<i>In vitro</i> and clinical evaluation of optical coherence tomography for the detection of subgingival calculus and root cementum
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- Tsubokawa Masaki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- Aoki Akira
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- Kakizaki Sho
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- Taniguchi Yoichi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- Ejiri Kenichiro
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- Mizutani Koji
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- Koshy Geena
- Department of Periodontics, Sri Sankara Dental College
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- Akizuki Tatsuya
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- Oda Shigeru
- Oral Diagnosis and General Dentistry, University Hospital of Dentistry, Tokyo Medical and Dental University
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- Sumi Yasunori
- Center of Advanced Medicine for Dental and Oral Diseases, National Center for Geriatrics and Gerontology
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- Izumi Yuichi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Abstract
<p>This study evaluated the effectiveness of swept-source optical coherence tomography (ss-OCT) for detecting calculus and root cementum during periodontal therapy. Optical coherence tomography (OCT) images were taken before and after removal of subgingival calculus from extracted teeth and compared with non-decalcified histological sections. Porcine gingival sheets of various thicknesses were applied to the root surfaces of extracted teeth with calculus and OCT images were taken. OCT images were also taken before and after scaling and root planing (SRP) in human patients. In vitro, calculus was clearly detected as a white-gray amorphous structure on the root surface, which disappeared after removal. Cementum was identified as a thin, dark-gray layer. The calculus could not be clearly observed when soft tissues were present on the root surface. Clinically, supragingival calculus and cementum could be detected clearly with OCT, and subgingival calculus in the buccal cervical area of the anterior and premolar teeth was identified, which disappeared after SRP. Digital processing of the original OCT images was useful for clarifying the calculus. In conclusion, ss-OCT showed potential as a periodontal diagnostic tool for detecting cementum and subgingival calculus, although the practical applications of subgingival imaging remain limited.</p>
Journal
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- Journal of Oral Science
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Journal of Oral Science 60 (3), 418-427, 2018
Nihon University School of Dentistry