Analysis of Maxillary Posterior Teeth with Cone Beam Computed Tomography
Abstract
Introduction: Endodontic surgery of maxillary posterior teeth can be challenging due to the location of the maxillary sinus relative to the tooth root as well as the thickness of buccal cortical bone. Three dimensional imaging, utilizing cone-beam computed tomography (CBCT), has improved the clinician's ability to understand the relationship of these anatomical structures. There is limited research measuring these dimensions and no published literature solely utilizing limited field of view (FOV) CBCT. Objectives: Measure the distance from the root apex to the floor of the maxillary sinus (FMS) and buccal bone thickness (BT) at the site of root resection in maxillary posterior teeth. A secondary objective correlated buccal BT with age. Materials and Methods: 128 anonymized limited FOV CBCTs met the inclusion criteria. Measurements from the root to the FMS were recorded in the corrected sagittal plane. The buccal BT, at the level of root resection (3.0 or 3.6 mm), was recorded in the axial plane and compared to the patient's age using logistic regression. Results: 420 maxillary posterior teeth were evaluated. The longest and shortest mean distance of root apices to the FMS were the buccal root of the first premolar (6.23 mm) and mesiobuccal (MB) root of the second molar (0.53 mm) respectively. The thickest mean buccal BT was covering the MB root of the second molar (2.31 mm) and the thinnest was covering the buccal root of the first premolar (0.59 mm). No correlation between buccal BT and age was noted. Conclusions: The first premolar presented with the longest distance while the MB root of the second molar was the shortest distance to the FMS. The buccal bone was thickest over the MB root of the second molar and thinnest over the first premolar. There was no correlation between buccal BT and age.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 2017
- Accession Number
- AD1063957
Entities
People
- Kelvin Z Chou
Organizations
- Uniformed Services University of the Health Sciences