九州大学 研究者情報
山田 朋弘(やまだ ともひろ) データ更新日:2022.06.05

准教授 /  歯学研究院 歯学部門 口腔顎顔面病態学

1. Yamada T, Anantanarayanan P, Mori Y, Presurgical simulation in oral and maxillofacial surgery, risk management and prediction of appearance., 14th World Congress of The Cleft Lip and Palate Foundation -CLEFT OSAKA 2022-, 2022.04.
2. 山田 朋弘, 後 信, 堀 智恵, 柏崎 晴彦, 西村 英紀, 和田 尚久, 中村 雅史,
九州大学病院における歯科治療に伴う合併症の傾向と今後の課題, 第16回医療の質・安全学会, 2021.11.
3. 中島 康経, 山田 朋弘, 杉山 悟郎, 大山 順子, 鎌田 裕, 森 悦秀,
顎矯正手術における術後、悪心嘔吐に関する危険因子の臨床的検討, 第31回日本顎変形症学会総会・学術大会, 2021.06.
4. 長谷川 幸代, 田尻 姿穂, 光安 岳志, 鮒田 亜実, 杉山 悟朗, 大山 順子, 山田 朋弘, 緒方 祐子, 中村 誠司, 高橋 一郎, 森 悦秀, コロナ禍における口唇口蓋裂患者に対する遠隔言語訓練, 第45回日本口蓋裂学会総会・学術大会, 2021.05.
5. 炭本 雄基, 山田 朋弘, 吉濱 直哉, 大山 順子, 杉山 悟朗, 今城 育美, 田尻 姿穂, 鎌田 裕, 春山 直人, 野村 俊介, 野口 健志, 高橋 一郎, 森 悦秀, 顎裂患者に対する粘膜移植を併用した口腔前庭拡張術の有用性, 第45回日本口蓋裂学会総会・学術大会, 2021.05.
6. 忽那 重彦, 矢内 雄太, 安田 光佑, 藤永 貴大, 杉山 悟郎, 石井 広太郎, 山田 朋弘, 森 悦秀, 当科における咀嚼筋腱・腱膜過形成症8症例の臨床的検討, 第75回日本口腔科学会総会, 2022.05.
7. 山田朋弘, 耳前切開による下顎骨アプローチの有用性, 第64回日本口腔外科学会総会, 2020.10.
8. 山田朋弘、中島 梓、杉山悟郎、安田、光佑、Safieh Al Bougha、石井広太郎、高橋一郎、森 悦秀 , 下顎非対称を伴う骨格性下顎前突症患者における咬筋特性に関する研究, 第30回日本顎変形症学会総会, 2020.06.
9. Yamada T, Sugiyama G, Mori Y, Orthognarthic surgery in the consistent treatment protocol of cleft lip and palate., 13th International Cleft Lip and Palate Foundation, 2019.07, Cleft lip and palate is treated in the consistent treatment protocol, and consideration for growth of the jaw is generally taken. Therefore, jaw deformity due to the maxillary undergrowth tends to decrease in recent years. However, malocclusion and patient-specific jaw deformities sometimes occur due to sagittal, vertical and horizontal undergrowth of maxilla. In addition, constriction of maxillary dentition, lingual inclination of the maxillary incisor, inner and posterior displacement of the minor maxillary segment are noted, and displacement of the mandible can be associated with asymmetry of the maxillary dentition. As a result, open bite and/or facial asymmetry as well as mandibular prognathism are often recognized. In the choice of technique, care must be taken. For example, despite maxillary anterior positioning is essential, the posterior movement of the mandible alone may cause a shortage of oral cavity volume for containing the tongue or a constriction of the airway, which may lead to post-operative dysfunction. If the maxilla is moved forward, the soft palate may also be pulled forward, resulting in nasopharyngeal insufficiency. Furthermore, it is necessary to keep in mind the tension in the relapsed direction due to scarring and the lack of blood flow.
Therefore, in our hospital, in the case of mild prognathism or asymmetry of the mandible, which does not require forward movement of the upper jaw, posterior movement of the mandible alone, and two-jaw osteotomy if the amount of forward movement of the maxilla is within 5 mm. And distraction osteogenesis (DO) of the maxilla is often performed when maxillary movement of more than 5 mm is required. In DO, internal fixation device are sometimes used, but due to the degree of freedom of movement direction and the stability of the result, we mainly use the external fixation device, RED system. In order to minimize the influence on nasopharyngeal function, maxillary anterior segment distraction osteogenesis (MASDO) is considered useful.
With these treatment strategies, aimed correction for jaw deformities can be generally achieved, and by correcting the facial skeleton to appropriate position, not only masticatory function but also aesthetic improvement is obtained. Furthermore, definitive lip repair usually becomes easy after orthognathic treatment of the maxilla for cleft lip patients..
10. 山田朋弘, 九州大学病院歯科部門における医療安全管理の体制と現状, 国際歯科医療安全機構 第12 回学術研修会, 2019.04.
