Journal of Oral Medicine and Pain

Korean Academy of Orofacial Pain and Oral Medicine (대한안면통증구강내과학회)
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Lateral Cephalometic Assessment in Patients with Condylar Resorption

과두흡수가 있는 환자의 측방 두부방사선 계측

  • Hur, Yun-Kyung (Department of Oral medicine, School of Dentistry Kyungpook National University) ;
  • Park, Hyo-Sang (Department of Orthodontics, School of Dentistry Kyungpook National University) ;
  • Choi, Jae-Kap (Department of Oral medicine, School of Dentistry Kyungpook National University)
  • 허윤경 (경북대학교 치의학전문 대학원 구강내과학) ;
  • 박효상 (경북대학교 치의학전문 대학원 교정학교실) ;
  • 최재갑 (경북대학교 치의학전문 대학원 구강내과학)
  • Published : 2006.12.30
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Abstract

Aims: The present study investigated the relationship between condylar resorption and craniofacial skeleton types(especially vertical relationships), the differences of craniofacial skeleton types between with open bite group and without open bite group, and the associations of anterior disc dislocation with or without reduction to condylar resorption with MRI. Patients selection and methods: Clinical examination, magnetic resonance imaging (MRI), panorama, lateral transcranial and lateral cephalometric radiographs in 34 patients with condylar resorption were used to investigate this relationship. Results and Conclusions: Patients with the following specific facial morphologic characteristics appear to be most susceptible to condylar resorption: (1) females were predominant, (2) patients' age ranged from 12 to 50 years old with a strong predominance for 2nd and 3rd decades, (3) patients had high mandibular plane angle and high gonial angle, (4) patients had decreased vertical height of the ramus, (5) patients had generally significant antegonial notch, (6) patients had predominance of Class I occlusal relationship with or without open bite but mandible was retruded as mean ANB 5.54 degrees, (7) condylar resorption rarely occurs in lower mandibular plane angle facial types, (8) although no statistically significant difference was found, the open bite group had a tendency more hyperdivergent skeletal pattern than the non open bite group, and (9) imaging demonstrates from small resorbing condyles to idiopathic condylar resorption and TMJ articular disc dislocations. Thus, morphologic features of patients with vertical discrepancies may represent a risk factor for the development of condylar resorption.

이 논문은 2년 동안 경북대학병원 구강내과를 턱관절 질환을 주소로 내원한 환자 중에 과두흡수가 있는 환자들로서 자기공명영상, 파노라마, 측방횡두개상 그리고 측방 두부방사선 사진들을 모두 촬영한 34명의 환자들만 선택하여, 측방두부방사선 계측으로 과두흡수와 안면부 골격형태의 연관성을 한국인 정상 교합자들의 평균치와 비교 조사하였고, 전치부 개교합이 동반된 군과 개교합이 없는 군을 서로 비교하였으며, 또한 자기공명영상으로 과두흡수와 관절원판변위와의 관련성을 조사한 결과 과두흡수가 잘 발생될 수 있는 환자들은 다음과 같은 특징을 가졌다: (1) 34명중 1명만이 남자로 여자가 대부분이었다, (2) 연령대는 어느 연령에서나 발생가능하나 10대와 20대에서 발병률이 높았다, (3) 환자들은 높은 하악하연각과 높은 하악각을 가졌다. (4) 하악지의 높이는 작게 나타났으며, (5) 전악각 함요(antegonial notch)가 대체적으로 저명하였다, (6) 구치부 교합은 Angle's Class I 관계가 많았으나, ANB각도는 평균 5.54도로 하악의 후퇴를 나타내었다. (7) 과두흡수는 하악하연각이 낮은 경우에는 거의 발생하지 않았다, (8) 통계학적 유의한 차이는 없었으나 개교합이 동반된 군이 개교합이 없는 군보다 hyperdivergent한 골격형태를 가졌다, (9) 자기공명영상사진에서 과두흡수는 대부분 비정복성 관절원판전위와 연관되어 있었다. 수직적 골격성장이 큰 경우 관절원판 전방변위와 과두흡수의 원인이 될 수 있으리라 생각된다.

Keywords

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