1
|
Abdelnour A, Comeau N, Ashack K. Skin of Color Representation for Atopic Dermatitis on TikTok: Cross-Sectional Analysis. JMIR Dermatol 2023; 6:e48635. [PMID: 37889568 PMCID: PMC10638628 DOI: 10.2196/48635] [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: 05/01/2023] [Revised: 09/04/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Affiliation(s)
- Alyssa Abdelnour
- College of Human Medicine, Michigan State University, Grand Rapids, MI, United States
| | - Nicholas Comeau
- College of Human Medicine, Michigan State University, Grand Rapids, MI, United States
| | - Kurt Ashack
- Dermatology Associates of West Michigan, Grand Rapids, MI, United States
| |
Collapse
|
2
|
Aykaç S, Eker Büyükşireci D, Boyaci H. An analysis of neuropathic pain, vasomotor manifestations, and sympathetic skin reactions in post-COVID-19 patients relative to healthy individuals. Medicine (Baltimore) 2023; 102:e35819. [PMID: 37904350 PMCID: PMC10615396 DOI: 10.1097/md.0000000000035819] [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] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/05/2023] [Indexed: 11/01/2023] Open
Abstract
This study aims to assess the incidence of neuropathic pain, vasomotor symptoms, and sympathetic skin responses (SSR) in patients who have recovered from COVID-19 infection and contrast these findings with healthy controls. The study encompassed 56 post-COVID-19 patients and 40 healthy controls (group 1: post-COVID-19 patients, and group 2: healthy controls). The presence of autonomic dysfunction symptoms (ADS) and orthostatic hypotension following COVID-19 infection was documented in group 1. Concurrently, fatigue and forgetfulness levels were appraised using the numerical rating scale, and the leeds assessment of neuropathic symptoms and signs pain scale was deployed to probe for the incidence of neuropathic pain among participants. SSR of all participants was conducted bilaterally from median and tibial nerves using an electroneuromyographic device. Among post-COVID-19 patients, neuropathic pain was observed in 17.9% of cases. There were no notable variations in the initiation and magnitude of bilateral median and tibial nerve SSR across the 2 groups. Significant discrepancies were observed in ADS scores between groups 1 and 2 (P = .001). Furthermore, a positive correlation was established between the latencies of the left median nerve SSR and ADS scores (R = 0.339, P = .014). The SSR patterns were congruous between healthy individuals and post-COVID-19 patients. However, a higher prevalence of autonomic dysfunction symptoms and correlations among SSR, autonomic dysfunction scores, fatigue, and forgetfulness levels were identified among post-COVID-19 patients.
Collapse
Affiliation(s)
- Serdar Aykaç
- Hitit University Faculty of Medicine, Department of Neurology, Çorum, Turkey
| | - Dilek Eker Büyükşireci
- Hitit University Faculty of Medicine, Department of Physical Medicine and Rehabilitation, Çorum, Turkey
| | - Hilal Boyaci
- Hitit University Faculty of Medicine, Department of Chest Diseases, Çorum, Turkey
| |
Collapse
|
3
|
Nicholls DA, Ahlsen B, Bjorbækmo W, Dahl-Michelsen T, Höppner H, Rajala AI, Richter R, Hansen LS, Sudmann T, Sviland R, Maric F. Critical physiotherapy: a ten-year retrospective. Physiother Theory Pract 2023:1-13. [PMID: 37688439 DOI: 10.1080/09593985.2023.2252524] [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: 03/28/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023]
Abstract
Critical physiotherapy has been a rapidly expanding field over the last decade and could now justifiably be called a professional sub-discipline. In this paper we define three different but somewhat interconnected critical positions that have emerged over the last decade that share a critique of physiotherapy's historical approach to health and illness, while also diverging in the possibilities for new forms of practice and thinking. These three positions broadly align with three distinctive philosophies: approaches that emphasize lived experience, social theory, and a range of philosophies increasingly referred to as the "posts". In this paper we discuss the origins of these approaches, exploring the ways they critique contemporary physiotherapy thinking and practice. We offer an overview of the key principles of each approach and, for each in turn, suggest readings from key authors. We conclude each section by discussing the limits of these various approaches, but also indicate ways in which they might inform future thinking and practice. We end the paper by arguing that the various approaches that now fall under the rubric of critical physiotherapy represent some of the most exciting and opportune ways we might (re)think the future for the physiotherapy profession and the physical therapies more generally.
Collapse
Affiliation(s)
- David A Nicholls
- School of Clinical Sciences, A-12, Auckland University of Technology, Auckland, New Zealand
| | - Birgitte Ahlsen
- Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway
| | - Wenche Bjorbækmo
- Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway
| | - Tone Dahl-Michelsen
- Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway
| | - Heidi Höppner
- Interprofessional Health Care, University of Applied Sciences, Berlin, Germany
| | - Anna Ilona Rajala
- Faculty of Social Sciences, Unit of Social Research, Tampere University, Tampere, Finland
| | - Robert Richter
- Hochschule Furtwangen, Studienzentrum Freiburg, Freiburg, Germany
| | - Louise Søgaard Hansen
- Department for People and Technology, Centre for Health Promotion Research, Roskilde University, Roskilde, Denmark
| | - Tobba Sudmann
- Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway
| | - Randi Sviland
- Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway
| | - Filip Maric
- Department of Health and Care Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| |
Collapse
|
4
|
Cohen PR. Fist sign-associated post ambulatory swollen hands. JAAD Case Rep 2023; 36:116-118. [PMID: 37361403 PMCID: PMC10285137 DOI: 10.1016/j.jdcr.2023.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023] Open
Affiliation(s)
- Philip R. Cohen
- Department of Dermatology, University of California, Davis Medical Center, Sacramento, California
- Touro University California College of Osteopathic Medicine, Vallejo, California
| |
Collapse
|
5
|
Stueland H, Ørstavik D, Handal T. Treatment outcome of surgical and non-surgical endodontic retreatment of teeth with apical periodontitis. Int Endod J 2023; 56:686-696. [PMID: 36938637 DOI: 10.1111/iej.13914] [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: 03/29/2022] [Revised: 01/30/2023] [Accepted: 03/14/2023] [Indexed: 03/21/2023]
Abstract
AIMS To evaluate and compare the treatment outcome of root-filled teeth with apical periodontitis treated either non-surgically or by endodontic microsurgery, and to assess the influence of an intra-radicular post, clinical and demographic factors. METHODOLOGY Clinical and radiological data from 1157 patients with apical periodontitis in previously root-filled teeth treated by postgraduate students at the Department of Endodontics, University of Oslo, between September 2010 and January 2020 with recall data at least 11 months from completion were studied. Surgical cases were scored using the Rud/Molven criteria and grouped into success, uncertain or failure at control. Non-surgical cases were scored with the periapical index (PAI) and similarly grouped into success, uncertain or failure at control. Chi-square analyses were used for comparison of subgroups of teeth treated and logistic regression analyses for assessment of the influence of clinical variables. RESULTS Non-surgical retreatment was performed on 351 teeth and 107 teeth were treated with endodontic microsurgery, with overall success rates of 65.5% and 77.6%, respectively. The difference was statistically significant. Teeth with an intra-radicular post treated non-surgically (n=30) were successful in 73.3% of cases, whereas teeth with intra-radicular post treated with endodontic microsurgery (n=30) had a lower, 66.7% success rate. The distribution of tooth groups (anterior, premolar and molar) differed significantly between surgical and non-surgical cases, with maxillary anterior and premolar teeth more often treated surgically. Non-surgical retreatment cases were significantly influenced by patients' age (older patients had poorer outcome) and preoperative PAI score (negatively correlated with outcome). Surgical cases were not significantly influenced by the factors studied here. CONCLUSIONS The tooth type differed significantly for teeth treated by surgical versus non-surgical methods. Microsurgical treatment with apicectomy and retrograde filling showed significantly better treatment results than non-surgical retreatment of teeth with apical periodontitis, whereas treatment outcome in teeth with posts after non-surgical treatment tended to be better than after surgical treatment. Outcome of non-surgical retreatment was negatively influenced by older age and higher preoperative PAI score.
