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Cao LM, Kuo ZY, Yu YF, Jia J, Liu B, Bu LL. Postoperative volume maintenance rate of microvascular free flap in oral and maxillofacial region: Systematic review and meta-analysis. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2024; 125:101728. [PMID: 38070674 DOI: 10.1016/j.jormas.2023.101728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 12/06/2023] [Indexed: 08/28/2024]
Abstract
BACKGROUND AND OBJECTIVES The resorption of flap's volume can be frequently observed in the transplantation of microvascular free flaps, which could significantly affect postoperative function. Therefore, it's essential to comprehend the postoperative flap volume and the mechanisms behind before making clinical decisions. METHODS Literature search was conducted from database on PubMed, EMBASE, Cochrane Library, Chinese database and Google Scholar. A random effects model meta-analyses and descriptive systematic review were performed. RESULTS The search identified 420 articles, of which 9 studies included in meta-analysis and 14 studies included in descriptive systematic review. Postoperative flap volume maintenance rate is used to represent the volume change. The pooled mean postoperative flap volume maintenance rate was 62.82 % for soft tissue flap (95 %CI: 58.83 to 66.82, p = 0.076, I2=56.3 %) and 85.96 % for bone flap (95 %CI: 84.19 to 87.73, p = 0.274, I2=20.4 %). Weight loss, muscle atrophy, and decreased serum albumin levels are risk factors for postoperative volume reduction of soft tissue flaps. The bone resorption rate of bone flaps in women is higher than that in men. CONCLUSION When designing microvascular free flaps for oral and maxillofacial surgery, soft tissue flaps should consider an anticipated postoperative shrinkage of 37 %, while bone flaps should consider an anticipated postoperative shrinkage of 14 %.
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Affiliation(s)
- Lei-Ming Cao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Zheng-Ye Kuo
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Yi-Fu Yu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Jun Jia
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; Department of Oral & Maxillofacial - Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Bing Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; Department of Oral & Maxillofacial - Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Lin-Lin Bu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; Department of Oral & Maxillofacial - Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
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Utsunomiya H, Tanaka R, Akamine S, Kusano T, Kuroki T, Kadomatsu K. Longitudinal Volume Assessment of Reconstructed Breast Using Three-Dimensional Measurement: How Do DIEP and LD Flap Change Immediately after Surgery? Indian J Plast Surg 2024; 57:99-105. [PMID: 38774730 PMCID: PMC11105820 DOI: 10.1055/s-0044-1781447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024] Open
Abstract
Background The deep inferior epigastric perforator (DIEP) and latissimus dorsi (LD) flaps are two widely used autologous breast reconstructions. Despite studies on flap-volume changes, the time of the first measurement is not immediately after surgery. Therefore, this study aimed to investigate the change in volume over time from the immediate postoperative period using a three-dimensional (3D) scanner. Methods Patients who underwent breast reconstruction with a DIEP or LD flap between October 2019 and December 2020 at Showa University Koto Toyosu Hospital were included. The Kinect 3D scanner was used to measure the reconstructed and healthy breast volumes immediately after surgery and at 1, 3, 6, and 12 months. The control group was the healthy side, and the volumes obtained at each time point and ratios (to the immediate postoperative period) were calculated and analyzed using a linear mixed model. Results Of the 25 patients and 26 breasts examined, the postoperative increase in volume ratios was statistically significant in the DIEP flap group, except for the sixth month, but decreased significantly in the LD group. Compared with the control group, the volume ratio was significantly higher up to 3 months in the DIEP flap group and decreased significantly after 3 months in the LD flap group. Conclusions The volume of the LD flap continued to decrease immediately after surgery, whereas the volume of the DIEP flap increased by 10% up to 1M. Therefore, this increase in volume should be taken into consideration in studies where the initial measurements were not taken immediately after surgery.
