TOHOKU UNIVERSITY Researchers

Details of the Researcher

Home

日本語 English

Summary

Profile
Research History
Education
Professional Memberships

Research Activities

Papers
Misc.
Research Projects

Educational Activities

Contributions

Other

Shizu Saito

Section

Tohoku University Hospital

Job title

Assistant Professor

Degree

PhD (Tohoku University)

researchmap

https://researchmap.jp/shizu-saito

J-GLOBAL ID

202201005531108127

e-Rad No.

20964084

Research History 3

2022/04 - Present

Division of Oral and Maxillofacial Surgery, Department of Oral Medicine and Surgery, Tohoku University Graduate School of Dentistry
2021/04 - 2022/03

Division of Oral and Maxillofacial Surgery, Osaki citizen hospital
2017/04 - 2021/03

Division of Oral and Maxillofacial Surgery, Department of Oral Medicine and Surgery, Tohoku University Graduate School of Dentistry

Education 1

Tohoku University of Dentistry

2010/04 - 2016/03

Professional Memberships 6

日本口腔顔面痛学会

2021/11 - Present
日本顎関節学会

2021/10 - Present
日本再生医療学会

2020/10 - Present
日本セラミックス協会

2020/01 - Present
日本口腔外科学会

2016/04 - Present
日本歯科理工学会

2020/10 -

︎Show all ︎Show first 5

Papers 27

Novel electromagnetic-navigated maxillary repositioning system for Le Fort I osteotomy: preclinical evaluation

Shizu Saito, Kyosuke Okuyama, Yuri Takeda, Shinnosuke Nogami, Nobuhiro Yoda, Masanori Hariyama, Kensuke Yamauchi

British Journal of Oral and Maxillofacial Surgery　63　(8)　562-567　2025/10
Publisher: Elsevier BV
DOI： 10.1016/j.bjoms.2024.10.231 　

ISSN： 0266-4356
磁気式ナビゲーションシステムを併用して切除した巨大な骨軟骨腫の1例

黒田佳奈子, 五十嵐彩乃, 齊藤志都, 千葉雅俊, 野上晋之介, 熊本裕行, 山内健介

日本顎関節学会雑誌　37　(Suppl.)　132-132　2025/07
Publisher: (一社)日本顎関節学会
ISSN： 0915-3004

eISSN： 1884-4308
下顎後退症患者に対する下顎前方移動後の下顎頭の3次元的形態評価

岩前有香, 武田裕利, 菅井優生, 矢崎麻衣, 奥山喬介, 井本和宏, 齋藤志都, 江副祐史, 野上晋之介, 山内健介

日本口腔科学会雑誌　74　(2)　150-150　2025/07
Publisher: (NPO)日本口腔科学会
ISSN： 0029-0297

eISSN： 2185-0461
Clinical and radiographic features of temporomandibular joint in patients with facial asymmetry. International-journal

Yoshio Otake, Shinnosuke Nogami, Yushi Ezoe, Yuki Sugai, Kyosuke Okuyama, Shizu Saito, Yuri Takeda, Kensuke Yamauchi

Oral and maxillofacial surgery　29　(1)　98-98　2025/05/10

DOI： 10.1007/s10006-025-01400-z 　

More details Close

PURPOSE: The purpose of this study was to investigate characteristics of mandibular head morphology and temporomandibular joint (TMJ) disorders (TMDs) on the deviation side (DS) and non-deviation side (NDS) in patients with facial asymmetry (FA). METHODS: Thirty patients diagnosed with FA were enrolled. Preoperative and postoperative joint sound and pain were evaluated in terms of clinical symptoms, and pre- and postoperative mandibular head morphology factors shown by computed tomography. In addition, magnetic resonance imaging findings were used to evaluate preoperative joint disc position and joint effusion (JE). RESULTS: The patients included 12 (40.0%) males and 18 (60.0%) females, with a mean age of 25.8 years. There were no significant differences regarding clinical symptoms between patients affected on the DS and those on the NDS. Preoperatively, the DS group showed a total of 4 joints (13.3%) with mandibular condyle head deformity, while postoperatively those patients had 13 (43.3%) and the NDS group 2 (6.7%), indicating a significant difference for condyle head deformity between patients affected on DS and NDS before and after surgery. The score for JE was 1.1 ± 1.0 in the DS group and 0.6 ± 0.8 in the NDS group, a significant difference (P < 0.05). CONCLUSION: As compared to the NDS, the DS in the present class III patients with FA showed a greater number of TMDs, such as condyle head deformity, disc displacement, and JE. It's important for surgeons and orthodontists to be aware of the possibility of TMDs on the DS in class III patients with FA when performing orthognathic surgery.
A case of orthognathic surgery for skeletal open bite with Noonan syndrome (NS)

