Highly cited orthodontic articles from 2000 to 2015

The 100 Most-Cited Randomised Controlled Trials in Orthodontics: A Bibliometric Study

INTRODUCTION AND AIM

Randomised controlled trials (RCTs) are recognised as the highest level of original evidence and provide essential evidence for dentists to practice evidence-based dentistry. By analysing the top 100 most-cited RCT reports in orthodontics, this study aimed to determine popular research topics, key authors, countries, journals, and their impacts.

METHODS

A comprehensive search was performed in the Web of Science (WoS) electronic database to identify the top 100 most-cited RCT reports in orthodontics. Publication and citation data were retrieved and further analysed and visualised using R Biblioshiny. The primary themes of the 100 articles were also determined. Additionally, the correlation between number of years since publication and citation counts was examined.

RESULTS

The top 100 most-cited RCT reports were published between 1992 and 2018, contributed by 419 authors across 22 journals, with an average citation count of 93.48. The US led with the highest number of publications (28) and citations (2552), followed by the UK (22 and 2061) and Australia (8 and 912). Notably, 20 of the top 24 authors with at least 4 publications are from the UK. The primary focus areas of the articles included early Class II treatment (n = 14), obstructive sleep apnoea (n = 14), demineralisation (n = 12), and pain and quality of life (n = 12). Besides, a positive correlation was found between the number of years since publication and citation counts (P < .001).

CONCLUSIONS

The top 100 most-cited RCT reports in orthodontics encompass a wide range of topics with varying focus areas across different time periods. This analysis recognises the contributions of scholars and offers valuable insights into the research trends within the field of orthodontics.

Medication-Related Osteonecrosis of the Jaw: Bibliometric Analysis from 2003 to 2023

Medication-related osteonecrosis of the jaw (MRONJ) is a serious condition associated with the use of antiresorptive and antiangiogenic medications. Despite extensive research, the pathophysiology of MRONJ remains poorly understood. Bibliometric analysis provides insights into the academic impact of research, helping identify influential works and emerging trends in this field. This study employed a bibliometric analysis of MRONJ publications indexed in Web of Science from 2003 to 2023. The analysis included English-language articles and utilized the VOSviewer, R Studio Bibliometrix package, and Graphpad to evaluate citation counts, publication trends, and collaboration patterns. This study unveils the current situation of the MRONJ research, addressing well-recognized safety issues of antiresorptive and antiangiogenic agents. Our findings may suggest that the overall trend of the MRONJ research continues to evolve and is not likely to reach its peak or plateau yet. We believe that our work will help to identify gaps in the literature and future research directions, contributing to a better understanding of MRONJ management.

Exploring publications in 3 major orthodontic journals: A comparative bibliometric analysis of two 10-year periods (2002-2011 and 2012-2021)

INTRODUCTION

This study aimed to perform a bibliometric analysis examining contributing countries and collaborative networks, authors and collaborative relationships, the performance of the institutions, and cocited journals and references in 3 major orthodontic journals (American Journal of Orthodontics and Dentofacial Orthopedics, European Journal of Orthodontics, and Angle Orthodontist) over two 10-year periods (2002-2011 and 2012-2021).

METHODS

In this study, 4432 publications in the first decade and 4012 publications in the second decade were quantitatively analyzed and visualized using visualization software such as VOSviewer (Leiden University, Leiden, Netherlands), CiteSpace (Drexel University, Philadelphia, Pa), and Scimago Graphica (SCImago Lab, Spain).

RESULTS

Institutions in the United States had the highest number of publications through the 2 decades, whereas Brazil, South Korea, and China achieved significant improvements in performance in the second decade compared with the first. Closer collaborative networks among scholars were revealed in the second decade. The cocitation analysis of the journals showed that highly cited journals included more professional orthodontic journals in the second decade than in the first decade.

CONCLUSIONS

Bibliometric analysis of publications in 3 major orthodontic journals over two 10-year periods revealed a trend of diversification in countries and institutions participating in publishing, international collaborations, and collaboration networks among authors in the field of orthodontics during the 2 decades.

