著者

野上 晋之介 山内 健介 金氏 毅 山本 哲彰 宮本 郁也 山下 善弘 高橋 哲

出版者

THE JAPANESE SOCIETY FOR JAW DEFORMITIES

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.21, no.3, pp.190-194, 2011-08-15 (Released:2012-01-24)

参考文献数

11

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The amount of postoperative bone resorption after genioplasty was studied in 13 patients. The subjects of this study were 4 patients who underwent genioplasty alone, and 5 who underwent genioplasty combined with other techniques for correcting skeletal Class II and Class III deformities.Large advancement genioplasties were performed on 13 patients by horizontal osteotomy of the inferior border of the mandible, with preservation of a musculoperiosteal pedicle to the advanced genial segment. Preoperative, immediate postoperative, and long-term follow-up lateral cephalometric radiographs were retrospectively analyzed to evaluate the osseous changes of the chin. We examined the correlation between bone resorption and the degree of advancement, the degree of mandible movement, the height of the genial segment, and the distance from the existing bone to the genial segment. The results showed a correlation between bone resorption and the distance from existing bone to the genial segment. This suggests that the supply of blood between existing bone and the genial segment has an influence on bone resorption.

著者

山田 大輔 東堀 紀尚 福岡 裕樹 鈴木 聖一 川元 龍夫 森山 啓司

出版者

THE JAPANESE SOCIETY FOR JAW DEFORMITIES

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.22, no.1, pp.12-19, 2012-04-15 (Released:2012-09-14)

参考文献数

28

被引用文献数

1 1

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Facial morphology improvements are obtained following two-jaw surgery in mandibular protrusion patients. Changing external nasal morphology does not always lead to good results in all patients. In this study, using 3-dimentional computed tomography (3D-CT), we examined the changes of external nasal morphology of patients who had undergone two-jaw surgery to correct mandibular protrusion. Seven adult patients (5 male; 2 female) who had been treated by two-jaw surgery associated with upward transposition of the posterior maxilla were enrolled in this study. 3D analysis software superimposed 3D-CTs of the pre-operative and post-operative stages (at least 6 months after surgery) on the hard tissue surfaces. We employed the 3D coordinate system constructed by Frankfort horizontal (FH) plane, the frontal plane incorporating the orbitals on both sides and the sagittal plane intersecting at the midpoint between the orbitals. After superimposition, soft tissue images of 3D-CT were reconstructed and changes in external nasal morphology were three-dimensionally analyzed. 3D geographical analysis, linear and angular measurements were performed for the most inferior points on the nasal alar (LBi, RBi) on bilateral sides, the most anterior point on the nose (Prn), the most anterior point on the columella of the nose (Cm), the most posterior superior point on the nasolabial curvature (Sn) and the most anterior point on the convexity of the upper lip (Vu). Correlation of hard tissue and soft tissue changes were statistically analyzed by Spearman's rank correlation analysis.LBi and RBi moved anterior according to the anterior movement of point A. Increase in distance of both LBi and RBi and angle of LBi-Prn-RBi were observed. We found significant increase in the area of external nasal aperture. Positive correlation was seen between the anterior movement of point A and the distance of LBi and RBi.These results imply that our superimposition of CT images using the 3D coordinate system are useful to compare soft tissue changes before and after surgery. Further investigation for more information about the factors that influence facial morphology changes is necessary since the changes may not be uniform due to the individual variety of soft tissue characterization, and the direction and amount of maxillary movement by Le Fort I osteotomy.

著者

小島 拓 芳澤 享子 小野 由起子 倉部 華奈 加納 浩之 齊藤 力 小林 正治

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.25, no.3, pp.234-240, 2015-08-15 (Released:2015-09-12)

参考文献数

21

被引用文献数

3

---

We present three cases in whom mental disorders appeared after orthognathic surgery.The first case was a 35-year-old female who had a history of depression. After the operation, a manic state appeared and she was diagnosed with bipolar disorder. Her medicine was changed from an antidepressant to a mood stabilizer, after which her mental condition stabilized.The second case was a 34-year-old male. He could not accept the appearance of his postoperative face, and it took about three months for him to finally accept his new appearance.The final case was a 37-year-old female. She could not accept the appearance of her postoperative face because it was not what she had expected. She began to complain about her face and became depressive, and was finally diagnosed with major depressive disorder. After administration of an antidepressant, her mental condition gradually improved.We must take into consideration the possibility that patients will develop mental disorders after orthognathic surgery, and adequate explanation and patient assessment before the operation are therefore important.

