RESUMO
El síndrome del cromosoma 18 en anillo es un desorden inusual cromosómico con varios cambios generalizados en el cuerpo y boca. Este artículo presenta el reporte del caso de un niño con síndrome del cromosoma 18 en anillo con retardo mental. Esta combinación raramente estudiada, presenta cambios generales y bucales predominantes y retención prolongada de dientes deciduos. El odontólogo debe estar preparado para detectar estos hallazgos en este tipo de pacientes y tratarlos precozmente proporcionando mejoras en su calidad de vida.
Ring chromosome 18 syndrome is a rare chromosomal disorder, with many changes in the general body and mouth. This article reports the case of a child with the syndrome ring chromosome 18 and mental retardation. This combination rarely studied shows oral and general predominant changes and prolonged retention of deciduous teeth. The dentist must be prepared to recognize these findings and treat them at early stages to promote improvements in their quality of life.
Assuntos
Humanos , Masculino , Criança , Qualidade de Vida , Deficiência Intelectual , HipotireoidismoRESUMO
It has been claimed that resin monomers may incompletely penetrate into demineralized collagen network, which could form a weak hybrid layer. In consequence, it has been proposed that removal of the exposed collagen network could improve adhesion to dentine. The interface between a water/ethanol-based one-bottle adhesive (Single Bond, 3M) which is devoid of acid monomers, and deproteinated surface of primary dentine was evaluated by SEM. Dentine disks were obtained from 20 primary teeth. Two disks were used to standardize the application time of sodium hypochlorite (NaOCl) for getting an effective deproteination. The remaining 18 disks were equally divided into two groups and treated as follows: control group (CG) 35% phosphoric acid (PA) for 15s; treated group/deproteination (TG) 35% PA for 15s+10% NaOCl for 3 min. Single Bond and Z250 (3M) were placed on all disks according to the manufacturer's instructions. The 18 resin-dentine disks were fractured to obtain hemi-disks and processed for SEM. The examination of the CG specimens showed a typical hybrid layer and the presence of numerous tags with few and short microtags. The TG specimens, which did not present hybrid layer, also exhibited numerous tags, with few and short microtags. Some areas between the tags showed fibrillar-like projections, which appeared to be mineralized collagen fibrils, which were incorporated into the adhesive. Thus, our results suggest that some chemical interaction may occur between mineralized dentinal collagen and the adhesive used.
Assuntos
Bis-Fenol A-Glicidil Metacrilato/química , Cimentação/métodos , Colágeno/química , Dentina/química , Dentina/ultraestrutura , Dente Molar/química , Proteínas/isolamento & purificação , Adesividade , Adsorção , Calcificação Fisiológica , Permeabilidade da Dentina , Adesivos Dentinários/química , Humanos , Técnicas In Vitro , Teste de Materiais , Microscopia Eletrônica de Varredura , Hipoclorito de Sódio/química , Propriedades de SuperfícieRESUMO
Os autores apresentam uma breve revisão sobre as displasias ectodérmicas, um conjunto de alterações que invariavelmente comprometem diversas estruturas bucais. Descrevem, ainda, dois casos de displasia ectodérmica hipoidrótica atendidos no Núcleo Integrado de Atendimento Preventivo ao Paciente Especial (NIAPE) da Universidade Paulista (UNIP), onde é ressaltada a conduta odontológica seguida durante o tratamento