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Affiliation(s)
- Hiroki Utsunomiya
- Department of Surgery–Plastic Surgery, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Ryutaro Tanaka
- Department of Surgery–Plastic Surgery, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Shuryo Akamine
- Department of Surgery–Plastic Surgery, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | | | - Tomoaki Kuroki
- Department of Plastic and Reconstructive Surgery, Showa University Hospital, Tokyo, Japan
| | - Koichi Kadomatsu
- Department of Plastic and Reconstructive Surgery, Showa University Fujigaoka Hospital, Tokyo, Japan
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Thoenissen P, Najafi R, Sader R, Ghanaati S. Volume reduction of vascularized flaps in the field of cranio-maxillofacial surgery: A narrative-style review. J Craniomaxillofac Surg 2024; 52:203-211. [PMID: 38135647 DOI: 10.1016/j.jcms.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 10/15/2023] [Accepted: 12/10/2023] [Indexed: 12/24/2023] Open
Affiliation(s)
- Philipp Thoenissen
- Clinic for Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Goethe University, University Hospital Frankfurt, Frankfurt/Main, Germany.
| | - Ramin Najafi
- Clinic for Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Goethe University, University Hospital Frankfurt, Frankfurt/Main, Germany
| | - Robert Sader
- Clinic for Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Goethe University, University Hospital Frankfurt, Frankfurt/Main, Germany
| | - Shahram Ghanaati
- Clinic for Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Goethe University, University Hospital Frankfurt, Frankfurt/Main, Germany
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Wang SJ, Shen SY, Lin B, Wang F, Yang HY. Factors affecting postoperative sleep quality of patients undergoing flap transfer for head and neck reconstruction. Oral Oncol 2022; 127:105804. [DOI: 10.1016/j.oraloncology.2022.105804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/11/2022] [Accepted: 02/28/2022] [Indexed: 11/28/2022]
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Yamazaki M, Suzuki T, Hiraga C, Yoshida Y, Baba A, Saitou H, Ogane S, Fujii T, Takano M, Katakura A, Tanaka I, Nomura T, Takano N. Effect of postoperative radiotherapy for free flap volume changing after tongue reconstruction. Oral Radiol 2021; 37:518-523. [PMID: 33184774 DOI: 10.1007/s11282-020-00489-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 10/22/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the effect of postoperative radiotherapy (RT) on temporal volume changes with a cutaneous free flap (CF) and a myocutaneous free flap (MCF). METHODS The subjects were 24 men and 11 women (mean age, 50.5 ± 15.5 years) with tongue or floor of mouth cancer. Twenty-seven cases of CF and eight cases of MCF were selected. The flap volume change of the reconstructed tongue was calculated using computed tomography (CT) images taken immediately and at one year postoperatively using the DICOM image processing software OsiriX®. RESULTS The reduction rate in flap volume at one year postoperatively was 82.0 ± 15% in CF without RT, 70.3 ± 26.1% in CF with RT, 88.5 ± 14.7% in MCF without RT, and 99.5 ± 16% in MCF with RT. The MCF volume was significantly higher compared to the CF volume. Although postoperative RT reduced the CF volume by 30%, there was only a slight reduction in the MCF volume. CONCLUSIONS We evaluated the effect of postoperative RT on volume reduction in 35 cases of the reconstructed tongue with CF and MCF using a computer-assisted volume rendering technique. In this study, the effect of RT on volume reduction was different between the CF and MCF.
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Affiliation(s)
- Masae Yamazaki
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Taiki Suzuki
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan.
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan.