著者

小島 拓 長谷部 大地 加藤 祐介 倉部 華奈 船山 昭典 新美 奏恵 加納 浩之 齊藤 力 小林 正治

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.26, no.3, pp.237-242, 2016-08-15 (Released:2016-09-14)

参考文献数

22

被引用文献数

2 2

---

Peripheral facial nerve palsy following orthognathic surgery is a rare complication. We discuss the incidence of this complication, its possible causes, subsequent treatment and ultimate outcomes.A total of 910 patients underwent orthognathic surgery in our department during the period from 2001 to 2015. Five (0.55%) of those patients had peripheral facial nerve palsy postoperatively. The postoperative day when facial nerve palsy occurred ranged from day 1 to day 13. All of the cases were unilateral and included lip motility disturbance, difficulty in closing the eyes and inability to wrinkle the forehead. All of the patients received medication with an adrenocortical steroid and vitamin B12. Stellate ganglion block and physical therapy were also used for the patients who had moderate to severe facial nerve palsy. Complete recovery was achieved in all but one of the patients, in whom slight palsy remained. There were several possible causes of facial nerve palsy including abnormal bleeding, postoperative swelling, and handling of operating instruments.In conclusion, peripheral facial nerve palsy after orthognathic surgery is relatively rare. If it occurs, however, complete recovery can be expected in most cases.

著者

布田 花子 森田 修一 山田 秀樹 花田 晃治 齊藤 力 高木 律男

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.12, no.3, pp.85-93, 2002-12-15 (Released:2011-02-09)

参考文献数

16

被引用文献数

1

---

The purpose of this study was to investigate the changes of the soft tissue profile in the nose following Le Fort I osteotomy in skeletal Class III patients.The subjects were 30 females who underwent twojaw surgery to correct anterior reversed occlusion, and who were classified into three groups according to the directions of surgical displacement of the maxilla.1. Advancement-Impaction group (n=11)2. Advancement group (n=12)3. Advancement-Downgraft group (n=7)For each patient, lateral cephalograms, taken preoperatively and postoperatively, were traced and superimposed, and linear and angular measurements were obtained. And, alinasal width was measured on frontal facial photographs taken preoperatively and postoperatively. These data from the three groups were compared.The results were as follows:1. In the Advancement-Impaction group, Pronasale and Subnasale were displaced in the upward and forward direction after Le Fort I osteotomy.2. In the Advancement group, Pronasale and Subnasale were displaced in the forward direction after surgery.3. In the Advancement-Downgraft group, Pronasale was displaced in the forward direction, and Subnasale was displaced in the downward direction.4. Alinasal width was increased in the three groups with advancement of the maxilla.In conclusion, there were differences in the postoperative changes of the nose, with different movement of the maxilla.

著者

TSUYOSHI SUZUKI TATSUO KAWAMOTO DAISUKE YAMADA RYOUHEI KITAMURA NAOKO TOMINAGA HIROKI FUKUOKA KEIJI MORIYAMA

出版者

THE JAPANESE SOCIETY FOR JAW DEFORMITIES

雑誌

The Japanese Journal of Jaw Deformities (ISSN:09167048)

巻号頁・発行日

vol.20, no.3, pp.220-227, 2010-08-15 (Released:2012-03-16)

参考文献数

28

被引用文献数

5

---

The present study conducted a statistical survey of 1118 patients with jaw deformity who underwent surgical orthodontic treatment in the Section of Maxillofacial Orthognathics, Department of Orthodontics, Tokyo Medical and Dental University from 1980 to 2009.The results were as follows:1. There were 442 male and 676 female patients (ratio 1:1.5).2. The mean age at operation of all patients was 24.2 years old. The mean age has tended to increase in recent years.3. The most common condition was mandibular prognathism without other deformities of the jaw, accounting for 47.3% of the patients. Next was mandibular prognathism with asymmetry, accounting for 20.4%, and then mandibular prognathism with open bite, accounting for 14.1%.4. The most frequently used surgical procedure was sagittal split ramus osteotomy (SSRO), accounting for 64.0%. The combination of Le Fort I osteotomy and SSRO accounted for 21.0%.5. For bone fixation after SSRO, wire fixation, which used to be the most common method, has been almost completely replaced by screw or mini-plate fixation in recent years.