Collapse
Affiliation(s)
- Håvard Stueland
- Department of Endodontics, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Dag Ørstavik
- Department of Endodontics, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Trude Handal
- Department of Endodontics, Faculty of Dentistry, University of Oslo, Oslo, Norway
| |
Collapse
|
6
|
Abreu JB, Cordeiro CR, Amorim AI, Catanho TG, Gama KD. Combined neuraxial-general anesthesia in opsoclonus-myoclonus syndrome: A case report. Saudi J Anaesth 2023; 17:94-96. [PMID: 37032696 PMCID: PMC10077787 DOI: 10.4103/sja.sja_558_22] [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: 07/31/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 12/24/2022] Open
Abstract
Opsoclonus-myoclonus syndrome (OMS) is a very rare neurological disorder thought to be the result of autoimmune responses in the nervous system. The relationship between this disorder and anesthesia procedures has not been studied in detail. To our knowledge, there are only 4 case reports, none of them with epidural-general combined anesthesia. We present a 9-year-old female with OMS due to low-grade neuroblastoma, for 7 years, who underwent tumor remotion due to the large size. Intravenous induction was done with alfentanil, lidocaine, propofol and rocuronium and ropivacaine was administered via lumbar epidural catheter. Adding to the sparse anesthetic management information in OMS, we now show one more possible approach, that can be valuable in high-risk cases, where general anesthesia can be involved with higher risk for the patient.
Collapse
Affiliation(s)
- João B. Abreu
- Department of Anesthesiology, Hospital Central do Funchal, Funchal, Portugal
| | - Catarina R. Cordeiro
- Department of Psychiatry Critical Care, Centro Hospitalar Universitário Lisboa Norte, Faculdade de Medicina da Universidade de Lisboa, Lisboa, Portugal
| | - Ana I. Amorim
- Department of Anesthesiology, Hospital Central do Funchal, Funchal, Portugal
| | - Tiago G. Catanho
- Department of Critical Care, Hospital Central do Funchal, Funchal, Portugal
| | - Karina D. Gama
- Department of Anesthesiology, Hospital Central do Funchal, Funchal, Portugal
| |
Collapse
|
7
|
Mannocci F, Bitter K, Sauro S, Ferrari P, Austin R, Bhuva B. Present status and future directions: The restoration of root filled teeth. Int Endod J 2022; 55 Suppl 4:1059-1084. [PMID: 35808836 PMCID: PMC9796050 DOI: 10.1111/iej.13796] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 12/30/2022]
Abstract
This narrative review will focus on a number of contemporary considerations relating to the restoration of root filled teeth and future directions for research. Clinicians are now more than ever, aware of the interdependence of the endodontic and restorative aspects of managing root filled teeth, and how these aspects of treatment are fundamental to obtaining the best long-term survival. To obtain the optimal outcomes for patients, clinicians carrying out endodontic treatment should have a vested interest in the restorative phase of the treatment process, as well as an appreciation for the structural and biomechanical effects of endodontic-restorative procedures on restoration and tooth longevity. Furthermore, the currently available research, largely lacks appreciation of occlusal factors in the longevity of root filled teeth, despite surrogate outcomes demonstrating the considerable influence this variable has. Controversies regarding the clinical relevance of minimally invasive endodontic and restorative concepts are largely unanswered with respect to clinical data, and it is therefore, all too easy to dismiss these ideas due to the lack of scientific evidence. However, conceptually, minimally invasive endodontic-restorative philosophies appear to be valid, and therefore, in the pursuit of improved clinical outcomes, it is important that the efficacies of these treatment protocols are determined. Alongside an increased awareness of the preservation of tooth structure, developments in adhesive bonding, ceramic materials and the inevitable integration of digital dentistry, there is also a need to evaluate the efficacy of new treatment philosophies and techniques with well-designed prospective clinical studies.
Collapse
Affiliation(s)
- Francesco Mannocci
- Department of EndodonticsFaculty of Dentistry, Oral and Craniofacial SciencesKing's College LondonLondonUK
| | - Kerstin Bitter
- Department of Operative and Preventive DentistryCharité ‐ University Medicine BerlinBerlinGermany
| | - Salvatore Sauro
- Departamento de Odontología, Facultad de Ciencias de la SaludUniversidad CEU‐Cardenal Herrera ValenciaAlfara del PatriarcaSpain
| | - Paolo Ferrari
- Department of Operative DentistryUniversity of ParmaParmaItaly
| | - Rupert Austin
- Department of ProsthodonticsFaculty of Dentistry, Oral and Craniofacial SciencesKing's College LondonLondonUK
| | - Bhavin Bhuva
- Department of EndodonticsFaculty of Dentistry, Oral and Craniofacial SciencesKing's College LondonLondonUK
| |
Collapse
|
8
|
Shenoy VK, Bangera MK, Miranda G, Rodrigues A, Shenoy RK, Mehendale A. Influence of presence or absence of posts on the failure rates of post endodontic restorations: A systematic review and meta-analysis. J Indian Prosthodont Soc 2022; 22:122-130. [PMID: 36511023 PMCID: PMC9132505 DOI: 10.4103/jips.jips_315_21] [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] [Indexed: 12/30/2022] Open
Abstract
Aim The study was designed to evaluate the existing evidence on the failure rates of post-endodontic restorations retained with and without post in endodontically treated teeth (ETT). Settings and Design Preferred Reporting Items for Systematic Reviews and Meta-Analyses- Protocol (PRISMA-P) guidelines were used to formulate the review. Materials and Methods Randomized controlled trials (RCT's) and prospective clinical studies comparing post endodontic restorations retained with and without post were included. PubMed/Medline, Embase, Cochrane Library and Scopus databases were searched to recognize relevant full-text articles in English language. The quality of the RCT's were evaluated using the Cochrane collaboration tool to assess the risk of bias and reported as having high, low or unclear risk. Random-effects model at a 95% confidence interval was used for the meta-analysis. Statistical Analysis Used Meta-analyses was performed using the Mantel -Haenszel method31 and risk ratio, with a 95% confidence interval (CI), was estimated for dichotomous data. Random effects model32 was used as the pooling method and 95% confident interval (α = .05 for RR values) in Review Manager (RevMan) [Computer program]. Version 5.4. The Cochrane Collaboration, 2020). Results Four studies comparing post retained and post free restorations in ETT with a total of 916 restorations were included in the analysis. The total risk ratio was 2.16, (95% CI:1.25 to 3.72). Conclusion ETT with post retained restorations exhibited significantly lower failure rates compared to restorations without post. Well-designed RCT's are warranted to develop a clinical protocol with respect to post-retained restorations.
