1,720,979 research outputs found
Hyaluronic Acid In the Treatment of TMJ Disorders: A Systematic Review of the Literature
No full textHyaluronate acid (HA) injections are gaining attention as a treatment option to manage symptoms of temporomandibular joint (TMJ) disorders, but updated evidence-based data on their effectiveness are actually lacking. The present paper aims to summarize and review systematically the clinical studies on the use of hyaluronic acid injections to treat TMJ disorders performed over the last decade. On November 9, 2009, a systematic search in the National Library of Medicine's PubMed (http://www.ncbi.nlm.nih.gov/pubmed) database was performed by means of a combined MeSH and word terms to identify all peer-reviewed papers published in the English literature dealing with the hyaluronic acid infiltration in patients affected by TMJ disorders. The selected papers were assessed according to a structured reading of articles format, which provided that the study design was methodologically evaluated in relation to four main issues, viz., population, intervention, comparison, and outcome. Nineteen (N=19) papers were selected for inclusion in the review, twelve (N=12) dealt with the use of hyaluronic acid in TMJ disk displacements and seven (N=7) dealt with inflammatory-degenerative disorders. Only nine groups of researchers were involved in the studies, and less than half of the studies (8/19) were randomized and controlled trials (RCTs). All studies reported a decrease in pain levels independently by the patients' disorder and by the adopted injection protocol. Positive outcomes were maintained over the follow-up period, which was varied among studies, ranging between 15 days and 24 months. The superiority of HA injections was shown only against placebo saline injections, but outcomes are comparable with those achieved with corticosteroid injections or oral appliances. The available literature seems to be inconclusive as to the effectiveness of HA injections with respect to other therapeutic modalities in treating TMJ disorders. Studies with a better methodological design are needed to gain better insight into this issue and to draw clinically useful information on the most suitable protocols for each different TMJ disorder
Synovial chondromatosis of the temporomandibular joint: a case description with systematic literature review
No full textSynovial chondromatosis (SC) of the temporomandibular joint (TMJ) is a rare disease characterized by the presence of calcified loose bodies within the joint, and few systematically gathered data are available about its epidemiology. The aim of this paper was to describe a case of SC of the TMJ, and to carry out a systematic review of the literature on epidemiology over the past decade. A case of a 53-year-old female with the classical triad of signs and symptoms of SC (pain, swelling, restricted mouth opening) is described. A systematic search in the National Library of Medicine's PubMed Database was performed. 155 cases were described in 103 publications. Most dealt with single case reports. Females are affected more than males with a 2.5:1 ratio and the mean age of patients was about 46 years. Late diagnosis is common and in most cases more than 2 years elapsed between symptom onset and surgical intervention. Open TMJ surgery is the treatment of choice, since less invasive techniques, such as arthroscopy, allowed complete removal of the loose bodies only in about half of cases. A single recurrence was described, confirming the benign nature of the disease.
Copyright 2010 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved
Myositis ossificans traumatica of the temporalis muscle: a case report and diagnostic considerations.
No full textAbstract
BACKGROUND:
The present paper reported the case of a trauma-related myositis ossificans, with focus on considerations for a differential diagnosis process.
CASE REPORT:
A 50-year-old male with a severe painful limitation (12 mm) of jaw opening referred a trauma to the right temporomandibular joint (TMJ) area occurring about 40 days before. Posttraumatic TMJ ankylosis was ruled out on the basis of negative magnetic resonance and cone-beam computerized tomography findings, and the patient underwent treatment with arthrocentesis, botulinum toxin injections, and physiotherapy on the basis of two diagnostic hypotheses, viz., an anchored disk phenomenon or a myofibrotic contracture of the right masseter muscle due to prolonged myospasm. After 4 months, jaw opening was slightly increased to 23 mm, but limitation and pain persisted. A new CT was performed to investigate for the emerging clinical picture compatible with traumatic myositis ossificans of the right temporalis muscle. Once the diagnosis was confirmed, the patient underwent surgery for coronoidectomy. At the 6-month follow-up, mouth opening was increased to up to 35 mm and pain was absent.
DISCUSSION:
It is fundamental that patients suspected of having uncommon clinical pictures leading to mouth opening restriction are promptly referred to specialized centers, where the differential diagnosis process should be based on a comprehensive assessment taking into account for the potential etiologic factors described in the literature
Myositis ossificans traumatica of the temporalis muscle. A case report and diagnostic considerations.
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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