• 제목/요약/키워드: 하악전돌증

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하악전돌증 환자의 하악전치부 순측 치조골 형태에 관한 방사선학적 연구 (A Radiological Study on the Morphology of Labial Alveolar Bone in the Mandibular Incisor Area of Mandibular Prognathism Patients)

  • 김점숙;황현식
    • 대한치과교정학회지
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    • 제29권2호
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    • pp.209-217
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    • 1999
  • 하악 전돌자에서의 치은퇴축 발생 소인을 알아보기 위하여 20세 전후의 악교정수술을 요하는 하악전돌자와 비슷한 연령대의 정상교합자를 대상으로 측모 두부방사선 사진과 하악 전치부의 단층 촬영사진을 사용하여 순측 치조골 계측치를 비교 연구한 바 다음과 같은 결과를 얻었다. 1. 하악전돌자의 순측 치조골 피질판의 단면적은 정상군보다 의미있게 작았다. 2. 하악전돌자의 치조정은 정상군에 비하여 낮은 것으로 나타났다. 3. 순측 치조골판의 면적은 백아법랑질 경계에서 치조정까지의 거리와는 역상관관계를, 치조정에서 치근단까지의 거리와는 순상관관계를 보였다. 4. 하악전돌자에서 IMPA의 증가는 symphysis의 두께와 순상관 관계를, 치조골의 높이와는 역상관 관계를 보였다. 이상의 결과에서 골격성 하악전돌자는 변연부 순측 치조골이 정상교합자보다 작음으로 치은퇴축 발생 가능성이 큼을 시사하였다.

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하악전돌증환자의 악교정수술후 안면측모 변화에 관한 두부방사선 계측학적 연구 (A CEPHALOMETRIC STUDY OF PROFILE CHANGES FOLLOWING ORTHOGNATHIC SURGERY IN PATIENTS WITH MANDIBULAR PROGNATHISM)

  • 이형식;박영철
    • 대한치과교정학회지
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    • 제17권2호
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    • pp.299-310
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    • 1987
  • The purpose of this study was to examine soft tissue and hardtissue changes following orthognathic surgery in patients with mandibular prognathism lateral cephalometric films were obtained immediate before surgery, 48 hours following surgery, and 6 months following surgery. 18 patients were selected (10 men, and 6 women) for this study, who had received orthognathic surgery. Statistical analysis for the each time interval differences were performed with the SPSS package The results were as follows, *In the cases of mandibular sagittal split osteotomy 1 LI point was moved backward (average 7.55mm) 48 hours following surgery. 6 months later, it was returned forward (average 1.1mm) Relapse rate was 14.6% 2 Pog was moved backward (average 8.3mm) 48 hours following surgery The ratio of horizontal change of soft tissue to hard tissue at pog is 0.95 1 *In the cases of maxillary Le-Fort I osteotomy & mandibular sagittal split osteotomy. 3. A point was moved forward (average 3.31mm) 48 hours following surgery. 6 months later, it was returned backward (average 0.31) Relapse rate was 9 4% 4 6 months later, the ratio of facial convexity angle change of soft tissue to hard tissue is 0.63 1.

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하악전돌증 환자의 악교정 수술후 하악과두의 위치변화에 대한 연구 (A CEPHALOMETRIC AND PANORAMIC ANALYSIS OF THE CHANGES OF THE CONDYLAR POSITION AFTER ORTHOGNATHIC SURGERY)

  • 강영기;김종렬;양동규
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제22권4호
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    • pp.411-419
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    • 2000
  • Purpose: This study was aimed at analysis of the changes in the condyle position in subjects with mandibular setback osteotomies Method: Twenty patients were evaluated retrospectively for their changes in the condyle position who underwent surgical mandibular setback using bilateral sagittal split osteotomies with a manual condyle repositioning technique and rigid fixation. The cephalometric and panoramic analysis was performed preoperatively, 1 week, 6 months, and 1 year postoperatively. And postoperative noise, temporomandibular joint pain, and mouth opening were clinically examined 2 months, 4 months, 6 months, 8 months, 10 months, and 12 months postoperatively. Result: The condyles rotated posteriorly and laterally immediately after surgery, and they returned to the preoperative position during follow-up period but it is not significant. The statistical analysis (Paired t-test) showed no significant effects in postsurgical stability. The changes in the condyle position didn't have a significant harmful influence on temporomandibular joint disorder. Conclusion: A careful surgical mandibular setback using manual condyle repositioning and fixation technique will move condyle minimally and that will decrease the relapse and temporomandibular joint disorder.

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변형 LeFort III 골절단술을 이용한 중안면 성장부전을 동반한 하악전돌증의 치험례 (MODIFIED LEFORT III OSTEOTOMY FOR MANDIBULAR PROGNATHISM WITH MAXILLARY-MALAR DEFICIENCY : A CASE REPORT)

  • 김문수;김수관;류종희
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제23권2호
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    • pp.169-173
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    • 2001
  • 본 교실에서는 조선대학교 구강악안면외과에 내원한 중안면성장부전을 동반한 하악전돌증소견을 보이는 22세 여자 환자의 치료에 있어서 변형 LeFort III 골절단술과 양측 하악지 시상분할골절단술 그리고 자가 장골 이식술을 동시에 시행하여 기능적 심미적으로 만족할 만한 결과를 얻었기에 보고하는 바이다.

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