Assessing surface characteristics of eroded dentine with optical coherence tomography: a preliminary in vitro validation study

Habib Madiha; Lee Kuan Ming; Liew Yih Miin; Zakian Christian; Ngie Min Ung; Chew Hooi Pin

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Assessing surface characteristics of eroded dentine with optical coherence tomography: a preliminary in vitro validation study

机译：用光相干断层扫描评估侵蚀牙本质的表面特征：初步体外验证研究

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We conducted the first pilot study to investigate the use of the attenuation coefficient from an optical coherence tomography (OCT) backscattered signal as a measure of surface roughness changes in eroded dentine at an early stage of the erosion process. Ten human premolar root samples were subjected to citric acid treatment before scanning by OCT. The extracted relative attenuation coefficient (mu(R)) from backscattered OCT signals was shown to increase with the duration of acid challenge. Validated against roughness measurements (rS(a)) from scanning electron microscopy scans, mu(R) is significantly correlated with rS(a) indicative of severity of erosion (p 0.01, r = 0.9195). We conclude that the OCT attenuation coefficient of the immediate subsurface in eroded dentine is a potential surrogate measure for its surface roughness. However, further work should be performed to study how it relates to the surface and immediate subsurface changes effected by other mechanical wear before it could unequivocally be used as a surrogate measurement for surface roughness. (C) 2018 Optical Society of America

机译：我们进行了第一个试点研究，以研究使用衰减系数从光学相干断层扫描（OCT）反向散射信号，因为在侵蚀过程的早期阶段的侵蚀牙本质的表面粗糙度变化的测量值。在扫描10月之前，对十种人掠夺根样品进行柠檬酸处理。从反向散射的OCT信号中提取的相对衰减系数（MU（R））随着酸攻击的持续时间而增加。从扫描电子显微镜扫描的粗糙度测量（RS（A））验证，MU（R）与侵蚀严重程度的RS（A）显着相关（P <0.01，R = 0.9195）。我们得出结论，侵蚀牙本质的近期地下的OCT衰减系数是其表面粗糙度的潜在替代衡量标准。然而，应该进行进一步的工作以研究其涉及其他机械磨损的表面和即时地下变化，并在其明确地用作表面粗糙度的替代测量。（c）2018年光学学会

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来源
《Applied optics》 |2018年第29期|共7页
作者
Habib Madiha; Lee Kuan Ming; Liew Yih Miin; Zakian Christian; Ngie Min Ung; Chew Hooi Pin;
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Univ Malaya Fac Dent Dept Restorat Dent Kuala Lumpur 50603 Malaysia;

Univ Malaya Fac Med Dept Biomed Imaging Kuala Lumpur 50603 Malaysia;

Univ Malaya Fac Engn Dept Biomed Engn Kuala Lumpur 50603 Malaysia;

Kevork Instruments SA CV R&

D Dept San Nicolas De Los Garza 66450 NL Mexico;

Univ Malaya Fac Med Clin Oncol Unit Kuala Lumpur 50603 Malaysia;

Univ Malaya Fac Dent Dept Restorat Dent Kuala Lumpur 50603 Malaysia;

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Assessing surface characteristics of eroded dentine with optical coherence tomography: a preliminary in vitro validation study

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