Tokushima University / Educator and Researcher Directory --- Oku, Yuri

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Tokushima University ⟩ University Hospital ⟩ 先端歯科医療開発研究プロジェクト ⟩
Tokushima University ⟩ University Hospital ⟩ Clinical Division ⟩ Department of General Dentistry ⟩ Oral and Maxillofacial Radiology ⟩
Tokushima University ⟩ Faculty of Dentistry ⟩ Course in Dentistry ⟩ Clinical Dentistry for Oral Health and Surgery ⟩ Oral and Maxillofacial Radiology ⟩

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Research

Personal Web Page

https://researchmap.jp/oku.yuuri (researchmap)

https://orcid.org/0009-0003-4381-9403 (ORCID)

Field of Study

○	Life sciences [Community dentistry]
○	Life sciences [Prosthodontics]

Subject of Study

Book / Paper

(See https://researchmap.jp/oku.yuuri (researchmap) for Published Book / Papers / Presentations.)

Academic Paper (Judged Full Paper):

1.	Hideki Suito, Yuri Oku, Tomoyuki Kondo, Kumiko Kamada, Naito Kurio and Naoki Maeda : Precautions when extracting impacted third molars with impacted enamel pearls in the maxillary sinus floor: A case report, Clinical Case Reports, 26, 14(9):e73400, 2026. (Summary) Cone-beam computed tomography (CBCT) is routinely used before mandibular wisdom tooth extraction to determine its three-dimensional relationship with the mandibular canal. In contrast, the extraction of a maxillary third molar is often planned based on panoramic radiographs alone. Enamel pearls are common at the maxillary molar sites, with prevalence varying by ethnicity; however, their detection based on panoramic radiographs alone is challenging. We herein present the novel case of a 27-year-old woman whose maxillary sinus floor was being elevated and partially perforated by enamel pearls, thereby increasing the risk of sinus perforation area spread, enamel pearl fracture, and displacement into the sinus cavity during extraction as well as postoperative complications. This case illustrates the clinical implications for the surgical management of impacted maxillary third molars located close to the maxillary sinus floor and also emphasizes the value of CBCT imaging for accurate preoperative assessment and surgical planning in such cases. (Link to Publication Site) ● Publication site (DOI): 10.1002/ccr3.73400 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 42657262 ● Search Scopus @ Elsevier (PMID): 42657262 ● Search Scopus @ Elsevier (DOI): 10.1002/ccr3.73400 (DOI: 10.1002/ccr3.73400, PubMed: 42657262)
2.	Hideki Suito, Yuri Oku, Kohichi Kani, Keiko Aota and Naoki Maeda : A Rare Case of Anterior Stafne Bone Cavity in the Mandibular Region, Curēus, 17, 11, e97395, 2025. (Summary) Stafne bone cavity (SBC) is a rare, asymptomatic mandibular bone defect that is usually detected incidentally on imaging. While the posterior variant is relatively common and typically occurs near the mandibular angle, the anterior form involving the incisor-premolar region is extremely rare and may mimic odontogenic or non-odontogenic cysts. An 81-year-old female was referred for evaluation of a swelling in the right maxilla. Panoramic radiography incidentally revealed a well-defined radiolucency in the left anterior-premolar mandibular region. Multi-detector CT demonstrated a lingual alveolar bone concavity measuring 20.9 × 8.7 × 11.2 mm with buccal cortical thinning, which was classified as Type according to Ariji's criteria. Surgical exploration confirmed a lingual cortical depression without cystic or tumorous tissue, consistent with anterior SBC. No biopsy was performed, and the patient was managed conservatively with periodic follow-up. This case highlights the importance of considering anterior SBC in the differential diagnosis of radiolucent mandibular lesions and emphasizes the role of advanced imaging in establishing an accurate diagnosis and avoiding unnecessary invasive treatment. (Keyword) lingual mandibular bone defect / mandibular anterior region / multi-detector computed tomography; / stafne bone cavity / static bone cavity (Link to Publication Site) ● Publication site (DOI): 10.7759/cureus.97395 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 41431534 ● Search Scopus @ Elsevier (PMID): 41431534 ● Search Scopus @ Elsevier (DOI): 10.7759/cureus.97395 (DOI: 10.7759/cureus.97395, PubMed: 41431534)
