RESUMO

The calcifying cystic odontogenic tumour (CCOT) is a rare benign cystic neoplasm not infrequently associated with odontoma. This report documents a case of CCOT associated with compound odontoma arising in the anterior maxilla in a 25-year-old woman. Conventional radiographs showed a large calcified mass with poorly visualized radiolucent margins. The extent and condition of the internal structure of the CCOT associated with odontoma was able to be determined based on radiographic findings from cone beam computed tomography. This advanced image technique proved to be extremely useful in the radiographic assessment of this particular neoplasm of the jawbones.

Assuntos

RESUMO

This paper presents a case report of a left mandibular second premolar with three canals and three different apical foramina. A 39-year-old male patient presented to our clinic with pain in the mandibular left second premolar. Initially, pain was caused by cold stimulus and later was spontaneously. The intraoral clinical examination revealed a fractured amalgam restoration with occlusal caries. Percussion and cold (Endo-Frost) tests were positive. The radiographic examination showed the presence of two roots. The probable diagnosis was an acute pulpitis. After access cavity, it was observed remaining roof of the pulp chamber and mild bleeding in the tooth lingual area, indicating the possible presence of a third canal. The endodontic treatment was completed in a single session using Root ZX apex locator and K3 NiTi rotary system with surgical diameter corresponding to a .02/45 file in the three canals and irrigation with 1% sodium hypochlorite. The canals were obtured with gutta-percha cones and Sealer 26 using the lateral condensation technique. After 1 year of follow-up, the tooth was asymptomatic and periapical repair was observed radiographically. Internal alterations should be considered during the endodontic treatment of mandibular second premolars. The correct diagnosis of these alterations by the analysis of preoperative radiographs can help the location of two or more canals, thereby avoiding root therapy failure.

Assuntos

RESUMO

This paper presents a case report of a left mandibular second premolar with three canals and three different apical foramina. A 39-year-old male patient presented to our clinic with pain in the mandibular left second premolar. Initially, pain was caused by cold stimulus and later was spontaneously. The intraoral clinical examination revealed a fractured amalgam restoration with occlusal caries. Percussion and cold (Endo-Frost) tests were positive. The radiographic examination showed the presence of two roots. The probable diagnosis was an acute pulpitis. After access cavity, it was observed remaining roof of the pulp chamber and mild bleeding in the tooth lingual area, indicating the possible presence of a third canal. The endodontic treatment was completed in a single session using Root ZX apex locator and K3 NiTi rotary system with surgical diameter corresponding to a .02/45 file in the three canals and irrigation with 1 percent sodium hypochlorite. The canals were obtured with gutta-percha cones and Sealer 26 using the lateral condensation technique. After 1 year of follow-up, the tooth was asymptomatic and periapical repair was observed radiographically. Internal alterations should be considered during the endodontic treatment of mandibular second premolars. The correct diagnosis of these alterations by the analysis of preoperative radiographs can help the location of two or more canals, thereby avoiding root therapy failure.

O presente artigo teve como objetivo a apresentação de um caso clínico de um segundo pré-molar inferior esquerdo com três canais com três forames distintos. Paciente de 39 anos de idade, leucoderma, relatava dor inicialmente estimulada ao frio e posteriormente dor espontânea no referido dente. No exame intraoral foi constatada restauração de amálgama fraturada e cárie oclusal. Os testes de sensibilidade à percussão e ao frio (Endo-Frost) foram positivos. O exame radiográfico evidenciou a presença de duas raízes. O diagnóstico provável foi de pulpite aguda. Após o preparo de acesso à câmara pulpar notou-se a presença de teto remanescente e um leve sangramento, sendo possível localizar um terceiro canal na região lingual. O tratamento endodôntico foi realizado em uma única sessão, com auxílio do localizador apical Root ZX, e o preparo biomecânico com sistema rotatório com limas de NiTi K3 com diâmetro cirúrgico correspondente ao instrumento .02/45 nos três canais, e a solução química auxiliar hipoclorito de sódio 1 por cento. A obturação foi realizada por condensação lateral de guta-percha e cimento Sealer26. Durante o período de proservação de 1 ano, o dente apresentou-se clinicamente assintomático com reparação dos tecidos periapicais observada radiograficamente. Alterações internas devem ser consideradas durante tratamento endodôntico em segundos pré-molares inferiores. O correto diagnóstico destas alterações por meio da análise de radiografias pré-operatórias podem auxiliar na localização de dois ou mais canais, evitando dessa maneira o insucesso do tratamento a ser realizado.

Assuntos

RESUMO

Estudou-se a morfologia interna radicular de molares superiores e inferiores posterior a modelagem cominstrumentos de níquel-titânio em rotação contínua. Oitenta molares superiores e inferiores de humanosforam aleatoriamente distribuídos em quatro grupos, de acordo com os elementos dentais e os diferentes tipos de instrumentos: K , ProTaper, ProFile e K-FlexoFile. Posterior à instrumentação dos canais radiculares valendo-se de uma técnica de preparo com avanço progressivo cérvico-apical, realizou-se a moldagem com Aquasil ULV. A seguir, os dentes foram submetidos à desmineralização em ácido clorídrico a 35%, obtendo-se assim o molde correspondente à cavidade preparada. Estes foram analisados quanto à qualidade da morfologia interna por três examinadores. Os resultados foram tabulados e submetidos à análise estatística. Nos molares superiores pode-se observar 94,3% de formas regulares cônicas afuniladas, enquanto que, nos molares inferiores superfícies regulares cônicas foram verificadas em 86,95% das amostras analisadas. De um modo geral, os instrumentos de níquel-titânio influenciaram positivamente na qualidade da forma regular cônica afunilada cérvico-apical, com destaque para os instrumentos K e Protaper

The aim of the present study was to analyze the quality of the internal morphology of the root canals of maxillary molars, subsequent to the cleaning and shaping with nickel-titanium instruments with continuous rotation. Forty maxillary molar human teeth, were distributed on the basis of different types of endodontic instruments: K , ProTaper, ProFile e K-FlexoFile (control). The molding of the prepared root canals was carried out with Aquasil ULV impression material. The teeth were submitted to demineralization with chloridric acid at 35%. For the verification of the quality of the internal morphology three examiners analyzed the moldings. The technique used with ProTaper instruments showed a preparation with greater regularity index, considering the three thirds of the root canal. In maxillary molars it was observed 94,30% of regular conic form; in mandibular molar were verified surface with conic regular form in 86,95% of samples. K and Protaper showed a preparation with greater regularity index

RESUMO

The purpose of the study is demonstrate the use of dental traction as an alternative treatment for unsuccessful lateral sealing of the perforation of a tooth prescribed for extraction, in which the patient showed an extensive amalgam tattoo with significant cosmetic impairment

Assuntos