Bibliometric Analysis And Patent Trends Of Dental Implantology In Domestic And Abroad In Recent Decade

ObjectiveA model of bibliometric analysis of medical thematic literature was established in this research.Taking dental implant as an example,bibliometric indicators and visualization analysis of literatures on dental implantology in domestic and abroad in recent decade were carried out.The cooperation network,hot topics and citation network analysis of dental implantology disciplines in domestic and abroad were visually displayed through scientific knowledge atlas.Valuable literatures were searched and the research hotspots of dental implantology in China and foreign countries in recent ten years were analysed.the patent literature related to dental implantology in China were analyzed to provide information reference for medical staff,scientific researchers,practitioners and researchers in dental implant industry,and provide some reference and enlightenment for the research and development of dental implantology in China.Tool selection and methodological reference are provided for scientific researchers and managers in other disciplines to evaluate scientific research achievements.MethodsBy retrieving relevant literature in the field of dental implantology in Web of Science database and Wanfang database,bibliometric indicators such as volume of publications,countries/regions,publishing institutions,source publications,authors,keywords,research topics and other bibliometric indicators in the bibliometric data were analyzed by bibliometric and visualization.Cooperations among countries/regions,institutions and authors were obtained.The cited authors,journals and literatures were analyzed to get high-impact journals,authors and literatures.The domestic dental implant patent literature data were analyzed quantitatively and qualitatively by using Patsnap Patent Retrieval and Analysis Tool.ResultsLiterature Analysis of the international dental implant field:A total of 17075 papers or reviews in this field were retrieved from the WOS database from 2008 to 2017.The number of published papers increased linearly year by year,and the authors,institutions,countries/regions,publications and funds ranking the top were counted.In the field of cooperation analysis,the United States,Germany,Italy,Brazil and Switzerland are the most frequently cooperate countries;Berne University,University of Zurich,University of Sao Paulo,University of Anuzio Kitty Pescala,University of Gothenburg,University of Michigan and other universities are the leading institutions in the field of cooperation;Piattelli A,Wang HL,Lang NP,Botticelli D(etc.)are the leading authors cooperation groups.Cooperations between authors are mainly concentrated within the same institutions,countries or regions.Cooperations between different authors,institutions and countries is more frequently in foreign countries,especially in American and other European countries;The top three impact factor of publications were Clinical Oral Implants Research(IF=4.305),Journal of Periodontology(IF=3.392),Clinical Implant Dentistry and Related Research(IF=3.097).The scores of impact factor of the top ten journals are generally distributed in the range of 1-4 points.The impact factors,the Immediacy index of journals are on the rise.The Eigenfactor score decreased significantly in the period of 2015-2017,which may be related to the suddenly increase in the literature volume in this field;In the analysis of the hotspot topics in this field,we can conclude that the main research topics include clinical application effect,dental implant materials,dental implant technology research,biomechanical analysis and other four hotspot topics.Literature Analysis of the domestic dental implant field:6006 relevant literature records in this field were retrieved from Wanfang database from 2008 to 2017,and the total number of articles published showed an upward trend year by year.At the same time,the authors,institutions and publications ranked in the top ranking were counted.The top three institutions were The Fourth Military Medical University,Shanghai Jiaotong University,Peking University.These institutions also rank the top in the international publication volume from China,the publishing institutions are mainly concentrated in universities and affiliated oral hospitals;Most of the other highyielding authors are from universities or affiliated hospitals of universities.The cooperation among domestic authors are mainly within the same institutions;Lack of stable inter-agency collaboration groups of authors in China,and few dental implantology professional journals in China;The research topics of domestic dental implantology mainly focus on dental implant materials(titanium,etc.),CBCT(Cone Beam CT),dentition loss,restoration methods,clinical efficacy and postoperative nursing of dental implant,maxillary sinus elevation,Peri-implant periodontitis,GBR(Guided Bone Regeneration Technology)and other aspects.Patent trends analysis of dental implant in domestic:In recent decade,the number of dental implant patents in China has shown a rapid upward trend,Patent types were mainly focus on the use of new types and inventions,and there are few patents for appearance design.Patent technology field mainly distributes in A61C8/00,while patent applications in other patented technology fields are relatively few.Most of the high-value dental implant patents come from foreign countries.The main types of patents are A61C8/00.There are few high-value dental implant patents in China.ConclusionsThis study shows that dental implant literature has grown significantly in terms of total number of journals,authors,organization,patents and author collaborations.Most key bibliometric indicators are on the rise.The development of dental implantology is diversified,and there are more and more cooperations between countries and transnational institutions,which has played a significant role in promoting the development of the discipline.There are some differences in the distribution of research topics between China and foreign countries.The basic research,application transformation,clinical research and subdivision of dental implantology in China still need to be strengthened.