Browse > Article
http://dx.doi.org/10.4047/jap.2017.9.4.315

Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults  

Song, Jae-Won (Department of Prosthodontics, Graduate School of Dentistry, Kyung Hee University)
Leesungbok, Richard (Department of Biomaterials & Prosthodontics, Kyung Hee University Hospital at Gangdong, School of Dentistry, Kyung Hee University)
Park, Su-Jung (Department of Biomaterials & Prosthodontics, Kyung Hee University Hospital at Gangdong, School of Dentistry, Kyung Hee University)
Chang, Se Hun (Department of Prosthodontics, Graduate School of Dentistry, Kyung Hee University)
Ahn, Su-Jin (Department of Biomaterials & Prosthodontics, Kyung Hee University Hospital at Gangdong, School of Dentistry, Kyung Hee University)
Lee, Suk-Won (Department of Biomaterials & Prosthodontics, Kyung Hee University Hospital at Gangdong, School of Dentistry, Kyung Hee University)
Publication Information
The Journal of Advanced Prosthodontics / v.9, no.4, 2017 , pp. 315-320 More about this Journal
Abstract
PURPOSE. The aim of this investigation was to analyze the dimensions of clinical crowns and to classify the crown and the gingival type in the anterior teeth in Korean young adults. MATERIALS AND METHODS. Casts were obtained from 50 subjects ranging in age from 24 to 32. Measurements of length and width were made on the casts using a pair of digital calipers on the entire dentition. Crown thickness and papilla height were also measured and MDW/CL (mesiodistal width to clinical length) and CW/CL (cervical width to clinical length) ratios of the maxillary anterior teeth were calculated. The K-clustering method was used for CW/CL to classify the anterior tooth shape into three groups (tapered, ovoid, and square), and one-way analysis of variance and Duncan's post-hoc comparison were used to evaluate statistical significance between the groups. Pearson's correlation analysis was performed between tooth shape and papillary height (PH) to demonstrate the correlation between tooth shape and gingival morphological characteristics. RESULTS. The average length of the maxillary central incisors was 9.89 mm; the mesio-distal width was 8.54 mm; and the ratio of width/length was 0.86 in Korean young adults. The average bucco-palatal thickness of the central incisor was 3.14 mm at the incisal 1/3 aspect. Ovoid type was the most common tooth shape (48%), followed by square type (29%) and taper type (23%) in the central incisors of Korean young adults. Tooth shape and gingival type were correlated with each other. CONCLUSION. New reference data were established for tooth size in Korean young adults and the data show several patterns of tooth shape and gingival type. Clinicians should diagnose and treat based on these characteristics for better results in the Korean population.
Keywords
Tooth size; Tooth shape; Anterior teeth; Gingival type; Korean adult;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Al-Khatib AR, Rajion ZA, Masudi SM, Hassan R, Anderson PJ, Townsend GC. Tooth size and dental arch dimensions: a stereophotogrammetric study in Southeast Asian Malays. Orthod Craniofac Res 2011;14:243-53.   DOI
2 Corruccini RS. Molar cusp-size variability in relation to odontogenesis in hominoid primates. Arch Oral Biol 1979;24:633-4.   DOI
3 Garn SM, Lewis AB, Swindler DR, Kerewsky RS. Genetic control of sexual dimorphism in tooth size. J Dent Res 1967;46:963-72.   DOI
4 Jensen E, Kai-Jen Yen P, Moorrees CF, Thomsen SO. Mesiodistal crown diameters of the deciduous and permanent teeth in individuals. J Dent Res 1957;36:39-47.   DOI
5 Sofaer JA, Chung CS, Niswander JD, Runck DW. Developmental interaction, size and agenesis among permanent maxillary incisors. Hum Biol 1971;43:36-45.
6 Reid C, van Reenen JF, Groeneveld HT. Tooth size and the Carabelli trait. Am J Phys Anthropol 1991;84:427-32.   DOI
7 Oh SC, Jung JH. Morphology and size of clinical crown of prrmanent upper anterior teeth in Korean adult. J Dent Rehabil Appl Sci 2001;17:37-42.
8 Muller HP, Eger T. Masticatory mucosa and periodontal phenotype: a review. Int J Periodontics Restor Dent 2002;22: 172-83.
9 Sterrett JD, Oliver T, Robinson F, Fortson W, Knaak B, Russell CM. Width/length ratios of normal clinical crowns of the maxillary anterior dentition in man. J Clin Periodontol 1999;26:153-7.   DOI
10 Dawson PE. Determining the determinants of occlusion. Int J Periodontics Restor Dent 1983;3:8-21.
11 Chiche GJ, Pinault A. Replacement of deficient crowns. J Esthet Dent 1993;5:193-9.   DOI
12 Wheeler RC. Complete crown form and the periodontium. J Prosthet 1961;11:722-34.   DOI
13 Ericsson I, Lindhe J. Recession in sites with inadequate width of the keratinized gingiva. An experimental study in the dog. J Clin Periodontol 1984;11:95-103.   DOI
14 An CH, Heo SR, Cho IH, Kim HS. Clinical features of the gingiva according to maxillary anterior teeth form in adult. J Korean Acad Periodontol 2005;35:359-69.   DOI
15 Oh SC. A study on morphology and size of clinical crown of permanent mandibular molar in Korean adult. J Korean Acad Prosthodont 1999;37:242-55.
16 Jeong DK, Kim KH, Park JM, Chang MT, Kim HS. A relationship between interdental papilla existence and the distance from contact point to interdental alveolar crest in the maxillary anterior dentition of Korean adults. J Korean Acad Periodontol 2001;31:633-40.   DOI
17 Kim SH, Chung HJ. The relationship between clinical crown form and gingival feature in upper anterior region. J Korean Acad Periodontol 2005;35:761-76.   DOI
18 Garn SM, Lewis AB, Kerewsky RS. Sex difference in tooth size. J Dent Res 1964;43:306.   DOI
19 Olsson M, Lindhe J. Periodontal characteristics in individuals with varying form of the upper central incisors. J Clin Periodontol 1991;18:78-82.   DOI
20 Olsson M, Lindhe J, Marinello CP. On the relationship between crown form and clinical features of the gingiva in adolescents. J Clin Periodontol 1993;20:570-7.   DOI
21 Muller HP, Heinecke A, Schaller N, Eger T. Masticatory mucosa in subjects with different periodontal phenotypes. J Clin Periodontol 2000;27:621-6.   DOI
22 Townsend GC, Brown T. Heritability of permanent tooth size. Am J Phys Anthropol 1978;49:497-504.   DOI
23 Nam JH, Lee KS. A study of mandibular dental arch form of the Korean with normal occlusion. Korean J Orthod 1996;26:535-46.
24 Paik KS, Kim KM. A statistical study on morphology and size of the maxillary cenrtral incisor in Korean adult. Korean J Oral Anat 1988;12:37-42.
25 Lundstrom A. Genetic aspects of variation in tooth width based on asymmetry and twin studies. Hereditas 1967;57:403-10.
26 Morrow LA, Robbins JW, Jones DL, Wilson NH. Clinical crown length changes from age 12-19 years: a longitudinal study. J Dent 2000;28:469-73.   DOI
27 Gillen RJ, Schwartz RS, Hilton TJ, Evans DB. An analysis of selected normative tooth proportions. Int J Prosthodont 1994;7:410-7.