Contributions of reformatted computed tomography and panoramic radiography in the localization of third molars relative to the maxillary sinus

Bouquet, Annabelle; Coudert, Jean-Loup; Bourgeois, Denis; Mazoyer, J F; Bossard, D.

doi:10.1016/j.tripleo.2004.02.082

Cited by 50 publications

(71 citation statements)

References 14 publications

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“…In another study, CT showed that roots were lateral to the sinus cavity in 7 out of 30 cases, whereas on panoramic radiograph suggested that roots penetrated the maxillary sinus floor. 16 We found interruptions of the maxillary sinus floor in 51% of the cases in which the roots projected into the maxillary sinus. This sign was considered an indicator of actual root protrusion into the maxillary sinus.…”

Section: Discussionmentioning

confidence: 68%

“…For them, assessment with panoramic radiograph is difficult due to superimposition of anatomical structures, ghost image formation, as well as horizontal and vertical distortions. 16 According to Sharan and Madjar, 10 the length of a root protruded into the maxillary sinus is 32.1 larger in a panoramic radiograph when compared with measures obtained from CT scans. In these cases, the panoramic radiograph will show a large portion of the root projecting onto the sinus cavity, whereas the CT images will show that only the root apex is in contact with the maxillary sinus floor.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of panoramic radiography and CBCT to identify maxillary posterior roots invading the maxillary sinus

Lopes¹,

Gamba²,

Bertinato³

et al. 2016

Dentomaxillofacial Radiology

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Objectives: Given the limitations of panoramic radiography for assessing topographic relationship of maxillary teeth with sinus floor, the purpose of this study was to assess signs on panoramic radiography that could predict root protrusion into the sinus. Methods: A total of 46 individuals (330 maxillary posterior teeth) who underwent panoramic radiography and CBCT were enrolled. The relationship between the posterior teeth and the maxillary sinus and panoramic radiography signs (projection of the root apices, interruption of the maxillary sinus floor, lamina dura, darkening in the root apices, and superiorly curving sinus floor enveloping the associated tooth root) associated with protrusion of root apices into the sinus were evaluated. Results: There were differences between the imaging modalities about the positioning of the root apices regarding the sinus (p , 0.05). Only the projecting of the root apices and the interruption of the sinus floor on panoramic radiography were predictors for the root protrusion (p , 0.05). No significant association was observed for the other panoramic radiography signs (p . 0.05). Conclusions: The root projection into the sinus and the interruption of the sinus floor are indicative signs of root protrusion into the sinus on CBCT.

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Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Comparison of panoramic radiography and CBCT to identify maxillary posterior roots invading the maxillary sinus

Lopes¹,

Gamba²,

Bertinato³

et al. 2016

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

show abstract

“…Nowadays more imaging techniques have become available for the preoperative planning of oral implant surgery, each with their own strength and weaknesses and specific indications [1]. In many cases, the use of three-dimensional imaging may be beneficial as compared to two-dimensional imaging and overcome its limitations [2,3].…”

Section: Introductionmentioning

confidence: 99%

Spiral Computed Tomography Based Maxillary Sinus Imaging in Relation to Tooth Loss, Implant Placement and Potential Grafting Procedure

Shahbazian¹,

Duan²,

Hu³

et al. 2010

JOMR

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Objectives:The purpose of the present study was to explore the maxillary sinus anatomy, its variations and volume in patients with a need for maxillary implant placement. Materials and Methods: Maxillary sinus data of 101 consecutive patients who underwent spiral computed tomography (CT) scans for preoperative implant planning in the maxilla at the Department of Periodontology, University Hospital, KULeuven were retrospectively evaluated. The alveolar bone height was measured on serial cross-sectional images between alveolar crest and sinus floor, parallel to the tooth axis. In order to describe the size of the maxillary sinus anteroposterior (AP) and mediolateral (ML) diameters of the sinus were measured. Results:The results indicated that the alveolar bone height was significantly higher in the premolar regions in comparison to the molar region (n = 46, P < 0.01). The age showed negative relation to bone dimension (r = -0.32, P = 0.04). Anterior and posterior border of the maxillary sinuses were mostly located in the first premolar (49%) and second molar (84%) regions, respectively. Maxillary sinus septa were indentified in 47% of the maxillary antra. Almost 2/3 (66%) of the patients showed major (> 4 mm) mucosal thickening mostly at the level of the sinus floor. The present sample did not allow revealing any significant difference (P > 0.05) in maxillary sinus dimensions for partially dentate and edentulous subjects. Conclusions: Cross-sectional imaging can be used in order to obtain more accurate information on the morphology, variation, and the amount of maxillary bone adjacent to the maxillary sinus.

