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Yamada SI, Hasegawa T, Yoshimura N, Hakoyama Y, Nitta T, Hirahara N, Miyamoto H, Yoshimura H, Ueda N, Yamamura Y, Okuyama H, Takizawa A, Nakanishi Y, Iwata E, Akita D, Itoh R, Kubo K, Kondo S, Hata H, Koyama Y, Miyamoto Y, Nakahara H, Akashi M, Kirita T, Shibuya Y, Umeda M, Kurita H. Prevalence of and risk factors for postoperative complications after lower third molar extraction: A multicenter prospective observational study in Japan. Medicine (Baltimore) 2022; 101:e29989. [PMID: 35960058 PMCID: PMC9371489 DOI: 10.1097/md.0000000000029989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Lower third molar extraction is the most common surgical treatment among routine dental and oral surgical procedures. while the surgical procedures for lower third molar extraction are well established, the difficulty of tooth extraction and the frequency of postoperative complications differ depending on the patient's background. To establish a management protocol for the lower third molars, the prevalence of and risk factors for postoperative complications after lower third molar extraction were investigated in a large number of Japanese patients in a multicenter prospective study. During 6 consecutive months in 2020, 1826 lower third molar extractions were performed at the 20 participating institutions. The medical records of the patients were reviewed, and relevant data were extracted. The prevalence of and risk factors for postoperative complications were analyzed. The prevalence of postoperative complications after lower third molar extraction was 10.0%. Multivariate analysis indicated that age (≤32 vs >32, odds ratio [OR]: 1.428, 95% confidence interval [95% CI]: 1.040-1.962, P < .05), the radiographic anatomical relationship between the tooth roots and mandibular canal (overlapping of the roots and canal vs no close anatomical relationship between the roots and the superior border of the canal, OR: 2.078, 95% CI: 1.333-3.238, P < .01; overlapping of the roots and canal vs roots impinging on the superior border of the canal, OR: 1.599, 95% CI: 1.050-2.435, P < .05), and impaction depth according to the Pell and Gregory classification (position C vs position A, OR: 3.7622, 95% CI: 2.079-6.310, P < .001; position C vs position B, OR: 2.574, 95% CI: 1.574-4.210, P < .001) are significant independent risk factors for postoperative complications after lower third molar extraction. These results suggested that higher age and a deeply impacted tooth might be significant independent risk factors for postoperative complications after lower third molar extraction.
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Affiliation(s)
- Shin-ichi Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- * Correspondence: Shin-ichi Yamada, DDS, PhD, Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto, 390-8621, Japan (e-mail: )
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Nobuhiko Yoshimura
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Oral Disease Center, Aizawa Hospital, Matsumoto, Japan
| | - Yusuke Hakoyama
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Oral Disease Center, Aizawa Hospital, Matsumoto, Japan
| | - Tetsuya Nitta
- Department of Dentistry and Oral Surgery, Kagoshima City Hospital, Kagoshima, Japan
| | - Narihiro Hirahara
- Department of Dentistry and Oral Surgery, Kagoshima City Hospital, Kagoshima, Japan
| | - Hironori Miyamoto
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hitoshi Yoshimura
- Department of Dentistry and Oral Surgery, Unit of Sensory and Locomotor Medicine, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Nobuhiro Ueda
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - Yoshiko Yamamura
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hideki Okuyama
- Department of Dentistry and Oral Surgery, Asama General Hospital, Saku, Japan
| | - Atsushi Takizawa
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Dentistry and Oral Surgery, Hokushin General Hospital, Nakano, Japan
| | - Yoshitaka Nakanishi
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Oral Surgery, Asama Nanroku Komoro Medical Center, Komoro, Japan
| | - Eiji Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
- Department of Oral and Maxillofacial Surgery, Kakogawa Central City Hospital, Kakogawa, Japan
| | - Daisuke Akita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Dentistry and Oral Surgery, Okaya City Hospital, Okaya, Japan
| | - Ryuichi Itoh
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Dentistry and Oral Surgery, Suwa Central Hospital, Chino, Japan
| | - Kiriko Kubo
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Dentistry and Oral Surgery, Iida Municipal Hospital, Iida, Japan
| | - Seiji Kondo
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Hironobu Hata
- Department of Dentistry and Oral Surgery, Hokkaido Cancer Center, National Hospital Organization, Sapporo, Japan
