구개문의 개인특이성과 안전성에 관한 연구
Individuality and Stability of the Palatal Rugae Pattern
채규삼, 신금백,
소속 상세정보
채규삼 ( ) - 전남대학교 신경과 병동
신금백 ( ) - 전북대학교 치과대학 구강내과학교실
KMID : 0355220020270020285
Abstract
This study was performed to obtain the basic data on the evaluation of the possibility for the palatal rugae pattern to be used as a dental datum in forensic odontological individual identification with respect to its individuality and stability in twins before/after orthodontic treatment.
Dental casts were prepared from dental records of Korean 8 twins without congenital/acquired deformities and orthognathic surgeries on oromaxillofacial region. Prominent rugae on prepared dental casts were mainly classified into anterior, intermediate, posterior primary rugae in their anteroposterior positional relationship, and into straight, waved, angular rugae in their overall shapes, and anterior oblique, transverse, posterior oblique rugae in their inclinination from palatal raphe toward approximating teeth. Also prominent palatal rugae were mainly classified into continued, branched, dropleted rugae in their shapes of termination toward approximating teeth. The individual palatal rugae pattern was determined by the combination of each primary ruga classified by position, shape, inclinination and termination.
And the zone of the ruga was determined by extending its lateral end point perpendicularly to palatal raphe toward approximating tooth for positional relationship between palatal ruga and approximating tooth. The zones were divided into medial, distal, and proximal zones. Also the linear length and the anteroposterior/transversal distance between medial/lateral end points were measured. And the bilateral symmetry of palatal rugae pattern was analyzed from the above data. Collected data of the linear length and the anteroposterior/transversal distance between medial/lateral end points of rugae were statistically analyzed for evaluation of individuality of the palatal rugae pattern in 8 twins before orthodontic treatment, and evaluation of stability of the palatal rugae pattern in 4 twins with completion of nonsurgical orthodontic treatment.
In general, there was an individulity of the palatal rugae pattern composed of each ruga with various shape, inclinination and termination toward to the approximating teeth in twin of same twins though they had the similar pattern of Angle's classified malocclusion. One-dimensional changes in length and anteroposterior/transversal distance between medial/lateral end points of palatal rugae in twins with completion of nonsurgical orthodontic treatment, though to lesser extent, occurred. But there were no statistical significances in most parameters. And there was no uniformed-bilateral symmetry of the rugae pattern in twins.
Therefore, it is considered that the palatal rugae pattern could be used with some limitation as a dental datum in forensic odontological individual identification with respect to its individuality and stability.
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