Kyosuke Okuyama, Shizu Saito, Hikari Suzuki, Yushi Ezoe, Shinnosuke Nogami, Kensuke Yamauchi

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology　2025/02
Publisher: Elsevier BV
DOI： 10.1016/j.ajoms.2025.02.002 　

ISSN： 2212-5558
Le Fort I型骨切り術における骨片位置づけのための磁気式ナビゲーションとロボット活用

横田涼, 張山昌論, 斎藤志都, 山内健介

日本コンピュータ外科学会誌　26　(2)　131-131　2024/10
Publisher: (一社)日本コンピュータ外科学会
ISSN： 1344-9486

eISSN： 1884-5770
Changes in three-dimensional nasal morphology according to the direction of maxillary movement during Le Fort I osteotomy. International-journal

Tomoki Aihara, Mai Yazaki, Daigo Okamoto, Shizu Saito, Hikari Suzuki, Shinnosuke Nogami, Kensuke Yamauchi

Journal of plastic, reconstructive & aesthetic surgery : JPRAS　98　10-17　2024/08/13

DOI： 10.1016/j.bjps.2024.08.045 　

More details Close

BACKGROUND: Le Fort I (LFI) osteotomy is commonly performed by orthognathic surgeons; however, postoperative changes in nasolabial morphology are of concern. Several factors influence such changes, but it is difficult to accurately predict the postoperative results. This study evaluated the three-dimensional (3D) morphological changes in the nasal region according to the different directions of maxillary movement during LFI osteotomy. MATERIALS AND METHODS: Forty-one patients who underwent LFI osteotomies were included. All patients were divided into maxilla-up (Group U: 20 patients) and maxilla-forward (Group F: 21 patients) groups. Soft tissue morphologies were determined preoperatively and 3 or 6 months postoperatively using an optical 3D scanner. All datasets were evaluated in terms of volume changes in nine subregions and changes in linear measurements around the nasal area. RESULTS: Both groups exhibited increased nasal volumes after surgery in the order of the three upper, three central, and three lower subregions. The change in volume of the central nasal region tended to be greater in Group U than that in Group F. CONCLUSION: We evaluated 3D morphological changes in the nasal region according to the direction of maxillary movement during LFI osteotomy. Group U exhibited a large change in the volume of the central nasal region.
下顎後退症に対して下顎骨形成術と同時に両側関節円板整位術を施行した1例

齊藤志都, 矢崎麻衣, 奥山喬介, 井本和宏, 鈴木飛佳理, 武田裕利, 纐纈衆, 野上晋之介, 山内健介

日本顎変形症学会雑誌　34　(2)　112-112　2024/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
Influence of COVID-19 pandemic on mandible fractures – Multicentric study

Hikari Suzuki, Shinnosuke Nogami, Karen Hoshi, Yuki Tsuboi, Yoshio Otake, Hiromitsu Morishima, Shizu Saito, Kanako Kuroda, Mai Yazaki, Hiroaki Hirotani, Kyosuke Okuyama, Keisuke Higuchi, Hirokazu Nagai, Kensuke Yamauchi

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology　2024

DOI： 10.1016/j.ajoms.2024.01.005 　

ISSN： 2212-5558
Comparison of three-dimensional soft tissue changes according to the split pattern after sagittal split osteotomy in patients with skeletal class III malocclusion. International-journal

Mai Yazaki, Tomoki Aihara, Daigo Okamoto, Shizu Saito, Hikari Suzuki, Shinnosuke Nogami, Kensuke Yamauchi

