Repercussão clínica do cisto do ducto nasopalatino / Clinical significance of the nasopalatine duct cyst

O cisto do ducto nasopalatino (CDN), é um cisto não odontogênico da cavidade oral de ocorrência incomum. São freqüentemente assintomáticos, apresentando expansão de cortical óssea palatina e predileção pelo gênero masculino entre a 4ª e 6ª década de vida. Radiograficamente apresenta-se como uma área radiolúcida, circunscrita localizada entre as raízes dos incisivos centrais superiores. O tratamento consiste na enucleação e curetagem, com baixas taxas de recidiva. O objetivo deste artigo é destacar os aspectos clínicos, e discutir a importância do diagnóstico e a conduta terapêutica do cisto do ducto nasopalatino, através de um relato de caso... (AU)

The nasopalatine duct cyst (CDN) is a non-odontogenic cyst of the oral cavity uncommon occurrence. Are often asymptomatic, presenting palatal cortical bone expansion and predilection for males between the 4th and 6th decade of life. Radiographically presents as a radiolucent area circumscribed located between the roots of the maxillary central incisors. Treatment consists of enucleation and curettage, with low rates of recurrence. The purpose of this article is to highlight the clinical features, and discuss the importance of diagnosis and therapy of nasopalatine duct cyst, through a case report... (AU)

Estudio morfométrico del seno maxilar mediante tomografías computadorizadas: evaluación de la reconstrucción total de piso sinusal / Morphometric study of maxillary sinus by computed tomography: assessment of sinus floor bone reconstruction

La rehabilitación con implantes dentales en maxila posterior es compleja debido a la presencia del seno maxilar con sus diferentes variaciones anatómicas; el objetivo de este trabajo fue determinar el volumen óseo intrasinusal necesario para realizar la instalación de uno o mas implantes dentarios sin invadir la membrana sinusal. En 22 cráneos fueron evaluados 40 senos maxilares mediante tomografías computadorizadas (TC) realizando mediciones en los cortes axiales, coronales y sagitales. Se clasificaron los senos maxilares según el remanente de hueso alveolar y se instalo un implante de forma virtual en el lugar del primer molar superior, mediante el software implant view. Con estas medidas volumétricas finales se estableció las indicaciones reconstructivas intra sinusales a partir de los sitios donantes intrabucales mas frecuentemente evaluados en la literatura mundial. El grupo I (1mm a 4mm de reborde alveolar remanente) presentaba déficit óseo de hasta 1,98 cm3, el grupo II (4mm a 7mm) presentaba déficit de 1,06cm3; el grupo III (7mm a 10mm) presentaba un déficit de 0,67 cm3; a partir de estos resultados podemos concluir que los sitios intrabucales pueden ser utilizados en la mayoría de los grupo estudiados, incluyendo las reconstrucciones bilaterales.

Rehabilitation with dental implants in posterior maxilla is difficult because of the presence of maxillary sinus with anatomical variations. The aim of this research was to evaluate the sinus volume to install one or more implants without invading the sinus membrane. Forty (40) maxillary sinuses were evaluated in 22 skulls by computed tomography measuring in the axial, coronal and sagittal slice. The sinus were classified according to the remaining alveolar bone and a dental implant in the place of the upper first molar was virtually installed by implant view software. With this final volumetric measurement the surgical indications were established for inlay reconstruction from intra oral donor sites frequently evaluated in world literature. Group I (1mm to 4mm of alveolar ridge) showed a bone deficit of 1.98 cm3, group II (4mm to 7mm) showed a deficit of 1.06 cm3; group III (7mm to 10mm) showed a 0.67 cm3 deficit. In view of these results we concluded that intra oral donor site can be used for the three study groups and in some cases in bilateral reconstruction.