Souichi Yanamoto
Nagasaki University
AnatomyCancerInternal medicineSurgeryPathologyOncologyRetrospective cohort studyDentistryImmunohistochemistryBiopsyCarcinomaOsteonecrosis of the jawMetastasisTongueOrthodonticsBasal cellCancer researchMedicineBiologyGastroenterology
183Publications
21H-index
1,425Citations
Publications 188
Newest
#1Sakiko Soutome (Nagasaki University)H-Index: 10
#2Mitsunobu Otsuru (Nagasaki University)
Last. Masahiro Umeda (Nagasaki University)H-Index: 17
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Tooth extraction has been avoided since it has been considered a major risk factor for medication-related osteonecrosis of the jaw (MRONJ). However, MRONJ may also develop from tooth that is an infection source. This study aimed to clarify whether tooth extraction is a risk factor for the development of MRONJ in cancer patients receiving bone-modifying agents (BMAs). This retrospective observational study included 189 patients (361 jaws) from two hospitals. The risk factors of MRONJ were identif...
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#1Yuki Sakamoto (Nagasaki University)H-Index: 9
#2Souichi Yanamoto (Nagasaki University)H-Index: 21
Last. Masahiro Umeda (Nagasaki University)H-Index: 17
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The success rate of vascularized free flap transplantation in head and neck oncologic surgery is high, ranging from 94% to 98.8%; however, flap necrosis sometimes occurs after surgery. When vessel-related complications occur, flap necrosis proceeds rapidly. Thus, flap monitoring after surgery is especially important. We recently treated two patients with flap-related complications. A vesicle appeared on the surface of the flap and enlarged within a short time; the flap’s color changed to purple,...
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#1Kohei Okuyama (Nagasaki University)H-Index: 6
#2Saki Hayashida (Nagasaki University)H-Index: 10
Last. Masahiro Umeda (Nagasaki University)H-Index: 17
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Abstract Background/purpose Because the anatomy and the nature of the bone tissue between the mandible and maxilla are largely different, more site-specific studies are required to improve the healing rate on medication-related osteonecrosis of the jaw (MRONJ). The present study assessed maxillary MRONJ that was treated by surgery to understand its clinical characteristics, and to identify critical factors that influenced outcomes. Materials and methods The medical records of 54 patients with ma...
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#1Shunsuke Sawada (Kansai Medical University)H-Index: 6
#2Yuka Kojima (Kansai Medical University)H-Index: 9
Last. Hiroshi Iwai (Kansai Medical University)H-Index: 16
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Abstract Objectives Medication-related osteonecrosis of the jaw (MRONJ) of the maxilla often accompanies maxillary sinusitis. This study aimed to investigate the treatment and outcome of maxillary sinusitis associated with maxillary MRONJ. Methods This is a retrospective observational study. Among 68 patients with MRONJ of the maxilla undergoing surgical treatment at two university hospitals between 2012 and 2018, 31 patients with accompanying maxillary sinusitis were enrolled in the study. The ...
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#1Mitsunobu OtsuruH-Index: 11
Last. Masahiro UmedaH-Index: 20
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#1Mitsunobu OtsuruH-Index: 11
#2Sakiko SoutomeH-Index: 1
Last. Masahiro UmedaH-Index: 20
view all 8 authors...
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#1Satoshi Rokutanda (Nagasaki University)H-Index: 10
#2Shin-ichi Yamada (Shinshu University)H-Index: 18
Last. Masahiro Umeda (Nagasaki University)H-Index: 17
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Intraoral vertical ramus osteotomy (IVRO) is used to treat mandibular prognathism and temporomandibular disorders. However, the improvement of temporomandibular disorders after IVRO is considered to be due to the anterior and downward movement of the mandibular condyle, which may lead to condylar sag, and in the worst case, condylar luxation. In this retrospective cohort study, we examined factors potentially associated with condylar sag. Univariate analysis indicated that condylar sag was signi...
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#1Sakiko Soutome (Nagasaki University)H-Index: 10
#2Mitsunobu Otsuru (Nagasaki University)
Last. Toshiyuki Saito (Nagasaki University)H-Index: 25
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Purpose We previously reported that the periosteal reaction (PR) in medication-related osteonecrosis of the jaw (MRONJ) is a poor prognostic factor in surgical cases, but it is not clear how PR changes during conservative therapy. The purpose of this retrospective study was to compare computed tomography (CT) findings at the first visit and during follow-up visits in MRONJ patients subjected to conservative therapy and to investigate factors associated with the exacerbation of PR during conserva...
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#1Nishizaki Hitomi (Kanagawa Dental College)
#2Morimoto Yoshinari (Kanagawa Dental College)
Last. Yutaka Imai (Dokkyo Medical University)H-Index: 1
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The aim of this study was to investigate the awareness and experience, among dental practitioners, of adverse events resulting from dental treatment of patients undergoing therapy with drugs that affect the immune system [angiogenesis inhibitors, biological agents, immunosuppressants, and disease-modifying anti-rheumatic drugs (DMARDs)]. For this purpose, a nationwide questionnaire survey was conducted. Questionnaires were sent to 2,050 dentists, of which 206 (10.1%) were completed and returned....
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#1Yoshihide Ota (Tokai University)H-Index: 17
#2Tadahide Noguchi (Jichi Medical University)H-Index: 1
Last. Tadaaki Kirita (Nara Medical University)H-Index: 34
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For doctors and other medical staff treating oral cancer, it is necessary to standardize the basic concepts and rules for oral cancer to achieve progress in its treatment, research, and diagnosis. Oral cancer is an integral part of head and neck cancer and is treated in accordance with the general rules for head and neck cancer. However, detailed rules based on the specific characteristics of oral cancer are essential. The objective of this article was to contribute to the development of the dia...
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