Clinical oral investigations　28　(1)　34-34　2023/12/26

DOI： 10.1007/s00784-023-05431-2 　

More details Close

OBJECTIVES: This study aimed to analyse the changes in soft tissue and hard tissue stability associated with the split pattern, i.e. long split (LS) or short split (SS), after sagittal split osteotomy. MATERIALS AND METHODS: Patients who underwent sagittal split ramus osteotomy were classified into LS or SS groups according to postoperative computed tomography images. They were examined via lateral cephalography and three-dimensional (3D) optical scanning before surgery (T0) and 1 (T1), 3 (T2), and 12 (T3) months after surgery. Six standard angles (SNA, SNB, ANB, FMA, FMIA, and IMPA) were used as measures of hard tissue change. The two sets of 3D data were superimposed, and the volumetric differences were calculated as the soft tissue change. The areas evaluated were delimited by 10 × 20-mm rectangles in the frontal aspect and a 25 × 25-mm square in the lateral aspect. RESULTS: A total of 42 sides (26 patients) were analysed, including 20 (16 patients) in the SS group and 22 (16 patients) in the LS group. We found no significant differences in cephalographic angle or soft tissue changes in the frontal aspect between the SS and LS groups. We found significant differences in the subauricular region from T0-T1 (p = 0.02), T0-T2 (p = 0.03), and T0-T3 (p = 0.037) in terms of soft tissue changes in the lateral aspect. The volume increase associated with posterior mandibular movement was greater in the LS group. CONCLUSIONS: We found that LS patients with mandibular prognathism exhibited increased subauricular volumes following mandibular setback. CLINICAL RELEVANCE: It is essential to predict the postoperative facial profile before surgery. The split pattern after sagittal split osteotomy affects the postoperative profile of patients with mandibular prognathism.
下顎智歯抜歯後に下顎骨骨折を認めた2例

齊藤志都, 梶田倫功, 鈴木飛佳理, 大竹義雄, 森島浩允, 武田裕利, 野上晋之介, 山内健介

口腔顎顔面外傷　22　(2)　128-128　2023/12
Publisher: 日本口腔顎顔面外傷学会
ISSN： 1347-9903
新型コロナウイルス(COVID-19)パンデミック前後における下顎骨骨折患者の臨床的検討

星香蓮, 野上晋之介, 鈴木飛佳理, 齊藤志都, 黒田佳奈子, 奥山喬介, 矢崎麻衣, 大竹義雄, 樋口景介, 廣谷拓章, 永井宏和, 山内健介

口腔顎顔面外傷　22　(2)　119-120　2023/12
Publisher: 日本口腔顎顔面外傷学会
ISSN： 1347-9903
von Recklinghausen病(NF1)を伴う骨格性下顎前突症に対して下顎枝垂直骨切り術を施行した1例

齊藤志都, 野上晋之介, 奥山喬介, 鈴木飛佳理, 森島浩允, 山内健介

日本口腔外科学会雑誌　69　(10)　464-469　2023/10
Publisher: (公社)日本口腔外科学会
ISSN： 0021-5163
Le Fort I型骨切り術の上顎後方移動における翼突上顎縫合部の形態評価

野上晋之介, 武田裕利, 齊藤志都, 鈴木飛佳理, 井本和宏, 矢崎麻衣, 黒田佳奈子, 山内健介

日本顎変形症学会雑誌　33　(2)　142-142　2023/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
当科での両側下顎枝矢状分割術における術中出血量に関する臨床的検討

井本和宏, 野上晋之介, 矢崎麻衣, 齊藤志都, 鈴木飛佳理, 武田裕利, 山内健介

日本顎変形症学会雑誌　33　(2)　201-201　2023/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
A case of tenosynovial giant cell tumor secondary to synovial chondromatosis in the temporomandibular joint

Hiromitsu Morishima, Shinnosuke Nogami, Ayano Igarashi, Kazuhiro Imoto, Shizu Saito, Masatoshi Chiba, Hiroyuki Kumamoto, Tetsu Takahashi, Kensuke Yamauchi

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology　2023/03
Publisher: Elsevier BV
DOI： 10.1016/j.ajoms.2023.03.009 　

ISSN： 2212-5558
Calibration-free Electromagnetic Navigation System for maxillary positioning in the Le Fort I osteotomy

Kondo Ekyu, Hariyama Masanori, Yamauchi Kensuke, Yoda Nobuhiro, Saito Shizu

Proceedings of the Japan Joint Automatic Control Conference　66　94-96　2023
Publisher: The Japan Joint Automatic Control Conference
DOI： 10.11511/jacc.66.0_94 　
Radiologic Risk Factors for Persistent Mandibular Nerve Neurosensory Disturbance Following Sagittal Split Osteotomy. International-journal

Tomonari Kajita, Shinnosuke Nogami, Hikari Suzuki, Shizu Saito, Kensuke Yamauchi, Tetsu Takahashi

Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons　80　(7)　1183-1190　2022/02/15

DOI： 10.1016/j.joms.2022.02.003 　

More details Close

PURPOSE: Neurosensory disturbance (NSD) occurring in the lower lips and chin is a major postoperative complication related to bilateral sagittal split osteotomy (SSO). The purpose of this study is to identify preoperative radiographic findings following SSO procedure associated with persistent NSD. METHODS: This retrospective cohort study analyzed data for consecutive patients who underwent SSO. Primary predictor variables, including ramus width, mandibular body height, mandibular angle length, gonial angle, distance from mental foramen to distal aspect of mandibular second molar (MFD), and measurement of bone marrow space (BMS), were examined in a series of radiographic images. The primary outcome variable was NSD. Patients with NSD were divided into 2 groups based on findings obtained 1 year postoperatively: persistent, for those with NSD remaining after 1 year, and transient, when NSD occurred for less than 1 year. Covariates included sex and age. Comparisons were analyzed by use of Mann-Whitney U test or χ2 test. Multivariate analysis was performed using step-wise logistic regression to determine significant factors related to persistent NSD. A P value .005 or less was considered statistically significant. RESULTS: Of the 349 sides investigated, the persistent NSD group consisted of 59 sides (16.9%), while the transient NSD group consisted of 290 sides (83.1%). The occurrence of persistent NSD was correlated with age (P < .05), MFD (P < .001), mandibular body height (P < .05), and BMS (P < .001). Multivariate logistic analysis also showed a significant association of MFD (P < .001) and BMS (P < .001). CONCLUSIONS: Preoperative MFD and BMS are radiographic findings that are associated with an increased risk for persistent NSD following SSO procedure.
A comparison of postoperative, three-dimensional soft tissue changes in patients with skeletal class III malocclusions treated via orthodontics-first and surgery-first approaches. International-journal

Daigo Okamoto, Kensuke Yamauchi, Mai Yazaki, Shizu Saito, Hikari Suzuki, Shinnosuke Nogami, Tetsu Takahashi

Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery　49　(10)　898-904　2021/10

DOI： 10.1016/j.jcms.2021.04.011 　

More details Close

The aim of this retrospective study was to compare three-dimensional (3D) soft tissue and hard tissue changes between orthodontics-first approach (OFA) and surgery-first approach (SFA) after mandibular setback surgery. All patients underwent bilateral sagittal split osteotomy, and were examined by lateral cephalograms and 3D optical scanner before surgery (T0) and 1 (T1), 3 (T2), and 12 (T3) months after surgery. Three standard angles (FMA, U1 to FH, IMPA) were measured as hard tissue change and the 2 sets of 3D data were superimposed, and volumetric differences were calculated as soft tissue change. Statistical analyses were performed by using unpaired t-tests. Differences with P < 0.05 were considered significant. A total of 39 patients with mandibular prognathism were included in this study. The OFA group consisted of 24 patients and the SFA group of 15 patients. The SFA group exhibited more labial inclination from T1 to T2 (p = 0.008) and T2 to T3 (p = 0.003) than did the OFA group. There were no significant changes at maxilla and mandible at each term of T0, T1, T2 and T3 (p > 0.05), but compared to before surgery, mandibular volume in SFA group significant increased at 1year (p = 0.049) after surgery. We found that the soft tissue changes after the SFA differed significantly from those after the OFA; thus, soft tissue predictions require more care. An analysis of our data compared with OFA and SFA for the patient with mandibular prognathism confirm that the mandibular soft tissue changes by postoperative orthodontic treatment and occlusal relationship in SFA.
Involvement of distant octacalcium phosphate scaffolds in enhancing early differentiation of osteocytes during bone regeneration. International-journal

Shizu Saito, Ryo Hamai, Yukari Shiwaku, Tomoka Hasegawa, Susumu Sakai, Kaori Tsuchiya, Yuko Sai, Ryosuke Iwama, Norio Amizuka, Tetsu Takahashi, Osamu Suzuki

