Scientometric analysis of vital pulp therapy studies.

AIM: To present a scientometric analysis of the entire body of scientific publications in the field of vital pulp therapy (VPT) and analyse the research trends and popular topics. METHODOLOGY: A comprehensive literature search was conducted in the Web of Science and Scopus databases on 21 August 2020 to identify all articles related to VPT. The publications were reviewed and basic research parameters were collected, including publication year, patterns of authorship, geographical distribution of scientific productions, journals, h-index, study design and keyword analysis. Web of Science, Scopus and Google Scholar databases were used for the citation analysis of the ten top cited articles. The data were analysed using VOSviewer and visualized by tables and diagrams. RESULTS: In total, 1197 VPT-associated items were identified from 64 countries in 176 journals. The majority of papers were published in the Journal of Endodontics. The United States of America was the leading country for number of publications, citations, h-index and collaborations. The distribution of articles based on study design was as follows: basic science (35%), clinical (27%), observational studies (26%) and review publications (12%). The most frequently occurring keywords were pulpotomy, mineral trioxide aggregate, calcium hydroxide and direct pulp capping. CONCLUSIONS: This scientometric analysis outlines the evolutionary trends and the productivity of researchers and countries in the field of vital pulp therapy. Research output is dominated by basic science articles involving innovative materials published in high impact factor dental journals.

Periodontal and atherosclerosis-induced diseases.

AIM: This article reviews the available studies assessing the association between chronic inflammatory periodontal diseases with atherosclerosis-induced diseases, cardiovascular diseases, and their complications, using standard evidence based criteria. METHODS: This study is based on a literature search using Medline medical database covering the period from 2001 to April 2006 and applying specific inclusion criteria. The authors reviewed randomized controlled trials, systematic reviews, narrative reviews and meta-analyses, which investigated the relationship of periodontal and cardiovascular diseases with clinically derived documentation. The critical evaluation of the studies was performed based on the Impact Factor of the journals, on which they were published. RESULTS: On the basis of clinical aspects, the periodontitis-cardiovascular association was evaluated in 2 randomized controlled trials, 5 systematic reviews, 5 narrative reviews and 2 meta-analyses. The evidence linking periodontitis with an increased risk for cardiovascular disease and atherosclerosis is limited. CONCLUSION: Current evidence supporting the causal, periodontitis-cardiovascular disease, association is weak. There is a clear need for new, well designed observational and intervention studies to confirm that thus far observed associations explore the validity of the associations in diverse populations, to establish whether they are causal in nature and determine potential benefits of periodontal intervention in reducing the risk for these medical conditions.

Double-to-single target ionization ratio for electron capture in fast p-He collisions.

We have used the ion storage ring CRYRING and its internal gas-jet target and recoil-ion-momentum spectrometer to measure absolute cross sections for transfer ionization (TI: p+He-->H0+He2++e(-)) in 2.5-4.5 MeV p-He collisions with separate Thomas (TTI) and kinematic (KTI) TI contributions. The probability for electron emission in kinematical capture decreases with increasing velocity and appears to approach the photoionization shakeoff value (1.63%) [T. Aberg, Phys. Rev. A 2, 1726 (1970)]]. The velocity dependence of the TTI cross section is consistent with the theoretically predicted v(-11) scaling [J. S. Briggs and K. Taulbjerg, J. Phys. B 12, 2565 (1979)]].