Collapse
Affiliation(s)
- Vidya K. Shenoy
- Department of Prosthodontics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India,Address for correspondence: Dr. Vidya K. Shenoy, Department of Prosthodontics, AJ Institute of Dental Sciences, Kuntikana, Mangalore - 575 004, Karnataka, India. E-mail:
| | - Madhu Keshava Bangera
- Department of Dental Materials, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Glynis Miranda
- Department of Prosthodontics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India
| | - Anisha Rodrigues
- Department of Prosthodontics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India
| | - Ramya Kudpi Shenoy
- Department of Public Health Dentistry, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Avinash Mehendale
- Department of Prosthodontics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India
| |
Collapse
|
9
|
de Toubes KMS, Tonelli SQ, Côrtes MIS, Soares CJ, Bruzinga FFB, Soares RV, Siqueira FF. "THE CORRELATION OF CRACK LINES AND DEFINITIVE RESTORATIONS WITH THE SURVIVAL AND SUCCESS RATES OF CRACKED TEETH: A LONG-TERM RETROSPECTIVE CLINICAL STUDY". J Endod 2021:S0099-2399(21)00791-3. [PMID: 34752828 DOI: 10.1016/j.joen.2021.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/28/2021] [Accepted: 10/31/2021] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Cracked teeth (CT) frequently require protective adhesive restorations. This long-term, longitudinal retrospective clinical study aimed to evaluate the factors influencing the success and survival rates of CT with crack lines (CLs) in different directions, when restored early with onlays or full-coverage crowns. METHODS The dental records of 71 patients with a total of 86 CT, with different pulpal and periapical diagnoses, and with follow-ups spanning over 1-11 years were included. Data regarding the demographics; clinical symptoms and signs; bruxism; occlusal interferences; eating habits; pulpal and periapical diagnoses; number, direction, location, and extent of crack lines; probing depth; and coronary condition before and after the placement of definitive restorations were collected. Univariate associations between tooth survival and explanatory variables were assessed. The long-term survival rate was estimated using the Kaplan-Meier analysis and the log-rank test. A multivariate analysis was performed using Cox regression analysis. RESULTS The overall success rate was 93.0%, and the overall survival estimates of CT restored early were 98.6%, 94.9% and 55.9% at the 1-, 5-, and 11-year follow-ups, respectively. The direction of the CLs did not influence the survival of the tooth. No significant association was observed between the type of tooth, probing depth, root canal treatment (RCT), and tooth loss (P>0.05). The multivariate analysis showed that previously treated CT (P<0.05), provision of onlay restorations (P<0.05), and placement of posts (P<0.05) had higher correlations with tooth loss. Additionally, placement of full-coverage crowns resulted in lower tooth loss compared with the placement of onlays (P<0.05). CONCLUSION Previous endodontic treatment in teeth that subsequently develop CLs has a negative impact on the survival rate of the teeth. Moreover, early placement of full-coverage crowns should be implemented for CT, regardless of the direction or number of CLs, since it is associated with a higher cracked tooth survival rate.
Collapse
|
10
|
Mannocci F, Bhuva B, Roig M, Zarow M, Bitter K. European Society of Endodontology position statement: The restoration of root filled teeth. Int Endod J 2021; 54:1974-1981. [PMID: 34378217 DOI: 10.1111/iej.13607] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This position statement on the restoration of root filled teeth represents the consensus of an expert committee, convened by the European Society of Endodontology (ESE). Current clinical and scientific evidence, as well as the expertise of the committee, have been used to develop this statement. The aim is to provide clinicians with evidence-based principles for decision-making on the choice of restoration following the completion of root canal treatment. By discussing the evidence in relation to key topics regarding post-endodontic restoration, a series of clinical recommendations are made. The scientific basis of the recommendations made in this paper can be found in a recently published review article (Bhuva et al. 2021, International Endodontic Journal, https://doi.org/10.1111/iej.13438). It is the intention of the committee to update this statement as further evidence emerges.
Collapse
Affiliation(s)
| | - Francesco Mannocci
- Faculty of Dentistry, Oral & Craniofacial Sciences, Department of Endodontics, King's College London, Guy's Hospital, London, UK
| | - Bhavin Bhuva
- Faculty of Dentistry, Oral & Craniofacial Sciences, Department of Endodontics, King's College London, Guy's Hospital, London, UK
| | - Miguel Roig
- Section for Endodontology, Department of Restorative Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain
| | | | - Kerstin Bitter
- Department of Operative and Preventive Dentistry, Charité - University Medicine, Berlin, Germany
| |
Collapse
|
11
|
Hlophe ST, Masekela R. Life after paediatric intensive care unit. Afr J Thorac Crit Care Med 2019; 25. [PMID: 34286263 DOI: 10.7196/AJTCCM.2019.v25i4.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2019] [Indexed: 11/23/2022] Open
Abstract
Advances in critical care medicine have led to reduced mortality but increased morbidity. Post-intensive care unit syndrome (PICS) develops
after critical illness and presents as cognitive, physical and/or psychosocial impairments. PICS is prevalent in 10 - 36% of patients after
discharge from paediatric intensive care unit. Multiple risk factors are associated with PICS, but there is no single causal factor. Factors
range from clinical illnesses to intensive care intervention. The care plan should be aimed at prevention, early identification and post-ICU
management of PICS by a multidisciplinary team.
Collapse
|
12
|
Manian FA, Hsu F. Writing to learn on the wards: scholarly blog posts by medical students and housestaff at a teaching hospital. Med Educ Online 2019; 24:1565044. [PMID: 30693840 PMCID: PMC6352928 DOI: 10.1080/10872981.2018.1565044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 12/20/2018] [Accepted: 12/27/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Informative writing is a valuable tool for learning and fostering the scientific process. Pearls4Peers (P4P) is an educational open-access website dedicated to scholarly blog posts in hospital medicine based on questions raised during ward teaching rounds. A goal of P4P is to enhance the learning experience of medical students and housestaff (i.e., interns and upper-level residents) by inviting them to write blog posts for a worldwide audience. OBJECTIVE To describe our experience with inviting medical students and housestaff to contribute blog posts to a clinically oriented educational website with the aim of promoting concise evidence-based informative medical writing. DESIGN Medical students and housestaff assigned to the hospital ward team of an attending physician (FM) on the medical service were routinely invited to submit one or more posts or 'pearls' based on clinical questions raised during patient rounds. Selected features of submissions during the first 2 years of P4P (27 June 2015 through 26 June 2017) were then retrospectively reviewed and analyzed. RESULTS Of 156 pearls posted during the study period, 25 (16%) were contributed by medical students and 16 (10.3%) by housestaff. Medical students were significantly more likely to contribute than housestaff (19[70.4%] vs. 11 (9.6%], p < 0.01). Superfluous information was noted in 12 (29.3%) submissions. Word count exceeded the suggested limit of 200 words in 12 (29.3%) cases. An inverted pyramid structure, a widely recognized web writing format with the most important information presented at the outset, was noted in only 17 (41.5%) of entries. Unsolicited comments by contributors suggested a positive learning experience in writing the posts. CONCLUSIONS Writing clinically oriented concise blog posts appears feasible and may be an effective tool in enhancing the ward-based learning experience of medical students and housestaff. More formal instructions on the proper content and structure of blog posts seem warranted.
Collapse
Affiliation(s)
- Farrin A. Manian
- Core Educator Faculty, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | | |
Collapse
|
13
|
Paz T, Bloom A, Roth B, Kalish Y, Rottenstreich A, Elchalal U, Da'as N, Varon D, Spectre G. Pharmacomechanical catheter thrombolysis for pregnancy-related proximal deep venous thrombosis: prevention of post-thrombotic syndrome. J Matern Fetal Neonatal Med 2019; 34:1441-1447. [PMID: 31257966 DOI: 10.1080/14767058.2019.1638900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE The efficacy of pharmacomechanical catheter-directed thrombolysis (PCDT) in preventing post thrombotic syndrome (PTS) for pregnancy related deep vein thrombosis (DVT) is unknown. STUDY DESIGN An observational cross section study of women with pregnancy related proximal (femoral/iliofemoral) DVT who underwent PCDT followed by anticoagulation (study group), and women who were treated with anticoagulation alone (control group). Women were evaluated for PTS using the Villalta scale (primary outcome) and VEINES-QOL/Sym questionnaires. RESULTS Eleven women with iliofemoral DVT underwent PCDT, two during their first trimester and nine postpartum; 18 women were treated with anticoagulation only. There were no significant differences in age, number of previous pregnancies, and duration of anticoagulation or thrombophilia between the groups. The time between DVT diagnosis and study inclusion was longer in the study group [median 50.5 (range 16-120) months] compared to the control group [median 27 (range 11-64) months], p = .4. None of the women in the PCDT group developed PTS, compared to six (33.3%, p = .03) in the control group, four of whom developed severe PTS. One patient in each group developed recurrent DVT, and one patient in the study group developed a calf hematoma. A reduced frequency of lower extremity symptoms was observed in the PCDT group (VEINES-Sym questionnaire), but no differences in quality of life (VEINES-QOL questionnaire) were reported. CONCLUSION This study suggests that PCDT may reduce the incidence of PTS in women with pregnancy related proximal DVT.Bullet pointsDVT involving the iliofemoral veins and development of post thrombotic syndrome is frequent among pregnant or postpartum womenStudies of pharmacomechanical catheter-directed thrombolysis (PCDT) for deep vein thrombosis did not include pregnant or postpartum womenIn our observational cross section study women who underwent PCDT (mainly in the postpartum period) had reduced frequency of post-thrombotic syndrome compared to women who received anticoagulation onlyLarger studies are required to confirm the use of PCDT for prevention of PTS in this population.