| | - Yoshito Koyama
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Dentistry and Oral Surgery, Omachi General Hospital, Omachi, Japan
| | - Youji Miyamoto
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hirokazu Nakahara
- Department of Dentistry and Oral Surgery, Osaka Metropolitan University Graduate School of Medicine, Osaka City, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tadaaki Kirita
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - Yasuyuki Shibuya
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Unit of Translational Medicine, Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hiroshi Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Yamada SI, Kurita H, Nakano R, Ohta R, Akita D, Hashidume M, Morishita K, Kondo E, Sakai H. Treatment strategies for and outcomes of older patients with oral squamous cell carcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 129:322-329. [PMID: 32102767 DOI: 10.1016/j.oooo.2019.10.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/17/2019] [Accepted: 10/09/2019] [Indexed: 01/09/2023]
Abstract
OBJECTIVE The purpose of this study was to investigate factors that have a significant impact on decision making regarding treatment strategies and on the resultant outcomes in older patients with oral squamous cell carcinoma (OSCC). STUDY DESIGN To define fit, vulnerable, and frail patients, as well as treatment strategies/outcomes, in patients 75 years of age and older with primary OSCC were retrospectively reviewed from the medical records. RESULTS Among patients with stage I and II tumors, those with a Geriatric 8 (G8) score of 11.5 or greater had favorable outcomes and those with a score less than 11.5 had acceptable outcomes (5-year self-reliance [SR] rates: 80.8 and 53.5%, respectively). Among patients with stage III and IV tumors, those with the Eastern Cooperative Oncology Group-Performance status (ECOG-PS) score less than 2 and/or a G8 score 11.5 or greater mainly received standard therapy, had favorable outcomes (5-year SR rate: 66.7%). The 5-year SR rates of stage IV patients with an ECOG-PS score 2 or greater and those with a G8 score less than 11.5 were poor regardless of any treatment strategy. Although the 5-year SR rate of patients with standard therapy was 73.4%, that of patients receiving other curative therapies was 0%. CONCLUSIONS In patients with stage III/IV, ECOG-PS 2 or greater, and/or G8 score less than 11.5, treatment was difficult, and the prognosis was poor.
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Affiliation(s)
- Shin-Ichi Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hiroshi Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan.
| | - Ryoko Nakano
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Ryosuke Ohta
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Daisuke Akita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Masao Hashidume
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kota Morishita
- Department of Clinical Oral Oncology, Unit of Translational Medicine, Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Eiji Kondo
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hironori Sakai
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Tateno A, Asano M, Akita D, Toriumi T, Tsurumachi-Iwasaki N, Kazama T, Arai Y, Matsumoto T, Kano K, Honda M. Transplantation of dedifferentiated fat cells combined with a biodegradable type I collagen-recombinant peptide scaffold for critical-size bone defects in rats. J Oral Sci 2019; 61:534-538. [PMID: 31631097 DOI: 10.2334/josnusd.18-0458] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Tissue engineering is a promising approach to supplement existing treatment strategies for craniofacial bone regeneration. In this study, a type I collagen scaffold made from a recombinant peptide (RCP) with an Arg-Gly-Asp motif was developed, and its effect on regeneration in critical-size mandibular bone defects was evaluated. Additionally, the combined effect of the scaffold and lipid-free dedifferentiated fat (DFAT) cells was assessed. Briefly, DFAT cells were separated from mature adipocytes by using a ceiling culture technique based on buoyancy. A 3 cm × 4 cm critical-size bone defect was created in the rat mandible, and regeneration was evaluated by using RCP with DFAT cells. Then, cultured DFAT cells and adipose-derived stem cells (ASCs) were seeded onto RCP scaffolds (DFAT/RCP and ASC/RCP) and implanted into the bone defects. Micro-computed tomography imaging at 8 weeks after implantation showed significantly greater bone regeneration in the DFAT/RCP group than in the ASC/RCP and RCP-alone groups. Similarly, histological analysis showed significantly greater bone width in the DFAT/RCP group than in the ASC/RCP and RCP-alone groups. These findings suggest that DFAT/RCP is effective for bone formation in critical-size bone defects and that DFAT cells are a promising source for bone regeneration.
