Impact of imaging protocol and tube current adjustment on the radiation dose in CBCT imaging of mandibular incisors.

IF 3.1 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Investigations Pub Date : 2025-08-13 DOI:10.1007/s00784-025-06499-8

Jardel Francisco Mazzi-Chaves, Iago Ramirez, Grasielle Camargo Gonçalves Alcebíades, Julia Godoi Lopes, Amanda Pelegrin Candemil, Rocharles Cavalcante Fontenele, Fabiane Carneiro Lopes-Olhê, Cassiana Viccari, Patricia Nicolucci, Danieli Moura Brasil, Christiano Oliveira-Santos, Manoel Damião Sousa-Neto, Hugo Gaêta-Araujo

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Abstract

Objectives: This study aimed to assess the impact of imaging protocols involving tube current (mA) adjustment on the equivalent and effective radiation dose for cone-beam computed tomography (CBCT) of mandibular incisors using the corresponding periapical radiography as clinical reference.

Methods: An anthropomorphic head and neck phantom equipped with 24 thermoluminescent dosimeters (TLDs) was used to evaluate radiation exposure across seven imaging protocols: high-dose CBCT (4.0, 7.1, and 10 mA), low-dose CBCT (3.2, 4.5, and 6.3 mA), and standard periapical radiography (7 mA). Equivalent and effective radiation doses were calculated according to tissue-weighting factors outlined in ICRP Publication 103.

Results: Effective dose increased proportionally with tube current, ranging from 53 to 175 µSv in high-dose protocols and from 8.6 to 18 µSv in low-dose protocols. Periapical radiography yielded the lowest effective dose (1.4 µSv). The highest equivalent doses were recorded for the salivary glands and oral mucosa across all protocols.

Conclusions: CBCT protocols with reduced tube current significantly decrease radiation exposure. The lowest setting tested (3.2 mA) resulted in an effective dose comparable to six periapical radiographs. These findings support the implementation of low-dose CBCT for complex endodontic diagnostics, particularly during initial evaluations, in alignment with the ALADAIP principle.

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成像方案和管电流调节对下颚门牙CBCT成像辐射剂量的影响。

目的：本研究旨在以相应的根尖周x线摄影作为临床参考，评估涉及管电流（mA）调节的成像方案对下颌门牙锥形束计算机断层扫描（CBCT）等效和有效辐射剂量的影响。方法：使用配备24个热释光剂量计（TLDs）的拟人头颈假体评估七种成像方案的辐射暴露：高剂量CBCT(4.0, 7.1和10 mA)，低剂量CBCT（3.2, 4.5和6.3 mA）和标准根尖周围放射照相（7 mA）。等效辐射剂量和有效辐射剂量是根据ICRP第103号出版物中概述的组织加权因子计算的。结果：有效剂量随管电流成比例增加，高剂量组为53 ~ 175µSv，低剂量组为8.6 ~ 18µSv。根尖周围x线摄影显示最低有效剂量（1.4µSv）。在所有方案中，唾液腺和口腔黏膜的最高等效剂量被记录下来。结论：减小管电流的CBCT方案可显著降低辐射暴露。测试的最低设置（3.2 mA）产生的有效剂量与六次根尖周围x线片相当。这些发现支持在复杂的牙髓诊断中实施低剂量CBCT，特别是在初始评估期间，符合ALADAIP原则。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical Oral Investigations 医学-牙科与口腔外科

CiteScore

6.30

自引率

5.90%

发文量

484

审稿时长

3 months

期刊介绍： The journal Clinical Oral Investigations is a multidisciplinary, international forum for publication of research from all fields of oral medicine. The journal publishes original scientific articles and invited reviews which provide up-to-date results of basic and clinical studies in oral and maxillofacial science and medicine. The aim is to clarify the relevance of new results to modern practice, for an international readership. Coverage includes maxillofacial and oral surgery, prosthetics and restorative dentistry, operative dentistry, endodontics, periodontology, orthodontics, dental materials science, clinical trials, epidemiology, pedodontics, oral implant, preventive dentistiry, oral pathology, oral basic sciences and more.