Symmetrical comparison of crown size, morphology and gingival shape in maxillary incisors




Central incisor, Crown size, Gingival shape, Maxillary incisors


Background: Maxillary anterior tooth proportion has special value in dental aesthetics. Restorative dentistry often involves correcting tooth size discrepancies. Therefore, dental biometrics should play an important role in the planning of an aesthetic restoration.
Objectives: To assess and compare clinical crown dimensions and classify crown shape and gingival shape of the maxillary incisors in order to collect anatomical data on the anterior teeth of young population visiting the tertiary centre.
Methods: This descriptive cross-sectional study conducted in department of Prosthodontics in November 2021 after getting ethical approval among dental students and patients attending the hospital, with permanent healthy dentitions. Impression of maxillary and mandibular arches were made with alginate and poured in dental stone. Measurement of maxillary central incisors was done for length and thickness with the digital vernier calliper. Convenience sampling was done. Data were recorded and analysis done with SPSS v.20.
Results: The mean value of crown length, crown thickness, mesiodistal width of left central incisor was greater compared to the right side (Left vs Right: 9.01 ± 1.14 mm vs 9 ± 1.14 mm , 7.04 ± 0.67 mm vs 6.96 ± 0.61 mm, 8.25 ± 0.59 mm vs 8.20 ± 0.51 mm).
Conclusion: Crown length and crown width of maxillary left central incisor were greater compared to maxillary right central incisor. Shape of maxillary incisors determines the shape of the gingiva. The average values of length and widths of the central incisors derived from this study can be a valuable template for prosthodontic and aesthetic planning.


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Shrestha P, Paudel S, Neupane M, Lamba S. Anterior tooth width measurements among patients in a tertiary hospital of Nepal: A descriptive crosssectional study. J Nepal Med Assoc. 2020;58(226):396- 9. [PubMed | Full Text | DOI]

Yin XJ, Wei BY, Ke XP, Zhang T, Jiang MY, Luo XY, et al. Correlation between clinical parameters of crown and gingival morphology of anterior teeth and periodontal biotypes. BMC Oral Health. 2020;20:1-8. [PubMed | Full Text | DOI]

Ngoc VTN, Tran DK, Dung TM, Anh NV, Nga VT, Anh LQ, et al. Perceptions of dentists and non-professionals on some dental factors affecting smile aesthetics: A study from Vietnam. Int J Environ Res Public Health. 2020;17(5):1638. [PubMed | Full Text | DOI]

Ahmed N, Abbas, Abbas AM, Maqsood A. Evaluation of recurring aesthetic dental proportion in natural smile of Pakistani sample. Pak Oral Dent J. 2014;34:739-42. [Full Text]

Cooper GE, Tredwin CJ, Cooper NT, Petrie A, Gill DS. The influence of maxillary central incisor height-towidth ratio on perceived smile aesthetics. Br Dent J. 2012 Jun 22;212(12):589-99. [PubMed | Full Text | DOI]

Chou YH, Tsai CC, Wang JC, Ho YP, Ho KY, Tseng CC. New classification of crown forms and gingival characteristics in Taiwanese. Open Dent J. 2008;2:114- 9. [Full Text | DOI]

Bhat V, Shetty S. Prevalence of different gingival biotypes in individuals with varying forms of maxillary central incisors: A survey. J Dent Implant. 2013;3(2):116-21. [Full Text]

Song JW, Leesungbok R, Park SJ, Chang SH, Ahn AJ, Lee SW. Analysis of crown size and morphology, and gingival shape in the maxillary anterior dentition in Korean young adults. J Adv Prosthodont. 2017;9:315- 20. [PubMed | Full Text | DOI]

Magne P, Gallucci GO, Belser UC. Anatomic crown width/length ratios of unworn and worn maxillary teeth in white subjects. J Prosthet Dent. 2003;89(5):453-61. [PubMed | Full Text | DOI]

Townsend GC, Brown T. Heritability of permanent tooth size. Am J Phys Anthropol. 1978;49:497-504. [PubMed | Full Text | DOI]

Vadavadagi SV, Hombesh MN, Choudhury GK, Deshpande S, Anusha CV, Murthy DK. Variation in size and form between left and right maxillary central incisor teeth. J Int Oral Health. 2015;7(2):33-6. [PubMed | Full Text]

Alqahtani AS, Habib SR, Ali M, Alshahrani AS, Alotaibi NM, Alahaidib FA. Maxillary anterior teeth dimension and relative width proportion in a Saudi subpopulation. J Taibah Uni Med Sci 2021;16(2):209- 16. [PubMed | Full Text | DOI]

Melo M, Ata-Ali F, Huertas J, Cobo T, Shibil JA, Galindo-Moreno P, Ata-Ali J. Revisiting the maxillary teeth in 384 subjects reveals a deviation from the classical aesthetic dimensions. Sci Rep. 2019;9(1):730. [PubMed | Full Text | DOI]

Kulshrestha R, Agarwal K, Kant A, Singh K, Singh D, Kant R. Evaluation of golden proportion in north Indian individuals with an aesthetic smile. J Dent Oral Care Med. 2019;3(1):1-5. [Full Text | DOI]

Al-Marzok, Abdul Majeed KR, Ibrahim KI. Evaluation of maxillary anterior and their relation to the golden proportion in Malaysian population. BMC Oral Health. 2013;13:9. [PubMed | Full Text | DOI]

Sah SK, Zhang HD, Chang T, Dhungana M, Acharya L, Chen LL, et al. Maxillary anterior teeth dimensions and proportions in a central mainland Chinese population. Chin J Dent Res. 2014;17(2):117-24. [PubMed | Full Text | DOI]




How to Cite

Ghimire, B., & Dhital, S. (2022). Symmetrical comparison of crown size, morphology and gingival shape in maxillary incisors. Journal of Kathmandu Medical College, 11(1), 27–31.



Original Research Articles