The orthodontic research trends in Arab League Nations from 2002 to 2021: A bibliometric appraisal

The evaluation of publication growth is a vital indicator to assess any branch of knowledge. The present study aimed to investigate the Scopus-indexed publications on orthodontics produced by the Arab League Nations in the last two decades (2002-2021). Quantitative research method based on bibliometric analysis has been used and the meta-data for the study was retrieved from Elsevier's Scopus database on November 14, 2022. The bibliographic description of all types of literature published on orthodontics from 2002 to 2021 by the authors affiliated with the Arab countries has been downloaded. The selected bibliometric indicators of the data were analyzed by using Microsoft Excel, VOSviewer and SPSS software. The Arab League Nations contributed 5.02 % to global orthodontic research. This segment has demonstrated an amazing escalation of documents from a global perspective between 2002 and 2021 from 1.24 % to 10.94 %. Slightly more than 60 % of documents were published during the last five years of study (2017-2021). The highest number of documents (41 %) was produced by Saudi Arabia, whereas documents contributed by Jordan gained the maximum citation impact. The majority of collaboration was done with the United States, but documents produced in collaboration with Turkey gained the highest citation impact. The paper highlighted that the share of Arab League Nations in orthodontic research has been growing, and Saudi Arabia emerged as the most productive country. The constructive evolution of orthodontic literature with international collaboration display an ambitious approach by Arab countries.

Areas of Interest in Dental Education: A Bibliometric Analysis of the Last Decade

This study aimed to perform a comprehensive bibliometric analysis of journals focused on dental education (Journal of Dental Education and European Journal of Dental Education) from 2014 to 2023. An ISI Web of Science Search was performed in October 2023 with no filters for language or keywords. Published articles between 2014 and 2018, 2019 and 2023, and 2014-2023, along with the top 100 cited articles published within this period were exported as txt files. Keyword and title word network maps and occurrences were generated using VOS Viewer software. Author-affiliated countries with the most publications were tabulated from the Web of Science. Dental education and dental students and education were consistently in the top six keywords and title word occurrences in all periods and top 100 cited articles. Similar trends were observed for keyword and title word network maps with an emphasis on dental education and students. However, the 2019-2023 period saw the emergence of coronavirus disease 2019, three-dimensional printing, virtual reality, and education technology, with the earlier period (2014-2018) showing clusters around students, perceptions, dental hygiene education, and assessment. The United States ranked top of the list for most published author-affiliated countries, with England, Canada, Australia, and Saudi Arabia in the top six for all periods analyzed. In conclusion, within the limitations of this study, areas of interest in dental education journals in the last decade were identified along with the countries with most publications.

A bibliometric analysis of minimally invasive dentistry: A review of the literature from 1994 to 2021

STATEMENT OF PROBLEM

Minimally invasive dentistry is a technique for the maximal preservation of healthy tooth structures and has been a focus of attention in dental research. However, a detailed bibliometric analysis focusing on research related to minimally invasive dentistry is lacking.

PURPOSE

The purpose of this bibliometric analysis was to analyze leading countries and organizations and to identify the preferred journals, the most productive authors, and the most commonly used keywords in the field of minimally invasive dentistry.

MATERIAL AND METHODS

The search was performed by using the Scopus database, and publications pertinent to the field of minimally invasive dentistry from 1994 to 2021 were identified. A bibliometric analysis with reference to citations and documents, authors, journals, and keywords was performed. A total of 391 articles published in Scopus indexed journals between 1994 and January 2021 were analyzed by using a software program.

RESULTS

A continuing yet steady increase in research publications was identified, with a substantial increase in publications since 2013. The United States and Germany were the countries that published the most articles (98 and 46, respectively), articles that received 1877 and 806 citations, respectively. Cardiff University, UK, was the most productive organization that received 212 citations. The most highly cited articles were from the Q1 category. Blum from King's College London was the highest-cited author in this field.

CONCLUSIONS

Considerable advancement has been made in minimally invasive dentistry, as demonstrated by the increase in the number of publications linked with collaboration among various authors, nations, and institutes. This citation analysis gives a perspective on the progress of research in the field of minimally invasive dentistry and allows identification of the most significant and pertinent research areas.

