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Journal of Indian Society of Pedodontics and Preventive Dentistry Official publication of Indian Society of Pedodontics and Preventive Dentistry
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Year : 2015  |  Volume : 33  |  Issue : 1  |  Page : 19-24

Non-nutritive sucking habits after three years of age: A case-control study

Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Brazil

Correspondence Address:
Izabella Barbosa Fernandes
324 Paulino Guimarăes Júnior Street, 39100-000, Diamantina, MG
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Source of Support: Research Foundation of Minas Gerais State (FAPEMIG), Conflict of Interest: None

DOI: 10.4103/0970-4388.148965

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Background: Non-nutritive sucking habits can result in negative consequences on the development of orofacial structures and occlusion. Aim: Assess factors associated with non-nutritive sucking habits in children after 3 years old. Materials and Methods: A case-control study was carried out in two stages. In the first stage, a cross-sectional study was conducted with 638 children aged 3-6 years. In the second stage, a case-control study (1:2) was conducted. The case group included all children who presented some non-nutritive sucking habits in the first stage of the study (n = 110). The control group (n = 220) was made up of children who had never presented non-nutritive sucking habits, matched to the case group for gender and age. The data were collected during the national poliomyelitis vaccination campaign, through a questionnaire applied to parents/guardians with questions related to the presence of sucking habits, sociodemographic aspects, birth aspects, and early life of the child. Statistical analysis involved descriptive analysis, chi-square test, Mann-Whitney test, and conditional logistic regression. Results: Reduction in maternal education was a protective factor for the development of non-nutritive sucking habits (education ≤8 years OR = 0.38, CI 95%: 0.16, 0.89, P = 0.025). Prematurity (OR = 3.30, CI 95%: 1.13, 9.69, P = 0.030) and a longer period using a baby bottle (OR = 1.03, CI 95%: 1.01, 1.05, P = 0.006) remained associated with a greater possibility of the occurrence of sucking habits, regardless of monthly family income. Conclusion: Non-nutritive sucking habits were associated with maternal education, premature birth, and greater time of bottle feeding in children after 3 years old.


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