11. Yamada T, Simulation for oral and maxillofacial surgery, especially prediction of soft tissue appearance., International Odonto-Stomatology Conference, 2018.12.
12. 山田朋弘, 顎変形症におけるトラブルシューティング, 第62回日本口腔外科学会総会, 2018.11.
13. 山田朋弘, 九州大学病院における小児口腔外科治療と医療連携, 第29回西日本臨床小児口腔外科学会, 2018.11.
14. Nakashima A, Yamada T, Mizunoya W, Nakano H, Yasuda M, Sugiyama G, Tajiri S, Sumida T, Mori Y, Relationship between jaw deformity and masseter muscle properties in mandibular asymmetry patients., 13th Asian conference of Oral and Maxillofacial Surgery, 2018.11, INTRODUCTION: Although the causes of jaw deformity are still unknown, there are many reports that muscle function and bone morphology are related. We have previously reported that there is a difference in mandibular ramus morphology between the deviated side and non-deviated side in patients with mandibular asymmetry. Also, it is known that in patients with a short face and deep bite, the masseter muscles are thick and have more Type II (fast twitch) fibers. In this study, we report on the relationship between muscle properties such as type, cross-sectional area and muscle density for mandibular asymmetry patients.
MATERIALS & METHODs: 31 female patients (mean age was 25.7 ± 8.6 years) who underwent sagittal split of ramus osteotomy (SSRO) for mandibular asymmetry from April 2015 to April 2017 were analyzed. Cases where the mandibular midline was deviated by more than 2 mm were defined as mandibular asymmetry. There were 5 cases of skeletal II and 26 cases of skeletal III. At the time of surgery, 0.5 cm3 of muscle tissue was sampled from the frontal margin of the masseter muscle. Sections were made in a direction perpendicular to the muscle bundle, immunohistochemical staining was performed with anti MyHC antibody and the fiber type was determined. Each type of fiber marker gene (MYH1,2,3,4,7) was further analyzed by real time PCR. The thickness, cross-sectional area and CT value of the masseter muscle were measured. Ten patients who underwent surgery for benign mandibular disease were selected as controls.
RESULTS: The masseter morphology of asymmetric mandibular patients was thinner on the non-deviated side than on the deviated side. In the skeletal II patients, the proportion of Type I (slow twitch) fibers was greater in the non-deviated side. On the other hand, in skeletal III patients, fewer Type II fibers were observed compared to the control group.
CONCLUSIONS: In patients with mandibular asymmetry, the masseter on the non-deviated side was thin and type I fibers were dominant, and a tendency similar to long face patients..
15. Imajo I, Yamada T, Ishii K, Sumida T, Kumamaru W, Kiyoshima T, Mori Y., Clinicopathological study of oral multiple cancers., 13th Asian conference of Oral and Maxillofacial Surgery, 2018.11.
16. Yamada T, Presurgical simulation on facial change in cleft lip repair using homologous modelling., 43rd Annual Conference of Association of Oral and Maxillofacial Surgeons of India, 2018.10.
17. 山田 朋弘、住田知樹、中野 旬之、鎌田 裕、安田 光佑、中島 梓、杉山 悟郎、森 悦秀, 口腔外科手術における術前シミュレーション -相同モデルによる術後顔貌予測-, 第62回日本口腔外科学会, 2017.10, 手術シミュレーションは手術の精度を高めるために最も重要な術前準備である。手術シミュレーションには、 インプラント埋入や深い埋伏歯、腫瘍摘出等に際し、神経や血管等の重要組織に配慮した手術アプローチの最適化を主眼としたものと、顎変形症や口唇裂等の形成手術において術後顔貌を予測し組織の移動様式を検討したものに分けられる。
18. 安田 光佑、中野 旬之、井上和也、山田 朋弘、住田知樹、森 悦秀, 新しい顔面3次元形状評価法の開発, 第62回日本口腔外科学会総会, 2017.10.
19. 中島 梓、山田 朋弘、中野 旬之、鎌田 裕、安田 光佑、杉山 悟郎、住田知樹、森 悦秀, 下顎非対称患者における顎変形と咬筋性状の関連性の検討, 第62回日本口腔外科学会総会, 2017.10.
20. 山田朋弘, 複雑な変形を伴う顎変形症に対する治療戦略 -SSROとLe Fort I型骨切り術で対応できない場合の工夫-, 第61回日本口腔外科学会総会, 2016.11.
21. 山田 朋弘, HIV陰性の高齢者に生じた口腔内Plasmablastic lymphomaの1例, 第33回日本口腔腫瘍学会総会・学術大会, 2015.01.
22. 山田 朋弘, Sagittal split ramus osteotomy, S.O.R.G. - Far East, Expert Meeting, 2014.09.
23. 山田 朋弘, 顔面非対称症例に対する顎矯正手術のポイント, 第59回日本口腔外科学会総会, 2014.10.