Analysis of maxillary sinus septa by cone-beam computed tomography

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.

A importância da elevação do seio maxilar para a instalação de implantes dentários

“…Computed tomography appeared in the 1970s, being a technology capable of offering 3D images and consequently subsidizing diagnoses and surgical planning with better precision, in particular offering a quantitative and qualitative analysis of bone structures for future implant placement (Molon, 2015). Cone beam or cone beam computed tomography has Research, Society and Development, v. 9, n. 10, e4969108825, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i10.8825 recently appeared, aimed at dental interests, which in addition to guaranteeing images in different planes, without overlapping, with excellent quality and resolution, also subjects the patient to a relatively low dose of radiation (Jacobs et al, 2018;Souza, 2019). In addition to having a compact size, ease of use and better cost-benefit, given the lower financial investment required to acquire the device, the image quality of cone beam computed tomography devices may vary depending on the exposure protocol when compared to multislice medical computed tomography (Jacobs et al, 2018).…”

Prevalência de alterações em seios maxilares por meio de radiografias panorâmicas digitais da Universidade Tiradentes

“…O SM teve suas primeiras descrições por volta do século XV (Sperber, 1980), caracterizando-se por ser uma cavidade situada no corpo da maxila, de forma piramidal quadrangular. Torna-se relevante o conhecimento de seus aspectos radiográficos, já que é visualizado como uma ampla área radiolúcida sobre a imagem dos ápices dos pré-molares e molares superiores, que frequentemente é dividida em duas ou mais cavidades por septos, estes correspondem a elevações ósseas lineares que vão de uma parede a outra do SM (Caldera et al, 2011;Souza et al, 2019).…”

“…Torna-se necessário que o Cirurgiãodentista saiba avaliar e interpretar em exames de imagens não apenas estruturas dentárias e ósseas, como também as alterações dos tecidos moles. Nesse contexto, o laudo radiográfico pode detectar precocemente patologias, adiantando o processo de tratamento ou mesmo prevenção e melhora no prognóstico da doença (Souza et al, 2019).…”