Collapse
Affiliation(s)
- Tal Paz
- Department of Ophthalmology, Kaplan Medical Center, Rehovot, Israel
| | - Allan Bloom
- Department of Medical Imaging, Hadassah Medical Center (HMC), Jerusalem, Israel
| | - Batia Roth
- Department of Hematology, HMC, Jerusalem, Israel
| | - Yosef Kalish
- Department of Hematology, HMC, Jerusalem, Israel
| | | | - Uriel Elchalal
- Department of Obstetrics & Gynecology, HMC, Jerusalem, Israel
| | - Nael Da'as
- Department of Internal Medicine, Hematology Unit, Shaare Zedek Medical Center, Jerusalem, Israel
| | - David Varon
- Department of Hematology, HMC, Jerusalem, Israel.,Department of Hematology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Galia Spectre
- Coagulation Unit, Institute of Hematology, Beilinson Hospital Rabin Medical Center, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| |
Collapse
|
14
|
Wang X, Shu X, Zhang Y, Yang B, Jian Y, Zhao K. Evaluation of fiber posts vs metal posts for restoring severely damaged endodontically treated teeth: a systematic review and meta-analysis. Quintessence Int 2019; 50:8-20. [PMID: 30600326 DOI: 10.3290/j.qi.a41499] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVES This review was undertaken to answer a controversial clinical question with high-quality evidence: When severely damaged teeth are restored, which type of post (metal or fiber) demonstrates superior clinical performance? DATA SOURCES The meta-analysis was conducted according to the guidelines in the Cochrane handbook. Electronic databases (MEDLINE, EMBASE, CENTRAL) and gray literatures were screened up to January 2018. Only randomized controlled trials (RCTs) with follow-up of at least 3 years were included. The quality of included studies was assessed by the Cochrane Collaboration's tool. Meta-analysis compared survival, success, post debonding, and root fracture incidence of teeth restored with fiber and metal posts. The GRADE system (Grading of Recommendations, Assessment, Development and Evaluations) was used to assess the strength of the evidence. Of 1,511 records, 14 full texts were obtained. Only four RCTs with follow-up times of 3 to 7 years met the selection criteria. The methodologic quality of included RCTs was low risk of bias. Fiber posts presented significantly higher survival rates than did metal posts (RR 0.57, 95% CI: 0.33 to 0.97, P = .04), while no difference was observed in success rates, post debonding rates, or root fracture rates. The GRADE assessment indicated a high quality of evidence for survival rates and a moderate quality for success rates. CONCLUSION It was concluded that fiber posts displayed higher medium-term (3 to 7 years) overall survival rates than did metal posts when used in the restoration of endodontically treated teeth with no more than two coronal walls remaining.
Collapse
|
15
|
Abstract
A transjugular intrahepatic portosystemic shunt is the standard of care for complications of portal hypertension, such as variceal bleeding, refractory ascites, and hepatic hydrothorax. Hepatic encephalopathy, hepatic insufficiency, and right heart failure are the major complications after shunt creation. If medical management is unsuccessful, the interventionalist is consulted to close/revise the shunt. Closure of the shunt results in a dangerously abrupt increase in portal pressure, increasing risk for life-threatening variceal bleeding. Methods for revising these shunts are reported, which result in coarse adjustments in shunt diameter, causing rapid changes in portosystemic gradients. Our method for shunt revision utilizes carefully sized covered stents deployed in a controlled “onion skin” fashion to produce a narrowing within the hepatic venous limb of the shunt to precisely calibrate the desired portosystemic gradient.
Collapse
Affiliation(s)
- Jerry Matteo
- Interventional Radiology, University of Florida College of Medicine, Jacksonville, USA
| | - Damian Caci
- Interventional Radiology, University of Florida College of Medicine, Jacksonville, USA
| | - Erik Soule
- Interventional Radiology, University of Florida Health, Jacksonville, USA
| | - James Cunningham
- Interventional Radiology, University of Florida Health, Jacksonville, USA
| | - Preston Hood
- Interventional Radiology, University of Florida Health, Jacksonville, USA
| |
Collapse
|
16
|
Jain L, Mehta D, Meena N, Gupta R. Influence of Light Energy Density, Composite Type, Composite Thickness, and Postcuring Phase on Degree of Conversion of Bulk-fill Composites. Contemp Clin Dent 2018; 9:S147-S152. [PMID: 29962781 PMCID: PMC6006893 DOI: 10.4103/ccd.ccd_169_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 11/17/2022] Open
Abstract
Context: Achieving a high degree of conversion (DC) is one of the major concerns during photopolymerization of bulk-fill composites. Aims: To evaluate the effect of light energy densities (11.2 J/cm2 and 20 J/cm2) on the DC and variation of DC in the 24-h postcuring of four bulk-fill composites: SDR, Venus Bulk Fill, MI FIL, and Tetric N-Ceram Bulk Fill at simulated clinically relevant filling depths. Settings and Design: This was an in vitro comparative study. Subjects and Methods: A total of twenty samples were prepared using a teflon mold. VALO curing light was used with two light intensity modes of 1000 mW/cm2 for curing time of 20 s and 1400 mW/cm2 for curing time of 8 s. The energy density was calculated as follows: energy density (J/cm2) is the light intensity (mW/cm2) applied during a certain time (s) divided by 1000. The DC was measured at two time intervals: immediately postcure and after 24-h storage in artificial saliva using an Fourier-transform infrared spectroscopy equipped with attenuated total reflectance accessory. Statistical Analysis Used: ANOVA and Bonferroni test at P < 0.05. Results: High energy density (20 J/cm2) leads to higher DC. Thickness, type of composites, and postcuring phase strongly influence the DC. DC values of the top surface for all the bulk-fill materials investigated were found significantly greater (P < 0.005) than those of their bottom surface. Among composites, SDR showed highest DC. DC strongly increased after 24-h postcure by 32% on top surface and 76% on bottom surface. Conclusions: Energy density more than 20 J/cm2, derived by increasing curing time and low power density, helps obtain a high DC of bulk-fill composites for adequate clinical performance.