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Affiliation(s)
- Atsushi Tateno
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Masatake Asano
- Department of Pathology, Nihon University School of Dentistry.,Division of Immunology and Pathobiology, Dental Research Center, Nihon University School of Dentistry
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry
| | - Taku Toriumi
- Department of Oral Anatomy, Aichi Gakuin University School of Dentistry
| | | | - Tomohiko Kazama
- Department of Functional Morphology, Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
| | - Yoshinori Arai
- Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry
| | - Taro Matsumoto
- Department of Functional Morphology, Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University
| | - Masaki Honda
- Department of Oral Anatomy, Aichi Gakuin University School of Dentistry
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Okubo T, Tsukimura N, Taniyama T, Ishijima M, Nakhaei K, Rezaei NM, Hirota M, Park W, Akita D, Tateno A, Ishigami T, Ogawa T. Ultraviolet treatment restores bioactivity of titanium mesh plate degraded by contact with medical gloves. J Oral Sci 2019; 60:567-573. [PMID: 30587689 DOI: 10.2334/josnusd.17-0443] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Titanium mesh plate (Ti mesh) used for bone augmentation inadvertently comes into contact with medical gloves during trimming and bending. We tested the hypotheses that glove contact degrades the biological capability of Ti mesh and that ultraviolet treatment (UV) can restore this capability. Three groups of Ti mesh specimens were prepared: as-received (AR), after glove contact (GC), and after glove contact followed by UV treatment. The AR and GC meshes were hydrophobic, but GC mesh was more hydrophobic. AR and GC meshes had significant amounts of surface carbon, and Si content was higher for GC mesh than for AR mesh. UV mesh was hydrophilic, and carbon and silicon content values were significantly lower in this group than in the AR and GC groups. The number, alkaline phosphatase activity, and mineralization ability of attached osteoblasts were significantly lower in the GC group than in the AR group and markedly higher in the UV group than in the AR group. In conclusion, glove contact caused chemical contamination of Ti mesh, which significantly reduced its bioactivity. UV treatment restored bioactivity in contaminated Ti mesh, which outperformed even the baseline Ti mesh.
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Affiliation(s)
- Takahisa Okubo
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Naoki Tsukimura
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry
| | - Takashi Taniyama
- Division of Advanced Prosthodontics, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry
| | - Manabu Ishijima
- Division of Advanced Prosthodontics, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry
| | - Kourosh Nakhaei
- Division of Advanced Prosthodontics, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry
| | - Naser M Rezaei
- Division of Advanced Prosthodontics, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry
| | - Makoto Hirota
- Division of Advanced Prosthodontics, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry
| | - Wonhee Park
- Division of Advanced Prosthodontics, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry
| | - Atsushi Tateno
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Tomohiko Ishigami
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry
| | - Takahiro Ogawa
- Division of Advanced Prosthodontics, Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry
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5
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Mashimo T, Sato Y, Akita D, Toriumi T, Namaki S, Matsuzaki Y, Yonehara Y, Honda M. Bone marrow-derived mesenchymal stem cells enhance bone marrow regeneration in dental extraction sockets. J Oral Sci 2019; 61:284-293. [DOI: 10.2334/josnusd.18-0143] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Takayuki Mashimo
- Department of Oral and Maxillofacial Surgery, Juntendo University Faculty of Medicine
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry
| | - Yukio Sato
- Department of Emergency and Critical Care Medicine, Keio University School of Medicine
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry
| | - Taku Toriumi
- Department of Oral Anatomy, Aichi-Gakuin University School of Dentistry
| | - Shunsuke Namaki
- Department of Clinical Medicine, Nihon University School of Dentistry
| | - Yumi Matsuzaki
- Department of Life Science, Shimane University Faculty of Medicine
| | | | - Masaki Honda
- Department of Oral Anatomy, Aichi-Gakuin University School of Dentistry
