Three dimensional analysis of Korean dentogingival complex.

Yeong Suk PARK; Seung Pyo LEE; Tae Il KIM

作者: Yeong Suk PARK ¹ ; Seung Pyo LEE ; Tae Il KIM
作者信息

1. Department of Oral anatomy, School of Dentistry, Seoul National university, Korea.
出版类型:Original Article
关键字: dentogingival complex; periodontal biotype; three dimensional scanner
医学主题词: Crowns; Dentists; Humans; Tooth
来源:The Journal of the Korean Academy of Periodontology 2008;38(2):199-206
国家Republic of Korea
语言:Korean
摘要: 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 63.77+/-16.05%. Coincidence rate between observers was 76.15+/-16.43%. 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.