アブストラクト(46巻2号:神奈川歯学)

神奈川歯学

Japanese

Title : 頬骨歯槽稜の臨床解剖学的研究
Subtitle : 原著
Authors : 山内大典, 西尾和彦, 渡辺孝夫, 川口和子, 高橋常男
Authors(kana) :
Organization : 神奈川歯科大学人体構造学講座
Journal : 神奈川歯学
Volume : 46
Number : 2
Page : 168-174
Year/Month : 2011 / 12
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 【緒言】 インプラント治療が普及している. それに伴って上顎臼歯部高度吸収歯槽堤においてもインプラント治療の要望が高くなっている. そのような症例へのインプラント埋入法の1選択肢として上顎洞底挙上術がある. 本術式は上顎洞底にインプラント埋入のための骨造成を図る術式である1-5). 本術式の主要な処置は骨窓から挿入した器具の洞内操作で. 大部分は直視できない. その場合, 隣在歯を洞内器具操作の手術基点にすることが多い. しかし, 隣在歯がない症例ではそれにかわる手術基点が必要である. 上顎頬骨縫合および頬骨弓前方基部の隆起は解剖学的調査の計測基点として使われる. 頬骨歯槽稜は上顎骨外側表面にあって, 上顎洞の解剖と歯列の配列に関係すると言われる6,7). 今回, われわれは, 日本人乾燥頭蓋骨標本を使い頬骨歯槽稜の解剖学的調査およびパノラマエックス線写真により解析を行い, 上顎洞挙上術の手術基点として有用な解剖学的構造を検討した.
Practice : 歯科学
Keywords : 頬骨歯槽稜, パノラマ無名線, 上顎洞底挙上術

English

Title : Anatomical studies of zygomaticoalveolar crest for clinical use
Subtitle :
Authors : Daisuke YAMAUCHI, Kazuhiko NISHIO, Takao WATANABE, Kazuko KAWAGUCHI, Tsuneo TAKAHASHI
Authors(kana) :
Organization : Department of Anatomy, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 46
Number : 2
Page : 168-174
Year/Month : 2011 / 12
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract] The aim of this study is to investigate the anatomy of the zygomaticoalveolar crest, to analyze the findings in panoramic radiographs using human skulls, and to discuss its significance as a landmark for the maxillary sinus floor elevation procedure. Both sides of the maxilla in 22 Japanese dry skulls owned by K.D.C.Department Anatomy were observed anatomically. 1. The coronal view showing the outline from the zygomaticoalveolar crest to the anterior site of zygomatic arch was divided into 3 types. 2. The angle of the crest in the Frankfort horizontal plane was 81.4±4.7° on average. 3. Three anatomical landmarks at point ZAC (point crossing between the outline of the zygomaticoalveolar crest and the anterior line of the inferior temporal fossa), point M (inferior process at the anterior site of the zygomatic arch) and point S (inferior point of the zygomaticomaxillary suture) were identified. In every case, the position of point ZAC was located furthest inside. 4. The distance between point ZAC and M was 6.0±2.3mm, and between point M and S was 3.3±3.1mm. 5. Lead balls were placed at the 3 points. Panoramic radiographs were taken. The lowest point of the panoramic innominate line was identified. Panoramic radiograph measurements revealed that point ZAC was located 0.3±0.3mm anterior, 0.1±0.4mm lower than LPIL, and point M was 4.0±2.3mm posterior, 0.8±3.1mm lower. It was observed that point ZAC was closest to LPIL, compared to the other 2 points in the panoramic radiographs. Point ZAC is located in the surgical area of maxillary sinus floor elevation procedures and also can be seen in panoramic radiographs. In conclusion, it is useful as a landmark for sinus surgery when placing an implant.
Practice : Dentistry
Keywords :