巻号一覧
30 巻 (1990)
- 4 号 p. 233-
- 3 号 p. 185-
- 2 号 p. 137-
- 1Supplement 号 p. 71-
- 1 号 p. 1-
30 巻, 3 号
選択された号の論文の6件中1～6を表示しています
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―手術後の下顎頭の形態変化と下顎頭の位置変化―細木 秀彦, 高木 康里, 岩崎 裕一, 上村 修三郎, 天真 覚, 弘田 克彦, 河田 照茂, 吉田 秀夫, 佐藤 光信1990 年 30 巻 3 号 p. 185-191
発行日: 1990/12/25
公開日: 2011/09/05
ジャーナル フリーA mode of the bony structural changes of the condylar heads, the position of the condyle within the fossa and their relationships were analysed on the selected lateral temporomandibular joint (TMJ) tomograms of 14 patients operated upon with Dal Pont-Obwegeser method for the mandibular prognathism.
Comparable tomograms were taken prior to surgery and immediately after surgery, approximately 3, 6, and 12 months after surgery.
Out of 28 condylar heads, 10 condylar heads (35.7%) underwent structural changes. Double contour formation at the posterior and superior articular surface of the condylar head was observed in 5, erosive bony changes at the anterior and superior or posterior and superior surface was found in 2 and concavity formation at the posterior and superior articular surface was in 3 condylar heads. Antero-inferior or posterior displacement of the condylar heads among the tomograms, immediately after surgical intervention and in follow-up period, was indicated in 12 TMJs (42.9%).
The incidence of structural changes of the condylar heads were correlated with the displacement of the condylar head between the pre- and post-operation tomograms by chi-square test (p<0.05).抄録全体を表示PDF形式でダウンロード (3837K) -
末永 重明1990 年 30 巻 3 号 p. 192-210
発行日: 1990/12/25
公開日: 2011/09/05
ジャーナル フリーThe purpose of this study is to evaluate internal derangements of the temporomandibular joint radiographically by Computed Radiography (CR).
CR system, which uses a process known as scanning laser stimulated luminescence, made it possible to show the soft tissue images as well as the bony structures, owing to wide latitude of Imaging Plate (IP) and image processing.
The following results were obtained:
1) The images of TMJ were obtained clearly by a tomographic angle of 16° (spiral movement) and collimating to a 5cm diameter at the IP's surface. The spatial frequency enhanced imge (0.75c/mm) which emphasized edge effect were clearer than the gradient enhanced image.
2) A comparison of the disk images between arthrogram and CR in 10 cases was performed. In six out of seven cases, CR images gave signs of the anterior disk displacement that was subsequently confirmed with arthrograms, while three others hardly showed the disk images in CR which were demonstrated arthrographically as normal joints.
3) In the CR analysis of 176 cases (244 joints), the disk images were divided into 3 patterns: Type A similar to anterior disk displacement with reduction, Type B to without reduction and No abnormality detected to no anterior displacement. The disk abnormalities such as Type A and Type B were seen in about one half of all joints.
4) In the correlation between clinical symptoms and the disk images, Type A was definitely associated with clicking and Type B with limitation of opening. Bony changes were predominant in cases which showed Type B group than other groups.
5) With regard to follow-up examination of 36 cases (50 joints), improved and advanced cases were seen in 15 (30%) and 9 joints (18%) respectively. 26 joints (52%) remained unchanged. The position of mandibular head to fossa changed from posterior to central, anterior and inferior in improved cases.
From these results, it was suggested that CR was valuable to diagnose internal derangements as a non-invasive method, and further, has provided useful informations for treatment planning and follow-up examinations.抄録全体を表示PDF形式でダウンロード (12381K) -
―下顎頭後面の陥凹について―上村 修三郎, 岩崎 裕一, 細木 秀彦, 岩本 泰容, 高木 康里, 佐藤 郁夫, 福富 茂, 前田 直樹, 正田 二郎, 明石 典子, ...1990 年 30 巻 3 号 p. 211-218
発行日: 1990/12/25
公開日: 2011/09/05
ジャーナル フリーA concavity has been sometimes found on the posterior bony surface of the condylar head of the patients with TMJ dysfunction by lateral TMJ radiography. In order to define the meaning the radiographic sign indicates, incidence by age group and location of the concavity were investigated on the selected lateral TMJ tomograms of 159 patients with TMJ dysfunction.
With an incidence of about 30%, the concavity was found on the condylar head of the patients, evenly in every age group. The result indicated that the concavity was not merely a aging, but probably an adaptive change in the patients with TMJ dysfunction.
Almost all of the concavities located at the upper half of the posterior surface of the condylar head and about 40% of them was opposite to the posterosuperior wall of the articular fossa and 60% to the postglenoid process, in the closed mouth position, though the bony outer surfaces of them were rather not in paralell with each other.
In relation to the articular eminences, at the maximum open mouth position in patients without locking, about one third of concavities (14TMJs) faced to them, as if they were affected by each other, putting a meniscus between them. Another one third translated anterosuperiorly beyond the apex of the articular eminences. However, it was not to be hard to suppose that the condylar head was scraped out by the articular eminence when it returned back into the articular fossa. Remain one third had no interrelations with the articular eminences.
In the present study, it was suggested that the concavity on the posterior bony surface of the condylar head was probably an adaptive change to abnormal jaw movements of the patients with TMJ dysfunction, and some might be formed in relation to the anterior slope of the articular eminence or tuberculum, locating at the level next to the top of condylar head.抄録全体を表示PDF形式でダウンロード (2659K) -
1990 年 30 巻 3 号 p. 219-220
発行日: 1990/12/25
公開日: 2011/09/05
ジャーナル フリーPDF形式でダウンロード (237K) -
1990 年 30 巻 3 号 p. 221-231
発行日: 1990/12/25
公開日: 2011/09/05
ジャーナル フリーPDF形式でダウンロード (1474K) -
1990 年 30 巻 3 号 p. e1
発行日: 1990年
公開日: 2011/09/05
ジャーナル フリーPDF形式でダウンロード (53K)
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