• Title/Summary/Keyword: oral application

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발성기법의 영상 해부학적 고찰과 응용 (구강과 인두강 공명을 중심으로) (The Imaging Anatomical Consideration and Application of Vocal Technique (Emphasis on the Resonance of the Oral and Pharyngeal Cavity))

  • 이동명
    • 대한방사선기술학회지:방사선기술과학
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    • 제22권1호
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    • pp.35-42
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    • 1999
  • This study was undertaken to take the correct vocal technique(especially about the resonance of oral cavity). The resonance of oral and pharyngeal cavity is the principle which can vocalize well without any abnormal signs in the throat. Therefore it is important for us to understand how to use the correct resonance of oral and pharyngeal cavity. Shimadzu X-ray remote control TV system and Shimadzu magnet $nex-{\alpha}$ (SMT-50CX/H) were used for checking the movements of T-M joint and diaphragmatic respiration. The results obtained were summerized as follows: 1. While opening T-M joint space like the vowel "A" [a], We should vocalize five fundamental vowel [a,e,i,o,u] with diaphragmatic respiration holded. 2. Diminuendo must be expressed by increasing a breath volume while descending a mandible gradually because we can not ascend maxilla. So we can make a delicate expression. 3. The resonance of oral cavity must be scattered by elevating the soft palatine lightly with relax of throat.

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천혜의 항생제: 항균펩티드 (Natural Antibiotics: Antimicrobial Peptides)

  • 김연숙;김정재;최영님
    • 대한치과의사협회지
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    • 제41권2호통권405호
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    • pp.116-123
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    • 2003
  • Antimicrobial Peptides are natural antibiotics evolved by many plants, invertebrate, and vertebrate to defend against the microbial infection. Antimicrobial peptides show a broad-spectrum antimicrobial activity with little opportunity for the development of resistance since they target microbial membranes that distinguish microbes from enkaryotic cells. The oral cavity is constantly exposed to microbial challenges and antimicrobial peptides play an important role in managing the oral health. With the increase of resistant micro-organisms to conventional antibiotics, antimicrobial peptides are attracting interests as novel antibiotics. In this review, the characteristics of antimicrobial of antimicrobial peptides including the classification, mechanism of action, resistance, and expression in the oral cavity have been discussed in the prospects of application to oral disease.

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Application of 3D Simulation Surgery to Orthognathic Surgery of Hemimandibular Hypoplasia

  • Park, Jin Hoo;Jung, Young-Soo;Kwon, Sun-Mo;Lim, Jae-Seok;Jung, Hwi-Dong
    • Journal of International Society for Simulation Surgery
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    • 제3권2호
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    • pp.69-73
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    • 2016
  • Traditionally 2D cephalometric analysis has been used for diagnosis and treatment of maxillofacial deformities. However, 2D has some limitations in diagnosis and treatment planning especially facial asymmetry cases. The most weakness of 2D is overlapping and unpredictability. Today 3D treatment tools are used by many maxillofacial surgeons. 3D treatment tools can show ungarbled facial anatomy and do virtual surgery. The aim of this report is to present usefulness of using 3D analysis and virtual orthognathic surgery for severe facial asymmetry patients.

Application of 3D Simulation Surgery to Mandibular Asymmetry: Case Report

  • Lee, Sung-Hwa;Lee, Ho-Sung;Jung, Young-Soo;Park, Hyung-Sik;Jung, Hwi-Dong
    • Journal of International Society for Simulation Surgery
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    • 제1권2호
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    • pp.95-98
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    • 2014
  • Two-dimensional cephalometric analysis has been used for diagnosis and treatment of correction of mandibular asymmetry by many maxillofacial surgeons. And 2D analysis showed excellent results in many cases, however 2D has some drawbacks in diagnosis and treatment planning because of its fundamental limitation like overlapping. Today many physicians use 3D diagnosis & treatment tools to expect better results and reduce possible errors. The aim of this report is to present treatment procedures using 3D analysis and treatment modalities for mandibular asymmetry patients.

Expression of Bone Morphogenetic Protein-2 and Histological Differentiation of Oral Squamous Cell Carcinomas

  • Hamasni, Fatme Mouchref;El Hajj, Fady
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권12호
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    • pp.5243-5245
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    • 2016
  • Background and Objective : Bone morphogenic protein-2 (BMP-2) plays an essential role in mesenchymal cell differentiation into osteoblasts، through many intracellular pathways which may also be active in tumors. Invasive oral squamous cell carcinomas account for more than 90% of head and neck malignancies in many cancer registries. They are classified into three types according to epithelial cell differentiation. The present study aimed to identify any relation between BMP-2 expression and tumor histology. Materials and methods: BMP-2 expression was compared immunohistochemically among 30 cases (19 male and 11 female, mean age 48 years) of oral squamous cell carcinoma, Division was into 3 groups (each containing 10 cases) according to the histological grade. Results: No significant correlation between BMP-2 expression and histological grade was observed. Changes in localization and cytoplasmic staining were also not apparent. Conclusion: From the results of this study BMP-2 does not appear to have any application as a prognostic marker for oral squamous cell carcinomas.

