Prevention of vertical root fracture by fibre point application

2017 Fiscal Year Final Research Report

• Project/Area Number: 25870196
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Conservative dentistry; Prosthodontics/ Dental materials science and
• Research Institution: Tokyo Medical and Dental University
• Principal Investigator: HANADA Takahiro 東京医科歯科大学, 歯学部, 非常勤講師 (90549940)
• Project Period (FY): 2013-04-01 – 2018-03-31
• Keywords: 歯内療法 / 垂直性歯根破折 / 波長走査型光干渉断層計 / 抜歯原因疫学調査 / 髄腔開拡 / 咬耗 / WSD

Outline of Final Research Achievements

Swept source optical coherence tomography (SS-OCT) has been introduced recently as no ionizing radiation. SS-OCT images correlated closely with CBCT images, suggesting that SS-OCT can be a useful tool for the detection of crack lines, second mesiobuccal canal (MB2), and pulp horn.
We identify the problems and demands of present dental practice by surveying patients with tooth fracture visiting the endodontic outpatient clinic of a university dental hospital. The survey revealed that there is a great demand for endodontic outpatient clinics and it is necessary to educate general dentists about diagnostics.
A survey of permanent tooth extraction at Kami-Ina area, Nagano prefecture suggested that if there is an attrition or WSD, it is likely to tooth extraction due to tooth fracture, and compensatory loss of tooth is more related to root fracture than bone formation reaction which appears as compensation for occlusal force.

Free Research Field

歯内療法