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Use of 3D stereophotogrammetry for volumetric analyses and image superposition of dental arches before and after surgery of individuals with unilateral and bilateral cleft lip and palate

Grant number: 17/02706-9
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): May 01, 2017
Effective date (End): April 30, 2021
Field of knowledge:Health Sciences - Dentistry - Pediatric Dentistry
Principal researcher:Thais Marchini de Oliveira Valarelli
Grantee:Eloá Cristina Passucci Ambrosio
Home Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil


The aim of this study was to perform the longitudinal anthropometric three-dimensional evaluation to analyse the volumetric dimensional changes and the image superposition of the dental arches of children with unilateral and bilateral cleft lip and palate before and after primary plastic surgeries. The sample will comprise 250 digitized dental casts of children with unilateral complete cleft lip (Group 1), bilateral complete cleft lip (Group 2), unilateral cleft lip and palate (Group 3) and bilateral cleft lip and palate (Group 4). The children will be evaluated at 3 months, one year, and two years of age. The measurements of the dental arch dimensions will be executed directly on the three-dimensional image of the dental casts digitized by a laser scanner system, and the measurements will be executed through the software of the 3D stereophotogrammetry system. The linear, superficial, volumetric measurements and image superposition of the dental arches before and after surgeries will be obtained by a single examiner previously calibrated. Paired t test and Dahlberg's formula will be applied to evaluate the method error. The independent t test and ANOVA followed by Tukey test will be used to verify the alterations occurred among groups. If necessary, other statistical tests will be applied. The level of significance of 5% will be applied to consider statistically significant differences. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
AMBROSIO, ELOA CRISTINA PASSUCCI; SFORZA, CHIARELLA; DE MENEZES, MARCIO; CARRARA, CLEIDE FELICIO CARVALHO; SOARES, SIMONE; MACHADO, MARIA APARECIDA ANDRADE MOREIRA; OLIVEIRA, THAIS MARCHINI. Prospective cohort 3D study of dental arches in children with bilateral orofacial cleft: Assessment of volume and superimposition. International Journal of Paediatric Dentistry, v. 31, n. 5, p. 606-612, SEP 2021. Web of Science Citations: 0.

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