Controlled antifungal behavior on Ti6Al4V nanostructured by chemical nanopatterning.

Infections associated with bone implant prostheses are mainly related to bacterial contaminations. Recent investigations have suggested an important role of opportunistic fungal cells associated with non-responding antibacterial treatments. Thus, in order to evaluate the early Candida albicans (C. albicans) behavior; we built on Ti6Al4V surfaces nanopores (NPs) with controlled diameters applying oxidative nanopatterning for 30 (NP30) and 60 min (NP60). As a result of nanopatterning NPs with diameters of 12 and 24 nm were synthesized. Physicochemical differences were observed between both types of NPs, the most highlighting of which are anatase phase formation and improved hydrophilicity of NP60. C. albicans adhesion and colonization was assessed using scanning electron microscopy and by yeast counting for viability evaluation. The fungal behavior on the substrates was significantly different, showing an initial exopolysaccharide secretion stimulated by the nanopatterned surfaces. Larger NPs led to an important reduction in viability with decreased cell-surface contact bonds. The obtained results demonstrate that special control in the fabrication of nanostructured TiO2 materials can improve the early fungal resistance, especially for dental implants.

Cuidados en el tratamiento odontológico de pacientes pediátricos cardiópatas con transposición de grandes vasos: reporte de un caso / Care in the dental treatment of pediatric heart patients with transposition of the creat vessels: a case report

En este artículo se reporta el caso de un paciente de 12 años de edad, con una cardiopatía congénita conocida como transposición de grandes vasos, quien se presenta a consulta en la Clínica de Odontopediatría de la Facultad de Odontología de la Universidad de Baja California en Mexicali, México, para quien se estableció un protocolo de atencióncon interconsulta con el médico cardiólogo que lo atendió, así como con especialistas en periodoncia y odontopediatría. Para prevenir la endocarditis bacteriana se recomendó la profilaxis antibiótica en cada cita, administrándole clindamicina (600 mg) dos horas antes del procedimiento dental y posteriormente una tableta cada ocho horas durante siete días.Localmente, en cada cita se le administró mepivacaína al 1% como anestésico local, para su tratamiento periodontal y dental. Normalmente, los pacientes cardiópatas con antecedenteshospitalarios requieren una atención especial del odontopediatra en el control de la conducta en cualquier tipo de tratamiento dental...

This article reports the case of a 12-year-old patient who suffered from a congenital heart disease known as transposition of the great vessels, and attended the pediatric dental careservice at the Baja California University Dental School in Mexicali, Mexico. Treatment was planned based on consultation with the cardiologist, the periodontist, and the pediatric dentist. To prevent the risk of bacterial endocarditis, 600 mg clindamycin 2 hours before the dental procedures and 1 tablet every 8 hours for seven days afterwards was prescribed.1% mepivacaine was used as local anesthetic to perform periodontal and dental therapy. Usually, heart patients with history of hospitalization require special behavior management by the pediatric dentist for any kind of dental treatment...