having a history of IV BP therapy and 38 patients having a history of oral BP therapy. The overall onset of ONJ was earlier in the IV BP group (median, 3 years) compared with the oral BP group (median, 5 years). There was no statistical difference in the duration to occurrence of ONJ associated with dental extraction compared with spontaneous occurrence for both the IV and oral BP groups. CONCLUSIONS The median onset of ONJ for patients undergoing IV BP therapy occurs earlier than the median onset for patients undergoing oral BP therapy, and there was no difference in onset occurring spontaneously and after dental extraction. The significance of these findings suggests that patients who receive IV BP therapy should be closely evaluated after the initiation of BP therapy. The lack of evidence suggesting greater onset after dental extraction may provide clinical support for dentoalveolar surgery that is indicated for patients with a history of BP therapy. Research focusing on the clinical circumstances and physiologic events during early antiresorptive therapy may provide insight as to the critical risk factors.
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Affiliation(s)
- Kenneth E Fleisher
- Department of Oral and Maxillofacial Surgery, New York University College of Dentistry, New York, NY 10010, USA.
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Sacks PG, Zhao ZL, Kosinska W, Fleisher KE, Gordon T, Guttenplan JB. Concentration dependent effects of tobacco particulates from different types of cigarettes on expression of drug metabolizing proteins, and benzo(a)pyrene metabolism in primary normal human oral epithelial cells. Food Chem Toxicol 2011; 49:2348-55. [PMID: 21722697 PMCID: PMC3182574 DOI: 10.1016/j.fct.2011.06.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 06/14/2011] [Accepted: 06/15/2011] [Indexed: 01/10/2023]
Abstract
The ability of tobacco smoke (TS) to modulate phase I and II enzymes and affect metabolism of tobacco carcinogens is likely an important factor in its carcinogenicity. For the first time several types of TS particulates (TSP) were compared in different primary cultured human oral epithelial cells (NOE) for their abilities to affect metabolism of the tobacco carcinogen, (BaP) to genotoxic products, and expression of drug metabolizing enzymes. TSP from, reference filtered (2RF4), mentholated (MS), reference unfiltered, (IR3), ultra low tar (UL), and cigarettes that primarily heat tobacco (ECL) were tested. Cells pretreated with TSP concentrations of 0.2-10 μg/ml generally showed increased rates of BaP metabolism; those treated with TSP concentrations above 10 μg/ml showed decreased rates. Effects of TSPs were similar when expressed on a weight basis. Weights of TSP/cigarette varied in the order: MS≈IR3>2RF4>ECL>UL. All TSPs induced the phase I proteins, cytochrome P450 1A1 (CYP1A1) and 1B1 (CYP1B1), phase II proteins, NAD(P)H dehydrogenase quinone 1 (NQO1), and microsomal glutathione S-transferase 1 (MGST1), and additionally, hydroxysteroid (17-beta) dehydrogenase 2 (HSD17B2), as assessed by qRT-PCR. The pattern of gene induction at probable physiological levels favored activation over detoxification.
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Affiliation(s)
- Peter G. Sacks
- New York University College of Dentistry, Dept of Basic Science, New York, NY 10010
| | - Zhong-Lin Zhao
- New York University College of Dentistry, Dept of Basic Science, New York, NY 10010
| | - Wieslawa Kosinska
- New York University College of Dentistry, Dept of Basic Science, New York, NY 10010
| | - Kenneth E. Fleisher
- New York University College of Dentistry, Dept of Basic Science, New York, NY 10010
| | - Terry Gordon
- NYU School of Medicine, Dept of Environmental Medicine, New York, NY 10010
| | - Joseph B. Guttenplan
- New York University College of Dentistry, Dept of Basic Science, New York, NY 10010
- NYU School of Medicine, Dept of Environmental Medicine, New York, NY 10010
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Fleisher KE, Welch G, Kottal S, Craig RG, Saxena D, Glickman RS. Predicting risk for bisphosphonate-related osteonecrosis of the jaws: CTX versus radiographic markers. ACTA ACUST UNITED AC 2010; 110:509-16. [DOI: 10.1016/j.tripleo.2010.04.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 04/02/2010] [Accepted: 04/11/2010] [Indexed: 10/19/2022]
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Fleisher KE. S114: Current Strategies for the Diagnosis, Prevention, and Treatment of Bisphosphonate-Related Osteonecrosis of the Jaw. J Oral Maxillofac Surg 2009. [DOI: 10.1016/j.joms.2009.05.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fleisher KE, Doty S, Kottal S, Phelan J, Norman RG, Glickman RS. Tetracycline-guided debridement and cone beam computed tomography for the treatment of bisphosphonate-related osteonecrosis of the jaw: a technical note. J Oral Maxillofac Surg 2008; 66:2646-53. [PMID: 19022151 DOI: 10.1016/j.joms.2008.07.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2008] [Accepted: 07/02/2008] [Indexed: 12/31/2022]
Affiliation(s)
- Kenneth E Fleisher
- Department of Oral and Maxillofacial Surgery, New York University College of Dentistry, New York University Medical Center, Bellevue Hospital Center, New York, NY 10010, USA.
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Fleisher KE, Krieger AC. Current trends in the treatment of obstructive sleep apnea. J Oral Maxillofac Surg 2007; 65:2056-68. [PMID: 17884538 DOI: 10.1016/j.joms.2006.11.058] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2006] [Revised: 06/22/2006] [Accepted: 11/01/2006] [Indexed: 12/21/2022]
Abstract
Obstructive sleep apnea (OSA) is a condition of partial or complete upper airway obstruction leading to increased resistance to airflow and potential cessation of breathing during sleep. Effective treatment of OSA is challenging and there has been greater recognition by the medical and dental disciplines. By understanding the rationale, indications, benefits, risks and success of the various treatment options available, clinicians will be able to make more informed treatment recommendations in patient management.
