Effects of missing teeth and nasal septal deviation on maxillary sinus volume: a pilot study

Abstract

Purpose Tooth extraction and the projection of the tooth roots into the maxillary sinus are reported to greatly reduce the bone height from the alveolar ridge to the maxillary sinus floor, while missing teeth are reported to lead to the expansion of the maxillary sinus, all of which are important considerations during dental implant treatment for the maxillary molar region. Therefore, assessing the anatomical characteristics of the maxillary sinus acting as complicating factors is crucial before sinus augmentation. We conducted a three-dimensional examination of the effects of missing teeth and nasal septal deviation (NSD) on maxillary sinus volume (MSV). Methods We selected participants with two or more missing teeth from patients who underwent maxillary sinus augmentation for a unilateral free-end saddle between April 2019 and December 2020. We calculated the MSV and NSD using cone-beam computed tomography (CBCT). We compared the relationships of the presence/absence of teeth and NSD with MSV bilaterally in each patient using the Wilcoxon t-test. p-values < 0.05 denoted statistical significance. Results This study included 30 patients (30 sinuses; 12 men, 18 women). The average patient age was 58.2 ± 10.2 years (men, 60.4 ± 3.7 years; women, 59.2 ± 4.5 years; range, 40–77 years). The mean number of missing teeth was 2.98 ± 1.01: 13 patients had two missing teeth and 17 had three or more missing teeth. Nine patients (30%) had NSD. The mean MSV on the ipsilateral and contralateral sides of the NSD was 21.50 ± 3.84 cm3 and 22.10 ± 3.56 cm3, respectively; thus, NSD did not affect MSV (p = 0.150). The mean MSV on the edentulous and non-edentulous sides was 21.58 ± 3.89 cm3 and 21.77 ± 4.30 cm3, respectively; thus, the MSV was significantly smaller on the edentulous side (p = 0.00036). Conclusion Although this study was a limited preoperative study, three-dimensional measurement of the maxillary sinus with CBCT in partially edentulous patients revealed that missing teeth lead to substantial reductions in MSV, while NSD was not associated with MSV.

The Effectiveness and Practicality of a Novel Barrier Membrane for the Open Window in Maxillary Sinus Augmentation with a Lateral Approach, with Risk Indicators for Bone Graft Displacement and Bone Height Decrease: A Prospective Study in Humans

“…That pressure from sinus membrane swelling and bleeding can cause bone graft material to displace outside the sinus cavity. Furthermore, women were more at risk for bone graft displacement, which may be due to the effect of menopause on bone regeneration [36], as it has been reported that the volume of the maxillary sinus is significantly smaller in women than in men [37][38][39]. Many women in this study were in their 50s or older.…”

Evaluation of clinical and radiographic warning signs for prediction of oroantral communication following tooth extractions

“…Well-known risk factors predisposing individuals to this complication include the extraction of the last remaining tooth from the arch or a tooth with periapical in ammation [1,4,5]. Morphometric studies have highlighted the importance of the size, shape, and extent of the maxillary sinus, as well as the relationship between the roots of maxillary teeth and the oor of the sinus [6][7][8][9][10][11][12][13][14][15][16]. These works provide essential insights into the anatomical variability of the maxillary sinus and highlight the bene ts of analysing cone beam computed tomography (CBCT) over orthopantomography (OPG)[6, 9-11, 13, 16-18].…”

Determining the effects of deviated nasal septum on maxillary sinus volume using cone-beam computed tomography

“…Their final growth and form show many variations, and everyone can have different sinus formation (1). Dentists pay attention to the maxillary sinus because it is adjacent to teeth and relevant structures (2). Maxillary sinuses have an average volume of 6-8 cm 3 at birth.…”