An evaluation of the relationship between maxillary sinus anterior wall depression and maxillary sinus opacity by comput

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ORIGINAL ARTICLE

An evaluation of the relationship between maxillary sinus anterior wall depression and maxillary sinus opacity by computed tomography and panoramic radiography Gozde Serindere1 · Ceren Aktuna Belgin1 Received: 14 February 2020 / Accepted: 24 March 2020 © Japanese Society for Oral and Maxillofacial Radiology and Springer Nature Singapore Pte Ltd. 2020

Abstract Objective  Maxillary sinus anterior wall depression (AWD) has been associated with patterns such as the presence of panoramic innominate line and silent sinus syndrome. The aim of this study was to evaluate the relationship between AWD of maxillary sinus and both maxillary sinus opacity and the presence of innominate line using computed tomography (CT) and panoramic radiography (PR). Materials and methods  250 CT and PR images (122 female, 128male) which had been taken for various reasons were randomly selected from the radiology archive of the our department. Innominate line visibility in PR is divided into three as invisible, obscure and clear. On CT images, the distance between guide line and the deepest point of the maxillary sinus anterior wall was calculated as AWD. The presence of maxillary sinus opacity and maxillary sinus AWD were evaluated on CT images. Demographic information such as age, gender and localization of the findings were noted in all measurements. Results  In 143 (57.2%) patients, the innominate line (clear and obscure patterns) was seen on the PR images. AWD was observed in 104 (41.6%) CT images. The presence of maxillary sinus opacity was observed in 117 (46.8%) images. The mean right anterior wall depth was 5.69 and 4.88 in males and females, respectively, while the mean left anterior wall depth was 5.64 and 4.94 in males and females, respectively. Right wall depth was significantly higher in males (p  0.05). Conclusions  Anterior wall depression was found to be associated with both maxillary sinus opacity and the visibility of the innominate line. Patients with AWD should be considered as susceptible to maxillary sinus diseases. Keywords  Anterior wall depression · Maxillary sinus · Computed tomography · Panoramic radiography · Maxillary sinus opacity

Introduction The development of minimally invasive surgical techniques has made it necessary to have a better understanding of the anatomy of the paranasal sinus. Lack of information about this anatomic region can cause serious complications, such as the leakage of cerebrospinal fluid, meningitis, or blindness, at the time of operation [1]. Anatomic variations in

* Gozde Serindere [email protected] 1



Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Hatay Mustafa Kemal University, 31060 Hatay, Turkey

sinonasal structures are also responsible for the etiology of chronic and recurrent sinusitis [2]. Panoramic radiography (PR) and computed tomography (CT) are routinely used for radiographic examination of sinonasal region [3]. However, most anatomical structures cannot be distinguished due to the superposition of direct radiographs. CT is t