An observational study in Mandibular Canal Visibility, MANDIBLE and CBCT Segmentation, sponsored by Recep Tayyip Erdogan University Training and Research Hospital. Not yet recruiting. Open to participants aged 18 Years to 75 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-07.
Sponsored by Recep Tayyip Erdogan University Training and Research Hospital · Observational
The purpose of this retrospective observational study is to investigate whether mandibular canal dimensions and sublingual fossa morphology can serve as radiographic predictors of the mandibular lateral lingual canal (MLLC) using cone-beam computed tomography (CBCT). CBCT images of adults with unilateral MLLC will be retrospectively evaluated. Mandibular canal diameter, mental foramen diameter, and sublingual fossa depth will be compared between the side with the MLLC and the contralateral side. In addition, the location, diameter, and course of the MLLC will be analyzed to identify radiographic features associated with its presence and to improve preoperative assessment for mandibular surgical procedures.
Recep Tayyip Erdogan University Training and Research Hospital is the lead sponsor of 88 studies on the registry; 19 are open to participants now.
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The study population will consist of adults aged 18 to 75 years with previously acquired diagnostic cone-beam computed tomography (CBCT) images archived in the Department of Oral and Maxillofacial Radiology at Recep Tayyip Erdoğan University Faculty of Dentistry. Only individuals with a unilateral mandibular lateral lingual canal (MLLC) identified on CBCT images and meeting the eligibility criteria will be included.
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Exclusion Criteria
Adult participants with unilateral mandibular lateral lingual canal (MLLC) identified on cone-beam computed tomography (CBCT). Morphometric measurements, including mandibular canal diameter, mental foramen diameter, sublingual fossa depth, and MLLC characteristics, will be obtained from the side containing the MLLC.
The contralateral side of the same participants without a mandibular lateral lingual canal. Morphometric measurements will be obtained using the same methodology and compared with the side containing the MLLC.
Mandibular Canal Diameter
Mandibular canal diameter will be measured in millimeters (mm) on coronal CBCT images at the level of the mandibular first molar furcation on both the side with the mandibular lateral lingual canal (MLLC) and the contralateral side. Higher values indicate a larger mandibular canal diameter.
Time frame: Baseline (retrospective CBCT assessment)
Mental Foramen Diameter
Mental foramen diameter will be measured in millimeters (mm) in the superoinferior direction on CBCT images on both sides. Higher values indicate a larger mental foramen diameter.
Time frame: Baseline (retrospective CBCT assessment)
Sublingual Fossa Depth
Sublingual fossa depth will be measured in millimeters (mm) as the perpendicular distance from the deepest point of the sublingual fossa to a reference line connecting the superior and inferior borders of the lingual cortical surface. Higher values indicate a deeper sublingual fossa.
Time frame: Baseline (retrospective CBCT assessment)
Mandibular Lateral Lingual Canal Diameter
The diameter of the mandibular lateral lingual canal (MLLC) foramen will be measured in millimeters (mm) on CBCT images. Higher values indicate a larger MLLC diameter.
Time frame: Baseline (retrospective CBCT assessment)
Mandibular Lateral Lingual Canal Location
The anatomical location of the mandibular lateral lingual canal will be determined according to the tooth region through which the canal courses. The outcome will be reported as the frequency and percentage of canals identified in each anatomical location.
Time frame: Baseline (retrospective CBCT assessment)
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Plan to share: No
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This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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Recep Tayyip Erdogan University Training and Research Hospital