Comparative Study on Images of Full Crown with Four Kinds of Restoration Materials by CBCT and MSCT

doi:10.13701/j.cnki.kqyxyj.2021.12.008

Abstract

Abstract: Objective: To explore the artifact characteristics of images of full crown made with different restoration materials by cone beam computed tomography (CBCT) and multi-slice CT (MSCT), and to explore the difference of radiation dose between two techniques. Methods: A total of 148 patients who used different restoration materials for full crown in our hospital from January 2018 to October 2020 were selected. They were divided into a silver-palladium alloy group (38 cases, 75 teeth), cobalt-chromium alloy group (36 cases, 73 tablets), nickel-chromium alloy group (34 cases, 77 tablets), and pure titanium group (40 cases, 79 tablets), all of whom received CBCT and MSCT examinations. The artifact index, area of artifact, shape of artifact, and other features were compared, and the effective radiation dose (ED) during the inspection processes was also inspected. Results: The artifact index, buccal-lingual direction, far-near-medium artifact diameter, strip shape, and solid artifact area of four restoration materials with CBCT were smaller than those with MSCT (P<0.05). The images were increased with the increasing of material density (P<0.05). The ED of four restoration materials during CBCT examination was significantly lower than that during MSCT examination (P＜0.05). Conclusion: Concerning to the full crown images, CBCT is better than MSCT, and low-density restoration materials is better.

Key words: cone beam computed tomography, multi-slice CT, dental restoration, dental materials, image quality, radiation dose

HUANG Wenbo, DU Shenzhao, ZENG Jing, GU Yaodong. Comparative Study on Images of Full Crown with Four Kinds of Restoration Materials by CBCT and MSCT[J]. Journal of Oral Science Research, 2021, 37(12): 1094-1098.

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