• 제목/요약/키워드: chin

검색결과 3,668건 처리시간 0.029초

상하악 치조전돌증의 양악 분절골절단 수술후 경, 연조직 변화에 관한 연구 (SOFT HARD TISSUE CHANGES FOLLOWING ANTERIOR SEGMENTAL SURGERY IN BIMAXILLARY PROTRUSION)

  • 송재철;진병로
    • Maxillofacial Plastic and Reconstructive Surgery
    • /
    • 제19권3호
    • /
    • pp.250-259
    • /
    • 1997
  • The purpose of this study was to evaluate the interrelationship of the soft and hard tissue changes after both maxillary and mandibular anterior segmental surgery in bimaxillary protrusion patients. 11 patients had received both maxillary and mandibular anterior segmental surgery and were investigated radiologically with lateral cephalogram. The results were as follows : 1. The correlation of maxillary hard and soft tissue horizontal changes were relative high. : Coefficient between UIE and Stms was 0.89 (p<0.001). 2. The correlation of mandibular hard and soft tissue horizontal changes were very high, especially at the chin. : Coefficients were over 0.90 (p<0.001) 3. All points were moved superiorly except SLS, LS, Stms. 4. Upper and lower lip convexity to the E-Line were decreased (p<0.001) and postsurgical facial profiles were changed very esthetically.

  • PDF

A New Door for Molecular-Based Organic Electroluminescent Devices

  • Jou, Jwo-Huei;Wang, Wei-Ben;Hsu, Mao-Feng;Lai, Wen-Hsuan;Chen, Chin-Ti;Chin, Chih-Lung
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
    • /
    • pp.350-353
    • /
    • 2009
  • While the comparatively high MW would make the employed molecules extremely difficult to vacuum-evaporate, and result in poor device performance, the wet-process has been proven to be quite effective and convenient as usual to the fabrication of high-efficiency OLEDs composing high MW components.

  • PDF

Long Face(open-bite) 환자의 수술 교정 치료 (ORTHOPEDIC AND SURGICO-ORTHODONTIC TREATMENT IN THE LONG FACE)

  • 백형선
    • 대한치과교정학회지
    • /
    • 제19권3호
    • /
    • pp.147-160
    • /
    • 1989
  • Long face patients are characterized by excessive anterior facial height, lip incompetence at rest, anterior open bite, and gummy smile. A major problem is an inferior rotation of the posterior maxilla and upper molars. Long face patients have been the most difficult for orthodontist to treat successfully. In growing patients, the methods for impeding excessive vertical growth have been used high pull head gear, functional appliance, and combined type of two. One significant improvement comes from using a full arch splint to deliver force to the maxilla more vertically. In adult patients, orthodontic camouflage treatment is biomechanically difficult and doesn't work when the problem is primarilly vertical. Surgical maxillary impaction provides a means for successfully treating most of problems. Also, superior reposition of the chin via a mandibular inferior border osteotomy is effective in decrease of lower anterior facial height and correction of the poor chin-lip balance. Post-surgical stability and the physiologic response are good. The coordinated orthodontic and surgical treatment is necessary for solution the difficult skeletal deformity.

  • PDF

편평상피암과 연관된 거대피각 1례 (Giant Cutaneous Horn Associated with Squamous Cell Carcinoma: A Case Report)

  • 이정훈
    • Archives of Plastic Surgery
    • /
    • 제32권5호
    • /
    • pp.645-648
    • /
    • 2005
  • Cutaneous horn is a morphologic designation for a projectile, conical, dense hyperkeratotic nodule that resembles the horn of an animal. The lesion varies in size from only a few millimeters to several centimeters, in color(white or yellowish) and in form (straight, curved, or twisted). It arises from a wide range of epidermal lesions, which include benign lesions, premalignant lesions and malignant lesions. An 83-year-old women came to our clinic with a giant cutaneous horn on the right chin and a small horn on the left upper eyelid. The patient had no palpable cervical lymph node. A wide elliptical skin incision was made and the horn was totally excised. In pathology, the giant cutaneous horn on the right chin revealed a moderately differentiated squamous cell carcinoma with subcutis invasion at its base. "Giant cutaneous horns" have often been associated with invasive squamous cell carcinoma. Cutaneous horns are common lesions usually found on the face, rarely larger than 2 cm. As large cutaneous horns are often associated with underlying malignancy, histopathologic examination of the base of the lesion is necessary to rule out carcinoma and full excision is recommended.