Collapse
Affiliation(s)
- Lipika Jain
- Department of Conservative Dentistry and Endodontics, Vokkaligara Sangha Dental College and Hospital, Bengaluru, Karnataka, India
| | - Deepak Mehta
- Department of Conservative Dentistry and Endodontics, Vokkaligara Sangha Dental College and Hospital, Bengaluru, Karnataka, India
| | - Naganath Meena
- Department of Conservative Dentistry and Endodontics, Vokkaligara Sangha Dental College and Hospital, Bengaluru, Karnataka, India
| | - Ravi Gupta
- Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
| |
Collapse
|
17
|
Suleiman N, Shamsuddin SH, Mohd Rus R, Drahman S, Taib MNAM. The Relevancy of paracetamol and Breastfeeding Post Infant Vaccination: A Systematic Review. Pharmacy (Basel) 2018; 6:E27. [PMID: 29597245 PMCID: PMC6025262 DOI: 10.3390/pharmacy6020027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 01/09/2018] [Revised: 03/18/2018] [Accepted: 03/20/2018] [Indexed: 11/22/2022] Open
Abstract
Background: Paracetamol may be used as an antipyretic agent for the treatment of fever, as well as an analgesic in the treatment of mild to moderate pain post-vaccination in infants. The use of paracetamol during fever may be or may not be recommended since it may alter the natural human body immune response, although it may reduce pain. Objectives: The aims of this study are to describe the effectiveness of breastfeeding in reducing pain and paracetamol in reducing fever and pain post infant vaccination. Methods: Data sources and study selection was conducted by electronic searching of six databases. Manual reference checks of all articles on paracetamol and breastfeeding post infant vaccination published in the English language between 1978 and 2017. Two levels of screening were used on 9614 citations, which include screening of abstracts and titles followed by full text screening. The data synthesis were tabulated into study characteristics, quality, and effects. Results: Systematic review of breastfeeding included three studies from 9614 database searches found significant benefit from breastfeeding in pain scores and the duration of crying, as well as behavioural changes. None of the studies stated the detriment of breastfeeding before, during, and after immunization. Systematic review of paracetamol effectiveness included four studies from 1177 database searches found significant benefit from prophylaxis paracetamol in fever, one study found significant benefit from prophylaxis paracetamol in fussiness, and one study's results were found to be not significant. Two studies on evaluating the safety of prophylactic paracetamol in 2009 found that antibody responses to several antigens were significantly reduced, and the other study in 1988 found that antibody titres to DTP bacteria of placebo and PCM did not differ significantly. Conclusions: The relevancy of giving paracetamol post all types of vaccination may be questionable. Breastfeeding before, during, and after immunization are recommended for pain reduction and are proven effective. Further research is required in deciding if paracetamol is to be of rational use following infant immunization.
Collapse
Affiliation(s)
- Nurain Suleiman
- Johor Pharmaceutical Services Division, Ministry of Health of Malaysia, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan 25710, Pahang, Malaysia.
| | - Siti Hadijah Shamsuddin
- Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan 25710, Pahang, Malaysia.
| | - Razman Mohd Rus
- Kulliyyah of Medicine, International Islamic University Malaysia, Kuantan 25710, Pahang, Malaysia.
| | - Shamsul Drahman
- Kulliyyah of Medicine, International Islamic University Malaysia, Kuantan 25710, Pahang, Malaysia.
| | | |
Collapse
|
18
|
Yee K, Bhagavatula P, Stover S, Eichmiller F, Hashimoto L, MacDonald S, Barkley G. Survival Rates of Teeth with Primary Endodontic Treatment after Core/ Post and Crown Placement. J Endod 2017; 44:220-225. [PMID: 29229456 DOI: 10.1016/j.joen.2017.08.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 04/18/2017] [Revised: 08/23/2017] [Accepted: 08/28/2017] [Indexed: 12/27/2022]
Abstract
INTRODUCTION The objective of this study was to determine the effect of delayed placement of the core/post and crown on the outcomes of nonsurgical root canal therapy (NSRCT). METHODS According to the Delta Dental of Wisconsin claims database, 160,040 NSRCTs were completed with a core/post and a crown placed before the end of the continuous coverage period or occurrence of an untoward event. Untoward events were defined as a retreatment, apicoectomy, or extraction as defined by the Code on Dental Procedures and Nomenclature. Statistical analysis was performed by using a multivariable Cox proportional hazards model. RESULTS The survival rate from the time of crown placement to an untoward event was 99.1% at 1 year, 96.0% at 3 years, 92.3% at 5 years, and 83.8% at 10 years. Failure rates were greater when a core/post was placed more than 60 days after the NSRCT (adjusted hazard ratio, 1.08) and when the crown was placed more than 60 days after the core/post placement (adjusted hazard ratio, 1.14). Overall, the survival rates of NSRCT were greater when performed by an endodontist versus other providers. CONCLUSIONS On the basis of the information available from insurance claims data, this study shows that the long-term survival rates of initial endodontic therapy are adversely affected by the delayed placement of the final restoration and full coverage crown.
Collapse
Affiliation(s)
- Kandace Yee
- Department of Endodontics, Marquette University School of Dentistry, Milwaukee, Wisconsin.
| | - Pradeep Bhagavatula
- Department of Clinical Services, Marquette University School of Dentistry, Milwaukee, Wisconsin
| | - Sheila Stover
- Advanced Education Program in Endodontics, Department of Endodontics, Marquette University School of Dentistry, Milwaukee, Wisconsin
| | | | - Lance Hashimoto
- Pre-Doctoral Program in Endodontics, Department of Endodontics, Marquette University School of Dentistry, Milwaukee, Wisconsin
| | - Scott MacDonald
- Department of Endodontics, Marquette University School of Dentistry, Milwaukee, Wisconsin
| | - Gordon Barkley
- Department of Endodontics, Marquette University School of Dentistry, Milwaukee, Wisconsin
| |
Collapse
|
19
|
Ling Z, Liyuan Y, Cuiling L, Xu G. [Three-dimensional finite element analyses of the deep wedge-shaped defective premolars restored with different methods]. Hua Xi Kou Qiang Yi Xue Za Zhi 2017; 35:77-81. [PMID: 28326732 DOI: 10.7518/hxkq.2017.01.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
OBJECTIVE The objective of this paper is to analyze the stress distribution in the deep wedge-shaped defective mandibular first premolars restored with different methods. METHODS Three-dimensional finite element models of mandibular first premolar with deep wedge-shaped defect were created. The model, which was untreated after root canal treatment, served as the control group. Then, according to different treatment designs, four experimental groups were established as follows: resin filling (A), post restoration after resin filling (B), crown restoration after resin filling (C), and post and crown restoration after resin filling (D). Four different post materials were then chosen for establishing the subgroup models: fiber post (B1, D1), AuPd post (B2, D2), pure Ti post (B3, D3), and CoCr post (B4, D4). A force of 100 N was applied at a 30° angle on the buccal-inclined surface near the top of the buccal cusp. The maximum principal stress and Von Mises stress were investigated using finite element analysis software. RESULTS 1) For the control group, the maximum principal stress and Von Mises stress of the residual dentine were the same as those of the tip of the defect. 2) Compared with the control group, the maximum principal stress and Von Mises stress of groups A, B, C, and D decreased greatly (P<0.05). The maximum principal stress and Von Mises stress of groups C and D with crowns were similar. The maximum principal stress and Von Mises stress of the post-dentine surface of groups B and D with fiber post were less than those in the cast metal post models (P<0.05). 3) The displacement of the buccal cusp of group A was similar to that of the control group (P>0.05) and larger than those in groups B, C, and D (P<0.05). CONCLUSIONS It is necessary for deep wedge-shaped defective teeth to be treated with full crowns, but a post is not necessary. If a post is used, fiber post with elastic modulus closer to the dentine is more suitable than metal post.
.
Collapse
|
20
|
Sharma S, Attokaran G, Singh KS, Jerry JJ, Ahmed N, Mitra N. Comparative evaluation of fracture resistance of glass fiber reinforced, carbon, and quartz post in endodontically treated teeth: An in-vitro study. J Int Soc Prev Community Dent 2016; 6:373-6. [PMID: 27583227 PMCID: PMC4981941 DOI: 10.4103/2231-0762.186801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 11/04/2022] Open
Abstract
Aim and Objectives: Use of posts improves the physical properties of endodontically-treated teeth. Different post types are developed such as metal, custom-made, carbon, and quartz. The present study was conducted to evaluate the fracture resistance of glass fiber-reinforced, carbon, and quartz post in endodontically-treated teeth. Materials and Methods: Forty extracted human maxillary incisor teeth were decoronated and endodontically treated and equally divided into 4 groups; control, glass fiber-reinforced, carbon, and quartz posts. No post was used in the control group. Post space was prepared and cemented with different posts and subjected to universal testing machine to check fracture resistance. The data were statistically analyzed using t-test and analysis of variance to compare the mean difference between groups (SPSS version 20, IBM). Results: Quartz type of endodontic post showed good fracture resistance compared to carbon and resin-reinforced post. Least resistance was observed in the control group without post. Conclusion: Quartz, carbon, and glass fiber-reinforced posts show good resistance to fracture, and hence can be used in endodontically-treated teeth to enhance their strength.