The landscape of endodontic education research area: A bibliometric analysis

OBJECTIVES

Educational research is essential for rationalizing curriculum design, improving evaluation systems, and updating teaching content. This bibliometric study aimed at analyzing the characteristics of publications relevant to endodontic education, thus forming a comprehensive scope of this research area.

METHODS

The search was conducted in the Web of Science Core Collection database in May 2022. Knowledge units of the included publications, such as year of publication, journal, country/institution/author, keywords, and highly cited articles/references, were analyzed.

RESULTS

The United States ranked first in the number of articles with a total of 17 articles. The majority of included articles were published in Journal of Dental Education (n = 25), International Endodontic Journal (n = 21), and European Journal of Dental Education (n = 14). The top 3 most frequent keywords were Endodontics, Education, and Root canal treatment. The main topic in endodontic education were curriculum, preclinical education, educational technology, and continuing education.

CONCLUSION

Forming a full scope of the endodontic research area, this bibliomertic analysis can help mine the hot topic, predict the frontiers in the field and provide the data necessary to determine the direction of research, rationalize resource allocation, and formulate policy.

International trends of orthodontic publications: A bibliometric observational study of the last decade (2011-2020)

INTRODUCTION

The number of published orthodontic studies has increased considerably over the past ten years.

OBJECTIVE

To analyze the bibliometric data of international orthodontic studies included in orthodontic journals encompassed by the Scopus database between 2011 and 2020, as well as to undertake data comparison between the period 2010-2015 and the period 2016-2020.

MATERIALS AND METHODS

A retrospective search was conducted on 14 orthodontic journals included in the Scopus database from 2011 to 2020. Studies of both primary and secondary types were targeted by the search. The yearly number of studies published in the 14 journals, and the first 20 countries, institutions and their type (public/private), and authors, respectively, regarding publication volume, were presented.

RESULTS

Over the past ten years, the number of publications in the chosen journals reached 9200, where the American Journal of Orthodontics and Dentofacial Orthopedics and Angle Orthodontist topped the journal list, with 22% and 12% of the publications, respectively. Furthermore, the orthodontic publication volume showed a declining trend by the end of the decade (-9%), where academic/public institutions produced most of the orthodontic studies, and the US (20%), Brazil (17%), and South Korea (8%) topped the countries with the most orthodontic studies. A comparison of the two halves of the decade revealed that orthodontic research exhibited an increasing trend in developing nations, especially Egypt (104%), Saudi Arabia (88%), and Iran (83%).

CONCLUSION

The orthodontic studies published in the chosen journals over the past ten years showed a dynamic change in yearly publication and ranking of countries, institutions, and authors.

Mapping out the scientific literature on extraction and socket preservation: A Scopus based analysis (1968-2020)

Purpose

This study aimed to investigate the current state of research on tooth extraction socket preservation. The main aim of this study was to consolidate the research published on extraction socket preservation from 1968 to 2020 in Scopus indexed journals.

Methodology

The bibliometric method, a quantitative analysis investigating publishing trends and patterns, was used. Scopus database was used to retrieve the bibliographic records of published scholarly output. The analysis was performed using software and visualization tools like MS Excel, VOSviewer, Cite Space, Biblioshiny (RStudio), and BibExcel.

Results

The result showed a gradual increase in research, whereby a substantial increase was observed from 2005 to 2006. Six hundred nineteen articles were published in 173 journals with total citations of 12091. Most published articles were from the USA, Italy, Germany, and China. The authorship pattern showed an interdisciplinary and collaborative approach among researchers.

Conclusion

This bibliometric analysis can guide researchers, funding agencies, industry, and institutions.

Bibliometric analysis of research publications in three major orthodontic journals during 2012–2021

Objectives:

This study conducted a comprehensive bibliometric analysis of articles published from 2012 to 2021 in three orthodontic journals: The American Journal of Orthodontics and Dentofacial Orthopedics (AJODO), The Angle Orthodontist (AO), and European Journal of Orthodontics (EJO).