Acta biomaterialia　129　309-322　2021/07/15

DOI： 10.1016/j.actbio.2021.05.017 　

More details Close

This study hypothesized that distant octacalcium phosphate (OCP) scaffolds may enhance osteocyte differentiation in newly formed bone matrices. The results obtained were compared with those of Ca-deficient hydroxyapatite (OCP hydrolyzate, referred to as HL hereafter). Granular OCP and HL, 300-500 µm in diameter, were implanted in critical-sized rat calvarial defects for eight weeks and subjected to histology, immunohistochemistry, histomorphometry, and transmission electron microscopy (TEM). Early osteocyte differentiation from an osteoblastic cell line (IDG-SW3) was examined using materials without contacting the surfaces for 10 days. The material properties and the medium composition were analyzed through selected area electron diffraction (SAED) using TEM observation and curve fitting of Fourier transform infrared (FT-IR) spectroscopy. The number of positive cells of an osteocyte earlier differentiation marker podoplanin (PDPN) in bone matrices, along the direction of bone formation, was significantly higher in OCP than that in HL. The ultrastructure around the OCP surfaces observed by TEM showed the infiltration of some cells, including osteocytes adjacent to the OCP surface layers. The OCP structure remained unchanged by SAED analysis. Nanoparticle deposition and hydrolysis on OCP surfaces were detected by TEM and FT-IR, respectively, during early osteocyte differentiation in vitro. The medium saturation degree varied in accord with ionic dissolution, resulting in possible hydroxyapatite formation on OCP but not on HL. These results suggested that OCP stimulates early osteocyte differentiation in the bone matrix from a distance through its metastable chemical properties. STATEMENT OF SIGNIFICANCE: This study demonstrated that octacalcium phosphate (OCP) implanted in critical-sized rat calvaria bone defects is capable of enhancing the early differentiation of osteocytes embedded in newly formed bone matrices, even when the surface OCP is separated from the osteocytes. This prominent bioactive property of OCP was demonstrated by comparing the in vivo and in vitro performances with a control material, Ca-deficient hydroxyapatite (OCP hydrolyzate). The findings were elucidated by histomorphometry, which analyzed the differentiation of osteocytes along the parallel direction of new bone growth by osteoblasts. Therefore, OCP should stimulate osteocyte differentiation through ionic dissolution even in vivo owing to its metastable chemical properties, as previously reported in an in vitro study (Acta Biomater 69:362, 2018).
下顎枝矢状分割術後における長期残存した下唇・オトガイ部知覚異常と下顎骨形態の関係性について

鈴木飛佳理, 野上晋之介, 矢崎麻衣, 奥山喬介, 斎藤志都, 岡本大吾, 山内健介, 高橋哲

日本口腔科学会雑誌　70　(2)　169-169　2021/07
Publisher: (NPO)日本口腔科学会
ISSN： 0029-0297

eISSN： 2185-0461
下顎枝矢状分割術後における残存した下唇・オトガイ部知覚異常に影響を及ぼす因子に関する検討

梶田倫功, 野上晋之介, 矢崎麻衣, 齋藤志都, 鈴木飛佳理, 山内健介, 高橋哲

日本顎変形症学会雑誌　31　(2)　151-151　2021/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
エストロゲンおよび機械的圧縮刺激が顎関節に与える影響について

野上晋之介, 山内健介, 小田島健二, 斎藤志都, 矢崎麻衣, 鈴木飛佳理, 高橋哲

日本顎変形症学会雑誌　31　(2)　144-144　2021/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
The relationship between neurosensory disturbance of the inferior alveolar nerve and the lingual split pattern after sagittal split osteotomy. International-journal

Gerardo Martinez-de la Cruz, Kensuke Yamauchi, Shizu Saito, Hikari Suzuki, Yoshihiro Yamaguchi, Yoshihiro Kataoka, Shinnosuke Nogami, Tetsu Takahashi

Oral surgery, oral medicine, oral pathology and oral radiology　130　(4)　373-378　2020/10

DOI： 10.1016/j.oooo.2020.05.008 　

More details Close

OBJECTIVE: The aim of this study was to evaluate the relationship between neurosensory disturbance (NSD) and the different types of bilateral sagittal split osteotomy (BSSO) lingual fracture created. STUDY DESIGN: The study group consisted of 45 patients with mandibular deformities (90 sides; 14 males and 31 females). Computed tomography (CT) scans were obtained preoperatively and 1 week postoperatively. All patients were divided into lingual fracture line groups on the basis of their postoperative scans. NSD was tested preoperatively and 1, 3, and 12 months postoperatively by using a sensory touch Semmes-Weinstein (SW) test and the 2-point discrimination (TPD) test. RESULTS: Patients were divided into 2 groups on the basis of their lingual fracture lines after mandibular BSSO; among the 45 patients, 39 sides (43.3%) had short-splits, and 51 sides (56.7%) had long-splits. The short-split group was less affected at all tested times, and the difference between the 2 groups was significant 1 month postoperatively on TPD test but not at other times on the both tests. CONCLUSIONS: The split type did not affect the NSD incidence at 3 and 12 months postoperatively.
The Accuracy of Maxillary Position Using a Computer-Aided Design/Computer-Aided Manufacturing Intermediate Splint Derived Via Surgical Simulation in Bimaxillary Orthognathic Surgery. International-journal

