Influence of Head Position on the CBCT Accuracy in Assessment of the Proximity of the Root Apices to the Inferior Alveolar Canal.

Sadaf Adibi, Shoaleh Shahidi, Saeed Nikanjam, Maryam Paknahad, Mohammadali Ranjbar

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Article in Journal of dentistry (Shiraz, Iran), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

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6citing papers in PubMed

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6 citing papers in PubMed.

Accuracy of bone height and thickness measurements in cone beam computed tomography using different voxel sizes in maxilla and mandible.Caspian journal of internal medicine · 2026
Article
Effect of head orientation on mandibular bone linear measurements in CBCT imaging.BMC oral health · 2025
Article
Evaluation of the linear and volumetric measuring changes in different positions in CBCT.Clinical and experimental dental research · 2023
Article
Influence of head positioning during cone-beam CT imaging on the accuracy of virtual 3D models.Dento maxillo facial radiology · 2022
Article
Validation of different protocols of inferior alveolar canal tracing using cone beam computed tomography (CBCT).Dento maxillo facial radiology · 2022
Article
The Effect of Mandibular Angulation on Preoperative Assessment of Dental Implant Insertion at Premolar Region: CBCT Study.BioMed research international · 2022
Article

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5 authors.

Sadaf AdibiDept. of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

Shoaleh ShahidiDept. of Oral and Maxillofacial Radiology and Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

Saeed NikanjamUndergraduate Student, Student Research Committee, Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

Maryam PaknahadOral and Dental Disease Research Center, Dept. of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

Mohammadali RanjbarDept. of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

statement of the problemThe most important risk factor for inferior alveolar nerve (IAN) damage is the proximity of the mandibular root apices to the alveolar canal. Failure to position the patient's head at standardized orientation during cone beam computed tomography (CBCT) scans might adversely affect the relative position of the alveolar canal and mandibular root apices with subsequent treatment failure. PURPOSE: The purpose of the present study was to investigate the influence of the orientations of the skull during the scanning procedure on the accuracy of CBCT images in determining the positional relationship of the mandibular tooth apices to the alveolar canal. MATERIALS AND

methodCBCT scans of 7 human dry skulls were obtained by using NewTom VGi CBCT in standard, tilt, flexion, extension and rotation positions of the head. The shortest radiographic distance between the mandibular tooth apices and the IAN canal of 20 points were measured on cross sectional images of CBCT in all position scans. A sample t-test was used to compare the measurements at different head position with the standard position values.

resultsSignificant differences were found in the measurements of normal and tilt orientations. However, there was no statistically significant difference between the measurements in standard position and other deviated positions. The mean errors in all head positions were less than 0.5mm.

conclusionAlteration of patient head positioning during CBCT scanning does not affect the relative position of the IAN and the apices of posterior teeth.

Indexed as

Cone beam computed tomographyHeadInferior alveolar nerveTooth apex

Identifiers

PMID29034272

PMCPMC5634357

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.