Material and Methods:

Eligible articles published from 2012 to 2021 in AJODO, AO, and EJO were retrieved from the Web of Science Core Collection database and subsequently processed using CiteSpace software to generate their characteristics, including authorship, institution, geographic origin, keywords, and citation profiles.

Results:

The three orthodontic journals published 4001 articles from 370 institutions in 95 countries from 2012 to 2021. The AJODO published the most articles (45.5%) followed by AO (31.3%) and EJO (23.2%). The most prolific country was the United States (US), followed by Brazil, South Korea, China, and Turkey. The authors from the US were heavily engaged in international collaborations, especially with South Korea and Brazil. The country and institutions with the highest citation counts per publication were Italy and the University of Bern (Switzerland), respectively. Pandis N was the most prolific author, and Proffit W was the most-cited author in the 4001 publications. The keywords that emerged most frequently were “children” followed by “orthodontic treatment” and “malocclusion.” Four of the 10 most-cited articles were related to digital dental technology.

Conclusion:

This bibliometric analysis provides a complete picture of the research published in three major orthodontic journals over the past decade. It comprehensively analyzes the authorship, country of origin, institutions, keywords, and citation profiles of the articles.

Trending topics in orthodontic treatment practices in the past 5 years: A longitudinal study on case reports

Objectives:

This study aimed to analyze the case reports published in the past 5 years in orthodontic journals in the Web of Science (WOS) indexes and evaluate the trending topics.

Material and Methods:

Following a search conducted by entering the keyword “orthodontics” in the WOS Master Journal List search site, four journals in the Science Citation Index (SCI) and five journals in the Emerging Science Citation Index (ESCI) were included in the study, and case report articles published in these journals between 2016 and 2020 were examined. The case reports were analyzed by examining each issue of each journal published during these years. In addition, frequently studied topics were examined under seven headings.

Results:

Only nine of the 16 journals in the list of related journals have published case reports in the past 5 years. The largest number of articles appeared in the American Journal of Orthodontics and Dentofacial Orthopedics for the SCI group and International Orthodontics for the ESCI group. When the frequently examined topics were evaluated, it was determined that the highest number of articles was fixed orthodontic treatments (53.4%), orthognathic surgery (18.9%), multidisciplinary treatments (6.5%), and treatments for individuals with general health problems (6.5%).

Conclusion:

The number of case reports published has gradually increased in the past 5 years. The number of articles in the journals included in the SCI is higher. The subject variety of case reports is too great to be limited to a narrow field.

Global Trends of Researches on Lumbar Spinal Stenosis: A Bibliometric and Visualization Study

STUDY DESIGN

Bibliometric and visualization analysis.

OBJECTIVE

Lumbar spinal stenosis (LSS) has become a common health problem and the most frequent indication for spinal surgery. This study aimed to illustrate the overall knowledge structure, and development trends of LSS, using a bibliometric analysis and newly developed visualization tools.

MATERIALS AND METHODS

Research data sets were acquired from the Web of Science. The time span was defined as "2000-2019". VOS viewer and Citespace software was provided to analyze the data and generate visualization knowledge maps. Annual trend of publications, distribution, H-index status, co-authorship status and research hotspots were analyzed.

RESULTS

A total of 1934 publications met the requirement. The United States published most papers (521, 26.9%), both total citations (17,626) and H-index (61) ranked first of all the countries. The most productive organizations on LSS is Seoul National University (50). Spine (43) published the most papers on LSS. Quality of life, risk factor, disability, double blind trials, and decompression surgery are the research hotspots in the recent years.

CONCLUSION

The number of publications showed an upward trend with a stable rise in recent years. The United States is a country with the highest productivity, not only in quality, but also in quantity. Seoul National University has been the largest contributor in this field. Spine is the best journal related to LSS. Quality of life, risk factor, disability, and decompression surgery are the research hotspots in the recent years. Indeed, this study provides a new insight to the growth and development of LSS. Moreover, it will contribute to the growth of the international frontier of LSS.

