Effect of FOV and mA on Metal Artifacts on CBCT

Effect of Variations of Field of View (FOV) and Milliampere (mA) on Metal Artifacts Produced by Dental Implants in Cone Beam Computed Tomography Image Quality. (In-vitro Study)

The aim of this study is to evaluate the effect of exposure parameters as milliampere (mA) and field of view (FOV) in CBCT on metal artifact of dental implant.

Study Overview

• Status: Completed
• Conditions: Implant; Metal Artifacts
• Intervention / Treatment: Radiation: CBCT radiation

Detailed Description

Cone Beam Computed Tomography (CBCT) is considered an important valuable imaging technique in the diagnosis and treatment planning in oral and maxillofacial surgery as well as implant dentistry by means of three dimensional images which provide extra information about the buccolingual dimension of the alveolar bone with more details for bone anatomy and inclination.

To make an accurate diagnosis and treatment planning, we have to obtain images with more details and good resolution and quality which could be achieved by CBCT. However, there are some issues in scanned areas that can affect their quality such as presence of metals (metallic restorations, orthodontic appliances, dental implants, crowns) which result in artifacts which can be considered as an important cause of poor image quality which will lead to poor diagnosis.

There are many types of artifacts which can be observed on CBCT images. Beam hardening artifact is considered a common one which occurs when an x-ray beam comprised of polychromatic energies passes through an object, resulting in selective attenuation of lower energy photons. The effect is conceptually similar to a high-pass filter, in that only higher energy photons are left to contribute to the beam and thus the mean beam energy is increased ("hardened").

• Study Type: Observational
• Enrollment (Actual): 4

Contacts and Locations

Study Locations

• Egypt
  • Giza
    • Cairo, Giza, Egypt, 12511
      • Roshan Adel

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Probability Sample

Study Population

Using different dry human mandibles with dummy implants.

Description

Inclusion Criteria:

• Bio models of jaw with dummy implant.

Exclusion Criteria:

-

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Tube potential difference (FOV); Using different FOV and mA values of the CBCT machine	Radiation: CBCT radiation; CBCT scanning

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Dental implant linear measurement	The implant length and width in millimeters will be assessed in the presence of the artifacts with change in the potential difference of FOV and mA	2 months

Collaborators and Investigators

• Sponsor: Cairo University
• Investigators: Study Director: Noha Issa, Associate Prof, Cairo university

Study record dates

Study Major Dates

• Study Start (Actual): July 7, 2021
• Primary Completion (Actual): March 9, 2023
• Study Completion (Actual): April 2, 2023

Study Registration Dates

• First Submitted: June 15, 2021
• First Submitted That Met QC Criteria: June 15, 2021
• First Posted (Actual): June 23, 2021

Study Record Updates

• Last Update Posted (Actual): October 24, 2024
• Last Update Submitted That Met QC Criteria: October 22, 2024
• Last Verified: October 1, 2024

More Information

Terms related to this study

• Other Study ID Numbers: ORAD-CU-2021

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No