Visibility, location, and morphology of the primary maxillary sinus ostium and presence of accessory ostia: a retrospective analysis using cone beam computed tomography (CBCT)

Yeung, Andy Wai Kan; Colsoul, Nicolas; Montalvao, Carla; Hung, Kuo Feng; Jacobs, Reinhilde; Bornstein, Michael M.

doi:10.1007/s00784-019-02829-9

Cited by 26 publications

(29 citation statements)

References 34 publications

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“…In the present study, seven accessory maxillary ostia (AMO) were detected, reaching a fraction of 9.7% of the total sinuses evaluated. This percentage was lower than that reported by another tomographic study (17.9%) in which younger patients were included compared to the present study [22]. In that study, it was shown that patient age and status of dentition were influencing factors on the number of AMOs.…”

Section: Discussioncontrasting

confidence: 89%

“…The post-operative edema and bleeding that increase the mucosa thickness might also reach the region of the MSO and causing its obstruction and a possible impairment drainage capacity of sinus mucus. The reduction of the patency and obstruction of the MSO and infundibulum can lead to inflammatory and/or infectious processes of the sinus cavity, causing acute or chronic sinusitis [20][21][22].…”

Section: Discussionmentioning

confidence: 99%

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Involvement of the maxillary sinus ostium (MSO) in the edematous processes after sinus floor augmentation: a cone-beam computed tomographic study

Sakuma

Ferri²,

Imai

et al. 2020

Int J Implant Dent

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Background: After sinus floor augmentation, a thickening of the sinus mucosa has been described. The aim of the present study was to evaluate the involvement of the maxillary sinus ostium in the edematous processes after a sinus floor augmentation procedure. Methods: Seventy-two cone-beam computerized tomographies (CBSTs) were taken before sinus floor augmentation and after 1 week and 9 months from surgery and analyses. Sinus mucosa thickness and area, ostium diameter and patency, and extension of the post-surgical transient mucosal thickening in relation to the ostium were evaluated on the CBCTs for all three periods. The term "virtual" when referring to sinus mucosa thickness and area was introduced because of the edema and bleeding that both contributed to a transient thickening and additional elevation of the sinus mucosa. Results: The mean virtual thickness of the sinus mucosa was 2.7 ± 4.0 mm, 7.7 ± 7.1 mm, 1.7 ± 2.0 mm before surgery, and after 1 week and 9 months. The virtual mucosa area was 37.2 ± 52.5 mm 2 , 184.5 ± 153.8 mm 2 , and 34.0 ± 50.7 mm 2. The ostium diameter at the three periods evaluated was 1.8 ± 0.5 mm, 1.1 ± 0.6 mm, 1.5 ± 0.8 mm, respectively. Three infundibula (4.2%) were found out of patency before surgery while this number increased to 14 (19.4%) after 1 week. Nine months after surgery, only one infundibulum (1.4%) was out of patency, however, without presenting signs of sinus pathologies. The extension of the mucosal edema on the palatal sinus was reduced after 9 months of healing. Conclusions: One week after sinus floor augmentation, the maxillary sinus mucosa increased in dimensions and in several cases involved the ostium, reducing its diameter and producing a transient loss of patency. After 9 months of healing, the initial conditions were recovered.

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Section: Discussioncontrasting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Involvement of the maxillary sinus ostium (MSO) in the edematous processes after sinus floor augmentation: a cone-beam computed tomographic study

Sakuma

Ferri²,

Imai

et al. 2020

Int J Implant Dent

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“…Among the analyzed anatomical variables, only the presence of Haller cells had a statistically significant correlation with postoperative complications and the authors suggest prescription of nasal decongestants in these cases. Also, the visibility of the ostium in the FOV did not influence the agreement between observers in the present study for all three main questions addressed, and the extension of the FOV until this orifice, although scientifically highly interesting, may be questioned (Bornstein, Horner, & Jacobs, ) (Yeung et al, ). In fact, several drawbacks have to be considered when increasing the FOV.…”

Section: Discussionmentioning

confidence: 46%

Sinus floor elevation or referral for further diagnosis and therapy: A comparison of maxillary sinus assessment by ENT specialists and dentists using cone beam computed tomography

Janner

Dubach

Suter

et al. 2020

Clinical Oral Implants Res

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Objectives:To compare ear, nose, and throat (ENT) specialists and dentists assessing health or pathology of maxillary sinuses using cone beam computed tomography (CBCT). Material and methods:Two ENT specialists and two oral surgeons assessed 100 CBCT datasets of healthy patients referred for dental implant placement in the posterior maxilla and decided on the possibility of sinus floor elevation or the necessity for further diagnostic examinations based solely on radiographic findings. Inter-rater agreements within the same specialty were calculated with Cohen's kappa and overall agreements with Fleiss kappa, and factors influencing the decisions taken were evaluated using regression analyses. Results:The correlation between all four raters was generally fair to moderate. The intra-specialty comparison showed a lower correlation between dentists than between ENT specialists. Absence of membrane thickening and total or subtotal sinus opacification showed the highest predictive value for a consensus in favor of sinus floor elevation and ENT referral, respectively. Flat membrane thickening with an irregular surface morphology was associated with disagreement between the examiners. Dome-shaped membrane thickenings were often considered as to be referred by dentists but not by ENTs. Conclusion:The assessment of maxillary sinuses using CBCT imaging exhibited unsatisfactory agreement between ENT specialists and oral surgeons. Referral guidelines based on accidental CBCT findings that aim to diagnose relevant sinus pathologies early and avoid unnecessary diagnostics and/or therapies are needed, and an initial proposal for such recommendations is provided. Further research on correct interpretation of sinus findings and a validation of the present recommendations are required. K E Y W O R D Scone beam computed tomography, dental implants, ear, nose, and throat, maxillary sinus, sinus floor elevation

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“…In the literature, the size of AMO varied from 0.5 mm to 5 mm [ 2 ]. Additionally, AMO can be present in unilateral, bilateral, single, or multiple in one side [ 2 , 6 ].…”

Section: Discussionmentioning

confidence: 99%

Rare Variation of Accessory Maxillary Ostium

AlQabbani

Aldhahri

Alhumaizi

2020

Cureus

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Visibility, location, and morphology of the primary maxillary sinus ostium and presence of accessory ostia: a retrospective analysis using cone beam computed tomography (CBCT)

Cited by 26 publications

References 34 publications

Involvement of the maxillary sinus ostium (MSO) in the edematous processes after sinus floor augmentation: a cone-beam computed tomographic study

Involvement of the maxillary sinus ostium (MSO) in the edematous processes after sinus floor augmentation: a cone-beam computed tomographic study

Sinus floor elevation or referral for further diagnosis and therapy: A comparison of maxillary sinus assessment by ENT specialists and dentists using cone beam computed tomography

Rare Variation of Accessory Maxillary Ostium

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