Prolific authorship in orthodontic scientific publishing

OBJECTIVES

To identify the 10 most numerically prolific authors publishing in the field of orthodontics for each year over the last decade (2011-2020), describe the characteristics of these outputs and identify trends in the types of study being published.

MATERIALS AND METHODS

A Scopus literature search was conducted to identify the 10 most numerically prolific publishing authors in orthodontics for each year during this decade. Number and characteristics of all publications for each author were analysed with descriptive and inferential statistics.

RESULTS

Forty-nine different individual authors were identified who were collectively prolific for between 1-8 years within the assessment decade. These authors published a total of 2025 papers, with a median annual output of 18 papers per year; however, half of these authors published between 15-24 papers per year (range 5-200). Amongst authors, 2 or more collaborated on only 7% of the identified papers. The median number of authors per paper was 5 (range 1-27) with significant variation according to study design (P < .001). The majority of authors originated from Brazil (19.3%), Italy (14.1%) and India (12.7%). Most papers described non-prospective clinical studies (38.1%), case reports or case series (11.1%) and narrative reviews (10.8%). Finally, prolific authors had a smaller annual output when publishing in orthodontic journals (P < .001) and when publishing experimental primary research (P = .04).

CONCLUSIONS

A cohort of prolific authors in orthodontics between 2011-2020 was identified. Extreme variation was found in annual output between these authors but case reports, non-prospective clinical studies and narrative reviews predominated.

The 100 most-cited articles in orthodontic journals in the last 20 years

INTRODUCTION

This study aimed to identify and analyze the 100 most-cited articles published in orthodontic scientific journals in the past 21 years.

METHODS

The research was conducted in the Thomson Reuters Web of Science data citation index, considering articles from 2000 to 2020 and the category of dentistry, oral surgery, and medicine. Information about the number of citations, citations per year, title, authors, year of publication, the title of scientific journals, type of study, keywords, and thematic field were extracted for each article. Descriptive statistical analyses were performed to evaluate the collected data. The Pearson correlation analysis was used to explore the relationship between publication and the number of citations received. The VOSviewer software (Leiden University Center for Science and Technology Studies, Leiden, the Netherlands) was used to generate the keyword cooccurrence network.

RESULTS

The number of citations of the 100 selected articles ranged from 122 to 547. The journal with the largest number of cited articles was the American Journal of Orthodontics and Dentofacial Orthopedics. Most of the papers were cross-sectional and longitudinal studies, and the most frequent thematic fields among the selected articles were anchorage, root resorption, and rapid maxillary expansion. Orthodontic treatment, anchorage, and root resorption were the most frequent keywords.

CONCLUSIONS

Bibliometric analysis of citations revealed a greater centralization of orthodontic studies. Most of the articles were published in a single journal and by one country. Anchorage is a trending topic in orthodontics, and cross-sectional and longitudinal studies are the most-cited types of papers.

Bibliometric analysis of the scientific production of literature on peri-implant diseases in the Web of Science

BACKGROUND

The exponential increase in implant placement worldwide and the high prevalence of its associated pathologies have prompted an increasing contribution by the scientific community to the number of publications related to peri-implant pathologies.

PURPOSE

The objective of this work is to carry out a bibliometric analysis of scientific production on peri-implant diseases.

MATERIALS AND METHODS

The search strategy included titles, keywords, and abstracts based on the term peri-implantitis and all the possible combinations existing in Science Citation Index Expanded (SCIE) of the main collection of Web of Science. Two limits were established: the document typology was limited to Article and Review, and articles published up to 2019 were selected. All articles were refined and standardized manually to avoid typographical errors and duplications in authors' names or institutions.

RESULTS

The total number of papers collected was 2547. A significant increase was observed in the number of articles published, especially in the past 10 years. The three most productive authors were Europeans, and the 45 most productive institutions were the universities. The most productive funding entities were the governments. Of the published works, 42.28% were funded. Of the 2547 records, 86.53% presented keywords.

CONCLUSIONS

Scientific literature on peri-implantitis shows scientific growth in recent years, with a growing trend towards collaboration between authors and institutions. Most of the works have been published in high-impact journals, and in the last 2 years, more than half of the works have received some type of public or private funding.