| | - Chiho Hiraga
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Yoshifumi Yoshida
- Department of Oral Medicine, Hospital Dentistry, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Akira Baba
- Department of Radiology, The Jikei University School of Medicine and University Hospital, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo, 1058461, Japan
| | - Hirokazu Saitou
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Satoru Ogane
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Takako Fujii
- Department of Plastic Surgery, Tokyo Dental College Ichikawa General Hospital, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Masayuki Takano
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, 2-9-18, Kanda-Misakicho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Akira Katakura
- Department of Oral Pathological Science and Surgery, Tokyo Dental College, 2-9-18, Kanda-Misakicho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Ichiro Tanaka
- Department of Plastic Surgery, Tokyo Dental College Ichikawa General Hospital, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Takeshi Nomura
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Nobuo Takano
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
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Changes in the size of the Distal Phalanx included in wrap-around flap and in the flap circumference for finger and thumb reconstruction. J Plast Reconstr Aesthet Surg 2021; 74:2776-2820. [PMID: 34176745 DOI: 10.1016/j.bjps.2021.05.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 04/24/2021] [Accepted: 05/27/2021] [Indexed: 11/21/2022]
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Wang SM, Yin SC, Su XZ, Xu Q, Liu YH, Xu ZF. Magnitude of radial forearm free flaps and factors associated with loss of volume in oral cancer reconstructive surgery: Prospective study. Head Neck 2021; 43:2405-2413. [PMID: 33847445 DOI: 10.1002/hed.26704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/23/2021] [Accepted: 03/30/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Adequate flap volume is key to maintaining oral function after oral cancer surgery. This study aimed to evaluate changes in radial forearm free flap (RFFF) volumes after 1 year of follow-up following ablative tumor surgery in the head and neck. METHODS A prospective study that recorded the clinical data of 20 patients with head and neck cancer who underwent RFFF reconstruction. Magnetic resonance (MR) and Mimics Research 19.0 software were used to measure the RFFF volumes at 1, 3, 6, and 12 postoperative months. RESULTS Compared with one postoperative month, the RFFF volume decreased by 15.5%, 29.4%, and 42.0% at 3, 6, and 12 months, respectively, after surgery. A significant positive correlation between postoperative radiotherapy and RFFF volume changes was detected. CONCLUSION The volume of RFFF decreases with time. It is recommended to use overcorrection, with a 40% increase in RFFF volume, to reconstruct head and neck tumor-related defects.
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Affiliation(s)
- Si-Min Wang
- Department of Oral Maxillofacial-Head and Neck Surgery, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China
| | - Shou-Cheng Yin
- Department of Oral Maxillofacial-Head and Neck Surgery, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China
| | - Xing-Zhou Su
- Department of Oral Maxillofacial-Head and Neck Surgery, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China
| | - Qiang Xu
- Department of Oral Maxillofacial-Head and Neck Surgery, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China
| | - Yi-Hao Liu
- Department of Oral Maxillofacial-Head and Neck Surgery, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China
| | - Zhong-Fei Xu
- Department of Oral Maxillofacial-Head and Neck Surgery, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China
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Factors Affecting Volume Change of Anterolateral Thigh Flap in Head and Neck Defect Reconstruction. J Oral Maxillofac Surg 2020; 78:2090-2098. [DOI: 10.1016/j.joms.2020.06.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/09/2020] [Accepted: 06/09/2020] [Indexed: 11/22/2022]
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Feasibility of virtual surgical simulation in the head and neck region for soft tissue reconstruction using free flap: a comparison of preoperative and postoperative volume measurement. Int J Oral Maxillofac Surg 2020; 50:316-322. [PMID: 32826125 DOI: 10.1016/j.ijom.2020.07.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 05/25/2020] [Accepted: 07/22/2020] [Indexed: 01/17/2023]
Abstract
In the head and neck region, preoperative evaluation of the free flap volume is challenging. The current study validated preoperative three-dimensional (3D) virtual surgical simulation for soft tissue reconstruction by assessing flap volume and evaluated fat and muscle volume changes at follow-up in 13 head and neck cancer patients undergoing anterolateral craniofacial resection. Patients received 3D virtual surgical simulation, and the volume of the planned defects was estimated by surgical simulation. Following en bloc resection of the tumor, the defect in the skull base was covered using a rectus abdominis myocutaneous flap. Following surgery, computed tomography scans were acquired at day 1 and at 6 and 12 months. Virtual planned defect was on average 227 ml (range, 154-315) and was 10% smaller than the actual flap volume in patients without skin involvement of the tumor. Between day 1 and 12 months post-surgery, the volume of fat and muscle tissue in the free flap dropped by 9% and 58%, respectively. Our results indicate that 3D virtual surgical simulation provides essential information in determining the accurate volume of the required free flap for surgical defect repair and may thus help improve surgical planning and functional and esthetic outcome.
