RESUMO
Dens evaginatus (DE) presents as an innocuous looking tubercle of enamel on the occlusal surface of a tooth, most commonly a bicuspid. Problems can arise when the tubercle is either worn, ground, or fractured off, resulting in pulpal exposure and possible loss of vitality of the tooth. Dentists who perform orthodontic treatment should be aware of this dental anomaly, which occurs in at least two per cent of the Asian and Native Indian populations. Bicuspid extraction cases should involve the extraction of the anomalous premolars rather than the normal ones. In addition, the dentist should be mindful of occlusal changes that may occur during treatment or occlusal equilibration, both of which can jeopardize the vitality of teeth with DE. Pulp capping or partial pulpotomy has been postulated to be one of the most reliable forms of vital tooth treatment when pulp exposure is encountered following the sterile removal of the tubercle. When pulp exposure is not encountered, preventive resin composite sealing of the dentin or class I amalgam cavity preparation seems to be the treatment of choice.
Assuntos
Dente Pré-Molar/anormalidades , Exposição da Polpa Dentária/etiologia , Exposição da Polpa Dentária/terapia , Anormalidades Dentárias/complicações , Adolescente , Adulto , Povo Asiático , Criança , Esmalte Dentário/anormalidades , Capeamento da Polpa Dentária/métodos , Feminino , Humanos , Indígenas Norte-Americanos , Inuíte , Masculino , Pulpotomia/métodos , Anormalidades Dentárias/etnologia , Anormalidades Dentárias/terapia , Abrasão Dentária/etiologia , Coroa do Dente/anormalidades , Fraturas dos Dentes/etiologiaRESUMO
The anomaly of dens evaginatus manifests itself as an innocuous-looking tubercle of enamel on the occlusal surface of a premolar tooth. Problems can arise when the tubercle is either worn, ground, or fractured off, resulting in pulpal exposure and possible loss of vitality of the tooth. Orthodontists should be particularly aware of this dental anomaly, which occurs in at least 2% of the Asian and Native Indian population. Premolar extraction cases should be planned to include extraction of the anomalous premolars instead of the normal ones. In addition, the orthodontist should be wary of occlusal changes during treatment or occlusal equilibration that might jeopardize the vitality of teeth with dens evaginatus. Pulp-capping or partial pulpotomy has been postulated as the most reliable form of treatment to prevent loss of vitality of the affected teeth and to allow continued root maturation where necessary.
Assuntos
Dente Pré-Molar/anormalidades , Esmalte Dentário/anormalidades , Ortodontia Corretiva , Adolescente , Adulto , Povo Asiático , Criança , Capeamento da Polpa Dentária , Exposição da Polpa Dentária/etiologia , Feminino , Humanos , Indígenas Norte-Americanos , Masculino , Ajuste Oclusal/efeitos adversos , Odontogênese , Ortodontia Corretiva/efeitos adversos , Planejamento de Assistência ao Paciente , Doenças Periapicais/etiologia , Doenças Periapicais/terapia , Pulpotomia , Reprodutibilidade dos Testes , Tratamento do Canal Radicular , Extração Seriada , Raiz Dentária/fisiologia , Dente não Vital/etiologia , Dente não Vital/prevenção & controleRESUMO
This study compared a new parallel-tapering, threaded, split-shank post with a well-accepted parallel serrated post under applied compressive-shear loads. The posts were placed in paired, contralateral human teeth to attempt to minimize variation in the tooth model. Both initial and ultimate failure modes were observed, and the clinical significance reported. The Flexi-post system compared favorably with the Para-Post system under the conditions of this research.
Assuntos
Coroas , Teste de Materiais , Técnica para Retentor Intrarradicular , Análise do Estresse Dentário , Planejamento de Dentadura , Humanos , Falha de Prótese , Estresse Mecânico , Resistência à Tração , Fraturas dos Dentes/fisiopatologia , Raiz Dentária/lesões , Cimento de Fosfato de ZincoRESUMO
Endodontic treatment of teeth with anomalous root formation has been reported. This article reports four cases of anomalous root formation associated with the maxillary lateral incisor and the treatment regimens followed in each case. A discussion of the reasons for the success or failure achieved is provided and supports those cases previously reported.
