000002202 001__ 2202
000002202 005__ 20260601122104.0
000002202 0247_ $$2DOI$$a10.6083/M49G5K28
000002202 037__ $$aETD
000002202 245__ $$aAnalysis of aerodynamically respirable dust generated from quartz containing orthodontic and dental composites utilizing air rotary abrasion
000002202 260__ $$bOregon Health and Science University
000002202 269__ $$a2006
000002202 336__ $$aThesis
000002202 502__ $$bM.S.
000002202 502__ $$gOrthodontics
000002202 520__ $$aQuartz-containing dental composites can generate respirable dust during orthodontic adhesive removal, posing potential health risks. This study evaluated particle size distribution, quartz content, and the effectiveness of dental masks during air-rotary abrasion. About 5% of generated dust fell within the respirable range (0.5–5 µm), containing significant quartz levels and producing billions of particles. While dental masks removed over 99% of total dust mass, they were ineffective at filtering smaller particles most likely to reach deep lung regions. These findings suggest a potential exposure risk and highlight the need for improved protective measures in clinical practice.
000002202 540__ $$fCC BY
000002202 542__ $$fIn copyright - single owner
000002202 650__ $$aDental High-Speed Technique$$017508
000002202 650__ $$aComposite Resins$$016979
000002202 650__ $$aDental Debonding$$029609
000002202 650__ $$aQuartz$$025035
000002202 650__ $$aSilicosis$$026008
000002202 650__ $$aDental Cements$$017491
000002202 691__ $$aSchool of Dentistry$$041368
000002202 692__ $$aDepartment of Orthodontics$$041435
000002202 7001_ $$aAlmeida, Matthew$$uOregon Health and Science University$$041354
000002202 8564_ $$93c9cf326-b7a0-4423-8bd0-85bb2877b6a7$$s4795457$$uhttps://digitalcollections.ohsu.edu/record/2202/files/2931_etd.pdf$$ePublic$$2e78023831ee41c7a52baf9869c91ed2b$$31
000002202 901__ $$a<p>These documents are archival records. They are retained for historical reference only. </p><p><b>Need an accessible version? Use the ‘Get Accessible Copy’ link above.</b></p>
000002202 905__ $$a/rest/prod/5t/34/sj/70/5t34sj70n
000002202 909CO $$ooai:digitalcollections.ohsu.edu:2202$$pstudent-work
000002202 956__ $$aGet Accessible Copy$$uhttps://ohsu.libwizard.com/f/requestaccessibledocument
000002202 980__ $$aTheses and Dissertations