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Liang KY, Breen MS, Tracy JC, Vaezi AE. Submandibular gland flap for reconstruction after parotidectomy. Laryngoscope 2020; 130:E155-E162. [DOI: 10.1002/lary.28037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 03/15/2019] [Accepted: 04/11/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Kevin Y. Liang
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Massachusetts Medical School Worcester Massachusetts U.S.A
| | - Matthew S. Breen
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Massachusetts Medical School Worcester Massachusetts U.S.A
| | - Jeremiah C. Tracy
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Massachusetts Medical School Worcester Massachusetts U.S.A
| | - Alec E. Vaezi
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Massachusetts Medical School Worcester Massachusetts U.S.A
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Long-Term Serial Measurement of Muscle Volume in TRAM Flaps Using the Eclipse Treatment Planning System. Plast Reconstr Surg 2019; 143:1137e-1141e. [DOI: 10.1097/prs.0000000000005609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Akashi M, Kusumoto J, Sakakibara A, Hashikawa K, Furudoi S, Komori T. Literature Review of Criteria for Defining Recipient-Site Infection after Oral Oncologic Surgery with Simultaneous Reconstruction. Surg Infect (Larchmt) 2017; 18:755-764. [PMID: 28792850 DOI: 10.1089/sur.2017.101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The lack of uniformity of criteria for defining recipient-site infection after oral oncologic surgery with simultaneous reconstruction is problematic despite numerous studies on this issue. This study aimed to investigate the difference in the criteria for defining recipient-site infection after oral oncologic surgery with reconstruction. METHODS A Medline search was performed via PUBMED using the following combinations of key terms that were tagged in the title, abstract, or both: "surgical site infection-head neck," "surgical site infection-oral cancer," "antibiotic prophylaxis-head neck," and "surgical site infection-oral carcinoma." Search results were filtered between 2005 and 2017. Articles in which there was no mention of the criteria for definition of surgical-site infection were excluded. RESULTS The number of articles that met the inclusion criteria was 24. The lack of uniformity in the criteria for defining recipient-site infection in each article appeared to be attributable mainly to differences in whether an orocutaneous fistula and superficial incisional infection were regarded as recipient-site infection. CONCLUSION Reconsideration of the categorization of orocutaneous fistula as infection, regardless of the etiology, and differentiation of superficial and deep incisional infections are necessary for correct assessment of recipient-site infection in oral oncologic surgery.
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Affiliation(s)
- Masaya Akashi
- 1 Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine , Kobe, Japan
| | - Junya Kusumoto
- 1 Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine , Kobe, Japan
| | - Akiko Sakakibara
- 1 Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine , Kobe, Japan
| | - Kazunobu Hashikawa
- 2 Department of Plastic Surgery, Kobe University Graduate School of Medicine , Kobe, Japan
| | - Shungo Furudoi
- 1 Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine , Kobe, Japan
| | - Takahide Komori
- 1 Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine , Kobe, Japan
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Kimura M, Takada K, Ishibashi K, Ohto H, Shibata A, Yamada H, Nishiwaki S, Naganawa Y, Umemura M. Quantitative analysis of chronological changes in the volume of flaps used for reconstruction of oral cavity defects. J Oral Sci 2017; 59:499-503. [DOI: 10.2334/josnusd.16-0683] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Masashi Kimura
- Department of Oral and Maxillofacial Surgery, Ogaki Municipal Hospital
| | - Ken Takada
- Department of Medical Technology, Ogaki Municipal Hospital
| | | | - Hiroyuki Ohto
- Department of Oral and Maxillofacial Surgery, Ogaki Municipal Hospital
| | - Akio Shibata
- Department of Oral and Maxillofacial Surgery, Ogaki Municipal Hospital
| | - Hiroki Yamada
- Department of Oral and Maxillofacial Surgery, Ogaki Municipal Hospital
| | - Shusuke Nishiwaki
- Department of Oral and Maxillofacial Surgery, Ogaki Municipal Hospital
| | | | - Masahiro Umemura
- Department of Oral and Maxillofacial Surgery, Ogaki Municipal Hospital
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