Collapse
Affiliation(s)
- Shweta Sharma
- Department of Conservative Dentistry and Endodontics, Maharana Pratap Dental College, Gwalior, Madhya Pradesh, India
| | - George Attokaran
- Department of Prosthodontics, PSM College of Dental Science and Research, Thrissur, Kerala, India
| | - Kunwar S Singh
- Department of Conservative Dentistry and Endodontics, Santosh Dental College, Ghaziabad, Uttar Pradesh, India
| | - Jeethu J Jerry
- Department of Periodontics, Malabar Dental College and Research Centre, Eddapal, Kerala, India
| | - Naima Ahmed
- Department of Prosthodontics, Vyas Dental College and Hospital, Jodhpur, Rajasthan, India
| | - Nirban Mitra
- Department of Prosthodontics, Vyas Dental College and Hospital, Jodhpur, Rajasthan, India
| |
Collapse
|
21
|
PradeepKumar AR, Shemesh H, Jothilatha S, Vijayabharathi R, Jayalakshmi S, Kishen A. Diagnosis of Vertical Root Fractures in Restored Endodontically Treated Teeth: A Time-dependent Retrospective Cohort Study. J Endod 2016; 42:1175-80. [PMID: 27339633 DOI: 10.1016/j.joen.2016.04.012] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 04/06/2016] [Accepted: 04/15/2016] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The purpose of this study was to examine different patient- and treatment-related factors associated with the time of presentation of vertical root fractures (VRFs) in endodontically treated teeth restored with crowns. METHODS One hundred ninety-seven root-filled, crowned teeth with no post and suspected of VRFs were included in the study. Patient details with relevance to endodontic treatment and clinical signs/symptoms were documented, and radiographs were taken. A diagnosis of a VRF was confirmed after surgical flap elevation. Frequency distributions were determined, and statistical analyses were performed using Pearson chi-square analysis, Fisher exact test, cross tabulation, Pearson correlation, and multiple logistic regression. RESULTS Mandibular molars (34%) and maxillary premolars (22.8%) were the most frequently affected teeth. The postoperative time to the diagnosis of a VRF was 4.35 (±1.96) years. Female patients, posterior teeth, overfilled canals, and patients older than 40 years were associated with the presentation of VRFs within 5 years of the postoperative period. Clinical findings most frequently observed were pain on percussion (60%), pain on palpation (62%), presence of a deep narrow pocket (81%), and sinus tract/swelling (67%). "Halo"-type radiolucency (48.7%) was the most common radiographic feature related to VRFs. CONCLUSIONS Pain on palpation/percussion, deep narrow pocket, sinus tract, and halo-type radiolucency are characteristic features of VRFs. Posterior teeth, overfilled canals, female patients, and older patients (>40 years) presenting with the previously described clinical features in endodontically treated teeth restored with crowns are more likely to present with VRFs within 5 years postoperatively.
Collapse
Affiliation(s)
- Angambakkam Rajasekaran PradeepKumar
- Department of Conservative Dentistry and Endodontics, Thai Moogambigai Dental College and Hospital, Dr. MGR Educational and Research Institute University, Chennai, India.
| | - Hagay Shemesh
- Department of Endodontology, Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands
| | - Sundaramurthy Jothilatha
- Department of Conservative Dentistry and Endodontics, Tamil Nadu Government Dental College and Hospital, Chennai, India
| | - Rangarajan Vijayabharathi
- Department of Dental and Maxillofacial Surgery, SMF-Dr. Rangarajan Memorial Hospital, Chennai, India
| | - Somasundaram Jayalakshmi
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospital, Chennai, India
| | - Anil Kishen
- Discipline of Endodontics, Faculty of Dentistry, Toronto, Ontario, Canada
| |
Collapse
|
22
|
Volkwein A, Kummer P, Bitnel H, Campana L. Load Measurement on Foundations of Rockfall Protection Systems. Sensors (Basel) 2016; 16:174. [PMID: 26840315 DOI: 10.3390/s16020174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 01/15/2016] [Accepted: 01/25/2016] [Indexed: 11/21/2022]
Abstract
Rockfall protection barriers are connected to the ground using steel cables fixed with anchors and foundations for the steel posts. It is common practice to measure the forces in the cables, while to date measurements of forces in the foundations have been inadequately resolved. An overview is presented of existing methods to measure the loads on the post foundations of rockfall protection barriers. Addressing some of the inadequacies of existing approaches, a novel sensor unit is presented that is able to capture the forces acting on post foundations in all six degrees of freedom. The sensor unit consists of four triaxial force sensors placed between two steel plates. To correctly convert the measurements into the directional forces acting on the foundation a special in-situ calibration procedure is proposed that delivers a corresponding conversion matrix.
Collapse
|
23
|
Chen A, Feng X, Zhang Y, Liu R, Shao L. Finite element analysis of stress distribution in four different endodontic post systems in a model canine. Biomed Mater Eng 2015; 26 Suppl 1:S629-35. [PMID: 26406057 DOI: 10.3233/bme-151354] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
To investigate the stress distribution in a maxillary canine restored with each of four different post systems at different levels of alveolar bone loss. Two-dimensional finite element analysis (FEA) was performed by modeling a severely damaged canine with four different post systems: CAD/CAM zirconia, CAD/CAM glass fiber, cast titanium, and cast gold. A force of 100 N was applied to the crown, and the von Mises stresses were obtained. FEA revealed that the CAD/CAM zirconia post system produced the lowest maximum von Mises stress in the dentin layer at 115.8 MPa, while the CAD/CAM glass fiber post produced the highest stress in the dentin at 518.2 MPa. For a severely damaged anterior tooth, a zirconia post system is the best choice while a cast gold post ranks second. The CAD/CAM glass fiber post is least recommended in terms of stress level in the dentin.
Collapse
Affiliation(s)
- Aijie Chen
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xiaoli Feng
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yanli Zhang
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Ruoyu Liu
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Longquan Shao
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| |
Collapse
|
24
|
Gaikwad A, Pal KS, Ranganath LM, Jain JK, Patil P, Babar G. Fracture Resistance of Teeth Restored with Various Post Designs and Cemented with Different Cements: An In-vitro Study. J Int Oral Health 2015. [PMID: 26225102 PMCID: PMC4516064] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Studies have been carried out on endodontically treated teeth restored with and without ferrule, and influence of the cementing medium, to evaluate their effect on fracture resistance. This study was conducted on 28 freshly extracted maxillary central incisors. Specimens were restored with two types of post designs, and cemented with two different luting agents, and tested for fracture resistance. MATERIALS AND METHODS A total of 28 freshly extracted maxillary central incisors were used. Specimens were restored with two types of post designs and cemented with two different luting agents and tested using Instron universal testing machine. The statistical analysis was performed using the Kruskal-Wallis test (H) and Tukey honest significant test. RESULTS Ferrule helped in increasing the fracture resistance of endodontically treated teeth. Resin cement showed better results than zinc phosphate cement. The combination of the post with ferrule and resin cement showed the greatest resistance. The combination of the post without ferrule and zinc phosphate cement showed the least resistance. Resin cement increased the resistance of even without ferrule. CONCLUSION There was a positive effect of a ferrule in increasing the fracture resistance. Resin cement showed better resistance than zinc phosphate cement.
