• 한국어류학회지
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• 제9권1호
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• pp.130-140
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• 1997

한국산(韓國産) 납자루아과(亞科)에 속하는 각시붕어(Rhodues uyekii) 골격(骨格)의 주요 형태적 특징을 기재하고자 조사를 수행하였다. 본 조사에서 R. uyekii의 두골(頭骨), 척추골(脊椎骨), 지느러미 골격(骨格)을 조사였던 바, 두개부(頭蓋部)에 fontanell이 없으며, 상사골(上篩骨)의 전단에 돌기가 없고, 유리신경간극(遊離神經間棘)이 넓은 판상(板狀)이고, 상후두골(上後頭骨)은 높은 삼각형 형태의 돌기를 갖고 있으며, 제4 안하골(眼下骨)이 매우 축소 되어 있고, 미설골(尾舌骨)의 선단(先端)이 2분지(分枝)되고 수평판(水平板)과 수직판(垂直板)의 후방(後方)이 넓어지며 후연(後緣)이 돌출되는점, 견대부(肩帶部)에는 오훼골(烏喙骨) 구멍이 존재하지 않았고, 미기추전추체에 미신경골(尾神經骨)이 나타나지 않는 특징을 보였다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제37권2호
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• pp.114-121
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• 2011

Introduction: The aim of this study was to demonstrate that the simulation surgery on rapid prototype (RP) model, which is based on the 3-dimensional computed tomography (3D CT) data taken before surgery, has the same accuracy as traditional orthograthic surgery with an intermediate splint, using an optoelectronic tracking navigation system. Materials and Methods: Simulation surgery with the same treatment plan as the Le Fort I osteotomy on the patient was done on a RP model based on the 3D CT data of 12 patients who had undergone a Le Fort I osteotomy in the department of oral and maxillofacial surgery, Seoul National University Dental Hospital. The 12 distances between 4 points on the skull, such as both infraorbital foramen and both supraorbital foramen, and 3 points on maxilla, such as the contact point of both maxillary central incisors and mesiobuccal cuspal tip of both maxillary first molars, were tracked using an optoelectronic tracking navigation system. The distances before surgery were compared to evaluate the accuracy of the RP model and the distance changes of 3D CT image after surgery were compared with those of the RP model after simulation surgery. Results: A paired t-test revealed a significant difference between the distances in the 3D CT image and RP model before surgery.(P<0.0001) On the other hand, Pearson's correlation coefficient, 0.995, revealed a significant positive correlation between the distances.(P<0.0001) There was a significant difference between the change in the distance of the 3D CT image and RP model in before and after surgery.(P<0.05) The Pearson's correlation coefficient was 0.13844, indicating positive correlation.(P<0.1) Conclusion: Theses results suggest that the simulation surgery of a Le Fort I osteotomy using an optoelectronic tracking navigation system I s relatively accurate in comparing the pre-, and post-operative 3D CT data. Furthermore, the application of an optoelectronic tracking navigation system may be a predictable and efficient method in Le Fort I orthognathic surgery.

• 치위생과학회지
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• 제22권4호
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• pp.249-255
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• 2022

Background: Sexual dimorphism is important for sex determination in the field of forensics. However, sexual dimorphism is commonly assessed using cone beam computed tomography (CBCT) rather than three-dimensional (3D) modeling software; therefore, studies using a more accurate measurement approach are necessary. This study assessed the sexual dimorphism of the MS using a 3D modeling program to obtain information that could contribute to the fields of surgery and forensics. Methods: The CBCT data of 60 patients (age, 20~29 y; 30 males and 30 females) admitted to the Department of Orthodontics at the Dankook University School of Dentistry were provided in Digital Imaging and Communications in Medicine (DICOM) format. The left MS and right MS were modeled based on the DICOM files using the Mimics (version 22; Materialise, Leuven, Belgium) 3D program and converted to stereolithography (STL) files used to measure the width, length, and height of the MS, infraorbital foramen (IOF), right MS, and left MS. The average of three repeated measurements was calculated, and a reliability test was performed to ensure data reliability (Cronbach's α=0.618). A canonical discriminant analysis was performed using a standard approach (left: Box's M=0.096; right: Box's M=0.115). Results: Males had greater values for all parameters (MS width, MS length, MS height, IOF, right MS, left MS) than females. The discriminant analysis identified six independent variables (MS width, MS height, MS length, IOF, right MS, left MS) that could identify sex. The left MS and right MS correctly identified the sex of 81.7% and 71.7% of the patients, respectively, with the left MS having higher accuracy. Conclusion: This study confirmed that, for Korean individuals, the left MS has a better ability to identify sex than the right MS. These results may contribute to sex identification in the fields of surgery and forensics.