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“…Anyhow, two-dimensional radiographs suffer from superimposition artifacts inherent to the scan method frequently resulting in overprojection of maxillary teeth roots onto the sinus floor. Authors of two studies correlating CT scans and OPG images findings confirmed that OPG alone is unreliable in assessing the relationship between the teeth roots and the maxillary sinus [17][18]. Similarly the reliability of PA radiographs in detection of root penetration in the maxillary sinus also needs further investigations [19].…”

Section: Introductionmentioning

confidence: 96%

“…It is interesting to know, that several studies assessed the vertical and horizontal relationship between the tooth root apex and the inferior wall of the maxillary sinus using CT diagnostic method [12][13][14][15][16]. It was concluded that CT is more accurate than OPG in assessing the tooth root and sinus relationship [17]. Anyhow, two-dimensional radiographs suffer from superimposition artifacts inherent to the scan method frequently resulting in overprojection of maxillary teeth roots onto the sinus floor.…”

Section: Introductionmentioning

confidence: 99%

Reliability of Periapical Radiographs and Orthopantomograms in Detection of Tooth Root Protrusion in the Maxillary Sinus: Correlation Results with Cone Beam Computed Tomography

Hassan

2010

JOMR

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Objectives:The purpose of the present study was to investigate the reliability of both periapical radiographs and orthopantomograms for exact detection of tooth root protrusion in the maxillary sinus by correlating the results with cone beam computed tomography. Material and methods: A database of 1400 patients scanned with cone beam computed tomography (CBCT) was searched for matching periapical (PA) radiographs and orthopantogram (OPG) images of maxillary premolars and molars. Matching OPG images datasets of 101 patients with 628 teeth and PA radiographs datasets of 93 patients with 359 teeth were identified. Four observers assessed the relationship between the apex of tooth root and the maxillary sinus per tooth on PA radiographs, OPG and CBCT images using the following classification: root tip is in the sinus (class 1), root tip is against the sinus wall (class 2) and root tip is not in the sinus (class 3). Results: Overall correlation between OPG and CBCT images scores was 50%, 26% and 56.1% for class 1, class 2 and class 3, respectively (Cohen's kappa [weighted] = 0.1). Overall correlation between PA radiographs and CBCT images was 75.8%, 15.8% and 56.9% for class 1, class 2 and class 3, respectively (Cohen's kappa [weighted] = 0.24). In both the OPG images and the PA radiographs datasets, class 1 correlation was most frequently observed with the first and second molars. Conclusions:The results demonstrated that both periapical radiographs and orthopantomograms are not reliable in determination of exact relationship between the apex of tooth root and the maxillary sinus floor. Periapical radiography is slightly more reliable than orthopantomography in determining this relationship.

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Contributions of reformatted computed tomography and panoramic radiography in the localization of third molars relative to the maxillary sinus

Cited by 50 publications

References 14 publications

Comparison of panoramic radiography and CBCT to identify maxillary posterior roots invading the maxillary sinus

Comparison of panoramic radiography and CBCT to identify maxillary posterior roots invading the maxillary sinus

Spiral Computed Tomography Based Maxillary Sinus Imaging in Relation to Tooth Loss, Implant Placement and Potential Grafting Procedure

Reliability of Periapical Radiographs and Orthopantomograms in Detection of Tooth Root Protrusion in the Maxillary Sinus: Correlation Results with Cone Beam Computed Tomography

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