Development of a new root canal cleaning method activated by laser irradiation for the complex root canal system

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K18988
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 57030:Conservative dentistry-related
• Research Institution: Tokyo Medical and Dental University
• Principal Investigator: Yao Kanako 東京医科歯科大学, 大学院医歯学総合研究科, 非常勤講師 (60802006)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: LAI

Outline of Final Research Achievements

In recent years, a new root canal cleaning method (Laser Activated Irrigation hereafter LAI) has been devised, and although it is expected to contribute to improving treatment results by a high cleaning effect on details, a study reporting the details has been reported. rare. Not only the cleaning effect but also the risk of overflow to the outside of the apical foramen should be considered, and the purpose is to improve the root canal cleaning effect and improve the treatment results for infected sites that were difficult to clean in the past. , The cleaning effect of LAI in various root canal forms will be analyzed hydrodynamically under the condition of reproducing the complicated structure of the root canal, and the details such as safety, bactericidal property, and new cleaning method will be comprehensively examined.

Free Research Field

歯内療法

Academic Significance and Societal Importance of the Research Achievements

LAIは、根管内に高速の水流、衝撃波を発生させ、キャビテーションが生じることから高い洗浄効果が期待できる。LAIは、SI、PUIに比べ、根管内のデブリの除去効率が同程度、あるいは有意に高いことや、象牙細管内の細菌を減少させることが報告されている。しかしながら、LAIの利点を最大限に活用が期待される複雑な根管形態と洗浄する位置による影響に着目し、LAIの流体力学的流量分布および殺菌能を比較検討した研究は未だない。本研究はより臨床に重点を置き、LAIの効果を検討するものであり、根尖側の清掃が実施不可能な症例、つまり従来法のみでは保存困難になる可能性のある症例の臨床的解決を特に見据えた研究である。