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Affiliation(s)
- Kenneth E Fleisher
- Department of Oral and Maxillofacial Surgery, New York University College of Dentistry, New York University Medical Center, and Bellevue Hospital Center, New York, NY, USA
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Wang EY, Mulholland TP, Pramanik BK, Nusbaum AO, Babb J, Pavone AG, Fleisher KE. Dynamic sagittal half-Fourier acquired single-shot turbo spin-echo MR imaging of the temporomandibular joint: initial experience and comparison with sagittal oblique proton-attenuation images. AJNR Am J Neuroradiol 2007; 28:1126-32. [PMID: 17569972 PMCID: PMC8134137 DOI: 10.3174/ajnr.a0487] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Our aim was to assess dynamic half-Fourier acquired single-shot turbo spin-echo (HASTE) MR imaging of the temporomandibular joint (TMJ) using parallel imaging, in comparison with static proton density (Pd) imaging. MATERIALS AND METHODS Thirty-four TMJs from 17 subjects (7 volunteers, 10 patients) were imaged in a multichannel head coil on a 1.5 T magnet by using a 35-second dynamic sagittal HASTE acquisition (TR/TE, 1180/65 msec; matrix, 128 x 128; section thickness, 7 mm; 30 images) and sagittal oblique Pd in closed- and open-mouthed positions (TR/TE, 1800/12 msec; matrix, 256 x 256; section thickness, 2 mm; 15 sections). Images were reviewed by 3 readers and rated for confidence of disk position, presence of motion artifact, range of motion, and presence of disk displacement on a 5-point scale. Consensus review of cases was also performed to assess disk dislocation and limited range of motion. RESULTS More static examinations were rated as having motion artifact (19.6% versus 6.9%, P=.016), limited range of motion (30.4% versus 17.7%, P=.016), and disk dislocations (31.4% versus 22.6%, P=.071). Confidence ratings were higher on dynamic examinations (4.11 versus 3.74, P=.018). Chi-squared tests demonstrated no significant difference in consensus reviews of the 2 examination types. CONCLUSION Dynamic HASTE TMJ MR imaging is a time-efficient adjunct to standard MR imaging protocols, producing fewer motion artifacts, additional range of motion information, and a dynamic assessment of disk position, when compared with static imaging. Further study is needed to evaluate the role of this sequence in diagnosing disk displacement.
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Affiliation(s)
- E Y Wang
- Department of Radiology, New York University School of Medicine, New York, NY 10016, USA.
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14
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Vigneswaran N, Beckers S, Waigel S, Mensah J, Wu J, Mo J, Fleisher KE, Bouquot J, Sacks PG, Zacharias W. Increased EMMPRIN (CD 147) expression during oral carcinogenesis. Exp Mol Pathol 2006; 80:147-59. [PMID: 16310185 DOI: 10.1016/j.yexmp.2005.09.011] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2005] [Accepted: 09/21/2005] [Indexed: 11/27/2022]
Abstract
Gene expression profiling of oral premalignant (OPM) cells and normal oral epithelial (NOR) cells showed that EMMPRIN expression was markedly upregulated in OPM cells compared to NOR cells. We used an oral squamous cell carcinoma (OSCC) progression model composed of cell lines, organotypic cultures and tissue specimens to characterize EMMPRIN expression patterns by microarray analysis, qRT-PCR, Western blotting and immunohistochemistry. EMMPRIN levels are elevated in OPM and primary and metastatic OSCC cells as compared to NOR. EMMPRIN was detected as high and low glycosylated forms in the OPM and OSCC cellular extracts and was released in the media by OSCC cells but not by OPM cells. EMMPRIN expression in an organotypic culture model of normal and OPM mucosae mirrored the expression patterns in the respective tissues in vivo. EMMPRIN expression was limited to basal cells of normal, benign hyperkeratotic and inflammatory (lichen planus) oral mucosa. EMMPRIN expression is increased in dysplastic leukoplakias spreading to more superficial layers, and its expression levels correlated significantly with the degree of dysplasia. Primary and metastatic OSCC showed strong cell surface expression of EMMPRIN. These results suggest that EMMPRIN overexpression occurs at a very early stage of oral carcinogenesis and plays a contributing role in OSCC tumorigenesis.
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Affiliation(s)
- Nadarajah Vigneswaran
- Department of Diagnostic Sciences, The University of Texas Health Science Center at Houston, Dental Branch, 6516 M.D. Anderson Blvd., Room 3.094G, Houston, TX 77030, USA.
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15
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Affiliation(s)
- Kenneth E Fleisher
- Department of Oral and Maxillofacial Surgery, New York University College of Dentistry, 345 East 24th Street, New York, NY 10010, USA.
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16
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Affiliation(s)
- K E Fleisher
- Oral and Maxillofacial Surgery, University of Miami School of Medicine/Jackson Memorial Hospital, FL 33146, USA
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Fleisher KE, Stevens MR. Diagnosis and management of inferior alveolar nerve injury. Compend Contin Educ Dent 1995; 16:1028-1040. [PMID: 8603307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- K E Fleisher
- Department of Surgery, Division of Oral and Maxillofacial Surgery, University of Miami School of Medicine, Florida, USA
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