• 대한수의학회지
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• 제38권3호
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• pp.474-487
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• 1998

The present study was undertaken to investigate the morphological characteristics of trigeminal nerve in the Korean native goat by macroscopic methods. Trigeminal nerve was originated from the lateral side of pons, and extended shortly forward to form trigeminal ganglion at the opening of oval foramen. Thereafter this nerve was divided into maxillary, mandibular and ophthalmic nerve. Ophthalmic nerve gave off the zygomaticotemporal branch, frontal nerve, frontal sinus branch, and was continued as the nasociliary nerve. Maxillary nerve gave rise to the zygomaticofacial branch, accessory zygomaticofacial branch, communicating branch with oculomotor nerve, pterygopalatine nerve, caudal superior alveolar branch, malar branch and was continued as the infraorbital nerve. Mandibular nerve was divided into the masseteric nerve, buccal nerve, lateral pterygoid nerve, medial pterygoid nerve, nerve to tensor tympani m., auriculotemporal nerve, and furnished the inferior alveolar nerve and lingual nerve as terminal branches. The course and distribution of the trigeminal nerve in the Korean native goat appeared to be similar to that in other small ruminants such as sheep and goat. But the main differences from other small ruminants were as follows : 1. There was no accessory branch of the major palatine nerve. 2. The caudal superior alveolar branch was directly branched from the maxillary nerve. 3. The communicating branch with oculomotor nerve was originated from maxillary nerve or common trunk with zygomaticofacial branch. 4. The malar branch arose from the maxillary nerve at the rostral to the origin of the caudal superior alveolar branch. 5. The inferior alveolar nerve originated in a common trunk with the lingual nerve. 6. The mylohyoid nerve arose at the origin of the inferior alveolar nerve. 7. The zygomaticotemporal branch was single fascicle, and gave off lacrimal nerve and cornual branch. 8. The base of horn was provided by the cornual branches of zygomaticotemporal branch and infratrochlear nerve of nasociliary nerve.

• 한국수산과학회지
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• 제18권4호
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• pp.381-400
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• 1985

한국산 황어아과 어류의 많은 표본을 국내 여러 하천에서 채집하여 검토한 결과 모두 7속 12종으로 동정되어 이들의 검색표와 동종이명을 제시하고 기재하였다. 종전에 국내에서 Moroco lagowskii와 OP-sariichthys bidens로 기록되었던 것은 표본과 문헌 검토 결과 M. steindachneri와 O. uncirostris amurensis의 학명을 사용하는 것이 타당하다고 생각되었다. 한국산 Aphyocypris chinensis는 중국산 표본 기재에 비해서 두장이 현저하게 크고, 미타장이 짧아 분류학적으로 주목된다. 한국 고유종인 M. keumgang의 두골과 Weberian apparatus를 기재하고, 황어아과 여러 속의 특징과 비교하였데, 그 가운데 Aphyocypris 속의 수개형질(frontal, infraorbital 및 trigeminofacialis foramen 등)이 다른 여러 속에 비하여 아주 특이하였다. 핵형은 3가지 양상을 나타내었으나 (2n=50: T. hakonensis, P. phoxinus, M. oxycephalus, M. steindachneri, M. keumgang; 2n=48: Z. platypus, Z. temminckii, A. chinensis; 2n=76: O. u. amurensis), 염색체배수나 종내염색체다형현상은 보이지 않았다. 전기영동에 의한 14개 유전자의 종간근연관계의 분석은 P. phoxinus와 A. chinensis가 다른 분류군과 유전적으로 구분되었다. 본 연구에서는 황어아과 어류의 계통관계에 대하여 논의하였고, 한국산 황어아과를 1) Zacco, Opsariichthys, Tribolodon, phoxinus, Morco의 5속, 2) Squaliobarbus 및 3) Aphyocypris의 3 group으로 구분되었다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제22권3호
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• pp.319-329
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• 2000

Prediction of the soft tissue changes following hard tissue movement is very important from the esthetic view point for patients who have orthognathic surgery. There are many cephalometric analysis of facial bone and soft tissue on the lower lip and chin region but few soft tissue analysis on the midface after mandibular setback surgery. This study was performed to obtain whether the mandibular posterior movement has influence on the midface and the predictable ratio of post-operative measurement values of the soft tissue changes following mandibular setback surgery. Fifteen patients (8 males and 7 females) who had undergone mandibular setback surgery were selected and analyzed the soft tissue movement on the upper lip and the cheek region. Post-operative changes of the soft tissue measurements after mandibular surgery were examined on pre- and post-operative cephalometrics and the ratio of changes were analyzed after drawing the reference line on the face with the barium sulfate solution. The reference lines were perpendicular to the intercanthal line from infraorbital foramen and lateral canthus. The results obtained were as follows : 1. There were tendancy of anterior movement of soft tissue adjacent the nose after mandibular surgery 2. There were incerased tendancy of the amount of anterior movement from the nasal crease to the cheek region. 3. The amount of anterior movement of the soft tissue was larger below the palatal plane compared with above the palatal plane in the cheek region. 4. The upper lip length was increased and moved posterior direction after mandibular setback surgery 5. The lower lip was moved posterior direction by posterior movement of the mandibular structure 6. Soft tissue of the midface around the nose moved anterior direction after mandibular setback surgery but there was no correlation between the amount of mandibular setback and the amount of the soft tissue changes