한국인 치아치은 집합체구조의 삼차원적인 분석
Three dimensional analysis of Korean dentogingival complex
박영석, 김태일, 이승표,
소속 상세정보
박영석 ( Park Young-Seok ) - 서울대학교 치과대학 구강해부학교실
김태일 ( Kim Tae-Il ) - 서울대학교 치과대학 치주과학교실
이승표 ( Lee Seung-Pyo ) - 서울대학교 치과대학 구강해부학교실
KMID : 0363020080380020199
Abstract
Purpose: Variation in the morphology of gingival papilla may be determined by the shape and position of anatomic crown as well as contact area and embrasure form of individual teeth. However, periodontal biotype classification is regarded to be subjective because of the lack of definite criteria. In this study, we defined the objective parameters which constitute the periodontal biotype and measured their relationship.
Materials and Methods: 109 of dental casts were prepared using three dimensional scanner and specialized reconstruction software, then acquiredvirtual models were sent to the 20 professional dentists to define the specific periodontal biotypes. Several parameters around periodontal structures were measured from the virtual models; facial surface area of the anterior tooth (AT), anterior papillary area (AP), proportion of the dento-papillary complex, clinical papillary length (PL), and clinical papillary angle (PA). Statistical analysis was performed to confirm the relationship among parameters.
Results: Coincidence rate of periodontal biotype within observers was . Coincidence rate between observers was . Among the parameters measured, PL showed the most positive correlations and PA presented the most negative correlations. The parameter of the AP and PL of six maxillary anterior teeth showed significant correlation coefficient.
Conclusion: Anterior papillary area and clinical papillary length would be objective parameters for determining the consistent periodontal biotypes.
키워드
dentogingival complex;periodontal biotype;three dimensional scanner
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