A bibliometric analysis of Periodontology 2000

The continually high impact factor of Periodontology 2000 (7.861 for 2018), the level of which is unprecedented among dental journals, prompted the present bibliometric analysis of the Journal. Since the inception of Periodontology 2000 in 1993 and until July 2019, the top 100 most-cited articles have received a total of 21,276 (Web of Science), 23,009 (Elsevier's Scopus), and 43,518 (Google Scholar) citations. The citations of the 100 most-cited articles were found to vary from 118 to 827 (Web of Science), 10 to 1069 (Scopus), and 15 to 2028 (Google Scholar). Three articles had more than 600 (Web of Science) citations, 5 had between 400 and 600 citations, 25 had between 200 and 400 citations, and 67 had between 100 and 200 citations. The first authors of the 100 most-cited articles were based in the USA (51%), Switzerland (14%), and Australia (10%). The 5 dental institutions with the most frequently cited articles were The Forsyth Institute, USA (9 articles), The University of Queensland, Australia (8 articles), University of Bern, Switzerland (7), University of Texas Health Science Center at San Antonio, USA (6 articles), and University of Washington, USA, and Temple University School of Dentistry, USA (5 articles each). The likely reason for the high impact factor of Periodontology 2000 is publication of insightful and timely review articles produced by eminent researchers and clinicians from a wide range of dental institutions and countries.     

A Latin American perspective of periodontology

Periodontal diseases occur worldwide, and Latin American populations are significantly affected by different manifestations of periodontal disease. The interest in periodontics and periodontal therapy first developed in the early 1930s in the southernmost countries of Latin America, and spread, as the years went by, throughout the region. Today, periodontal research is vibrant in Latin America. The aim of this volume of Periodontology 2000 was to present an overview of the periodontal research currently being performed in different countries of Latin America. The epidemiology of periodontal diseases in adults, children and adolescents, and the pathogenesis of such diseases (including microbiological characteristics and risk factors), are discussed. The role of systemic antibiotic therapy and the effect of smoking are discussed in relation to the progression and the treatment of periodontitis. In addition, the benefit of lasers in periodontal therapy is evaluated. Latin American research groups have been active in exploring new venues of regenerative periodontal treatment, addressing the role of cementum proteins, growth factors and oral mesenchymal stem cells in tissue engineering. Finally, basic research to study cancerization is reported.     

Principles of periodontology

Periodontal diseases are among the most common diseases affecting humans. Dental biofilm is a contributor to the etiology of most periodontal diseases. It is also widely accepted that immunological and inflammatory responses to biofilm components are manifested by signs and symptoms of periodontal disease. The outcome of such interaction is modulated by risk factors (modifiers), either inherent (genetic) or acquired (environmental), significantly affecting the initiation and progression of different periodontal disease phenotypes. While definitive genetic determinants responsible for either susceptibility or resistance to periodontal disease have yet to be identified, many factors affecting the pathogenesis have been described, including smoking, diabetes, obesity, medications, and nutrition. Currently, periodontal diseases are classified based upon clinical disease traits using radiographs and clinical examination. Advances in genomics, molecular biology, and personalized medicine may result in new guidelines for unambiguous disease definition and diagnosis in the future. Recent studies have implied relationships between periodontal diseases and systemic conditions. Answering critical questions regarding host‐parasite interactions in periodontal diseases may provide new insight in the pathogenesis of other biomedical disorders. Therapeutic efforts have focused on the microbial nature of the infection, as active treatment centers on biofilm disruption by non‐surgical mechanical debridement with antimicrobial and sometimes anti‐inflammatory adjuncts. The surgical treatment aims at gaining access to periodontal lesions and correcting unfavorable gingival/osseous contours to achieve a periodontal architecture that will provide for more effective oral hygiene and periodontal maintenance. In addition, advances in tissue engineering have provided innovative means to regenerate/repair periodontal defects, based upon principles of guided tissue regeneration and utilization of growth factors/biologic mediators. To maintain periodontal stability, these treatments need to be supplemented with long‐term maintenance (supportive periodontal therapy) programs.     

A bibliometric analysis of the 103 top-cited articles in endodontics

Objective: The purpose of this study was to identify the 100 top-cited articles in endodontics and analyse their bibliometric characteristics.

Material and methods: The Web of Science database was reviewed to identify the relevant articles.

Results: One hundred and three articles were included because the last four articles had the same number of citations. The top-cited article received 2115 citations. The articles were published in 28 different journals, with the most popular publication being the Journal of Endodontics (n?=?36). The most prolific country was the United States (n?=?41), followed by Sweden (n?=?17) and Switzerland (n?=?8). The most prolific author and institution were M. Torabinejad (n?=?12) and Umeå University (n?=?9), respectively. The majority of articles were of a basic science nature (n?=?55), while endodontic microbiology (n?=?24) was the most frequent subspecialty. The most common study design used in clinical articles was non-randomized experimental study (n?=?5). Half of the clinical articles (n?=?11) had a level III evidence score.

Conclusions: The present citation analysis provides insights into the historical progress and current trends in endodontics.     

A bibliometric analysis of the pediatric dental literature in MEDLINE.

PURPOSE: The purpose of this study was to estimate the availability of dental literature between 1989 and 1998 in seven disciplines within pediatric dentistry by using a bibliometric analysis on MEDLINE and to compare the results to that for adolescents and adults. METHODS: A search strategy was developed for each discipline incorporating dental vocabulary obtained from the MEDLINE Medical Subject Heading (MeSH) index. The number of articles retrieved from MEDLINE for adolescents and adults (> 13 yo) was compared to those for children (< 12 yo) in seven dental disciplines: dental implants, endodontics, oral medicine/radiology, oral surgery, orthodontics, periodontics, and restorative dentistry. RESULTS: There was an average of 8,097 dental articles published each year for the combined seven disciplines studied with an eight-fold range from 327 articles/year for endodontics to 2,765 articles/year for oral medicine/radiology. Of the mean number of articles published each year, 1,273 (16%) were limited to children, while the remaining 6,824 (84%) were on adolescents and adults. The number and percentage of children articles relative to the total number of publications on children ranged from 7 articles/year (1%) for dental implants to 528 articles/year (42%) for oral medicine/radiology. Implant dentistry publications increased the fastest, growing at an average yearly rate of 25%, followed by restorative dentistry (9%), endodontics (9%), oral surgery (6%), orthodontics (6%), periodontics (3%), and oral medicine/radiology (2%). CONCLUSIONS: There is a substantial amount of literature in pediatric dentistry upon which to base clinical decisions. Within this large body of literature, there is a significant amount of variation between the various dental disciplines examined. To stay current, one would need to read and absorb approximately 24 articles each week over 52 weeks per year in more than 75 different journals. Furthermore, the volume of literature is increasing each year, making access even more difficult. These trends suggest the need for computer systems that will facilitate access and retrieval of clinically useful literature.     

A bibliometric analysis of the dental scientific literature on COVID-19

Clinical Oral Investigations - The rapid production of a large volume of literature during the early phase of the COVID-19 outbreak created a substantial burden for clinicians and scientists....