A computed tomographic study of the distances between the maxillary sinus floor and the apices of the maxillary posterior teeth

Eberhardt, James A.; Torabinejad, Mahmoud; Christiansen, Edwin L.

doi:10.1016/0030-4220(92)90133-b

Cited by 180 publications

(170 citation statements)

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“…However, individual anatomical variation exists and dentists will encounter patients where not just the maxillary molars but also premolars and very occasionally canines are closely related to the maxillary sinus. 1 There are specific features of the clinical and radiographic assessment that will alert the dentist to the increased risk of either a fractured tuberosity or antral communication if exodontia were to proceed with standard forceps removal.…”

Section: Introductionmentioning

confidence: 99%

Oro-antral fistulae and fractured tuberosities

Bell

2011

Br Dent J

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Section: Introductionmentioning

confidence: 99%

Oro-antral fistulae and fractured tuberosities

Bell

2011

Br Dent J

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“…Therefore, recent studies have focused on using CT (4,12,13) or cone-beam computed tomographic (CBCT) imaging (14)(15)(16)(17)(18) for assessing the proximity between the roots and the sinus floor.…”

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confidence: 99%

Proximity of Premolar Roots to Maxillary Sinus: A Radiographic Survey Using Cone-beam Computed Tomography

Arx

Fodich

Bornstein

2014

Journal of Endodontics

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Introduction: The proximity of the roots of the posterior maxillary teeth to the maxillary sinus is a constant challenge to the dental practitioner. Because the majority of studies have assessed the relationship regarding molars, the present study focused on premolars. Methods: Cone-beam computed tomographic images of 192 patients were reconstructed in sagittal, coronal, and axial planes to quantify the distances between the root apices of the maxillary premolars and the adjacent maxillary sinus. Measurements were taken for each root, and data were correlated with age, sex, side, and presence of both or absence of 1 of the 2 premolars. Results: A total of 296 teeth (177 first and 119 second premolars) were evaluated. The mean distances from buccal roots of the first premolars to the border of the maxillary sinus in the sagittal, coronal, and axial planes ranged from 5.15 AE 2.99 to 8.28 AE 6.27 mm. From palatal roots, the mean distances ranged from 4.20 AE 3.69 to 7.17 AE 6.14 mm. The mean distances of second premolars were markedly shorter in buccal roots between 2.32 AE 2.19 and 3.28 AE 3.17 mm and in palatal roots between 2.68 AE 3.58 and 3.80 AE 3.71 mm, respectively. The frequency of a premolar root protrusion into the maxillary sinus was very low in first premolars (0%-7.2%) but higher in second premolars (2.5%-13.6%). Sex, age, side, and presence/absence of premolars failed to significantly influence the mean distances between premolar roots and the maxillary sinus. Conclusions: Based on the calculated mean distances of the present study, only few premolars (and if so second premolars) would present a risk of violating the border of the maxillary sinus during conventional or surgical endodontic treatment or in case of tooth extraction. (J Endod 2014;40:1541-1548

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“…Si bien dependerá del tamaño del seno y de su grado de neumatización, existe una estrecha relación entre las raíces del segundo y primer molar superior, seguido por los premolares, con el piso del seno maxilar. Es importante destacar que estas raíces se encuentran separadas del seno por hueso cortical de espesor variable, (alrededor de 2 mm) 5 y que en ocasiones, éstas pueden protruir a la cavidad sinusal quedando sólo cubiertas por el mucoperiostio del seno (membrana de Schneiderian) 6 . Existen además numerosas anastomosis vasculares que perforan este espacio y pueden servir de canales para la propagación de bacterias, facilitando la extensión de la infección hacia el seno maxilar 7 .…”

Section: Introductionunclassified