Predictive factors in the retrieval of endodontic instruments: the relationship between the fragment length and location.

Objectives: This study aimed to relate the file fragment length and location in the root canal to the retrieval chances, the clinical time required and the occurrence of secondary fractures.

Materials And Methods: Sixty clinical cases of fractured instruments were included in this study. They were classified according to the instrument length and the location of the root canal.

Resolution of Odontogenic Sinus Pathosis by Endodontic Microsurgery.

A case report is presented, in which a tooth with a chronic apical abscess that has caused a maxillary sinusitis was treated with an endodontic microsurgery. A 65-year-old female patient reported discomfort in a maxillary tooth gingiva. Clinically, a dental metal-ceramic bridge with adequate marginal adaptation, involving teeth from maxillary right canine to maxillary right second molar, was observed.

The role of the endocannabinoid system in tooth eruption: An ex vivo study.

The aim was to characterise the endocannabinoid system (ECS) in the dental pulp of teeth at different stages of eruption. Pulp of: erupted premolars (EPM), third molars in pre-eruptive (PThM), intraosseous (IThM) and eruptive stages (EThM) (n = 12 each group) were used. Messenger RNA expression of components of the ECS as cannabinoid receptors (CBr1 and CBr2), and anandamide synthetizing (NAPE-PLD) and degradation (FAAH) enzymes were measured by RT-PCR.

Dental Emergency Admissions in Emergency Oral Health Care Centers during COVID-19 Pandemic in Buenos Aires, Argentina.

This study aimed to describe patients' demographic characteristics and treatment delivered in private and public dental emergency clinics and to compare them with a pre-pandemic period. A retrospective cross-sectional study was carried out on patients attending the University Dental Hospital of the University of Buenos Aires and on one private dental clinic, situated in Buenos Aires, between March and June of 2019 and 2020. The sample considered all the patients' medical records of those requiring emergency dental treatment at these centers during that period.

Corrigendum to "Assesment of SARS-CoV-2 infection-in dentists and supporting staff at a university dental hospital in Argentina". Journal of Oral Biology and Craniofacial Research Volume 11, Issue 2 (2021) Pages 169-173.

[This corrects the article DOI: 10.1016/j.jobcr.

Assesment of SARS-CoV-2 infection-in dentists and supporting staff at a university dental hospital in Argentina.

Introduction: Oral healthcare professionals are at increased risk of infection by SARS-CoV-2. The aim of this study was to evaluate the prevalence of COVID-19 in a population of workers who provided services during the COVID-19 pandemic at a dental care and educational institution in the Buenos Aires Metropolitan Area.

Materials And Methods: This was a descriptive, cross-sectional study including 358 workers who provided essential services during the first 180 days of the COVID-19 pandemic at the Dental Hospital at Buenos Aires University School of Dentistry (FOUBA).

C-Shaped canal system in mandibular premolars evaluated by cone-beam computed tomography in a population of the Autonomous City of Buenos Aires, Argentina.

Objective: To evaluate cone-beam computed tomography images in an Argentine population in order to determine the presence of mandibular premolars with C-shaped canal system and classify them.

Methods: 697 images were observed, 170 of them fulfilling the selection criteria. Once established the presence of a C-shaped canal system, premolars were classified using Fan's criteria.