The 50 most-cited articles on clear aligner treatment: A bibliometric and visualized analysis

INTRODUCTION

Research on clear aligner treatment (CAT) has increased in recent years. In this study, we aimed to perform a bibliometric and visualized analysis to identify and critically assess the 50 most highly cited articles on CAT.

METHODS

Web of Science was selected as a data source and consulted until March 2020 to identify all articles potentially relevant to the analysis. All the eligible articles were collected until 50 manuscripts were listed. Article-based parameters, journal-based parameters, and author-based parameters were registered to perform the bibliometric analysis. Keywords were automatically harvested from the selected articles to implement the visualized analysis.

RESULTS

The search identified a total of 378 articles; the total number of citations of the selected articles varied from 15 to 112. The average number of citations per year varied from 1.15 to 13.83. The predominant study design was clinical (31.7%). Over the 15 journals in which the most cited articles were published, the American Journal of Orthodontics and Dentofacial Orthopedics published the majority of those included in the list (14) and also received the greatest number of citations (671). A total of 195 authors contributed to the 50 most cited articles; a significant portion of them (26) were unaffiliated with academic institutions. A total of 184 keywords were gathered from the article list.

CONCLUSIONS

The number of citations on CAT is expected to grow steadily in parallel with the rising number of research projects. The present work identifies the most influential articles on CAT and their characteristics, placing emphasis on the journals, the authors, and the topics addressed.

A bibliometric analysis of the top 50 most cited articles published in the Journal of Conservative Dentistry

Background:

Aims:

Methodology:

Statistical Analysis:

Results:

Conclusions:

Bibliometric Analysis of Literature Published on Antibacterial Dental Adhesive from 1996-2020

This study aimed to investigate the current state of research on antibacterial dental adhesives. The interest in this field can be drawn from an increasing number of scholarly works in this area. However, there is still a lack of quantitative measurement of this topic. The main aim of this study was to consolidate the research published on the antibacterial adhesive from 1996 to 2020 in Web of Science indexed journals. The bibliometric method, a quantitative study of investigating publishing trends and patterns, was used for this study. The result has shown that a gradual increase in research was found, whereby a substantial increase was observed from 2013. A total of 248 documents were published in 84 journals with total citations of 5107. The highly cited articles were published mainly in Q1 category journals. Most of the published articles were from the USA, China, and other developed countries; however, some developing countries contributed as well. The authorship pattern showed an interdisciplinary and collaborative approach among researchers. The thematic evaluation of keywords along with a three-factor analysis showed that 'antibacterial adhesives' and 'quaternary ammonium' have been used commonly. This bibliometric analysis can provide direction not only to researchers but also to funding organizations and policymakers.

Global Trends of Researches on Sacral Fracture Surgery: A Bibliometric Study Based on VOSviewer

STUDY DESIGN

Bibliometric analysis.

OBJECTIVE

This study aims to identify and summarize the articles related to sacral fracture surgery, to compare the papers from different countries and journals, to show the trends of researches on sacral fracture surgery.

SUMMARY OF BACKGROUND DATA

In recent years, studies on sacral fracture are growing rapidly, but there were no bibliometric studies regarding sacral fracture surgery.

METHODS

Excel 2016 and VOSviewer were used to identify and summarize the articles from Web of Science between 1900 and 2018. Publication number, publication year, publication country, publication organization, publication source, author, sum of times cited, H-index, and journal's impact factors were recorded and analyzed. Bibliometric maps of co-citations and maps of co-occurrence of keywords are drawn.

RESULTS

A total of 611 publications were extracted. United States published most articles (227, 37.2%), both total citations (3536) and H-index (32) of United States ranked first of all the countries. The most productive organization on sacral fracture surgery is Johns Hopkins University (14). Spine (43) published the most articles on sacral fracture surgery. The latest keyword "patterns" appeared in 2017 in 5 articles. Other relatively new keywords include "proximal junctional kyphosis," "spondylopelvic dissociation," "fragility fracture," "lumbopelvic fixation" that appeared in 2017 in eight, six, six, and 25 articles, respectively.