Yoshihiro Yamaguchi, Kensuke Yamauchi, Hikari Suzuki, Shizu Saito, Shinnosuke Nogami, Tetsu Takahashi

The Journal of craniofacial surgery　31　(4)　976-979　2020/06

DOI： 10.1097/SCS.0000000000006305 　

More details Close

PURPOSE: The purpose of this study was to assess the clinical interventions and the accuracy of maxillary reposition using a computer-aided design/computer-aided manufacturing (CAD/CAM) splint derived via surgical simulation. MATERIALS AND METHODS: The retrospective study comprised 24 patients who underwent bimaxillary surgery. The patients were assigned to 1 of 2 groups by a way of maxillary repositioning. One group received conventional intermediate wafers and the other CAD/CAM wafers during Le Fort I osteotomy. We recorded operation time, blood loss, the operative accuracy. Accuracy was analyzed by 3-dimensional computed tomography images before and immediately after the operation. The evaluation points were the right maxillary first incisor (U1), the right maxillary second molar (M2-right), and the left maxillary second molar (M2-left). RESULTS: The 2 groups did not differ significantly in operation time and blood losses. The vertical axis of U1 data differed significantly between the 2 groups (P = 0.008). None of the horizontal, vertical, or anteroposterior axis of M2-right data differed significantly, and anteroposterior axis of M2-left data differed significantly (P = 0.0296). The CAD/CAM group 3-dimensional distance errors were less than those of the conventional group for all points. CONCLUSION: Placement of CAD/CAM splint allowed highly accurate repositioning; the accuracy exceeded that afforded by conventional model surgery using a facebow and articulator.
顎矯正手術による三次元軟組織形態変化下顎後方移動術と前方移動術の比較検討

矢崎麻衣, 岡本大吾, 山口佳宏, 斎藤志都, 鈴木飛佳理, 野上晋之介, 山内健介, 高橋哲

日本顎変形症学会雑誌　30　(2)　131-131　2020/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
Pyramidal and posterior osseous release for maxillary superior/posterior mobilization using an ultrasonic bone-cutting device after Le Fort I osteotomy. International-journal

Kensuke Yamauchi, Hikari Suzuki, Yoshihiro Yamaguchi, Shizu Saito, Shinnosuke Nogami, Tetsu Takahashi

Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery　48　(2)　170-175　2020/02

DOI： 10.1016/j.jcms.2020.01.002 　

More details Close

AIM: The purpose of this study was to evaluate the efficiency of pyramidal and posterior osseous release (PPOR) for maxillary impaction using an ultrasonic bone-cutting device after Le Fort I (LFI) osteotomy. MATERIALS AND METHODS: In total, 31 Japanese adults with jaw deformities, diagnosed as having maxillary excess with mandibular prognathism or deficiency, underwent LFI osteotomy and bilateral sagittal split osteotomy. The patients were divided into two groups: a trimming group (15 patients, four men and 11 women; mean age 24.8 years) and a PPOR group (16 patients, seven men and nine women; mean age 22.8 years). In the trimming group, osseous interference around the descending palatine artery (DPA) was removed using forceps, rounding bur, and reciprocating rasp. The PPOR technique was used to remove osseous fragments created by V-shaped osteotomy around the DPA following vertical osteotomy behind the DPA using an ultrasonic bone-cutting device (Variosurg 3; NSK, Tochigi, Japan). The operative times for maxillary osteotomy, total operative times (including bilateral sagittal split osteotomy), and total blood loss were assessed. RESULTS: The mean planned amounts of maxillary impaction were 4.37 ± 1.27 mm in the trimming group and 4.38 ± 1.36 mm in the PPOR group (p = 0.98). The mean maxillary operative time for the PPOR group was significantly shorter, by 25.5% (p < 0.001). Total operative time for the PPOR group was also significantly shorter, by 24.3% (p < 0.001). Mean blood loss was significantly lower in the PPOR group than in the trimming group (p = 0.003). CONCLUSION: The PPOR technique for maxillary impaction after LFI osteotomy shortened the operative time and enabled secure reduction of the maxilla in patients who required the treatment of maxillary impaction with preservation of the DPA bundle.

