Visualization of droplets and aerosols in simulated dental treatments to clarify the effectiveness of oral suction devices.

IF 3.2 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Journal of prosthodontic research Pub Date : 2024-01-16 Epub Date: 2023-02-23 DOI:10.2186/jpr.JPR_D_23_00013

Jun Watanabe, Yoko Iwamatsu-Kobayashi, Kenji Kikuchi, Tomonari Kajita, Hiromitsu Morishima, Kensuke Yamauchi, Wataru Yashiro, Hidekazu Nishimura, Hiroyasu Kanetaka, Hiroshi Egusa

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Abstract

Purpose: The hazards of aerosols generated during dental treatments are poorly understood. This study aimed to establish visualization methods, discover conditions for droplets/aerosols generated in simulating dental treatments and identify the conditions for effective suction methods.

Methods: The spreading area was evaluated via image analysis of the droplets/aerosols generated by a dental air turbine on a mannequin using a light emitting diode (LED) light source and high-speed camera. The effects of different bur types and treatment sites, reduction effect of intra-oral suction (IOS) and extra-oral suction (EOS) devices, and effect of EOS installation conditions were evaluated.

Results: Regarding the bur types, a bud-shaped bur on the air turbine generated the most droplets/aerosols compared with round-shaped, round end-tapered, or needle-tapered burs. Regarding the treatment site, the area of droplets/aerosols produced by an air turbine from the palatal plane of the anterior maxillary teeth was significantly higher. The generated droplet/aerosol area was reduced by 92.1% by using IOS alone and 97.8% by combining IOS and EOS. EOS most effectively aspirated droplets/aerosols when placed close (10 cm) to the mouth in the vertical direction (0°).

Conclusions: The droplets/aerosols generated by an air turbine could be visualized using an LED light and a high-speed camera in simulating dental treatments. The bur shape and position of the dental air turbine considerably influenced droplet/aerosol diffusion. The combined use of IOS and EOS at a proper position (close and perpendicular to the mouth) facilitated effective diffusion prevention to protect the dental-care environment.

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对模拟牙科治疗中的液滴和气溶胶进行可视化，以明确口腔抽吸装置的有效性。

目的：人们对牙科治疗过程中产生的气溶胶的危害知之甚少。本研究旨在建立可视化方法，发现在模拟牙科治疗中产生液滴/气溶胶的条件，并确定有效抽吸方法的条件：方法：使用发光二极管（LED）光源和高速摄像机对牙科空气涡轮机在人体模型上产生的液滴/气溶胶进行图像分析，评估扩散面积。评估了不同牙钻类型和治疗部位的效果、口内吸引（IOS）和口外吸引（EOS）装置的减少效果以及 EOS 安装条件的影响：在车针类型方面，与圆形车针、圆形端锥车针或针锥车针相比，空气涡轮上的芽状车针产生的液滴/气溶胶最多。在治疗部位方面，空气涡轮从上颌前牙腭面产生的液滴/气溶胶面积明显更高。单独使用 IOS 产生的液滴/气溶胶面积减少了 92.1%，结合使用 IOS 和 EOS 产生的液滴/气溶胶面积减少了 97.8%。当在垂直方向（0°）靠近口腔（10 厘米）放置时，EOS 能最有效地吸入液滴/气溶胶：结论：在模拟牙科治疗时，可使用 LED 灯和高速摄像机观察空气涡轮产生的液滴/气溶胶。牙科空气涡轮的毛刺形状和位置对液滴/气溶胶的扩散有很大影响。在适当的位置（靠近并垂直于口腔）结合使用 IOS 和 EOS 可有效防止扩散，从而保护牙科护理环境。

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

Journal of prosthodontic research DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

6.90

自引率

11.10%

发文量

161

期刊介绍： Journal of Prosthodontic Research is published 4 times annually, in January, April, July, and October, under supervision by the Editorial Board of Japan Prosthodontic Society, which selects all materials submitted for publication. Journal of Prosthodontic Research originated as an official journal of Japan Prosthodontic Society. It has recently developed a long-range plan to become the most prestigious Asian journal of dental research regarding all aspects of oral and occlusal rehabilitation, fixed/removable prosthodontics, oral implantology and applied oral biology and physiology. The Journal will cover all diagnostic and clinical management aspects necessary to reestablish subjective and objective harmonious oral aesthetics and function. The most-targeted topics: 1) Clinical Epidemiology and Prosthodontics 2) Fixed/Removable Prosthodontics 3) Oral Implantology 4) Prosthodontics-Related Biosciences (Regenerative Medicine, Bone Biology, Mechanobiology, Microbiology/Immunology) 5) Oral Physiology and Biomechanics (Masticating and Swallowing Function, Parafunction, e.g., bruxism) 6) Orofacial Pain and Temporomandibular Disorders (TMDs) 7) Adhesive Dentistry / Dental Materials / Aesthetic Dentistry 8) Maxillofacial Prosthodontics and Dysphagia Rehabilitation 9) Digital Dentistry Prosthodontic treatment may become necessary as a result of developmental or acquired disturbances in the orofacial region, of orofacial trauma, or of a variety of dental and oral diseases and orofacial pain conditions. Reviews, Original articles, technical procedure and case reports can be submitted. Letters to the Editor commenting on papers or any aspect of Journal of Prosthodontic Research are welcomed.