3.	Yuri Oku, Hideki Suito, Keiko Fujimoto, Tetsuo Ichikawa and Kan Nagao : Relationship between vertical hyoid bone position and swallowing function in older adults., Journal of Oral Science, 67, 2, 91-95, 2025. (Summary) JOF may affect swallowing function in older males with lowered hyoid bone position. (Tokushima University Institutional Repository) ● Metadata: 2013232 (Link to Publication Site) ● Publication site (DOI): 10.2334/josnusd.24-0409 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 40074361 ● Search Scopus @ Elsevier (PMID): 40074361 ● Search Scopus @ Elsevier (DOI): 10.2334/josnusd.24-0409 (Tokushima University Institutional Repository: 2013232, DOI: 10.2334/josnusd.24-0409, PubMed: 40074361)
4.	Hideki Suito, Hozumi Yoshihara, Naoki Maeda, Ryosuke Kasai, Tadashi Inoue, Masafumi Amano, Yuri Oku, Keiko Fujimoto and Kan Nagao : Evaluation of the effect of reducing metal artifacts in multi-detector CT imaging of zirconia and titanium implants, Oral Radiology, 41, 3, 421-429, 2025. (Summary) Zirconia oral implants produce larger artifacts on computed tomography (CT) compared to titanium oral implants. This study aimed to compare the effectiveness of metal artifact reduction (MAR) software and dual-energy (DE) methods, which are used in multi-detector CT (MDCT) to reduce the artifacts produced by titanium and zirconia oral implants. Oral implants were placed in the lower right second premolar and second molar regions of an acrylic mandible model and evaluated using MDCT. For MAR, Single Energy Metal Artifact Reaction (SEMAR) images were obtained, and for DE, images were obtained at 135 keV. The evaluation was based on 21 regions of interest (ROIs) with sides of 2.8 mm, set at 15, 25, and 35 mm from the center (the lower-right first premolar), with 65°, 90°, 115°, and 145° angles set on the buccal and lingual sides. The evaluation was based on an Artifact Index (AI). The lingual aspect of the AI tended to be larger compared to the buccal aspect, regardless of the image-processing method. In addition, the SEMAR method tended to have a greater artifact reduction effect than the DE method. The distortion of the mandibular model and occurrence of new artifacts were confirmed using SEMAR. SEMAR had higher artifact reduction effects on metal artifacts than the DE method. Although SEMAR and dual-energy methods can effectively reduce metal artifacts, they also cause false images and areas that cannot be observed. Therefore, diagnostic and treatment planning, including imaging, is essential before artifact reduction processing. (Keyword) Computed tomography / Dual-energy / Metal artifact reduction / Titanium implant / Zirconia implant (Link to Publication Site) ● Publication site (DOI): 10.1007/s11282-025-00814-5 (Link to Search Site for Scientific Articles) ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 40038165 ● Summary page in Scopus @ Elsevier: 2-s2.0-86000292564 (DOI: 10.1007/s11282-025-00814-5, PubMed: 40038165, Elsevier: Scopus)

Proceeding of International Conference:

1.	Hideki Suito, Yuri Oku, Tomoyuki Kondo, Naoki Maeda, Ryosuke Kasai, Keiko Fujimoto and Kan Nagao : Quantitative Effect of Metal Artifact Reduction During CT Imaging, The 15th Asian Congress of Oral and Maxillo-Facial Radiology, Apr. 2026.
2.	Yuri Oku, Hideki Suito, Yoshihiro Tagami, Keiko Fujimoto, Tomoyuki Kondo, Naoki Maeda and Kan Nagao : Inter-observer reliability in the assessment of geniohyoid muscle using the ultrasound image: A comparative study by age group, The 15th Asian Congress of Oral and Maxillo-Facial Radiology, Apr. 2026.