Collapse
Affiliation(s)
- Ajay Gaikwad
- Reader, Department of Prosthodontics Crown & Bridge, RKDF Dental College, Bhopal, Madhya Pradesh, India,Correspondence: Dr. Gaikwad A. Vijayashree, H. No 2-907/23D/5, Pragati Colony, Sedam Road, Gulbarga - 585 105, Karnataka, India. Phone: +91-8109351899. /
| | - Kapil Singh Pal
- Senior Lecturer, Department of Prosthodontics Crown & Bridge, RKDF Dental College, Bhopal, Madhya Pradesh, India
| | - L M Ranganath
- Professor and Head, Department of Prosthodontics Crown & Bridge, RKDF Dental College, Bhopal, Madhya Pradesh, India
| | - Jayesh Kumar Jain
- Senior Lecturer, Department of Prosthodontics Crown & Bridge, College of Dental Sciences, Davangere, Karnataka, India
| | - Prashanth Patil
- Reader, Department of Prosthodontics and Crown & Bridge, Bhabha College of Dental Sciences & Hospital, Bhopal, Madhya Pradesh, India
| | - Geetika Babar
- Post-graduate Student, Department of Prosthodontics Crown & Bridge, JSS Dental College & Hospital, Mysore, Karnataka, India
| |
Collapse
|
25
|
Choudhary S, Begum Z, Choudhary P, Tripathi S. Comparative evaluation of retention of prefabricated and conventional cast post: An in vitro study. J Int Soc Prev Community Dent 2014; 4:87-91. [PMID: 25254191 PMCID: PMC4170550 DOI: 10.4103/2231-0762.137635] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 11/20/2022] Open
Abstract
Background and Objectives: This study was conducted to evaluate the retention of various prefabricated posts and to compare them with that of the conventional cast post. Materials and Methods: A sample of 60 freshly extracted single-rooted human mandibular first premolars were sectioned horizontally, 1 mm coronal to the cemento-enamel junction and randomly divided into four groups consisting of carbon fiber posts, glass fiber posts, stainless steel posts and cast metal posts. Cast metal post was the control group. Each group contained 15 specimen. The post space of 9 mm depth was prepared using specific drill supplied by the manufacturer. Resin patterns of the prepared post spaces were fabricated for 15 specimen and were cast in nickel chromium base metal alloy. All the posts were cemented with self-adhesive resin cement and mounted in acrylic cylinders. The teeth were subjected to tensile pull-out test using a universal testing machine. The force required to dislodge each post from the teeth was recorded. The data was analyzed using one-way analysis of variance and Bonferroni test. Results: The bond strength of all the prefabricated posts was significantly lower than the conventional cast post. Among the prefabricated posts highest bond strength was obtained for prefabricated stainless steel post and lowest for carbon fiber posts. There was no significant difference in the mean bond strength obtained for stainless steel and glass fiber post. Conclusion: Though no single prefabricated post could achieve results close to the control group, most retentive among the experimental group were the stainless steel posts. However, conditions where nonmetallic posts are indicated most preferred type of post can be the glass fiber posts.
Collapse
Affiliation(s)
- Suchismita Choudhary
- Department of Prosthodontics, College of Dental Science and Research Centre, Ahmedabad, Gujarat, India
| | - Zubeda Begum
- Department of Prosthodontics, M R Ambedakar Dental College, Bangalore, Karnataka, India
| | - Prashant Choudhary
- Department of Paedodontics, College of Dental Science and Research Centre, Ahmedabad, Gujarat, India
| | - Siddhi Tripathi
- Department of Prosthodontics, Kothiwal Dental College and Research Center, Moradabad, Uttar Pradesh, India
| |
Collapse
|
26
|
Goracci C, Juloski J, Schiavetti R, Mainieri P, Giovannetti A, Vichi A, Ferrari M. The influence of cement filler load on the radiopacity of various fibre posts ex vivo. Int Endod J 2014; 48:60-7. [PMID: 24611944 DOI: 10.1111/iej.12275] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 04/30/2013] [Accepted: 02/22/2014] [Indexed: 11/28/2022]
Abstract
AIM To verify whether the filler load of luting agents influences the radiopacity of intraradicularly placed posts. METHODOLOGY Digital radiographs of the following posts were taken: RelyX Fiber Post (3M ESPE), GC Fiber Post (GC Corporation), DT Light Post Illusion (RTD), DT Light SL Post (RTD), Endo-Composipost (RTD), FibreKleer Parallel Post (Jeneric Pentron Incorporated), FRC Postec (Ivoclar Vivadent), Parapost Taper Lux (Còltene/Whaledent AG), Radix Fiber Post (Dentsply Maillefer), EverStick Post (Stick Tech Ltd), Dentin Post X (Komet), Tech 21 X-op (Isasan), ENA Post (Micerium). Post radiopacity was measured in millimetres of aluminium (mmAl) with reference to an aluminium step wedge. Two extracted contralateral premolars were root filled. After post space preparation, taking the midpoint of the post hole as a reference, each tooth was cut longitudinally into two halves in a mesiodistal direction. On each half, the exposed root dentine was ground flat to the deepest point of the post space, and an even layer of cement was placed and light-cured. To obtain a clinically relevant layer of cement, the material thickness was reduced to 75 μm by grinding with wet abrasive paper. A cement formulation with 30 wt% of filler was tested in one premolar, whilst a formulation with 70 wt% of filler was utilized in the contralateral tooth. Posts were then placed between the two facing root halves of each premolar, and radiopacity was measured in mmAl. Data were analysed using t-test for paired samples (P < 0.05). RESULTS Radiopacity of posts ranged between 1.44 (ENA Post) and 5.78 mmAl (FibreKleer). In the presence of the more heavily filled cement, significantly higher values of post radiopacity were measured (P < 0.001). CONCLUSION The radiopacity of the luting agent contributed to the overall post radiovisibility within the root. Even when the cement with lower filler content was used in combination with the least radiodense dowels, the post was detectable within the root.
Collapse
Affiliation(s)
- C Goracci
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | | | | | | | | | | | | |
Collapse
|
27
|
Abstract
PURPOSE Commercial fiber-reinforced dowel systems are marketed as having better adhesion and sealing ability than conventional metallic dowel systems. The aim of this in vitro study was to evaluate the microleakage of teeth restored with nine dowel systems. MATERIALS AND METHODS Ninety mandibular second premolar teeth were decoronated, and nine homogenous groups were composed of ten teeth each. Root canal and dowel space preparations were made, and eight fiber-reinforced composite dowel systems and one stainless steel dowel system were used to fabricate dowel restorations. Microleakage measurements of the restored teeth were made with a modified fluid filtration method, and data were collected. One sample Kolmogorov-Smirnov, one-way ANOVA, and Tukey-HSD tests were performed on the relative microleakage data of the groups. RESULTS Microleakage values were reported relative to those for teeth with unfilled canals. The highest and lowest relative microleakage values were recorded for the metallic Parapost (7.06 × 10(-4) %) and fiber-reinforced Everstick (3.55 × 10(-4) %) groups, respectively. Significant differences in relative microleakage between the fiber-reinforced dowels and stainless steel dowels were observed. Significant differences among the fiber-reinforced dowel groups were observed as well. CONCLUSIONS The sealing ability of all fiber-reinforced composite dowels is not better than that of stainless steel dowels, and there are significant differences among different fiber-reinforced dowel systems as well. Differences among commercial dowel systems must be taken into consideration when making a selection.
