Search

Aims: To provide a snapshot of the scientific literature on orofacial pain. Methods: The authors identified 975 papers related to orofacial pain in the Current Contents Life Sciences and Clinical Medicine collections of the Thomson Scientific database that were published during 2004 and 2005 and analyzed them using bibliometric indicators. Results: Among the 54 countries involved, the United States ranks first by number of papers (293), followed by Japan (107), and the United Kingdom (90). The high volume of research activity in some Northern European countries is highlighted, along with that of the European Union (384 papers). The scientific literature on orofacial pain was published in 247 journals; 13 of the top 15 most prolific journals for articles on orofacial pain were found in the Dentistry, Oral Surgery and Medicine subdiscipline of Current Contents/Clinical Medicine, and the Journal of Orofacial Pain was the highest ranked for such articles. Conclusion: This study complements subject reviews of orofacial pain research and provides a more complete picture of the research activity in this field. [ABSTRACT FROM AUTHOR]

To investigate the prevalence, location, size and course of the anastomosis between the dental branch of the posterior superior alveolar artery (PSAA), known as alveolar antral artery (AAA), and the infraorbital artery (IOA). The first part of the study was performed on 30 maxillary sinuses deriving from 15 human cadaver heads. In order to visualize such anastomosis, the vascular network afferent to the sinus was injected with liquid latex mixed with green India ink through the external carotid artery. The second part of the study consisted of 100 CT scans from patients scheduled for sinus lift surgery. An anastomosis between the AAA and the IOA was found by dissection in the context of the sinus anterolateral wall in 100% of cases, while a well-defined bony canal was detected radiographically in 94 out of 200 sinuses (47% of cases). The mean vertical distance from the lowest point of this bony canal to the alveolar crest was 11.25±2.99 mm (SD) in maxillae examined by CT. The canal diameter was <1 mm in 55.3% of cases, 1-2 mm in 40.4% of cases and 2-3 mm in 4.3% of cases. In 100% of cases, the AAA was found to be partially intra-osseous, that is between the Schneiderian membrane and the lateral bony wall of the sinus, in the area selected for sinus antrostomy. A sound knowledge of the maxillary sinus vascular anatomy and its careful analysis by CT scan is essential to prevent complications during surgical interventions involving this region. Rosano G, Taschieri S, Gaudy J-F, Weinstein T, Del Fabbro M. Maxillary sinus vascular anatomy and its relation to sinus lift surgery. Clin. Oral Impl. Res. , 2011; 711-715 doi: 10.1111/j.1600-0501.2010.02045.x [ABSTRACT FROM AUTHOR]

Using the SCI-expanded database, this study provides a quantitative description of the development of the research involving matrix metalloproteinase (MMP) over a period of 20 years. From 1986 to 2007 the scientific literature related to MMP increased sevenfold (397 papers in 1986-1987 and 2834 in 2006-2007). The number of countries participating in MMP-related research doubled during this period (33 in 1986-1987 to 67 in 2006-2007), and the USA continually remained the leader. Several industrialized nations (Japan, Germany, UK, Canada, and France) also continuously played important roles, with some emerging Asian countries joining the top 10 most productive countries in 2006-2007: China (ranked 5th), South Korea (6th), and Taiwan (10th). The MMP-related literature was distributed among a continuously growing number of journals (188 in 1986-1987, 527 in 1996-1997, and 913 in 2006-2007) and The Journal of Biological Chemistry remained the most prolific throughout the entire period. The development of the research involving MMPs during the past two decades was also characterized by a progressive transfer of interest from basic research to clinical medicine; cell biology and pharmacology were important routes of investigation generally pursued by researchers. Journals dedicated to oncology have progressively risen to the top 8 most prolific journals during the 20 year period analyzed. Menée sur la base de données SCI-expanded, cette étude présente une description quantitative du développement de la recherche sur les métalloprotéases matricielles sur une période de 20 ans. De 1986 à 2007, la littérature scientifique en lien avec les MMP s'est accrue d'un facteur 7 (397 articles en 1986-1987 à 2834 en 2006-2007). Durant la période 1986-2007, le nombre de pays participant à la recherche sur les MMP a doublé (33 en 1986-1987 et 67 en 2006-2007), et les États-Unis ont maintenu leur position de leader. Plusieurs pays industrialisés (Japon, Allemagne, Royaume-Uni, Canada et France) ont aussi joué un rôle important, avec quelques pays émergents d'Asie qui se sont joint aux dix pays les plus productifs en 2006-2007 : la Chine (5ième rang), la Corée du Sud (6ième) et Taiwan (10ième). La littérature reliée aux MMP était distribuée à travers un nombre croissant de revues scientifiques (188 en 1986-1987, 527 en 1996-1997 et 913 en 2006-2007), et The Journal of Biological Chemistry est demeurée la plus prolifique durant toute cette période. Le développement de la recherche sur les MMP au cours des deux dernières décennies a aussi été caractérisé par un transfert progressif de l'intérêt de la recherche fondamentale vers la médecine clinique ; la biologie cellulaire et la pharmacologie ont constitué des voies de recherche importantes généralement poursuivies par les chercheurs. Au cours de la période analysée, des revues spécialisées dans la recherche en oncologie ont progressivement intégré le top-8 des revues les plus prolifiques. [ABSTRACT FROM AUTHOR]