Show all ︎Show first 5

Misc. 23

Clinical evaluations of maxillary fracture patterns at Le Fort I osteotomy

菅井優生, 矢崎麻衣, 奥山喬介, 黒田佳奈子, 齊藤志都, 武田裕利, 野上晋之介, 山内健介

日本顎変形症学会雑誌　35　(2)　2025

ISSN： 0916-7048
A study on cases of cotton wool like composite in the bone gap caused by anterior mandibular movement

奥山喬介, 野上晋之介, 簑原怜奈, 菅井優生, 齊藤志都, 武田裕利, 山内健介

日本顎変形症学会雑誌　35　(2)　2025

ISSN： 0916-7048
Magnetic Navigation and Robot Utilization for Bone Fragment Positioning in Le Fort I Osteotomy

横田涼, 張山昌論, 斎藤志都, 山内健介

日本コンピュータ外科学会誌(Web)　26　(2)　2024

ISSN： 1884-5770
Clinical study of the relationship between the condition of temporomandibular joint and postoperative stability

鈴木飛佳理, 岩前有香, 菅井優生, 奥山喬介, 斎藤志都, 武田裕利, 野上晋之介, 山内健介

日本顎変形症学会雑誌　34　(2)　2024

ISSN： 0916-7048
Le Fort I型骨切り術での磁気式ナビゲーション法による骨片位置づけの実験的検討

齊藤志都, 野上晋之介, 矢崎麻衣, 奥山喬介, 岡本大吾, 鈴木飛佳理, 武田裕利, 山内健介

日本顎変形症学会雑誌　33　(2)　176-176　2023/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
Calibration-free Electromagnetic Navigation System for maxillary positioning in the Le Fort I osteotomy

近藤恵休, 張山昌論, 山内健介, 依田信裕, 齋藤志都

自動制御連合講演会(CD-ROM)　66th　2023
新型コロナウイルス(COVID-19)パンデミック前後における下顎骨骨折患者の臨床的検討

星香蓮, 野上晋之介, 鈴木飛佳理, 齊藤志都, 黒田佳奈子, 奥山喬介, 矢崎麻衣, 大竹義雄, 樋口景介, 廣谷拓章, 永井宏和, 山内健介

口腔顎顔面外傷　22　(2)　2023

ISSN： 1347-9903
Simultaneous inverted L ramus osteotomy and bone graft for facial asymmetry; 2 cases report

矢崎麻衣, 齊藤志都, 鈴木飛佳理, 岡本大吾, 野上晋之介, 山内健介, 高橋哲

日本顎変形症学会雑誌　31　(2)　107-107　2021/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
リン酸八カルシウム(OCP)が新生骨基質の骨細胞分化に及ぼす影響の検討

齊藤志都, 齊藤志都, 塩飽由香利, 濱井瞭, 長谷川智香, 網塚憲生, 高橋哲, 鈴木治

日本再生医療学会総会(Web)　20th　2021
Bone regeneration and osteocyte differentiation induced by octacalcium phosphate (OCP)

塩飽由香利, 塩飽由香利, 齊藤志都, 濱井瞭, 長谷川智香, 網塚憲生, 蔡優広, 高橋哲, 鈴木治

日本バイオマテリアル学会大会予稿集(Web)　43rd　2021
下顎枝矢状分割術後における下唇・オトガイ部知覚異常の長期残存症例の検討

野上晋之介, 山内健介, 鈴木飛佳理, 齊藤志都, 山口佳宏, 岡本大吾, 阿部陽子, 高橋哲

日本口腔科学会雑誌　69　(2)　90-90　2020/07
Publisher: (NPO)日本口腔科学会
ISSN： 0029-0297

eISSN： 2185-0461
顎矯正手術による三次元軟組織形態変化下顎後方移動術と前方移動術の比較検討

矢崎麻衣, 岡本大吾, 山口佳宏, 斎藤志都, 鈴木飛佳理, 野上晋之介, 山内健介, 高橋哲

日本顎変形症学会雑誌　30　(2)　131-131　2020/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
Analysis of osteocyte differentiation during bone formation by OCP implantation

