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3D Morphometric Analysis of Human Primary Second Molar Crowns and Its Implications on Interceptive Orthodontics

Author

Listed:
  • Alessandro Nota

    (Dental School, Vita-Salute San Raffaele University and IRCCS San Raffaele, 20132 Milan, Italy)

  • Vincenzo Quinzi

    (Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy)

  • Federico Floriani

    (Private Practice, 20122 Milan, Italy)

  • Clizia Cappelli

    (Private Practice, 20122 Milan, Italy)

  • Simona Tecco

    (Dental School, Vita-Salute San Raffaele University and IRCCS San Raffaele, 20132 Milan, Italy)

  • Giuseppe Marzo

    (Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy)

Abstract

The second primary molar represents an anchorage element in interceptive orthodontics. The present study aims to analyze the 3D morphology of primary second molars in order to provide reference data and implications about the development of orthodontic bands for second primary molars. Digital models of dental arches from 150 subjects in primary or mixed dentition were analyzed. Six dimensional variables were digitally measured for each second primary molar, and the mean and standard error of the mean (SEM) were calculated and compared applying Student t -test statistical analysis. The mean value results show statistically significant dimensional differences between the upper and lower teeth, (mostly p < 0.0001), except for the variable h1, while only the variable h1 showed significant differences between the antimetric teeth (left and right). The dimensional variations between the right and left molars were considerably minor compared to those found by comparing the upper and lower arches. A significantly higher dimension of the lower molars and a more rectangular shape were observed.

Suggested Citation

  • Alessandro Nota & Vincenzo Quinzi & Federico Floriani & Clizia Cappelli & Simona Tecco & Giuseppe Marzo, 2021. "3D Morphometric Analysis of Human Primary Second Molar Crowns and Its Implications on Interceptive Orthodontics," IJERPH, MDPI, vol. 18(12), pages 1-11, June.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:12:p:6201-:d:570967
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    References listed on IDEAS

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    1. Alessandro Nota & Luca Palumbo & Giuseppe Pantaleo & Enrico Felice Gherlone & Simona Tecco, 2020. "Developmental Enamel Defects (DDE) and Their Association with Oral Health, Preventive Procedures, and Children’s Psychosocial Attitudes towards Home Oral Hygiene: A Cross-Sectional Study," IJERPH, MDPI, vol. 17(11), pages 1-11, June.
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