Assessment of the Accuracy in Measuring the Enamel Thickness of Maxillary Incisors with Optical Coherence Tomography
Although the clinical assessment of enamel thickness is important, hardly any tools exist for accurate measurements. The purpose of this study was to verify the precision of enamel thickness measurements using swept-source optical coherence tomography (SS-OCT). Human extracted maxillary central and...
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| Format: | Article |
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MDPI AG
2022-07-01
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| Series: | Diagnostics |
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| Online Access: | https://www.mdpi.com/2075-4418/12/7/1634 |
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| author | Hiroshi Miyagi Kyosuke Oki Yoshihiro Tsukiyama Yasunori Ayukawa Kiyoshi Koyano |
| author_facet | Hiroshi Miyagi Kyosuke Oki Yoshihiro Tsukiyama Yasunori Ayukawa Kiyoshi Koyano |
| author_sort | Hiroshi Miyagi |
| collection | DOAJ |
| description | Although the clinical assessment of enamel thickness is important, hardly any tools exist for accurate measurements. The purpose of this study was to verify the precision of enamel thickness measurements using swept-source optical coherence tomography (SS-OCT). Human extracted maxillary central and lateral incisors were used as specimens. Twenty-eight sites were measured in each specimen. The optical path length (OPL) at each measurement site was measured on the OCT images, and enamel thickness (<i>e1</i>) was calculated by dividing OPL by the mean refractive index of enamel, 1.63. The specimens were then sectioned, and a light microscope was used to measure enamel thickness (<i>e2</i>). <i>e1</i> and <i>e2</i> were then compared. Measurement errors between <i>e1</i> and <i>e2</i> for the central and lateral incisors were 0.04 (0.02; 0.06) mm and 0.04 (0.02; 0.07) mm [median value: (25%, 75% percentile)], respectively. No significant differences between measurement sites were noted for measurement errors between <i>e1</i> and <i>e2</i>. These results demonstrate that OCT can be used for noninvasive, accurate measurements of enamel thickness. |
| first_indexed | 2024-03-09T10:20:27Z |
| format | Article |
| id | doaj.art-95516eece5ba4eb4829e84b669c1e2d2 |
| institution | Directory Open Access Journal |
| issn | 2075-4418 |
| language | English |
| last_indexed | 2024-03-09T10:20:27Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diagnostics |
| spelling | doaj.art-95516eece5ba4eb4829e84b669c1e2d22023-12-01T22:03:58ZengMDPI AGDiagnostics2075-44182022-07-01127163410.3390/diagnostics12071634Assessment of the Accuracy in Measuring the Enamel Thickness of Maxillary Incisors with Optical Coherence TomographyHiroshi Miyagi0Kyosuke Oki1Yoshihiro Tsukiyama2Yasunori Ayukawa3Kiyoshi Koyano4Section of Implant and Rehabilitative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, JapanSection of Fixed Prosthodontics, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, JapanSection of Dental Education, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, JapanSection of Implant and Rehabilitative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, JapanDivision of Advanced Dental Devices and Therapeutics, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, JapanAlthough the clinical assessment of enamel thickness is important, hardly any tools exist for accurate measurements. The purpose of this study was to verify the precision of enamel thickness measurements using swept-source optical coherence tomography (SS-OCT). Human extracted maxillary central and lateral incisors were used as specimens. Twenty-eight sites were measured in each specimen. The optical path length (OPL) at each measurement site was measured on the OCT images, and enamel thickness (<i>e1</i>) was calculated by dividing OPL by the mean refractive index of enamel, 1.63. The specimens were then sectioned, and a light microscope was used to measure enamel thickness (<i>e2</i>). <i>e1</i> and <i>e2</i> were then compared. Measurement errors between <i>e1</i> and <i>e2</i> for the central and lateral incisors were 0.04 (0.02; 0.06) mm and 0.04 (0.02; 0.07) mm [median value: (25%, 75% percentile)], respectively. No significant differences between measurement sites were noted for measurement errors between <i>e1</i> and <i>e2</i>. These results demonstrate that OCT can be used for noninvasive, accurate measurements of enamel thickness.https://www.mdpi.com/2075-4418/12/7/1634optical coherence tomographyrefractive indexenamel thickness |
| spellingShingle | Hiroshi Miyagi Kyosuke Oki Yoshihiro Tsukiyama Yasunori Ayukawa Kiyoshi Koyano Assessment of the Accuracy in Measuring the Enamel Thickness of Maxillary Incisors with Optical Coherence Tomography Diagnostics optical coherence tomography refractive index enamel thickness |
| title | Assessment of the Accuracy in Measuring the Enamel Thickness of Maxillary Incisors with Optical Coherence Tomography |
| title_full | Assessment of the Accuracy in Measuring the Enamel Thickness of Maxillary Incisors with Optical Coherence Tomography |
| title_fullStr | Assessment of the Accuracy in Measuring the Enamel Thickness of Maxillary Incisors with Optical Coherence Tomography |
| title_full_unstemmed | Assessment of the Accuracy in Measuring the Enamel Thickness of Maxillary Incisors with Optical Coherence Tomography |
| title_short | Assessment of the Accuracy in Measuring the Enamel Thickness of Maxillary Incisors with Optical Coherence Tomography |
| title_sort | assessment of the accuracy in measuring the enamel thickness of maxillary incisors with optical coherence tomography |
| topic | optical coherence tomography refractive index enamel thickness |
| url | https://www.mdpi.com/2075-4418/12/7/1634 |
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