齊藤志都, 塩飽由香利, 濱井瞭, 高橋哲, 鈴木治, 長谷川智香, 網塚憲生

日本セラミックス協会年会講演予稿集(CD-ROM)　2020　2020
当科における過去5年間の口腔扁平上皮癌NO症例の臨床的検討

武田裕利, 宮下仁, 北村淳, 齊藤志都, 黒田佳奈子, 森士朗, 山内健介, 永井宏和, 高橋哲

日本口腔腫瘍学会総会・学術大会プログラム・抄録集　38th　2020
CAD/CAMスプリントを使用したLe Fort I型骨切り術における上顎骨片の正確度評価

山口佳宏, 山内健介, 奥山喬介, 齊藤志都, 鈴木飛佳理, 阿部陽子, 野上晋之介, 高橋哲

日本顎変形症学会雑誌　29　(2)　174-174　2019/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
当科における過去5年間の口腔扁平上皮癌N0症例の臨床的検討

武田裕利, 黒羽根壮, 宮下仁, 纐纈衆, 纐纈衆, 北村淳, 斎藤博紀, 田代和樹, 柳沢佑太, 井本和宏, 黒田佳奈子, 齊藤志都, 森士朗, 永井宏和, 山内健介, 高橋哲

頭頸部癌　45　(2)　2019

ISSN： 1349-5747
後期高齢者口腔癌症例の臨床学的検討

武田裕利, 宮下仁, 黒羽根壮, 田代和樹, 川井忠, 野上晋之介, 北村淳, 纐纈衆, 齊藤博紀, 齊藤志都, 黒田佳奈子, 小川武則, 大越明, 石田英一, 森士朗, 山内健介, 永井宏和, 高橋哲

日本口腔腫瘍学会総会・学術大会プログラム・抄録集　37th　2019
Le For I型骨切り術術後のプレート除去による外鼻形態変化についての3次元的評価

岡本大吾, 山口佳宏, 斎藤志都, 鈴木飛佳理, 野上晋之介, 山内健介, 高橋哲

日本口腔科学会雑誌　67　(2)　153-153　2018/07
Publisher: (NPO)日本口腔科学会
ISSN： 0029-0297
顎矯正手術後の治癒過程における骨代謝活性亢進

阿部陽子, 千葉美麗, 齋藤志都, 鈴木飛佳理, 野上晋之介, 山内健介, 高橋哲

日本顎変形症学会雑誌　28　(2)　148-148　2018/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
当科における過去4年間の口腔扁平上皮癌NO症例の臨床的検討

黒羽根壮, 宮下仁, 永井宏和, 山内健介, 森士朗, 川井忠, 北村淳, 纐纈衆, 齊藤博紀, 田代和樹, 柳沢佑太, 井本和宏, 黒田佳奈子, 齊藤志都

頭頸部癌　44　(2)　233-233　2018/05
Publisher: (一社)日本頭頸部癌学会
ISSN： 1349-5747

eISSN： 1881-8382
術前に片側性咀嚼筋腱・腱膜過形成症を呈した骨格性下顎後退症の一例

奥山喬介, 山内健介, 片岡良浩, 齊藤志都, 鈴木飛佳理, 山口佳宏, 佐藤工, 阿部陽子, 野上晋之介, 坂東加南, 北浦英樹, 高橋哲

日本顎変形症学会雑誌　28　(2)　140-140　2018/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
両側下顎枝矢状分割術(BSSO)の分割パターンと術前術後の下唇オトガイ部知覚異常に関する評価

齊藤志都, 山内健介, 鈴木飛佳理, マルチネス・デ・ラ・クルス・ヘラルド, 山口佳宏, 片岡良浩, 里見徳久, 阿部陽子, 野上晋之介, 高橋哲

日本顎変形症学会雑誌　28　(2)　163-163　2018/05
Publisher: (NPO)日本顎変形症学会
ISSN： 0916-7048

eISSN： 1884-5045
CAD/CAMスプリントを使用したLe Fort I型骨切り術における上顎骨片の正確度評価

山口佳宏, 山内健介, 奥山喬介, 齊藤志都, 鈴木飛佳理, 野上晋之介, 高橋哲

日本顎変形症学会雑誌　28　(2)　2018

ISSN： 0916-7048

Show all ︎Show first 5

Research Projects 1

顎矯正手術での磁気式ナビゲーションを応用した次世代型手術支援システムの開発

齊藤志都

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究

Institution: 東北大学

2024/04/01 - 2027/03/31