지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한악안면성형재건외과학회 Maxillofacial Plastic Reconstructive Surgery Maxillofacial Plastic Reconstructive Surgery 제37권 제10호
- 발행연도
- 2015.10
- 수록면
- 1 - 9 (9page)
- DOI
- 10.1186/s40902-015-0033-1
이용수
초록· 키워드
오류제보하기
BackgroundThe porion (Po) is used to construct the Frankfort horizontal (FH) plane for cephalometrics, and the external auditory meatus (EAM) is to transfer and mount the dental model with facebow. The classical assumption is that EAM represents Po by the parallel positioning. However, we are sometimes questioning about the possible positional disparity between Po and EAM, when the occlusal cant or facial midline is different from our clinical understandings. The purpose of this study was to evaluate the positional parallelism of Po and EAM in facial asymmetries, and also to investigate their relationship with the maxillary occlusal cant.
MethodsThe 67 subjects were classified into three groups. Group I had normal subjects with facial symmetry (1.05?±?0.52 mm of average chin deviation) with minimal occlusal cant (<1.5 mm). Asymmetry group II-A had no maxillary occlusal cant (average 0.60?±?0.36), while asymmetry group II-B had occlusal cant (average 3.72?±?1.47). The distances of bilateral Po, EAM, and mesiobuccal cusp tips of the maxillary first molars (Mx) from the horizontal orbital plane (Orb) and the coronal plane were measured on the three-dimensional computed tomographic images. Their right and left side distance discrepancies were calculated and statistically compared.
ResultsEAM was located 10.3 mm below and 2.3 mm anterior to Po in group I. The vertical distances from Po to EAM of both sides were significantly different in group II-B (p?=?0.001), while other groups were not. Interside discrepancy of the vertical distances from EAM to Mx in group II-B also showed the significant differences, as compared with those from Po to Mx and from Orb to Mx.
ConclusionsThe subjects with facial asymmetry and prominent maxillary occlusal cant tend to have the symmetric position of Po but asymmetric EAM. Some caution or other measures will be helpful for them to be used during the clinical procedures.
목차
등록된 정보가 없습니다.
참고문헌 (22)
참고문헌 신청
Zebeib AM / 2014 / Variability of the inclination of anatomic horizontal reference planes of the craniofacial complex in relation to the true horizontal line in orthognathic patients / Am J Orthod Dentofacial Orthop 146(6):740~747
Naini FB / 2013 / The Frankfort plane and head positioning in facial aesthetic analysis-the perpetuation of a myth / JAMA Facial Plast Surg 15(5):333~334
Katsumata A / 2005 / 3D-CT evaluation of facial asymmetry / Oral Surg Oral Med Oral Pathol Oral Radiol Endod 99(2):212~220
Pancherz H / 1996 / The reliability of the Frankfort horizontal in roentgenographic cephalometry / Eur J Orthod 18(4):367~372
Wolford LM / 2007 / Simple and accurate method for mounting models in orthognathic surgery / J Oral Maxillofac Surg 65(7):1406~1409
Naini FB / 2013 / The Frankfort plane and head positioning in facial aesthetic analysis-the perpetuation of a myth / JAMA Facial Plast Surg 15(5):333~334
Katsumata A / 2005 / 3D-CT evaluation of facial asymmetry / Oral Surg Oral Med Oral Pathol Oral Radiol Endod 99(2):212~220
Pancherz H / 1996 / The reliability of the Frankfort horizontal in roentgenographic cephalometry / Eur J Orthod 18(4):367~372
Wolford LM / 2007 / Simple and accurate method for mounting models in orthognathic surgery / J Oral Maxillofac Surg 65(7):1406~1409
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