Scholarship 11/04589-3 - Ortodontia corretiva, Enxerto ósseo - BV FAPESP
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Alveolar bone morphology at superior canine region moved to the region of a missing lateral incisor in patients with grafted unilateral cleft

Grant number: 11/04589-3
Support Opportunities:Scholarships in Brazil - Master
Start date until: August 01, 2011
End date until: December 31, 2012
Field of knowledge:Health Sciences - Dentistry - Orthodontics
Principal Investigator:Daniela Gamba Garib Carreira
Grantee:Marília Sayako Yatabe Ioshida
Host Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil

Abstract

The purpose of this research was to assess the buccal and lingual periodontal morphology of the permanent canine moved to the grafted region in unilateral alveolar clefts with commitment of the alveolar bone by measuring images of cone-beam computed tomography (CBCT) exams. These values were compared to the canine and lateral incisor present in the non-clefted side. The sample comprised CBCT exams of 30 patients with unilateral cleft lip and/or palate during retention period after orthodontic treatment. The protocol used for the CBCT exam was FOV of 6cm, voxel of 0,25mm for 26.9 seconds. The exams were assessed by one orthodontist two times with an interval of 30 days to assess intraoperator reliability. The standard position of the head was determined with the palatal plane parallel to the horizontal plane. Axial slices of the trifurcation of the right permanent molar were obtained to assess the buccal and lingual alveolar bone thickness of the canine in the clefted side (CF), the canine in the non-clefted side (CsF) and the lateral incisor in the non-clefted side (IL). To assess the buccal and lingual bone crest height, parassagital slices were obtained passing through the center of the crown of each evaluated teeth. It was calculated the distance form the cemento-enamel junction (CEJ) to the buccal and lingual alveolar bone crest. The comparison among the CF values with the CsF and IL was performed with the t test or the Wilcoxon test, depending on the distribution of normality. The buccal alveolar bone thickness of the CF is statistically thinner than the buccal alveolar bone thickness of the CsF (p=0,002) and of the IL (p=0,001). Other than that, the distance between the CEJ and the alveolar crest was significant higher for the CF (p<0,001). The movement of the upper permanent canine to the grafted alveolar consists in a viable therapeutic option. However, the orthodontic treatment demands caution, including a very slow movementation and the verification of the quality of the keratinized mucosa. (AU)

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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
IOSHIDA, Marília Sayako Yatabe. Periodontal morphology of maxillary canines orthodontically moved to the grafted alveolar cleft: a Cone-Beam Computed Tomography assessment. 2012. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Odontologia de Bauru (FOB/SDB) Bauru.

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