CONCLUSION

This bibliometric study showed that there is a growing trend both in published articles related to sacral fracture surgery and relative research interest in the last 30 years. United States dominates the research regarding sacral fracture surgery. Johns Hopkins University, Johannes Gutenberg University of Mainz, and Harborview Medical Center are the best institutions related to sacral fracture surgery research. Spine, J Orthop Trauma, and Injury are the top three productive journals on sacral fracture surgery. Sacral fracture patterns, proximal junctional kyphosis, spondylopelvic dissociation, fragility fracture, and lumbopelvic fixation may be the new research hotspot in this field.

LEVEL OF EVIDENCE

5.

Trending topics in orthodontics research during the last three decades: A longitudinal bibliometric study on the top-cited articles

OBJECTIVE

To perform a bibliometric analysis on the top-cited articles over the last three decades from 1989 to 2018, using a longitudinal set-up, in order to analyse how articles' features have evolved over time.

SETTING AND SAMPLE POPULATION

A sample of 312 articles divided into three subgroups of 104 top-cited articles for each decade were included. The h-index value was used to determine the sample size.

MATERIALS AND METHODS

The articles were identified through a search in the category "dentistry oral surgery and medicine" of the Web of Science database. The information relative to the articles was collected. Descriptive statistics was used to describe the articles and the journals; selected parameters were analysed with the Kruskal-Wallis and the Mann-Whitney U test at the 0.05 level of significance.

RESULTS

The top-cited articles were published mainly by orthodontic journals. Along the last two decades, the scientific contribution of Asian and South American countries rose significantly. The trending topics varied in each decade. Skeletal anchorage-related articles dominated the production of the decade 1999-2008 while new technologies as CBCT displayed a higher prevalence in the last decade, where new topics such as corticotomy-assisted orthodontics started to appear. The number of multi-authored articles increased while the articles from no university institutions decreased.

CONCLUSION

The publications in the three studied decades were significantly different in terms of numbers and characteristics. A longitudinal set-up allows to study the evolution of the scientific production and how the area of interest has developed over time.

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.

Top-Cited Articles from Dental Education Journals, 2009 to 2018: A Bibliometric Analysis

The number of citations an article receives is an important indicator to quantify its influence in its field. The aim of this study was to identify and analyze the characteristics of the 50 top-cited articles addressing dental education published in two journals dedicated to dental education (European Journal of Dental Education and Journal of Dental Education). The Web of Science database was searched to retrieve the 50 most-cited articles from the two journals in December 2018. The top-cited articles were analyzed for journal of publication, number of citations, institution and country of origin, year of publication, study type, keywords, theme and subtheme, and international collaborations. The results showed the 50 top-cited articles were cited between 24 and 146 times each. The majority of these top-cited articles (n=34) were published in the Journal of Dental Education Half (n=25) of the articles were by authors in the U.S. The most common study types were surveys (n=26) and reviews (n=10). The main themes of these top-cited articles were curriculum and learner characteristics. This bibliometric analysis can serve as a reference for recognizing studies with the most impact in the scholarship of dental education.

A bibliometric analysis of scientific production in the field of lingual orthodontics

Background

Due to the lack of bibliometric studies in the field of lingual orthodontics in dentistry, the aim of this study was to assess the evolution and current status of activity in this field during the period 1978–2017.

Methods

A bibliometric analysis of the scientific articles indexed in the Science Citation Index-Expanded of the Web of Science and in the Scopus® database was performed using the truncated terms “ling* apppli*” or “ling* orthod*” or “ling* bracket*”. The types of texts included for analysis were limited to “articles” and “reviews”. The following information was extracted from each article identified: title, authors’ name(s), institutional affiliation(s), country of origin, journal title, year of publication, type of publication, and number of citations.

Results

A total of 341 articles were identified by 646 different authors, 6.2% were reviews and 93.8% were other types of journal articles. Bibliometric indicators showed a tremendous increase in the rate of publication over time with two peaks in productivity in 1989 and 2013. Fourteen authors and 15 institutional collaboration networks were identified in which European institutions were the most productive. Methodological articles were the most frequent types of research articles (28.1%), followed by case reports/series (17.1%), and narrative reviews (4.7%). Articles providing the highest quality evidence were interventional clinical trials (1.8%) and systematic reviews (0.9%). The remaining articles were non-research papers and were for information purposes only.