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Tsurumachi N, Akita D, Kano K, Matsumoto T, Toriumi T, Kazama T, Oki Y, Saito-Tamura Y, Tonogi M, Shimizu N, Honda M. Effect of collagenase concentration on the isolation of small adipocytes from human buccal fat pad. J Oral Sci 2018; 60:14-23. [PMID: 29479028 DOI: 10.2334/josnusd.16-0786] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Dedifferentiated fat (DFAT) cells were isolated from mature adipocytes using the ceiling culture method. Recently, we successfully isolated DFAT cells from adipocytes with a relatively small size (<40 μm). DFAT cells have a higher osteogenic potential than that of medium adipocytes. Therefore, the objective of this study was to determine the optimal concentration of collagenase solution for isolating small adipocytes from human buccal fat pads (BFPs). Four concentrations of collagenase solution (0.01%, 0.02%, 0.1%, and 0.5%) were used, and their effectiveness was assessed by the number of small adipocytes and DFAT cells isolated. The total number of floating adipocytes that dissociated with 0.02% collagenase was 2.5 times of that dissociated with 0.1% collagenase. The number of floating adipocytes with a diameter of ≤29 μm that dissociated with 0.02% collagenase was thrice of those dissociated with 0.1% and 0.5% collagenase. The number of DFAT cells that dissociated with 0.02% collagenase was 1.5 times of that dissociated with 0.1% collagenase. In addition, DFAT cells that dissociated with 0.02% collagenase had a higher osteogenic differentiation potential than those that dissociated with 0.1% collagenase. These results suggest that 0.02% is the optimal collagenase concentration for isolating small adipocytes from BFPs.
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Affiliation(s)
- Niina Tsurumachi
- Department of Orthodontics, Nihon University School of Dentistry
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University
| | - Taro Matsumoto
- Department of Functional Morphology Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
| | - Taku Toriumi
- Department of Anatomy, Nihon University School of Dentistry
| | - Tomohiko Kazama
- Department of Functional Morphology Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
| | - Yoshinao Oki
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University
| | | | - Morio Tonogi
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry
| | | | - Masaki Honda
- Department of Oral Anatomy, Aichi Gakuin University School of Dentistry
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Kohagura J, Yoshikawa M, Shima Y, Morikawa Y, Akita D, Hasegawa Y, Sakamoto M, Ichimura M, Imai T. Electron Density and Fluctuation Measurements by Using a Frequency Multiplied Microwave Interferometer in the GAMMA 10 Anchor Cell. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-a16899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J. Kohagura
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshikawa
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Shima
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Morikawa
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - D. Akita
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Hasegawa
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Sakamoto
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Ichimura
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Imai
- 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
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Suzuki D, Akita D, Tsurumachi N, Kano K, Yamanaka K, Kaneko T, Kawano E, Iguchi S, Toriumi T, Arai Y, Matsumoto T, Sato S, Honda M. Transplantation of mature adipocyte-derived dedifferentiated fat cells into three-wall defects in the rat periodontium induces tissue regeneration. J Oral Sci 2017; 59:611-620. [DOI: 10.2334/josnusd.16-0878] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Daigo Suzuki
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry
| | - Niina Tsurumachi
- Department of Orthodontics, Nihon University School of Dentistry
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University
| | | | | | - Eisuke Kawano
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Shinya Iguchi
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Taku Toriumi
- Department of Anatomy, Nihon University School of Dentistry
- Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry
| | | | - Taro Matsumoto
- Department of Functional Morphology, Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
| | - Shuichi Sato
- Department of Periodontology, Nihon University School of Dentistry
- Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
| | - Masaki Honda
- Department of Oral Anatomy, Aichi Gakuin University School of Dentistry