著者

古田 治彦 久保 誼修 堀内 薫 小渕 匡清 白数 力也

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.10, no.1, pp.81-87, 2000-04-15 (Released:2011-02-09)

参考文献数

16

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For surgical correction of masseteric muscle hypertrophy, Obwegeser-Beckers method, removal of the exostoses at the mandibular angle, is usually performed. However, it is difficult to obtain satisfactory esthetic results by this conventional method. In this paper, a new surgical technique to easily obtain good esthetic results is reported. This technique can remove exostosis at the mandibular ramus without damage to the inferior alveolar neurovascular bundle and surrounding tissue.The method is as follows:1. A Lindemann bar is used to cut through the exterior cortical plate of the ramus and the area of the antegonial notch. Then, a bone saw is used to cut through the cortical plate on an oblique line.2. A splitting chisel is directed and driven inward to the osteotomy line. The exterior cortical plate of the mandibular ramus is removed, and so, this portion has thin, facial esthetics which are improvable.

著者

大井 一浩 井上 農夫男 金子 真梨 道念 正樹 松下 和裕 山口 博雄 戸塚 靖則

出版者

THE JAPANESE SOCIETY FOR JAW DEFORMITIES

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.20, no.1, pp.1-7, 2010-04-15 (Released:2012-03-02)

参考文献数

26

被引用文献数

1

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The purpose of this study is to evaluate the incidence, risk factors and postoperative nausea and vomiting (PONV) in patients who underwent orthognathic surgery.The subjects were 139 patients aged 17-52 years (47 males and 92 females) who underwent orthognathic surgery in the Hokkaido University Hospital from January 2001 to December 2003. Ninety-four Sagittal splitting ramus osteotomy (SSRO), 34 Le Fort I osteotomy and SSRO (Le Fort I+SSRO), and 11 surgically assisted rapid palatal expansion (SARPE) were performed. Anesthesia was maintained with sevoflurane and nitrous oxide in oxygen. There were no cases of maxillomandibular fixation. The factors investigated included age, gender, type of surgery, amount of bleeding, operation time, anesthesia time, anesthesia induction drugs, fentanyl dose and incidence of PONV. A statistical study was performed using logistic regression analysis to confirm the statistical significance among age, gender, amount of bleeding, operation time, anesthesia time, difference of anesthesia induction drugs, fentanyl dose, and incidence of PONV. A Chi-square test for independence was used to confirm the statistical significance between the type of surgery and incidence of PONV. Differences were considered significant for a P<.05.Nausea was observed in 44.6% females and 17.1% males. The incidence of nausea was significantly higher in females. A significantly higher amount of vomiting was observed in 23.5% of Le Fort I+SSRO compared with 7.4% of SSRO and 9.1% of SARPE. Statistically significant differences for vomiting were also noted in the operation time and anesthesia time.

著者

葭葉 清香 代田 達夫 山口 徹太郎 新 真紀子 栗原 祐史 槇 宏太郎 新谷 悟

出版者

THE JAPANESE SOCIETY FOR JAW DEFORMITIES

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.23, no.1, pp.1-7, 2013-04-15 (Released:2013-05-13)

参考文献数

27

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In this study, we evaluated the usefulness of bioabsorbable poly-L-lactide (PLLA) mini-plates for bone fixation after Le Fort I osteotomy and bilateral sagittal split osteotomy (SSRO). The subjects were 19 patients, who received two-jaw surgery using titanium and PLLA mini-plates. Lateral cephalograms were taken before surgery (T1), immediately after surgery (T2), and more than six months after surgery (T3). Changes in the measurement points were statistically analyzed. There was no statistical difference in the postoperative skeletal difference between the two groups. The post-operative stability of PLLA mini-plates is comparable to that of titanium mini-plates. PLLA mini-plates are considered to be clinically useful.

著者

田中 愛子 府川 俊彦 小林 眞司 山崎 安晴 鳥飼 勝行

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.12, no.3, pp.103-112, 2002-12-15 (Released:2011-02-09)

参考文献数

16

被引用文献数

3

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We present a case of Crouzon disease treated by two-jaw surgery after a Le Fort III osteotomy and bone distraction.The patient was a 17-year, 1-month-old male with facial malformation and malocclusion.At the age of 17 years and 2 months, a Le Fort III osteotomy and bone distraction were performed for midface advancement. After this distraction procedure, orthodontic treatment began for secondary surgery to correct severe openbite, bimaxillary protrusion, and spaced arch.After a partial glossectomy was carried out, preoperative orthodontic treatment commenced. At the age of 19 years and 7 months, a Le Fort I osteotomy and sagittal split ramus osteotomies (two-jaw surgery) were carried out.After postoperative orthodontic treatment, occlusion and the facial profile were improved. Although some spaces developed, the occlusal results were almost preserved throughout the 17 month retention period.

