Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.03419
Revista de Odontologia da UNESP
Original Article

Analysis of maxillary sinus septa by cone-beam computed tomography

Análise de septos dos seios maxilares por meio de tomografia computadorizada de feixe cônico

Camila Furtado de SOUZA; Adriano de Oliveira LOURES; Daniella Guedes de Figueiredo LOPES; Karina Lopes DEVITO

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Abstract

Abstract: Introduction: Pneumatization of the maxillary sinus may make it impossible to insert implants directly in the posterior region of the maxilla, and in these cases, the solution is to submit the patient to maxillary sinus floor augmentation surgery. The most common complication of this surgery is sinus membrane perforation. Anatomical variations of the internal space of the sinus, such as the bone septa, may further hamper detachment of this membrane.

Objective: To evaluate the prevalence and characteristics of sinus septa in patients from the Zona da Mata Mineira (Minas Gerais, Brazil), to offer relevant information for a safer planning of surgeries involving this region.

Material and method: A total of 120 patients (240 sinuses) were analyzed using cone-beam computed tomography (CBCT) images, verifying the presence of sinus septa and classifying them for size and anteroposterior location.

Result: Of the 120 patients analyzed, 45 (37.50%) had sinus septa, 66 septa in total. Of these, 33 (50%) were present in the middle region of the maxillary sinus and the mean septum size was 7.23 mm. There was no significant difference in the septum size between the genders or between the right and left sides.

Conclusion: The high rates of incidence of sinus septa justify their study, which should be based mainly on accurate exams, such as CBCT, since they represent one of the most relevant anatomical variations for the cases of sinus surgeries.

Keywords

Radiology, anatomy, maxillary sinus, cone-beam computed tomography

Resumo

Resumo: Introdução: A pneumatização do seio maxilar pode impossibilitar a instalação direta de implantes na região posterior da maxila, e a solução nesses casos é submeter o paciente a uma cirurgia de levantamento do assoalho do seio maxilar. A complicação mais comum dessa cirurgia é a perfuração da membrana sinusal. Variações anatômicas no interior do seio como, por exemplo, os septos ósseos, podem dificultar ainda mais o descolamento dessa membrana.

Objetivo: Avaliar a prevalência e as características dos septos sinusais em pacientes da Zona da Mata Mineira (Minas Gerais, Brasil), oferecendo informações relevantes para um planejamento mais seguro das cirurgias envolvendo essa região.

Material e método: Um total de 240 seios (120 pacientes) foram analisados, por meio de imagens de tomografia computadorizada de feixe cônico (TCFC), verificando-se a presença de septos sinusais e classificando-os quanto ao tamanho e à localização anteroposterior.

Resultado: Dos 120 pacientes analisados, 45 (37,50%) apresentaram septos sinusais, sendo 66 septos no total. Destes, 33 (50%) estavam presentes na região média do seio maxilar e o tamanho médio dos septos foi de 7,23 mm. Não existiu diferença significativa no tamanho dos septos entre os sexos ou entre os lados direito e esquerdo.

Conclusão: As elevadas taxas de incidência dos septos sinusais justificam o seu estudo, que deve ser baseado principalmente em exames acurados, como a TCFC, uma vez que representam uma das variações anatômicas mais relevantes para os casos de cirurgias de levantamentos de seio.
 

Palavras-chave

Radiologia, anatomia, seio maxilar, tomografia computadorizada de feixe cônico

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