Prevalence of the different maxillary central incisor shapes in individuals with natural normal occlusion

Authors

  • Luiz Renato Paranhos Methodist University of São Paulo
  • Renata Pilli Jóias Methodist University of São Paulo
  • Leandro Gonçalves Velasco São Leopoldo Mandic School
  • Fausto Bérzin State University of Campinas
  • Eduardo Daruge Júnior State University of Campinas

DOI:

https://doi.org/10.20396/bjos.v9i2.8641865

Keywords:

Perception of shape, Tooth, Shape

Abstract

Aim: To investigate the prevalence of crown shape in maxillary central incisors of individuals with natural normal occlusion. Methods: The sample consisted of 51 Caucasian individuals with natural normal occlusion, no history of previous orthodontic treatment, and at least four of Andrews’ six keys to normal occlusion. The images of the maxillary incisors generated from model scans were evaluated by 12 orthodontists. The Kappa test was applied to verify inter-examiner agreement with regard to classification of the central incisor shape. Results: The results of the Kappa test showed significant agreement for tooth shape. The following prevalences were observed: ovoid (47.06%), square (31.37%) and triangular (21.57%). Conclusions: The choice and use of one of these three shapes when selecting teeth for prosthetic rehabilitation (total and partial dentures) can contribute significantly to obtaining an improved facial harmony and balance. Ovoid-shaped teeth should be “stocked” in greater quantities than other tooth shapes.

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Author Biographies

Luiz Renato Paranhos, Methodist University of São Paulo

DDS, MSc, PhD, Postgraduate Program in Dentistry, Orthodontics Area, Methodist University of São Paulo

Renata Pilli Jóias, Methodist University of São Paulo

DDS, MSc, Postgraduate Program in Dentistry, Orthodontics Area, Methodist University of São Paulo

Leandro Gonçalves Velasco, São Leopoldo Mandic School

Oral and Maxillofacial Surgery Specialist, Graduate student, Postgraduate Program in Dentistry, São Leopoldo Mandic School

Fausto Bérzin, State University of Campinas

DDS, MSc, PhD, Department of Buccodental Biology, Piracicaba Dental School, State University of Campinas

Eduardo Daruge Júnior, State University of Campinas

DDS, MSc, PhD, Department of Buccodental Biology, Piracicaba Dental School, State University of Campinas

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Published

2015-11-25

How to Cite

1.
Paranhos LR, Jóias RP, Velasco LG, Bérzin F, Daruge Júnior E. Prevalence of the different maxillary central incisor shapes in individuals with natural normal occlusion. Braz. J. Oral Sci. [Internet]. 2015 Nov. 25 [cited 2022 Sep. 28];9(2):104-7. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641865

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