Existence of golden proportion in maxillary anterior teeth of University of Malaya dental students

Sulaiman, Eshamsul; Yaakub, M S.; Zulkifly, N A; Abdullah, Maimon; Gonzalez, Maria Angela Garcia

doi:10.22452/adum.vol17no1.2

Cited by 9 publications

(10 citation statements)

References 12 publications

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“…Applying this to anterior teeth the lateral gauge central's 62 % and so canine the lateral 62 % (Sulaiman et al, 2010;Hasanreisoglu et al, 2005). Together, from central to canine the proportion must be 1.6:1:0.6 (Ricketts).…”

Section: Introductionmentioning

confidence: 99%

Mestizo Anterior Teeth's Proportions

Ramírez¹,

Ospina²,

Ballesteros³

2016

Int. J. Morphol.

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SUMMARY:Teeth proportions relate to beauty and harmony but aesthetic dental ideal proportion models show inconsistent results. Golden Proportion´s, Preston's, Fayyad's, Snow's, and Ward's models where characterized for best fit in a Colombian mestizo population anterior teeth. Models of teeth´s beauty proportions (Golden Proportion´s, Preston's, Fayyad's, Snow's, and Ward') are analyzed for best fit in a mestizo (mixed race) Colombian population and variables as sex, aesthetic balance or history of previous orthodontic treatments were also analyzed for their probable impact on the distribution of the dental proportions. It was used standardized photographs of anterior teeth on 351 individuals of both sexes with complete erupted and healthy teeth. The measurements were done by calibrated computer software (error of 0.05 mm). A Chi squared test was used to check whether sex, aesthetic balance and previous orthodontic treatment had an impact on the distribution of the dental proportions. Also a nonparametric Wilcoxon test was used to analysis the null hypothesis. A cluster analysis using k means was carried out to search for subgroups, which better explain the distribution of anterior dental proportions in the sample. For the considered results the null hypothesis of the mean equaling to the Golden Proportion was rejected (Wilcoxon test p value <0.001). For the whole population, the Chi squared test did not reject the null hypothesis of equal proportions among the groups with respect to the sex (p value= 0.56), aesthetic balance (p value= 0.98) and history of previous orthodontic treatments (p value= 0.67) variables. For the aesthetically balanced individuals, the Chi squared test also failed to reject the null hypothesis of equal proportions among the groups with respect to the sex (p value= 0.63) and history of previous orthodontic treatments (p value= 0.93) variables. Two Gaussian distributions were found for RED models fitting well in 58 % for RED 70 % (0.7 SD 0.03) and 42 % for RED 75 (0.75 SD 0.025). From the cluster analysis using k means, two groups were identified in the whole sample. No universal model can describe the whole population but is possible to find a set of models for the different population subgroups. Aesthetically ideals are open to interpretation. Clinical aesthetically standards for ideal teeth proportions are open to interpretation in a mestizo (mixed raced) population.

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Section: Introductionmentioning

confidence: 99%

Mestizo Anterior Teeth's Proportions

Ramírez¹,

Ospina²,

Ballesteros³

2016

Int. J. Morphol.

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“…Maxillary anterior tooth proportion has been proposed to be related to a golden proportion. [ 5 ] Levin was the first to assert the existence of the golden proportion. This proportion was employed to determine the relationship between maxillary anterior teeth width.…”

Section: Discussionmentioning

confidence: 99%

“…[ 4 ] Maxillary anterior teeth bear a significant effect in esthetic dentistry as their facial aspects are widely visible during smiling. [ 5 ]…”

Section: Introductionmentioning

confidence: 99%

The assessment of golden proportion in primary dentition

Mamidi

Vasa

et al. 2020

Contemp Clin Dent

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Background: Golden proportion is a constant ratio that exists in nature, responsible for the esthetic appeal of parts in the human body. The study was aimed to assess the existence of golden proportion in primary dentition by evaluating the average width and height ratio of maxillary anterior teeth. Materials and Methods: A total of 200 children comprising equal number of males and females aged 3–7 years with all deciduous teeth present were randomly selected. Each participant was photographed with head upright and occlusal plane parallel to floor. Distance between the participant and camera was fixed at a working distance of 60 cm. The digital images were analyzed using imaging software (Adobe V7), the perceived widths of maxillary laterals were divided by widths of central incisor and that of canines were divided by perceived widths of lateral incisor. Maxillary arch impressions were made and casts prepared. Measurement of each anterior tooth was done using digital calipers. The measured width of lateral incisor was divided by width of central incisor and that of canine was divided by measured width of lateral incisor. Perceived and measured widths were tabulated separately. Results: The mean measured lateral incisor-to-central incisor ratio was 0.80. The mean measured canine-to-lateral incisor ratio was 1.32. The mean perceived lateral incisor-to-central incisor ratio was 0.75. The mean perceived canine-to-lateral incisor ratio was 0.90. The mean measured width-to-height ratio of central incisors was 1.14. The mean perceived width-to-height of central incisors ratio was 1.08. No significant statistical difference was observed between measured widths, perceived widths, measured width-to-height ratio, and perceived width-to-height ratios for both the sexes. There was strong correlation between these ratios and golden ratio (0.62). Conclusion: The study revealed that the golden proportion was inconsistent in terms of relative tooth width in primary dentition.

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“…The golden proportion is one of the geometric proportions that have been suggested as a cornerstone in creation of pleasing smile [2]. Lombardi was the first who suggested the application of the golden proportion in dentistry in which the mesiodistal widths of maxillary lateral incisors to central incisors and the mesiodistal width of the maxillary canines to lateral incisors following a repeated ratio [3], Whereas Levin suggested the use of Golden proportion to relate the successive width of the maxillary anterior teeth in which the mesiodistal width of the maxillary central incisor should be in golden proportion to that of the lateral incisor and the mesiodistal width of maxillary lateral incisor should be in golden proportion to that of the canine, when viewed from the labial aspect [1].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Golden Proportion of Maxillary Anterior Teeth in Different Morphological Facial Types in A Sample of Class I Normal Occlusion (Photographic, Cross Sectional Study)

Al-Sheakli¹

2017

IOSR JDMS

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Existence of golden proportion in maxillary anterior teeth of University of Malaya dental students

Cited by 9 publications

References 12 publications

Mestizo Anterior Teeth's Proportions

Mestizo Anterior Teeth's Proportions

The assessment of golden proportion in primary dentition

Evaluation of Golden Proportion of Maxillary Anterior Teeth in Different Morphological Facial Types in A Sample of Class I Normal Occlusion (Photographic, Cross Sectional Study)

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