Proceeding of Domestic Conference:

1.	Tomoyuki Kondo, Yuri Oku, Hideki Suito, Naoki Maeda and Takaaki Tsunematsu : 口腔がんにおけるX線照射により誘導される細胞死とeccDNA産生の動態解明, Dental Radiology, May 2026.
2.	Yuri Oku, Hideki Suito, Yoshihiro Tagami, Keiko Fujimoto, Tomoyuki Kondo and Naoki Maeda : オトガイ舌骨筋の超音波画像解析における検者内類性の検討:年齢群による比較, Dental Radiology, May 2026.
3.	Hideki Suito, Yuri Oku, Keiko Aota, Fumihiko Tsushima, Kumiko Kamada and Naito Kurio : パノラマX線画像による下顎管の明瞭度と骨質・顎下腺窩の関係, Journal of The Japanese Stomatological Society, Apr. 2026.
4.	Kan Nagao, Yuri Oku, Keiko Fujimoto, Hideki Suito, 田上義弘, Megumi Watanabe, Takaharu Goto, Yuki Iwawaki, Takashi Matsuda and Takahiro Kishimoto : 栄養指導と口腔リハビリテーションが口腔機能，食品多様性，栄養状態に及ぼす影響, 日本老年歯科医学会第36回学術大会, Jun. 2025.
5.	Yuri Oku, Hideki Suito, Keiko Fujimoto, 市場裕康, 萬好哲也 and Kan Nagao : 壮年期から高齢期における嚥下機能と舌骨上筋群，舌骨の位置に関する検討, 日本補綴歯科学会第 134 回学術大会, May 2025.
6.	Hideki Suito, Keiko Fujimoto, Yuri Oku and Kan Nagao : 歯科技工粉じん吸入装置の新たなシステム構築の提案, Annals of Japan Prosthodontic Society, 17, 333, May 2025. (Keyword) 換気(環境) 空調塵埃噴霧器と気化器歯科補綴物設計空気浄化ヒト歯学
7.	Hideki Suito, Hozumi Yoshihara, Naoki Maeda, Naito Kurio, Keiko Aota, Yuri Oku, Keiko Fujimoto and Kan Nagao : CBCTを用いた下顎埋伏智歯症例の臼後管・臼後枝の出現率, 日本歯科放射線学会第5回秋季学術大会, Oct. 2024.
8.	田上義弘, Keiko Fujimoto, Hideki Suito, Takahiro Kishimoto, Yuki Iwawaki, Takaharu Goto, Megumi Watanabe, Yuri Oku, Kan Nagao and Tetsuo Ichikawa : フレイルに関連する口腔機能評価における音声解析の有用性, 令和6年度公益社団法人日本補綴歯科学会中国・四国支部学術大会, Sep. 2024.
9.	Yuri Oku, Hideki Suito, Keiko Fujimoto, Kan Nagao and Tetsuo Ichikawa : 歯科診療に起因する歯科医師の職業性・騒音性難聴を予防する, 公益社団法人日本補綴歯科学会第133回学術大会, Jul. 2024.
10.	Keiko Fujimoto, Yuri Oku, Hideki Suito, Kan Nagao and Tetsuo Ichikawa : 咀嚼能力における主観的評価と客観的評価の相違を食行動とフレイルから検討する, 一般社団法人日本老年歯科医学会第35回学術大会, Jun. 2024.
11.	Yuki Iwawaki, 園井厚憲, 千葉厚子, 半田拓弥, 中津晋, Takaharu Goto, Yuri Oku, Keiko Fujimoto, Takahiro Kishimoto, Hideki Suito and Tetsuo Ichikawa : 泡沫状義歯洗浄剤OC441による義歯洗浄効果-主観的・客観的評価法による有効性の検討-, 日本義歯ケア学会第16回学術大会, Jan. 2024.
12.	Yuri Oku, Keiko Fujimoto, Hideki Suito and Kan Nagao : 超音波診断装置を用いた舌骨上筋群と口腔機能・嚥下機能との関連, 日本摂食嚥下リハビリテーション学会第29回学術大会, Sep. 2023.

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)

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