Size and Morphology of Dust Particles from the Grinding and Polishing of Prosthodontic Materials
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Abstract
Objective: This study is an observational research aimed to investigating the size and shape of the dust particles.
Materials and Methods: The material used is a cobalt chromium metal alloy, heat-cured acrylic for denture bases and self-cured acrylic for temporary crowns, lithium disilicate ceramic and zirconia used for making crowns. Samples of the materials are polished to achieve smoothness, using a set of dental burs of each material. Polishing in transparent box with contained a personal dust collection filter located approximately 30 centimeters away from the grinding point. The grinding arranged in order from the most coarse to the finest dental burs. Each grinding bur performs grinding three times, with each session lasting 3 minutes. The filter paper that has accumulated dust from each grinding process is to be examined under a scanning electron microscope (SEM). The images obtained are processed their size using the ImageJ software. Quantitative elemental analysis equipment was used to determine the quantity and proportion of elements.
Results: The study finds that the majority of dust particles in each sample were within the size range of 1 to 5 micrometers, which is small enough to reach the bronchioles in the lungs. Some of the elements found in certain materials, such as cobalt and chromium from metal dust, are associated with respiratory diseases like pneumoconiosis. Additionally, dust particles from silica are known to cause silicosis. Furthermore, some dust particles had sharp or angular shapes can cause damage to the eyes and tissues in the respiratory system.
Conclusion: The size, shape and composition of the dust particles can cause risks to the respiratory system.
Article Details
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บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการลงตีพิมพ์ในวิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นถือเป็นลิขสิทธิ์เฉพาะของคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือเพื่อกระทำการใด ๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษร จากคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นก่อนเท่านั้น
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