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Tsurumachi N, Akita D, Kano K, Matsumoto T, Toriumi T, Kazama T, Oki Y, Tamura Y, Tonogi M, Isokawa K, Shimizu N, Honda M. Small Buccal Fat Pad Cells Have High Osteogenic Differentiation Potential. Tissue Eng Part C Methods 2016; 22:250-9. [DOI: 10.1089/ten.tec.2015.0420] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Niina Tsurumachi
- Nihon University Graduate School of Dentistry, Chiyoda-ku, Japan
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Taro Matsumoto
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, Nihon University School of Medicine, Itabashi-ku, Japan
| | - Taku Toriumi
- Department of Anatomy, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Tomohiko Kazama
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, Nihon University School of Medicine, Itabashi-ku, Japan
| | - Yoshinao Oki
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Yoko Tamura
- Department of Orthodontics, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Morio Tonogi
- Department of Oral Surgery, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Keitaro Isokawa
- Department of Anatomy, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Noriyoshi Shimizu
- Department of Orthodontics, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Masaki Honda
- Department of Oral Anatomy, Aichi-Gakuin University School of Dentistry, Nagoya, Japan
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Akita D, Kano K, Saito-Tamura Y, Mashimo T, Sato-Shionome M, Tsurumachi N, Yamanaka K, Kaneko T, Toriumi T, Arai Y, Tsukimura N, Matsumoto T, Ishigami T, Isokawa K, Honda M. Use of Rat Mature Adipocyte-Derived Dedifferentiated Fat Cells as a Cell Source for Periodontal Tissue Regeneration. Front Physiol 2016; 7:50. [PMID: 26941649 PMCID: PMC4763019 DOI: 10.3389/fphys.2016.00050] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 02/02/2016] [Indexed: 12/25/2022] Open
Abstract
Lipid-free fibroblast-like cells, known as dedifferentiated fat (DFAT) cells, can be generated from mature adipocytes with a large single lipid droplet. DFAT cells can re-establish their active proliferation ability and can transdifferentiate into various cell types under appropriate culture conditions. The first objective of this study was to compare the multilineage differentiation potential of DFAT cells with that of adipose-derived stem cells (ASCs) on mesenchymal stem cells. We obtained DFAT cells and ASCs from inbred rats and found that rat DFAT cells possess higher osteogenic differentiation potential than rat ASCs. On the other hand, DFAT cells show similar adipogenic differentiation, and chondrogenic differentiation potential in comparison with ASCs. The second objective of this study was to assess the regenerative potential of DFAT cells combined with novel solid scaffolds composed of PLGA (Poly d, l-lactic-co-glycolic acid) on periodontal tissue, and to compare this with the regenerative potential of ASCs combined with PLGA scaffolds. Cultured DFAT cells and ASCs were seeded onto PLGA scaffolds (DFAT/PLGA and ASCs/PLGA) and transplanted into periodontal fenestration defects in rat mandible. Micro computed tomography analysis revealed a significantly higher amount of bone regeneration in the DFAT/PLGA group compared with that of ASCs/PLGA and PLGA-alone groups at 2, 3, and 5 weeks after transplantation. Similarly, histomorphometric analysis showed that DFAT/PLGA groups had significantly greater width of cementum, periodontal ligament and alveolar bone than ASCs/PLGA and PLGA-alone groups. In addition, transplanted fluorescent-labeled DFAT cells were observed in the periodontal ligament beside the newly formed bone and cementum. These findings suggest that DFAT cells have a greater potential for enhancing periodontal tissue regeneration than ASCs. Therefore, DFAT cells are a promising cell source for periodontium regeneration.
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Affiliation(s)
- Daisuke Akita
- Department of Partial Denture Prosthodontics, School of Dentistry, Nihon University Tokyo, Japan
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Science, Nihon University Fujisawa, Japan
| | - Yoko Saito-Tamura
- Department of Orthodontics, School of Dentistry, Nihon University Tokyo, Japan
| | - Takayuki Mashimo
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Juntendo University Tokyo, Japan
| | - Momoko Sato-Shionome
- Department of Pediatric Dentistry, School of Dentistry, Nihon University Tokyo, Japan
| | - Niina Tsurumachi
- Department of Orthodontics, School of Dentistry, Nihon University Tokyo, Japan
| | | | | | - Taku Toriumi
- Department of Anatomy, School of Dentistry, Nihon University Tokyo, Japan
| | | | - Naoki Tsukimura
- Department of Partial Denture Prosthodontics, School of Dentistry, Nihon University Tokyo, Japan
