RESUMO
We report a case of multiple dental traumas in a 15-year-old school boy who was hit by a stone. Clinical examinations revealed the avulsion of teeth 21, 22, and 23, an uncomplicated crown fracture of tooth 41, and a complicated crown fracture (CCF) of teeth 11, 31, and 33. An alveolar bone fracture and a root fracture in the apical third of tooth 23 were as well noted on radiographs. The avulsed teeth were replanted and rigidly splinted after an extraoral dry time of 90 min. Endodontic treatments were performed on teeth with CCFs. The dental morphology was restored using polyethylene fiber-reinforced composite resin. Endodontic obturations were performed on replanted teeth after the arrest of external root resorptions by a long-term calcium hydroxide dressing. Esthetics and function were recovered with a 2.5-year follow-up period.
Assuntos
Dente Canino/lesões , Incisivo/lesões , Avulsão Dentária/terapia , Fraturas dos Dentes/terapia , Adolescente , Processo Alveolar/lesões , Resinas Compostas/química , Materiais Dentários/química , Restauração Dentária Permanente/métodos , Seguimentos , Humanos , Masculino , Fraturas Maxilares/terapia , Polietileno/química , Polietilenos/química , Tratamento do Canal Radicular , Reabsorção da Raiz/terapia , Contenções , Ápice Dentário/lesões , Coroa do Dente/lesões , Reimplante DentárioRESUMO
Bleaching has been suggested by several authors in order to treat the unaesthetic aspect of dental fluorosis. Many results are, however, unsatisfactory. A different method, based on the structural characteristics of the fluorotic tooth and the organic and exogenous nature of fluorotic enamel stains, includes three principal stages: 1--enamel etching with 12% HCl in order to eliminate the posteruptive calcified layer that covers the fluorotic enamel surface and to denude the microcavities containing the organic elements; 2--application of pure manufactured sodium hypochlorite to remove these organic stains; and 3--filling the chemically opened microcavities with a light-cured dental adhesive to provide the tooth with a smooth and even surface and to prevent restaining. To improve the aesthetic aspect of intensely discolored teeth, it is possible to use a variety of tints available in several composite resin kits. Teeth with a rough enamel surface react more positively than ones with a smooth surface. The enamel adhesives provide better results than the amelo-dentinal ones.
Assuntos
Fluorose Dentária/terapia , Cimentos de Resina , Silicatos , Clareamento Dental/métodos , Condicionamento Ácido do Dente , Resinas Compostas , Colagem Dentária , Cimentos Dentários , Infiltração Dentária , Humanos , Ácido Clorídrico , Ácido Silícico , Hipoclorito de Sódio , Propriedades de SuperfícieRESUMO
This study compared the effectiveness of nine root-canal preparation techniques of fluorotic teeth. Seventy-three canal systems from 53 extracted human fluorotic teeth were instrumented. Pre-and postinstrumentation measurements were taken of the root canal systems in the cervical, middle and apical thirds; they proved the efficiency of the method using Rispi and Helifile. The results of this study were also extrapolated to the clinical situation.
