Preparation of safety standard guidelines for intraoral X-ray units

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K20648
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Social dentistry
• Research Institution: Meikai University
• Principal Investigator: Otaka Yusei 明海大学, 歯学部, 助教 (60711067)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 携帯型口内法エックス線撮影装置 / 迷放射線 / 放射線防護 / 大規模災害 / 歯科的個人識別

Outline of Final Research Achievements

Regarding stray radiation during intraoral radiography, the distribution of air kerma differed depending on the structure of each unit.The dose reached the maximum level in range at an angle of 0±15 degrees ahead of the useful beams, while the dose reached the minimum level in range at an angle of 180±15 degrees backward on the opposite side.
In the event of a large-scale disaster, operators would be taking many radiographs for victim identification in facilities without X-ray rooms. If an operator uses InSight film and takes about 100 radiographs per day. During a period of extensive victim identification work, a control area should be designated appropriately, the operator should control the unit from a vantage point of more than 2 m away from the radiation source, the operator should wear a lead apron (0.25 mm Pb eq.) and a protection board should be fixed. However, these protective measures are not always necessary if intraoral radiography is needed on a transient basis.

Free Research Field

歯科放射線学