Multi-layer image 소프트웨어를 사용한 파노라마방사선영상의 임상적 활용 : 증례보고 (Clinical application of panoramic radiography With multi-layer imaging software : Case reports)

  • 전국진;김재훈;이정희;김영현;한상선
    • 대한치과의사협회지
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    • 제57권1호
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    • pp.26-33
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    • 2018
  • Panoramic radiography is widely used as a primary radiological diagnosis in dentistry. However, due to the overlapping of anatomical structures, diagnostic capability of panoramic radiography is limited. Recently, panoramic machine equipped with various image processing software has been introduced to improve the diagnostic capability. This study aims to introduce panoramic equipment with multi-layer imaging software that can provide 41 images from anterior to posterior in region of interest, and to report in various clinical applications.

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Spontaneous bone regeneration in resected non-continuous mandible due to medication-related osteonecrosis of the jaw

  • Esen, Alparslan;Gurses, Gokhan;Akkulah, Sebne
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • 제47권6호
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    • pp.465-470
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    • 2021
  • Few cases of spontaneous bone regeneration after extensive resection of the jaw bone have been reported, but it is more common in young adults or children. In this case, we report spontaneous bone healing in a 73-year-old female patient. On radiological examination, necrotic regions were seen in the right mandible. She was diagnosed with medication-related osteonecrosis of the jaw due to previous bisphosphonate use. After segmental resection, stabilization achieved using a reconstruction plate. The periosteum was preserved during the procedure. Twelve months later, panoramic radiography was taken and bone formation was seen both horizontally and vertically around the plate. If the periosteum is preserved and stabilization is achieved after resection in benign lesions, the bone may regenerate spontaneously regardless of age. Therefore, instead of simultaneous autogenous bone application, such patients may be followed to determine whether spontaneous bone healing will occur. This should improve patient comfort and reduce surgical cost.

구순구개열과 관련된 상악골 변형의 치료를 위한 골신장술의 다양한 적용예 (Various Application of Distraction Osteogenesis in Cleft Lip and Palate related Deformities)

  • 이호;백승학;이종호;최진영
    • 대한구순구개열학회지
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    • 제8권1호
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    • pp.11-22
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    • 2005
  • 상악골의 열성장과 횡적 부조화, 그리고 광범위한 치조열 및 구강상악동 누공의 치료에 있어서 기존의 방법에 비해 골신장술을 사용하였을 경우, 본 증례들과 관련 문헌 고찰을 통하여, 견인량의 충분한 확보 및 회귀율의 최소화를 얻을 수 있으며, 또한 입원가료기간의 감소와 연조직 부조화의 해결을 볼 수 있어 구순구개열에 관련된 상악골 변형의 치료에 골신장술이 유용한 치료법이라 생각되어 보고한다.

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교정력에 의한 치은열구 삼출액의 양 및 효소활성의 변동 (DYNAMICS OF GINGIVAL CREVICULAR FLUID VOLUME AND ENZYME ACTIVITIES AFTER APPLICATION OF ORTHODONTIC FORCE)

  • 강애리;류현모;성재현
    • 대한치과교정학회지
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    • 제19권3호
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    • pp.137-145
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    • 1989
  • 교정력을 가함으로 인한 치은열구 삼출액의 양 및 삼출액 내에 함유된 arylsulfatase와 $\beta$-glucuronidase 활성의 변동을 관찰하기 위하여 Angle씨 1급 부정교합 환자중 상하악 좌우 제1소구치를 발치한 환자 12명을 선정하여 장치의 장착전, 교정력은 가하지 않고 장치만 장착한 상태, 교정력을 가하고 1주후 및 교정력이 감소하여 다움 교정력을 가하기 위해 내원한 시기에 각각 환자의 원심 치은열구에서 삼출액을 채취하였다. 삼출액의 양은 전 기간을 통하여 뚜렷한 변동을 나타내지 않았다. Arylsulfatase의 활성은 치료전에 비하여 교정장치만 장착한 이후부터 유의성 있는 증가를 나타내었으나 교정력을 가한 이후 효소의 활성은 2차시기에 비해 유의한 차이를 나타내지 않았다. $\beta$-glucuronidase의 활성은 교정장치만 장착한 이후에도 증가하였으며, 교정력을 가한 이후에도 2차시기의 활성에 비해 유의한 증가를 나타내었고 교정력이 상실된 4차시기에는 유의성 있는 감소를 나타내었다. 이상의 결과로 볼 때 $\beta$-glucuronidase의 활성은 첫 교정력을 가함에 의한 치조골 및 치주조직 재형성을 잘 반영할 수 있는 좋은 지표로 사료된다.

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구연산 HA임플란트 표면구조에 미치는 영향 (The Effects of Citric Acid on HA coated Implant Surface)

  • 김중천;권영혁;박준봉;허익;정종혁;신승일
    • Journal of Periodontal and Implant Science
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    • 제37권3호
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    • pp.575-584
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    • 2007
  • The present study was performed to evaluate the effect of citric acid on the change of implant surface microstructure according to application time. Implants with pure titanium machined surface, and HA coated surface were utilized. Pure titanium machined surface and HA coated surface were rubbed with pH 1 citric acid for 30s., 45s., 60s., 90s., and 120s. respectively. Then, the specimens were processed for scanning electron microscopic observation. The following results were obtained. 1. The specimens showed a few shallow grooves and ridges in pure titanium machined surface implants. The roughness of surfaces conditioned with pH 1 citric acid was slightly increased. 2. In HA-coated surfaces, round particles were deposited irregularly. The specimens were not significant differences within 45s. But, began to be changed from 60s. The roughness of surfaces was lessened and the surface dissolution was increased relative to the application time. In conclusion, pure titanium machined surface implants and HA coated surface implants can be treated with pH 1 citric acid for peri-implantitis treatment if the detoxification of these surfaces could be evaluated.