| | - Taro Matsumoto
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, School of Medicine, Nihon University Tokyo, Japan
| | - Tomohiko Ishigami
- Department of Partial Denture Prosthodontics, School of Dentistry, Nihon University Tokyo, Japan
| | - Keitaro Isokawa
- Department of Anatomy, School of Dentistry, Nihon University Tokyo, Japan
| | - Masaki Honda
- Department of Oral Anatomy, School of Dentistry, Aichi-Gakuin University Nagoya, Japan
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11
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Kaku M, Akiba Y, Akiyama K, Akita D, Nishimura M. Cell-based bone regeneration for alveolar ridge augmentation--cell source, endogenous cell recruitment and immunomodulatory function. J Prosthodont Res 2015; 59:96-112. [PMID: 25749435 DOI: 10.1016/j.jpor.2015.02.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 02/05/2015] [Indexed: 11/30/2022]
Abstract
Alveolar ridge plays a pivotal role in supporting dental prosthesis particularly in edentulous and semi-dentulous patients. However the alveolar ridge undergoes atrophic change after tooth loss. The vertical and horizontal volume of the alveolar ridge restricts the design of dental prosthesis; thus, maintaining sufficient alveolar ridge volume is vital for successful oral rehabilitation. Recent progress in regenerative approaches has conferred marked benefits in prosthetic dentistry, enabling regeneration of the atrophic alveolar ridge. In order to achieve successful alveolar ridge augmentation, sufficient numbers of osteogenic cells are necessary; therefore, autologous osteoprogenitor cells are isolated, expanded in vitro, and transplanted to the specific anatomical site where the bone is required. Recent studies have gradually elucidated that transplanted osteoprogenitor cells are not only a source of bone forming osteoblasts, they appear to play multiple roles, such as recruitment of endogenous osteoprogenitor cells and immunomodulatory function, at the forefront of bone regeneration. This review focuses on the current consensus of cell-based bone augmentation therapies with emphasis on cell sources, transplanted cell survival, endogenous stem cell recruitment and immunomodulatory function of transplanted osteoprogenitor cells. Furthermore, if we were able to control the mobilization of endogenous osteoprogenitor cells, large-scale surgery may no longer be necessary. Such treatment strategy may open a new era of safer and more effective alveolar ridge augmentation treatment options.
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Affiliation(s)
- Masaru Kaku
- Division of Bioprosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
| | - Yosuke Akiba
- Division of Bioprosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kentaro Akiyama
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - Masahiro Nishimura
- Department of Oral Maxillofacial Prosthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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12
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Akita D, Morokuma M, Saito Y, Yamanaka K, Akiyama Y, Sato M, Mashimo T, Toriumi T, Arai Y, Kaneko T, Tsukimura N, Isokawa K, Ishigami T, Honda MJ. Periodontal tissue regeneration by transplantation of rat adipose-derived stromal cells in combination with PLGA-based solid scaffolds. Biomed Res 2014; 35:91-103. [PMID: 24759177 DOI: 10.2220/biomedres.35.91] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Regeneration of damaged periodontium is challenging due to its multi-tissue composition. Mesenchymalstem cell-based approaches using adipose-derived stromal cells (ASCs) may contribute to periodontal reconstruction, particularly when combined with the use of scaffolds to maintain a space for new tissue growth. The aim of this study was to assess the regenerative potential of ASCs derived from inbred or outbred rats in combination with novel solid scaffolds composed of PLGA (Poly D,L-lactic-co-glycolic acid) (PLGA-scaffolds). Cultured ASCs seeded onto PLGA scaffolds (ASCs/PLGA) or PLGA-scaffolds (PLGA) alone were transplanted into periodontal fenestration defects created in F344 or Sprague Dawley (SD) rats. Micro-CT analysis showed a significantly higher percentage of bone growth in the ASCs/PLGA groups compared with the PLGA-alone groups at five weeks after surgery. Similarly, histomorphometric analysis demonstrated thicker growth of periodontal ligament and cementum layers in the ASCs/PLGA-groups compared with the PLGA-alone groups. In addition, transplanted DiI-labeled ASCs were observed in the periodontal regenerative sites. The present investigation demonstrated the marked ability of ASCs in combination with PLGA scaffolds to repair periodontal defects.