著者

永井 格 伊藤 静代 白木 雅之 山岸 久也 米倉 宣幸 平塚 博義 小田島 哲世 小浜 源郁

雑誌

日本顎変形症学会雑誌 = The Japanese journal of jaw deformities (ISSN:09167048)

巻号頁・発行日

vol.6, no.2, pp.145-161, 1996-10-31

被引用文献数

11

著者

高橋 庄二郎

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.14, no.3, pp.153-169, 2004-12-15 (Released:2011-02-09)

参考文献数

44

被引用文献数

4 4

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Recently, there have been remarkable developments in the treatment of jaw deformities. Nowadays, surgical correction of jaw deformities is performed at maxillo-facial surgery clinics throughout Japan.This paper discusses the history of surgical treatment for correction of jaw deformities in Japan. It also discusses the rationale behind the author's introduction of the sagittal splitting method of the mandibular rami for treatment of mandibular prognathism, and reports the results of the first and second cases treated using this method in 1969. Then, it discusses various methods used by the author in orthognathic surgery. As a historical background, the development by Prof. Hugo L. Obwegeser of sagittal splitting of the mandibular rami and LeFort I osteotomy, which are among the most important procedures in orthognathic surgery, are introduced. The factors that have influenced the development of the treatment of jaw deformities in Japan are considered, and finally the challenges involved in the treatment of jaw deformities are discussed.

著者

宮本 裟也 佐藤 仁 栗原 祐史 田中 元博 稲田 大佳暢 堅田 凌悟 守谷 崇 安田 有沙 代田 達夫

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.31, no.4, pp.197-203, 2021 (Released:2021-12-22)

参考文献数

23

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Acromegaly is an endocrine disease caused by excessive secretion of growth hormone (GH) after the end of the growth period, due to a pituitary adenoma. Mandibular prognathism, tongue hypertrophy, and bulging of the eyebrow arch are observed in the maxillofacial region. We describe a case with acromegaly for which surgical orthodontic treatment was performed after excision of the pituitary adenoma. A 47-year-old woman who became aware of enlargement of the size of the hands and feet from 35 years old was diagnosed with acromegaly by the Department of Neurosurgery because of a high GH level and a pituitary tumor on MRI. In September 2014, chemotherapy was performed after tumor resection via the nasal cavity. In March 2016, she was referred to the Department of Orthodontics of our hospital for further examination and treatment of malocclusion. Overjet and overbite were −5.0mm and +2.5mm, respectively. The occlusal relationship of the molars was Angle class Ⅲ. Angular analysis of lateral cephalometric analysis showed SNA: 80.0°, SNB: 77.0°, ANB: 3.0°, and FMA: 37.9°. Mandibular prognathism was diagnosed based on a Wits appraisal of −7.1. Since there was no clinical activity of acromegaly and hypertrophy of the hard and soft tissues due to acromegaly had stopped, and serum insulin-like growth factor-1 was well controlled by chemotherapy, orthognathic treatment was started in April 2016 and bimaxillary surgery was performed in January 2019. The occlusal relationship was stable and there was no recurrence at 2 years after the surgery. Since acromegaly has various complications, it is necessary to create a treatment plan considering the complications, and to perform extended follow-up due to the potential for recurrence of the disease.

著者

上床 喜和子 須佐美 隆史 井口 隆人 大久保 和美 岡安 麻里 内野 夏子 髙橋 直子 松林 幸枝 阿部 雅修 末永 英之 森 良之 髙戸 毅

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.26, no.1, pp.26-36, 2016-04-15 (Released:2016-05-20)

参考文献数

32

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Acromegaly is caused by growth hormone excess owing to a pituitary adenoma after completion of growth and tends to lead to mandibular prognathism. In this paper, two patients with mandibular prognathism caused by acromegaly and treated by surgical-orthodontic treatment are reported. The first case was a 36-year-old male who was referred to our hospital to correct mandibular prognathism and malocclusion after resection of the tumor in the pituitary gland. The second case was a 26-year-old male who was referred from an orthodontic clinic for orthognathic surgery. He had not been diagnosed as acromegaly but a typical double-floor of the Turkish saddle was found in the lateral cephalogram. Blood tests revealed acromegaly. Surgical-orthodontic treatments were performed after resection of the pituitary adenoma and confirmation of normal level of blood growth hormone (GH) and somatomedin C. In both cases, multi-bracket appliances were worn and bimaxillary osteotomy (Le Fort I osteotomy for maxillary advancement and bilateral sagittal splitting ramus osteotomies for mandibular setback) was carried out to secure the intraoral space for the enlarged tongue. After post-surgical orthodontic treatment, the treatment results were good and stable in both cases. These cases showed that surgical-orthodontic treatment for patients with acromegaly after pituitary adenoma resection is reliable. The importance of careful examination of the craniofacial shape in patients with mandibular prognathism to detect acromegaly is emphasized.

