Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
권호 표지

Three dimensional analysis of Korean dentogingival complex

한국인 치아치은 집합체구조의 삼차원적인 분석

  • Park, Yeong-Suk (Department of Oral anatomy, School of Dentistry, Seoul National university) ;
  • Lee, Seung-Pyo (Department of Oral anatomy, School of Dentistry, Seoul National university) ;
  • Kim, Tae-Il (Department of Periodontology, School of Dentistry, Seoul National university)
  • 박영석 (서울대학교 치의학대학원 구강해부학교실) ;
  • 이승표 (서울대학교 치의학대학원 구강해부학교실) ;
  • 김태일 (서울대학교 치의학대학원 치주과학교실)
  • Published : 2008.06.30
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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 $63.77{\pm}16.05%$. Coincidence rate between observers was $76.15{\pm}16.43%$. 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.

Keywords

References

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