OOIR: Observatory of International Research

Papers

(The H4-Index of International Endodontic Journal is 39. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-11-01 to 2025-11-01.)

Article	Citations
Clinical outcome of guided endodontics versus freehand drilling: Comment	271
Inflammatory profile of apical periodontitis exacerbated by cigarette smoke inhalation: Histological and immunohistochemical analysis in rats	219
Lipopolysaccharides and hydrogen peroxide induce contrasting pathological conditions in dental pulpal cells	184
A critical analysis of research methods and experimental models to study irrigants and irrigation systems	172
Effect of kinematics on the torque/force generation, surface characteristics, and shaping ability of a nickel‐titanium rotary glide path instrument: An ex vivo study	143
Precision‐milled simulated curved root canals in bovine dentine for the assessment of chemo‐mechanical root canal preparation	111
	97
Activin a regulates vascular formation and stabilization in direct coculture of dental pulp stem cells and endothelial cells	96
Substance P/calcitonin gene‐related peptide and their receptors expression in human periodontal ligament after root canal preparation with five different systems	90
Immunomodulatory effect of IL‐1RA in LPS‐activated macrophage/dental pulp stem cells co‐culture	89
The financial and quality of life impact of urgent dental presentations: A cross‐sectional study	88
Targeting hexokinase 1 alleviates NLRP3‐mediated inflammation in apical periodontitis: A laboratory investigation	84
Exploring approaches to pulp vitality assessment: A scoping review of nontraditional methods	80
Gender diversity in endodontics: Women's representation at recent biennial meetings	77
IWP‐2 modulates the immunomodulatory properties of human dental pulp stem cells in vitro	73
Angiogenic and neurogenic potential of dental‐derived stem cells for functional pulp regeneration: A narrative review	71
New consultant statistical advisor	70
Top 100 most‐cited scientific articles in regenerative endodontics 2019–2023: A bibliometric analysis	70
Periapical healing following endodontic microsurgery with collagen‐based bone‐filling material: A randomized controlled clinical trial	68
Micro‐computed tomographic evaluation of dentinal microcracks in response to progressive taper enlargement in root canals of maxillary molars	66
The use of electrodermal activity in pulpal diagnosis and dental pain assessment	63
Response to the letter regarding our article, ‘Potential predisposing features of external cervical resorption: An observational study’ (Patel et al., 2025)	62
In‐depth investigation of FAM20A insufficiency effects on deciduous dental pulp cells: Altered behaviours, osteogenic differentiation, and inflammatory gene expression	59
Micro‐CT evaluation of a nanodiamond irrigant for hard‐tissue debris removal during sonic agitation	59
Influence of dental bleaching on the pulp tissue: A systematic review of in vivo studies	57

Volumetric changes in root canal sealers in ex vivo and a novel animal model approach	56
Expression of chronic pain genes in apical periodontitis tissues	55
Selenium ameliorates inflammation by decreasing autophagic flux and mitogen‐activated protein kinase signalling on experimentally induced rat periapical lesions	55
Present status and future directions—Vital pulp treatment and pulp preservation strategies	50
Influence of ethylenediaminetetraacetic acid on regenerative endodontics: A systematic review	50
Success rate of orthograde endodontic retreatment after failed apicectomy – A retrospective study	49
Intracanal removal and apical extrusion of filling material after retreatment using rotary or reciprocating instruments: A new approach using human cadavers	48
Gut microbiota dysbiosis links chronic apical periodontitis to liver fibrosis in nonalcoholic fatty liver disease: Insights from a mouse model	47
Issue Information	46
Dental pulp lymphatic vessel dynamics during tooth development and pulp stimulation in rodents	46
Modulation of Prickle2 Expression to Facilitate Dentine Formation: A Laboratory Investigation	46
Efficacy of mixture of injectable‐platelet‐rich fibrin and type‐1 collagen particles on the closure of through‐and‐through periapical bone defects: A randomized controlled trial	44
Elevated serum hepatic transaminases in apical periodontitis individuals	40
A Thermosensitive Gel Containing Biodegradable Nanoparticles Carrying Calcium Hydroxide as Antibacterial Intracanal Therapy	39