Application of optical coherence tomography in restorative dentistry

光学相干断层扫描在牙科修复中的应用

• 批准号: 23390432
• 负责人: TAGAMI Junji
• 金额: $ 12.31万
• 依托单位: Tokyo Medical and Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23390432/
• 关键词: 歯学; 光干渉断層計; 歯冠修復; う蝕; 亀裂; コンポジットレジン修復; 窩壁適合性; 非う蝕性歯頸部欠損; OCT; 齲蝕; コンポジットレジン; 適合性; 摩耗

Swept-source optical coherence tomography (SS-OCT) can construct cross-sectional images of biological structures. The purpose of this study was to evaluate the possibility to introduce SS-OCT in restorative dentistry.In operative dentistry, SS-OCT was examined to evaluate the diagnostic accuracy for the detection of caries and tooth crack. Refractive indices of enamel and dentin and attenuation coefficient were measured using SS-OCT. We also establish a method for non-destructive detection of gap and secondary caries beneath composite restorations. In endodontics, SS-OCT was used for the detection of root fracture, imaging the pulp chamber, and detection of second mesiobuccal canal of maxillary molars. In the field of fixed prosthodontics, influence of dentin alteration due to aging on OCT imaging was evaluated. In composite restorations, wear is one critical problem in clinic. Subsurface cracks underneath wear traces were observed.

扫描源光学相干层析成像（SS-OCT）可以构建生物结构的横切面图像。本研究的目的是评估SS-OCT在牙科修复中应用的可能性。在牙科手术中，检查SS-OCT以评估诊断龋齿和牙齿裂纹的准确性。用SS-OCT测定牙本质和牙釉质的折光率和衰减系数。我们还建立了一种无损检测复合修复体间隙和继发龋的方法。在牙髓学中，采用SS-OCT检测上颌磨牙牙根断裂、牙髓室成像、第二中颊管检测。在固定修复领域，评估了老化引起的牙本质改变对OCT成像的影响。在复合修复体中，磨损是临床上的一个关键问题。在磨损痕迹下观察到地下裂纹。

项目成果

光干渉断層計(OCT)を利用した非破壊断層画像診断

使用光学相干断层扫描 (OCT) 进行无损断层成像诊断

• 发表时间: 2011
• 期刊: 日本歯科理工学会雑誌
• 作者: 島田康史;有吉芽生;今井加奈子;マキシパトリシア;吉岡俊彦;田上順次;角保徳
• 通讯作者: 角保徳

Effects of structural orientation of enamel and dentin on light attenuation and local refractive index : an optical coherence tomography study

牙釉质和牙本质的结构取向对光衰减和局部折射率的影响：光学相干断层扫描研究

• 发表时间: 2012
• 期刊: J Dent
• 影响因子: 4.4
• 作者: Hariri I;Sadr A;Shimada Y;Tagami J;Sumi Y
• 通讯作者: Sumi Y

Non-destructive characterization of voids in six flowable composites using swept-source optical coherence tomography

• DOI: 10.1016/j.dental.2012.11.004
• 发表时间: 2013-03-01
• 期刊: DENTAL MATERIALS
• 影响因子: 5
• 作者: Nazari, Amir;Sadr, Alireza;Sumi, Yasunori
• 通讯作者: Sumi, Yasunori

歯根破折歯の非破壊的観察-マイクロフォーカスCTとSS-OCT

牙根折断牙的无损观察——微焦点CT和SS-OCT

• 发表时间: 2011
• 作者: 吉岡俊彦;石村瞳;海老原新;須田英明
• 通讯作者: 須田英明

Concurrent evaluation of composite internal adaptation and bond strength in a class-I cavity

• DOI: 10.1016/j.jdent.2012.10.003
• 发表时间: 2013-01-01
• 期刊: JOURNAL OF DENTISTRY
• 影响因子: 4.4
• 作者: Bakhsh, Turki A.;Sadr, Alireza;Sumi, Yasunori
• 通讯作者: Sumi, Yasunori