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Affiliation(s)
- Daisuke Akita
- Nihon University Graduate School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku Tokyo 101-8310, Japan
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13
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Sato M, Toriumi T, Watanabe N, Watanabe E, Akita D, Mashimo T, Akiyama Y, Isokawa K, Shirakawa T, Honda MJ. Characterization of mesenchymal progenitor cells in crown and root pulp from human mesiodentes. Oral Dis 2014; 21:e86-97. [PMID: 24605962 DOI: 10.1111/odi.12234] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 01/08/2014] [Accepted: 02/02/2014] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Mesiodentes are usually found in the central position of the upper or lower jaw as supernumerary teeth. Here, we obtained 10 mesiodentes and three permanent teeth (PT) and separated the dental pulp (DP) from these into crown and root portions. We then characterized and compared the isolated crown portion-derived cells (crown cells) with root portion-derived cells (root cells) using a range of in vitro assays. MATERIALS AND METHODS Crown cells and root cells were examined for cell surface marker expression, colony-forming unit-fibroblast (CFU-F), cell proliferation, cell cycle characteristics and markers, and osteogenic and adipogenic differentiation. RESULTS The proportion of CD105-positive cells (CD105(+) cells) in the crown cells vs the root cells varied among the mesiodentes, but not among the PT. When there were more CD105(+) cells in the root cells than in the crown cells, the root cells showed higher CFU-F, proliferation capacity, and osteogenic differentiation capacity. In contrast, when the crown cells contained more CD105(+) cells than the root cells, the crown cells showed the higher CFU-F, proliferation capacity, and osteogenic differentiation capacity. In addition, the sorted CD105(+) cells showed higher CFU-F and proliferation capacity than the sorted CD105(-) cells. CONCLUSION These results indicated that proportion of CD105(+) cells is an effective means of characterizing DP-derived cells in mesiodentes.
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Affiliation(s)
- M Sato
- Nihon University Graduate School of Dentistry, Tokyo, Japan
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14
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Akita D, Yoshikawa M, Sakamoto M, Kohagura J, Shima Y, Yamada T, Morikawa Y, Hasegawa Y, Imai T. Improvement of Measurement Accuracy of the Phase Imaging Interferometer in GAMMA 10. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- D. Akita
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshikawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Sakamoto
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - J. Kohagura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Shima
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Yamada
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Morikawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Hasegawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Imai
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
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15
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Hasegawa Y, Yoshikawa M, Kohagura J, Sakamoto M, Shima Y, Akita D, Morikawa Y, Ichimura M, Imai T. Radial Electron Density Measurement by Using a Multi-Channel Microwave Interferometer in the Tandem Mirror GAMMA 10. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Hasegawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshikawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - J. Kohagura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Sakamoto
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Shima
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - D. Akita
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Morikawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Ichimura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Imai
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
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16
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Morikawa Y, Yoshikawa M, Kohagura J, Shima Y, Hasegawa Y, Akita D, Sakamoto M, Imai T. Density Fluctuation Measurements of the GAMMA 10 Plasma by Using the Fraunhofer Diffraction Method. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Morikawa
- Plasma Research Center, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshikawa
- Plasma Research Center, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - J. Kohagura
- Plasma Research Center, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Shima
- Plasma Research Center, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Hasegawa
- Plasma Research Center, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - D. Akita
- Plasma Research Center, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Sakamoto
- Plasma Research Center, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Imai
- Plasma Research Center, University of Tsukuba 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
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Kohagura J, Yoshikawa M, Shima Y, Morikawa Y, Yamada T, Akita D, Tatebe K, Ichimura M, Hirata M, Ikezoe R, Yokoyama T, Imai T. A new frequency-multiplied interferometer system in the GAMMA 10 tandem mirror. Rev Sci Instrum 2012; 83:10E310. [PMID: 23126970 DOI: 10.1063/1.4731006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A new interferometer is installed on the west anchor cell of the GAMMA 10 tandem mirror. In GAMMA 10, we have used a heterodyne-type interferometer with a 70-GHz IMPATT oscillator and a 150-MHz oscillator for frequency modulation. The new interferometer consists of a 17.5-GHz phase locked dielectric resonator oscillator and a 37.5-MHz temperature-compensated crystal oscillator, as well as frequency multipliers. The main motivation for the new interferometer using frequency multipliers is to achieve a stable and cost effective interferometer. Direct anchor heating experiments with new anchor ion cyclotron range of frequency antennas in both the west and the east anchor cells are carried out. Density increases in both anchor cells are clearly observed using the new interferometer.
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Affiliation(s)
- J Kohagura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, Japan.
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