Objective. This study traces the evolution of the scientific literature on pain published during the last 30+ years (1976–2007). Methods. Using the Web of Science®, pain-focused journal articles from the Science Citation Index Expanded™ published in 1977, 1987, 1997, and 2007 were retrieved and analyzed. Results. The number of pain-related publications rose from 1,562 articles for 1976–77 to 9,159 PubMed for 2006–2007, with slow growth for the period 1976–1995, and rapid increases from 1995–2007. The analysis of contributing countries showed two major players, the United States and the UK; the doubling of the number of countries involved in pain research from 40 in 1977 to 82 in 2007; and the appearance in 2007 of The Netherlands, Turkey, China, and Brazil among the top-15 most prolific contributors. During the 30-year period, the number of journals publishing pain-related research increased nearly 2.5-fold (363 journals in 1977 vs 972 in 2007), including 14 new, international pain-focused journals since 2000. Additionally, while there were only two pain journals ( Pain and Headache) in 1977, 15 pain-focused journals were indexed in 2007 with the result that 17 of the top-20 pain-focused journals in 2007 did not exist in 1977. Conclusion. The rapid evolution and explosion of pain research in the last 30+ years was reflected in substantial changes in the landscape of the contributing countries and in the scientific journals targeted by pain researchers. [ABSTRACT FROM AUTHOR]

Objectives: To evaluate prevalence, size, location and content of foramina and bony canals located on the lingual side of the mandibular midline. Material and methods: The prevalence and the size of midline lingual foramina and canals visible above and/or below genial spines and their distances from the mandibular base were measured in 60 dry mandibles from adult human cadavers. In addition, macro-anatomic dissections were performed on another 20 mandibles injected with red latex to investigate the vascular canal contents associated with these midline lingual foramina and canals. Results: A total of 118 foramina were detected. All mandibles investigated had at least one lingual foramen at the midline above the genial spines, located at a mean height of 12.5±2.1 mm (SD) from the inferior border of the mandible. Macro-anatomic dissections showed a clear vascular branch entering the mandibular midline as a single vessel from a sublingual-sublingual anastomosis in 19 out of 20 mandibles studied (95%). Conclusion: Blood vessels in the floor of the mouth may be in close proximity to the lingual cortical plate of the mandibular midline in most cases. This implies that bleeding can occur when the mandibular cortical plate is perforated even minimally. As a consequence, the authors suggest a careful planning of implant positioning at mandibular midline, possibly opting for the use of an even number of implants in the interforaminal region, avoiding the risk of surgical trauma to the lingual cortical plate of the mandibular midline. [ABSTRACT FROM AUTHOR]

This study quantifies the utilization of acetaminophen in life sciences and clinical medicine using bibliometric indicators. A total of 1626 documents involving acetaminophen published by 74 countries during 2003–2005 in the Thompson-Scientific Life sciences and Clinical Medicine collections were identified and analyzed. The USA leads in the number of publications followed by the UK, and industrialized countries, including France, Japan and Germany; the presence of countries such as China, India and Turkey among the top 15 countries deserves to be noticed. The European Union stands as a comparable contributor to the USA, both in terms of number of publications and in terms of profile of papers distributed among subcategories of Life Sciences and Clinical Medicine disciplines. All documents were published in 539 different journals. The most prolific journals were related to pharmacology and/or pharmaceutics. All aspects of acetaminophen (chemistry, pharmacokinetics, metabolism, etc.) were studied with primary interest for therapeutic use (42%) and adverse effects (28%) comprising a large part of publications focusing on acetaminophen hepatotoxicity. This quantitative overview provides as to the interest of the scientific community in this analgesic and completes the various review documents that regularly appear in the scientific literature. [ABSTRACT FROM AUTHOR]

The vascularization of the auricle is poorly documented, despite the developments in auriculotherapy and reconstructive surgery. The aim of this study was to describe its arterial distribution using two techniques: diaphanization and anatomical dissection. The study was conducted after intravascular injection of eight diaphanized auricles and ten that were dissected. Dissection showed that the auricle is vascularized by an anterior flow arising in the superficial temporal artery and also by a posterior flow arising in the posterior auricular artery in eight cases out of ten, and in the occipital artery in the remaining two. Diaphanization revealed the three-dimensional arterial distribution of preserved specimens. This technique has a didactic use to complement to standard anatomical dissection. [ABSTRACT FROM AUTHOR]

This study provides an overview of the sleep research literature in medicine and biology through bibliometric analyses of the distribution of journal articles per country, the average journal impact factor of each country, the journal subject category of each article, and the population and gross domestic product of the top-producing countries. The authors of the 2325 articles were from 66 countries – the most prolific being the USA, Germany, Japan, The United Kingdom, France and Canada. This study complements continuing subject reviews on sleep research and offers readers a better understanding of the literature size and research richness in this field. [ABSTRACT FROM AUTHOR]