Conclusions

Bibliometric indicators point to an irregular increase in the numbers of published works in lingual orthodontics over time. Research output is dominated by methodological articles as a technique-driven subspecialty. Although articles on lingual orthodontics are published mainly in North American journals, lingual orthodontics is largely a European domain.

Top-cited Articles in Regenerative Endodontics: A Bibliometric Analysis

INTRODUCTION

Bibliometric analysis is a method for quantifying the research productivity, author performance, and manuscript impact. The citation count received by a scientific article is one of the indicators of its impact within a field. The purpose of this study was to identify the 100 top-cited articles published in regenerative endodontics and to analyze their main characteristics.

METHODS

Thomson Reuters Web of Science was searched to retrieve the 100 most-cited articles in "regenerative endodontics" published from January 1991 to February 2018 in the category of "Dentistry, Oral Surgery and Medicine." Among the included top-cited articles, the following parameters were recorded and analyzed: journal name, authors, institution, country, publication title and year, number of citations and average citations, type of study, collaborations, and key words. The data were analyzed using SPSS version 19.0 (IBM Corp, Armonk, NY) and VOS viewer software (version 1.6.7; Leiden University Center for Science and Technology Studies, Leiden, Netherlands).

RESULTS

Among the 100 top cited articles, the highest number of citations that an article received was 309. The top cited articles appeared in 14 different journals, and the Journal of Endodontics published the greatest number of these articles (66%). The majority of articles were published in the year 2014 (n = 17). The majority of articles originated from the United States (n = 51) with the most contribution from The University of Texas Health Science Center, San Antonio, TX. The most frequent first authors were Torabinejad (n = 4), Nosrat (n = 3), and Thibodeau (n = 3). In vitro studies were the most common study design (n = 29) followed by reviews (n = 21). "Regenerative endodontics" was the most frequently used key word.

CONCLUSIONS

This bibliometric analysis reveals the progress and trend of research in the field of regenerative endodontics. The in vitro articles published in the field of regenerative endodontics had the highest number of citations and average citation rates.

The Impact of Specialization in Journal Networks and Scholarship

BACKGROUND

The use of bibliometrics to evaluate authors, institutions, and journals faces significant challenges in comparing biomedical specialties because of marked differences among fields. Our objective was to evaluate the effect of specialty field and physician numbers on bibliometric parameters.

METHODS

For this bibliometric analysis, data from MDLinx.com and SCImago Journal & Country Rank for 2016 were used to rank the journals. The 2015 Physician Specialty Data Report provided the number of specialists in specific fields. We assessed the means for bibliometric parameters across medical and surgical specialties.

RESULTS

A total of 904 journals within 25 medical and surgical specialties were identified. Medical specialty journals had higher average total citations than did surgical specialty journals (8360 ± 16082 vs. 6217 ± 8743; P = 0.01). Medical specialties with the highest impact factor were oncology (7.8 ± 20.7), psychiatry (4.6 ± 4.0), and neurology (4.4 ± 4.1), whereas surgical specialties were led by urology (2.9 ± 3.3), cardiothoracic surgery (2.9 ± 2.7), and general surgery (2.6 ± 1.7). Impact factor and Eigenfactor score (a measure of both journal citations and caliber) were strongly correlated (r = 0.84, P = 0.0001). Comparison of impact factor per total physicians in the specialty suggested that top-ranked specialty journals were in allergy/immunology, pulmonology, and cardiothoracic surgery. Mean Eigenfactor score per total physicians showed that top journals were in cardiothoracic surgery, rheumatology, and pulmonary medicine.

CONCLUSIONS

Journal bibliometrics, which may strongly influence professional advancement and grant funding, show dramatic differences in ranking after accounting for specialty and physician population. Improved analysis and understanding of available bibliometrics, including their limitations, are necessary to appreciate their role in measuring scholarship.