Collapse
Affiliation(s)
- Tuğrul Sarı
- Department of Prosthodontics, Bezmialem Vakıf University Faculty of Dentistry, Istanbul, Turkey
| | | |
Collapse
|
28
|
Mortazavi V, Fathi M, Katiraei N, Shahnaseri S, Badrian H, Khalighinejad N. Fracture resistance of structurally compromised and normal endodontically treated teeth restored with different post systems: An in vitro study. Dent Res J (Isfahan) 2012; 9:185-91. [PMID: 22623936 PMCID: PMC3353696 DOI: 10.4103/1735-3327.95234] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND With the aim of developing methods that could increase the fracture resistance of structurally compromised endodontically treated teeth, this study was conducted to compare the effect of three esthetic post systems on the fracture resistance and failure modes of structurally compromised and normal roots. MATERIALS AND METHODS Forty five extracted and endodontically treated maxillary central teeth were assigned to 5 experimental groups (n=9). In two groups, the post spaces were prepared with the corresponding drills of the post systems to be restored with double taper light posts (DT.Light-Post) (group DT.N) and zirconia posts (Cosmopost) (group Zr.N). In other 3 groups thin wall canals were simulated to be restored with Double taper Light posts (DT.W), double taper Light posts and Ribbond fibers (DT+R.W) and Zirconia posts (Zr.W). After access cavity restoration and thermocycling, compressive load was applied and the fracture strength values and failure modes were evaluated. Data were analyzed using two-way ANOVA, Tukey and Fisher exact tests (P<0.05). RESULTS The mean failure loads (N) were 678.56, 638.22, 732.44, 603.44 and 573.67 for groups DT.N, Zr.N, DT.W, DT+R.W and Zr.w respectively. Group DT+R.W exhibited significantly higher resistance to fracture compared to groups Zr.N, DT.W and Zr.w (P<0.05). A significant difference was detected between groups DT.N and Zr.W (P=0.027). Zirconia posts showed significantly higher root fracture compared to fiber posts (P=0.004). CONCLUSION The structurally compromised teeth restored with double taper light posts and Ribbond fibers showed the most fracture resistance and their strengths were comparable to those of normal roots restored with double taper light posts. More desirable fracture patterns were observed in teeth restored with fiber posts.
Collapse
Affiliation(s)
- Vajihesadat Mortazavi
- Torabinejad Dental Research Center, Department of Operative Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | | | | | | | | |
Collapse
|
29
|
Singh A, Logani A, Shah N. An ex vivo comparative study on the retention of custom and prefabricated posts. J Conserv Dent 2012; 15:183-6. [PMID: 22557821 PMCID: PMC3339017 DOI: 10.4103/0972-0707.94583] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 11/14/2011] [Accepted: 01/02/2012] [Indexed: 11/22/2022] Open
Abstract
Aim: This study was designed to comparatively evaluate the effect of cyclic loading on the retention of custom-fabricated fiber-reinforced composite (CF-FRC), prefabricated metal, and glass fiber posts. Materials and Methods: Thirty mandibular first premolars decoronated at the CE junction were divided into three groups (n=10). Groups A, B, and C were restored using Para Post (Whale dent), Reforpost (Angelus), and CF-FRC post (Ribbond-THM), respectively. Five specimens from each group were subjected to cyclic loading. Tensile bond strength (TBS) was evaluated. Results: Pre-loading TBS values were statistically, significantly higher for all posts (P<0.05). Before and after loading, there was a significant difference between group C as compared to groups A and B. Conclusions: Cyclic loading reduced the retention of all posts but was comparatively lesser for the CF-FRC post. This system provides sufficient retention required for clinical success.
Collapse
Affiliation(s)
- Abhinav Singh
- Department of Conservative Dentistry and Endodontic, Centre for Dental Education and Research, All India Institute of Medical sciences, New Delhi, India
| | | | | |
Collapse
|
30
|
Showalter TN, Foley KA, Jutkowitz E, Lallas CD, Trabulsi EJ, Gomella LG, Dicker AP, Pizzi LT. Costs of early adjuvant radiation therapy after radical prostatectomy: a decision analysis. Ann Oncol 2012; 23:701-706. [PMID: 21659666 PMCID: PMC3331730 DOI: 10.1093/annonc/mdr281] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [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: 03/08/2011] [Revised: 04/14/2011] [Accepted: 04/18/2011] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND This analysis was carried out to evaluate the cost-effectiveness of adjuvant radiation therapy (ART) versus observation, using a decision analysis model based primarily upon the published results of the Southwest Oncology Group prospective trial (SWOG 8794). PATIENTS AND METHODS A decision analysis model was designed to compare ART versus observation over a 10-year time horizon. Probabilities of treatment success, utilization of salvage treatments, and rates of adverse events were taken from published results of SWOG 8794. Cost inputs were based on 2010 Medicare reimbursement rates. Primary outcome measure was incremental cost per prostate-specific antigen (PSA) success (i.e. serum PSA level <0.4 ng/ml). RESULTS ART results in a higher PSA success rate than observation with probability of 0.43 versus 0.22. The mean incremental cost per patient for ART versus observation was $6023. The mean incremental cost-effectiveness ratio was $26,983 over the 10-year period. CONCLUSIONS ART appears cost effective compared with observation based upon this decision analysis model. Future research should consider more costly radiation therapy (RT) approaches, such as intensity-modulated RT, and should evaluate the cost-effectiveness of ART versus early salvage RT.
Collapse
Affiliation(s)
- T N Showalter
- Department of Radiation Oncology, Jefferson Medical College, Kimmel Cancer Center.
| | - K A Foley
- Thomson Reuters Healthcare, Cambridge
| | | | - C D Lallas
- Department of Urology, Jefferson Medical College, Kimmel Cancer Center
| | | | - L G Gomella
- Department of Urology, Jefferson Medical College, Kimmel Cancer Center
| | - A P Dicker
- Department of Radiation Oncology, Jefferson Medical College, Kimmel Cancer Center
| | - L T Pizzi
- School of Pharmacy, Thomas Jefferson University, Philadelphia, USA
| |
Collapse
|
31
|
Abstract
Restoration of severely decayed primary anterior teeth is often considered as a special challenge by pedodontists. This case report presents a 5-year-old boy with severely damaged maxillary right canine. Subsequent to root canal treatment, a reversed (upside-down) metal post was put into the canal and composite build-up was performed. This new method offers a simple, practical and effective procedure for reconstruction of severely decayed primary anterior teeth, which re-establishes function and esthetics for time the tooth should be present and functional in the child's mouth.
Collapse
Affiliation(s)
- Alireza Eshghi
- Department of Pediatric Dentistry and Torabinejad Dental Research Center, Faculty of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | | |
Collapse
|
32
|
Anderson DD, Mosqueda T, Thomas T, Hermanson EL, Brown TD, Marsh JL. Quantifying tibial plafond fracture severity: absorbed energy and fragment displacement agree with clinical rank ordering. J Orthop Res 2008; 26:1046-52. [PMID: 18327811 PMCID: PMC2562904 DOI: 10.1002/jor.20550] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2007] [Accepted: 09/17/2007] [Indexed: 02/04/2023]
Abstract
The energy of producing a fracture is considered one of the most important factors relating to injury severity, prognosis, and risk of complications, yet there has been no objective way to measure this important variable. The purpose of this study was to compare assessments of fracture severity made using new objective computed tomography (CT)-based methods versus the expert opinion of experienced orthopedic traumatologists. Fracture energy, fragment displacement, and soft tissue swelling were quantified in twenty tibial plafond fractures by analyzing injury CT scans. Three experienced orthopedic traumatologists then independently performed a rank order analysis of fracture severity, using plain radiographs. The concordance among the three clinicians ranged from 87% to 91%. Objective fracture severity measurements made with the CT algorithm agreed well with the clinical assessments (fracture energy concordance from 73% to 76%, fragment displacement from 82% to 89%, and soft tissue swelling from 61% to 65%). These are the first objective, CT-based measures of fracture severity. With further refinement, this conceptually novel method has the potential to serve as a valuable tool to provide objective measurement of fracture severity, allowing one to control for this previously confounding variable in large multicenter studies.
Collapse
Affiliation(s)
- Donald D Anderson
- Department of Orthopaedics and Rehabilitation, The University of Iowa, 2181 Westlawn Building, Iowa City, Iowa 52242, USA.
| | | | | | | | | | | |
Collapse
|