著者

外木 守雄 有坂 岳大 塚本 裕介 佐藤 一道 山根 源之 大櫛 哲史 中島 庸也

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.17, no.1, pp.9-15, 2007-04-15 (Released:2011-02-09)

参考文献数

16

被引用文献数

10 7

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This study investigated risk factors for obstructive sleep apnea hypopnea syndrome (OSAHS) induced by orthognathic surgery for malocclusion, by analysis of preoperative and postoperative examination findings. In this first report, we discuss the relationship between the findings from the polysomnographic record and the direction of jaw movement during orthognathic surgery. The postoperative Apnea Hypopnea Index was significantly decreased in the group that underwent maxillaryadvancement with or without mandibular movement; however, there was no significant difference between the groups that underwent mandibular movement with and without maxillary movement. Mandibular morphology is frequently considered when evaluating the relationship between the maxillofacial structure and sleep-disordered breathing; our findings also indicated that maxillary morphology is an important factor. Hence, we advocate orthognathic surgery to treat malocclusion when necessary and to take sleep-disordered breathing into consideration. Additionally, we considered that the findings of this study provide important evaluation criteria for determining the indications for orthognathic surgery to treat OSAHS.

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.18, no.2, pp.107-112, 2008 (Released:2011-02-09)

著者

大町 浩史 原田 清 佐藤 昌 盛島 聖子 樺沢 勇司 丸岡 豊 小村 健

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.16, no.1, pp.8-11, 2006-04-15 (Released:2011-02-09)

参考文献数

10

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Soft tissue changes in the chin were compared between patients undergoing sagittal split ramus osteotomy (SSRO) for mandibular setback with and without reduction genioplasty. Twenty patients with symmetrical skeletal Class III malocclusion were examined. Twelve underwent SSRO alone (group I), and 8 underwent SSRO combined with reduction genioplasty (group II). Reduction genioplasty was performed by two horizontal osteotomies, removing the bony wedge, and posterosuperior movement of the inferior segment of the chin. Lateral cephalograms were obtained preoperatively and 6 months postoperatively. Pre- to postoperative changes in the positions of hard-tissue points (B-point [B], pogonion [Ng], and menton [Me]) and soft-tissue B-point [sB], soft-tissue pogonion [sPog], and menton [sMe] were measured on the cephalograms. The ratio of the soft tis-sue movement to the hard tissue movement was also calculated. Though superior movement of Me was significantly larger in group II than in group I, there were no significant differences in the superior movement ratios of sMe to Me between the two groups. However, the posterior movement ratio of sPog to Pog was significantly larger in group I than in group H. These results suggest that the reduction genioplasty performed by two horizontal osteotomies, removing the bony wedge, and posterosuperior movement of the inferior segment of the chin had little effect on the posterior movement of the chin. Therefore, in patients with skeletal class III malocclusion, reduction genioplasty should be applied mainly to vertical shortening of the chin.

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.23, no.4, pp.225-248, 2013-12-15 (Released:2014-01-09)

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.22, no.2, pp.101-118, 2012 (Released:2012-09-19)

著者

松崎 雅子 黒田 敬之 城戸 健一

出版者

特定非営利活動法人 日本顎変形症学会

雑誌

日本顎変形症学会雑誌 (ISSN:09167048)

巻号頁・発行日

vol.9, no.3, pp.149-156, 1999-12-15 (Released:2011-02-09)

参考文献数

19

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The purpose of this study was to investigate acoustically the influence of orthognathic surgery on the phonetic quality of patients with skeletal mandibular protrusion. Samples of speech sounds were collected from nine patients (seven females, two males) before and after orthognathic surgery.The psychoacoustic analysis was carried out by 24 examiners using the paired comparison in naturalness of the five different Japanese words.The acoustic analysis, based on the linear predictive coding (LPC), were applied to determine the lowest two local spectral peaks (Fl, F2) on the vowels. Fl and F2 were compared with the normal speakers, and the changes of Fl and F2 with orthognathic surgery were evaluated using 40 Japanese words.The results were as follows:1) The naturalness of speech has been improved in most patients after orthognathic surgery in the psychoacoustic analysis.2) Distribution of Fl and F2 in patients after surgery approximated that of normal speakers.3) The psychoacoustic and acoustic analyses have a significant correlation. It was suggested that improvement in naturalness of speech is associated with the changes of Fl and F2 by orthognathic surgery.