Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
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Three-dimensional observations of the incisive foramen on cone-beam computed tomography image analysis

  • Kim, Yeon-Tae (Department of Periodontology, Daejeon Dental Hospital, Wonkwang University College of Dentistry) ;
  • Lee, Jae-Hong (Department of Periodontology, Daejeon Dental Hospital, Wonkwang University College of Dentistry) ;
  • Jeong, Seong-Nyum (Department of Periodontology, Daejeon Dental Hospital, Wonkwang University College of Dentistry)
  • Received : 2019.05.28
  • Accepted : 2020.01.20
  • Published : 2020.02.28
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Abstract

Purpose: The purpose of this study was to utilize cone-beam computed tomography (CBCT) image analysis to obtain anatomical information related to the morphology of the incisive foramen to provide useful data regarding implant placement and clinical procedures such as anesthesia. Methods: The study included 167 patients who underwent CBCT scans over 20 years. Three components were measured: 1) the anteroposterior and mediolateral diameter of the incisive foramen, 2) the horizontal bone thickness anterior to the incisive foramen, and 3) the vertical bone height coronal to the incisive foramen. All measurements were expressed as mean±standard deviation and were analyzed by a single examiner. Results: The anteroposterior diameter of the incisive foramen was wider than the mediolateral diameter (P<0.001). The diameter of the incisive foramen in patients in whom the central incisors were present was smaller than that in those in whom at least one central incisor was absent, but no statistically significant difference between the groups was observed. The horizontal bone thickness in the patients with central incisors was statistically significantly larger than that in the patients without at least one central incisor (P<0.001). The same pattern was observed with regard to vertical height, but that difference was not statistically significant. Conclusions: The buccal bone thickness anterior to the incisive foramen was significantly decreased after central incisor loss. It is necessary to identify the morphology of the bone and the location of the incisive foramen via CBCT to avoid invasion of the incisive foramen and nasopalatine canal.

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