Evaluation of the contour of edentulous jaw sections in the transversal plane and the buccolingual vertical-level disparity in CBCT and panoramic radiography images: a retrospective comparative study.

Autor: Ketabi AR; Department of Prosthodontics, School of Dentistry, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen-Straße 45, 58455, Witten, Germany. ali-reza.ketabi@uni-wh.de.; Private Dental Office, Epplestraße 29 a, 70597, Stuttgart, Germany. ali-reza.ketabi@uni-wh.de., Piwowarczyk A; Department of Prosthodontics, School of Dentistry, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen-Straße 45, 58455, Witten, Germany., Schulz MC; Department of Oral and Maxillofacial Surgery, University Hospital Tübingen, Eberhard Karls Universität Tübingen, Osianderstraße 2-8, 72076, Tübingen, Germany., Lauer HC; Department of Prosthodontics, Center for Dentistry and Oral Medicine (Carolinum), Goethe-University, Theodor-Stern-Kai 7, 60596, Frankfurt, Germany., Hassfeld S; Department of Oral and Maxillofacial Surgery, Dortmund Hospital GmbH and Faculty of Health, Witten/Herdecke University, Muensterstr. 240, 44145, Dortmund, Germany.
Jazyk: angličtina
Zdroj: International journal of implant dentistry [Int J Implant Dent] 2023 Jan 03; Vol. 9 (1), pp. 1. Date of Electronic Publication: 2023 Jan 03.
DOI: 10.1186/s40729-022-00466-8
Abstrakt: Purpose: This study investigates whether edentulous jaw sections in the planned implant position exhibit jaw contours funnel-shaped or exhibit pronounced retraction of the jaw (unusual jaw contours) in the transversal plane of the three-dimensional (3D) images, not visible in two-dimensional (2D) images.
Methods: A total of 335 patients with an edentulous section of the jaw that required dental implants were selected. Anonymised radiologic patients' data were collected, comprising cone-beam computed tomography (CBCT) images of the edentulous jaw sections. In the first stage, unusual jaw contours were examined, including funnel-shaped or pronounced retraction of the jaw and hypodense regions with an undercut and/or bone deficit. In the second stage, the variation in the height of the alveolar ridge between the lingual and buccal contour in the edentulous jaw sections was assessed.
Results: The CBCT images of an unusual jaw contour were observed in 8 cases (2.4%) in the maxilla on the left and 10 cases (3%) in the maxilla on the right. In the mandible, a jaw contour deviates in 39 cases (12.1%) on the left side and 39 cases (12.1%) on the right side. A height difference was detected in the upper jaw in 307 cases and the lower jaw in 265 cases. The discrepancy was 2.09 mm (± 2.25 mm) in the maxilla and 3.97 mm (± 3.45 mm) in the mandible.
Conclusions: The CBCT scan provides useful information to avoid complications in the preoperative planning phase and surgical planning in implant dentistry.
(© 2023. The Author(s).)
Databáze: MEDLINE
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