[Pneumococcal osteoarticular infections in children admitted to a Pediatric Reference Hospital from Misiones, Argentina. Thirteen years of surveillance]. / Infección neumocócica osteoarticular en niños atendidos en un hospital pediátrico de referencia de Misiones, Argentina. Trece años de vigilancia.

Streptococcus pneumoniae is a rare cause of osteoarticular infections. We describe 5documented cases that occurred in 2005, 2009, 2011, 2015 and 2017 in patients admitted to the Pediatric Provincial Reference Hospital of Misiones. These cases corresponded to a 4-year-old boy and 4 girls aged 11, 10, 6 years and 4 months with a diagnosis of osteomyelitis of the scapula and humerus, arthritis of the hip, ankle and osteomyelitis of the distal fibula. All of them were in good general condition on admission and one of them was seropositive for human immunodeficiency virus. All the recovered isolates were susceptible to ß-lactams and only one isolate showed joint resistance to macrolides and tetracycline. Three isolates were serotyped, 2of which carried vaccine serotypes (19F and 7F). Despite its low frequency, the etiology of S.pneumoniae should be considered among the osteoarticular infections. Our findings enhance the role of the Bacteriology laboratory in the diagnosis by microbiological culture and contribute to documenting the epidemiological behavior of this pathogen.

Relationship between the gingival biotype and the results of root covering surgical procedures: A systematic review.

Background: Tissue biotypes are related to the results of periodontal therapy, conventional prosthodontics, implant therapy and root covering procedures. We conducted a systematic review (SR) of the literature about the relationship between the gingival biotype and the results of root covering surgical procedures. Material and Methods: A PICO question was defined. Two independent reviewers conducted electronic and manual literature searches, which covered studies up to August 31, 2020, in the National Library of Medicine (PubMed MEDLINE), EBSCO, Science Direct and Cochrane. The inclusion criteria were all root covering procedures in individuals with different gingival biotypes. The final result of the different surgical techniques was evaluated by the Root Coverage Esthetic Score (RES). The Methodological Index for the identification of biases for Non-Randomized Studies was applied. Results: Only four articles fulfilled the inclusion criteria. These studies adequately reported the percentage of root coverage after surgery, and two recorded the entire RES index. Complete root coverage was achieved in a range between 70 - 86.12% in patients with thin biotype and between 77.8 - 96% in patients with a thick biotype. The aesthetic results were not compromised by the initial classification of the biotype. The treatments used were subepithelial connective tissue graft with coronally displaced flap or its modification. No significant differences were found. Conclusions: When the gingival biotypes are analyzed as independent variables, none of the root coverage procedures are affected by the classification of the gingival biotype. Key words:Root coverage, gingival recession, gingival biotype.