Treatment of post-traumatic chin deformities using bilateral botulinum toxin injections

  • Park, Eon Ju;In, Seok Kyung;Yi, Hyung Suk;Kim, Hong Il;Kim, Ho Sung;Kim, Hyo Young
    • 대한두개안면성형외과학회지
    • /
    • 제20권5호
    • /
    • pp.310-313
    • /
    • 2019
  • Post-traumatic hematoma formation is a common complication of contusion. If the hematoma is large enough to aspirate or drain, it can be treated quickly and appropriately. However, if the hematoma is small or concealed by local swelling, it may be overlooked and left untreated. In most cases, a hematoma will resolve following conservative treatment; however, associated infection or muscle fibrosis can occur. Herein, we present the case of a patient with a chin deformity caused by a post-traumatic hematoma. The deformity was treated using botulinum toxin and triamcinolone acetonide injections as minimally invasive treatments. The course of treatment was good.

Effect of a vertical guide plate on the wind loading of an inclined flat plate

  • Chung, Kung-Ming;Chou, Chin-Cheng;Chang, Keh-Chin;Chen, Yi-Jun
    • Wind and Structures
    • /
    • 제17권5호
    • /
    • pp.537-552
    • /
    • 2013
  • Wind tunnel experiments were performed to study the wind loads on an inclined flat plate with and without a guide plate. Highly turbulent flow, which corresponded to free-stream turbulence intensity on the flat roof of low-rise buildings, was produced by a turbulence generation grid at the inlet of the test section. The test model could represent a typical solar collector panel of a solar water heater. There are up-stream movements of the separation bubble and side-edge vortices, more intense fluctuating pressure and a higher bending moment in the turbulent flow. A guide plate would result in higher lift coefficient, particularly with an increased projected area ratio of a guide plate to an inclined flat plate. The value of lift coefficient is considerably lower with increased free-stream turbulent intensity.

New records of flowering plants of the flora of Myanmar collected from Natma Taung National Park (Chin State)

  • Kang, Dae-Hyun;Ling, Shein Man;Kim, Young-Dong;Ong, Homervergel G.
    • 식물분류학회지
    • /
    • 제47권3호
    • /
    • pp.199-206
    • /
    • 2017
  • The last four years of joint botanical collections by the governments of Myanmar and South Korea in Natma Taung National Park and adjacent areas in the Chin State of Myanmar have revealed the presence of 20 naturally occurring species of angiosperms new to the flora of Myanmar. Plants not previously recorded include species originally considered to be only found in neighboring mega-diverse countries. Examples (e.g., for India) include Boehmeria manipurensis Friis & Wilmot-Dear (Urticaceae), Trigonotis hookeri Benth. ex C. B. Clarke (Boraginaceae) and Mycetia radiciflora (C. B. Clarke) Airy Shaw (Rubiaceae); those for China include Microtoena delavayi Prain (Lamiaceae), Pimpinella kingdon-wardii H. Wolff (Apiaceae) and Senecio diversipinnus Y. Ling (Asteraceae). The data presented in this report are expected to be useful sources for phytogeographical studies of these species.

Tooth hypersensitivity associated with paresthesia after inferior alveolar nerve injury: case report and related neurophysiology

  • You, Tae Min
    • Journal of Dental Anesthesia and Pain Medicine
    • /
    • 제21권2호
    • /
    • pp.173-178
    • /
    • 2021
  • Inferior alveolar nerve (IAN) injury is usually caused by stretching or crushing of the neurovascular structures and postoperative intra-alveolar hematoma or edema after dental procedures. This results in paresthesia in the ipsilateral chin, lip (vermilion border, skin, and mucosa), and labial or buccal alveolar mucosa of the mandibular anterior teeth. However, there are no reports of sensory alterations in the teeth, especially tooth hypersensitivity, after IAN injury. I report a case in which paresthesia of the lower lip and hypersensitivity of the lower anterior teeth occurred simultaneously after the removal of the third molar that was located close to the IAN. In addition, I discuss the reasons for the different sensory changes between the tooth and chin (skin) after nerve injury from a neurophysiological point of view. Since the dental pulp and periodontal apparatus are highly innervated by the inferior alveolar sensory neurons, it seems necessary to pay attention to the changes in tooth sensitivity if IAN injury occurs during dental procedures.