Study on the Classification of Clinical Crown of Youth Maxillary Central Incisors.

doi:10.11839/kqyxzh.2016.01.016

Abstract

Abstract: Objective: To evaluate the applicability of the Tufts University Clinical Crown Classification Index to the youth maxillary central incisors in Nanjing, China, and compare the contact area positions of each classification. Methods: Digital photography was used to get 114 maxillary central incisor samples. According to the Index, all samples were divided into 3 groups: triangle, round and square types. Then the crown length (CL), width (CW), contact surface (CS), gingival angle (GA) were tested by Digimizer. Results: There was significant difference among 3 groups with respect to CS/CL ratios, CW/CL ratios and GA values. Conclusion: The Tufts University Clinical Crown Classification Index is applicable to the youth maxillary central incisors in Nanjing, China. The contact area of triangle group is lower than the other two groups.

CLC Number:

R781.2

LIN Zi-qi, FANG Hui-min, ZHANG Wei, CAO Yang, YU Qing.. Study on the Classification of Clinical Crown of Youth Maxillary Central Incisors.[J]. Journal of Oral Science Research, 2016, 32(1): 63-66.

References

[1] Gobbato L, Tsukiyama T, Levi PA Jr, et al. Analysis of the shapes of maxillary central incisors in a Caucasian population [J]. Int J Periodontics Restorative Dent, 2012, 32(1)∶69-78
[2] Müller H, Eger T. Gingival phenotypes in young male adults [J]. J Clin Periodontol, 1997, 24(1)∶65-71
[3] Stein J M, Lintel-Hping N, Hammcher C, et al. The gingival biotype: Measurement of soft and hard tissue dimensions - a radiographic morphometric study [J]. J Clin Periodontol, 2013, 40(12)∶1132-1139
[4] Kois JC. Predictable single tooth peri-implant esthetics:five diagnostic keys [J]. Compend Contin Educ Dent, 2001, 22(3)∶199-208
[5] Chou YH, Tsai CC, Wang JC, et al. New Classification of Crown Forms and Gingival Characteristics in Taiwanese [J]. Open Dent J, 2008, 2(1)∶114-119
[6] 张秋霞,王蒙,贾筱诗,等.河南省青年人上前牙区游离龈和牙龈乳头的形态[J].郑州大学学报:医学版, 2014,04期∶533-535
[7] Olsson M, Lindhe J, Marinello CP, et al. On the relationship between crown form and clinical features of the gingival in adolescents [J]. J Clin Periodontol,1993,20(8)∶570-577
[8] 周芷萱,沈铭, 陆胜男,等.上前牙牙冠、牙槽嵴顶骨缘和牙龈形态的比较研究[J].中华口腔医学杂志,2013, 48(4)∶211-215
[9] 张豪,乐迪,胡文杰,等.120例中国青年健康上前牙牙龈曲线形状特征分析[J].北京大学学报:医学版,2013,(1)∶54-58
[10] Stellini E, Comuzzi L, Mazzocco F, et al. Relationships between different tooth shapes and patient's periodontal phenotype [J]. J Periodontal Res, 2013, 48(5)∶657-662
[11] Kai R Fischer, Eva Grill, Yvonne Jockel‐Schneider, et al. On the relationship between gingival biotypes and supracrestal gingival height, crown form and papilla height [J]. Clin Oral Implants Res, 2014, 25(8)∶894-898
[12] 谢光远,陈吉华.中国汉族男性上前牙牙龈形态的聚类分析研究[J].中国美容医学,2007,16(3)∶380-382
[13] Kurth J, Kokich V.Open gingival embrasures after orthodontic treatment in adults: prevalence and etiology [J]. Am J Orthod Dentofacial Orthop, 2001, 120(2)∶116-123
[14] Nagaraj KR, Savadi RC, Savadi AR, et al. Gingival biotype - Prosthodontic perspective [J]. J Indian Prosthodont Soc, 2010, 10(1)∶27-30
[15] Min-Chieh C, Yu-Fang L, Chiu-Po C, et al. Factors influencing the presence of interproximal dental papillae between maxillary anterior teeth [J]. J Periodontol, 2010, 81(2)∶318-324
[16] Gobbato L, Paniz G, Mazzocco F, et al. Significance of crown shape in the replacement of a central incisor with a single implant-supported crown [J]. Quintessence Int, 2013, 44(5)∶407-413
[17] 刘明丽,陈小冬,王勇.101例中国东北汉族上颌中切牙几何特征的研究[J].口腔医学研究,2012,28(6)∶594-597