Three-dimensional CBCT based evaluation of the inferior part of the maxillary sinus: Retrospective Study

Abstract

The maxillary sinus is the largest of the four paranasal sinuses in humans, and its close proximity to the teeth means that caution is required during dental treatment. In particular, implant surgeries involving the maxillary posterior teeth should include evaluating the inferior part of the maxillary sinus. The purpose of this study is to evaluate the differences by comparing the inferior part of the maxillary sinus based on the nasal cavity floor (NCF) between patients (male 30, female 30) genders through the use of the three-dimensional (3-D) program that can facilitate 3-D visualizations. The present study results obtained from 3-D visualizations using cone beam computed tomography (CBCT) data showed that the inferior part of the maxillary sinus was mostly larger in males than in females. In addition, the utilization of 3-D visualization data was more likely to assure accuracy than when using data obtained by two-dimensional (2-D) imaging. Therefore, 3-D visualizations of the inferior part of the maxillary sinus will contribute to accurate analyses of its anatomical structure during implant surgery and other operations. Further studies utilizing 3-D visualization will yield useful fundamental data and guidelines for future research.

Influence of Anatomical Parameters on the Dimensions of the Subantral Space and Sinus Mucosa Thickening after Sinus Floor Elevation. A Retrospective Cone Beam Computed Tomography Study

“…The use of the base of the nasal floor (x-axis) as the reference plane was adopted for both bi-dimensional [10,11] and 3-dimensional [15] evaluations. The region of interest of…”

“…The use of the base of the nasal floor (x-axis) as the reference plane was adopted for both bi-dimensional [10,11] and 3-dimensional [15] evaluations. The region of interest of the present study (i.e., the region where implants are inserted) was delimited by the sinus walls and the x-axis.…”

“…Suggestions on what to measure and how to take measurements on CBCT images have been provided in several studies [2,[9][10][11][12]. The use of the base of the nasal floor as a reference plane was adopted for both bi-dimensional [10,11,13,14] and 3-dimensional [15] evaluations. That axis delimits the lower region of the sinus where the implant will be inserted.…”

“…The dimensional changes of the elevated space over time can be easily assessed [10][11][12][13][14]. Several studies have been published reporting the dimensions of the elevated space after sinus floor elevation and the dimensional modifications over time [10,11,[13][14][15][16][17][18][19]. Other anatomical and surgical parameters have been analyzed in various reports.…”

Morphological Changes in Total and Inferior Part of Maxillary Sinus After Le Fort I Osteotomy, as Determined by Cone-Beam Computed Tomography

“…Moreover, only a very limited number of studies have investigated the influence of the direction of maxilla movement on the morphological structure of MS. 7 The morphology of the inferior part of the maxillary sinus (IMS) is the anatomically and clinically important structure that can be related to many clinical practices, such as tooth extraction, orthodontic tooth movement, and MS floor augmentation. [12][13][14] Le Fort I osteotomy may have a major impact on the morphology of the IMS. 15 Meanwhile, changes in the morphology and airflow of MS may lead to remodeling of the sinus floor.…”