Avaliação da correlação da interposição lingual e ou hábitos de sucção e maloclusões na dentição decídua e mista

: estudo preliminar de uma amostra de pacientes odontopediátricos na Clínica Dentária da UCP

Abstract

Introduction: The craniofacial growth and development is a result of the interaction of genetic, hormonal and neurological mechanisms, influenced by local factors, such as oral habits. Normal occlusion depends on adequate growth of the face as well as teeth angulations and morphology, mastication muscles and functional movements. The influence of local factors can lead to bone deformities, malocclusion, and changes in functions such as breathing, chewing, swallowing, sucking and diction. Thus, it is relevant the prevention of correlated potential deformities by means of early diagnosis and preventive/interceptive treatment. The main aim of this study is the evaluation of a possible correlation between sucking habits and tongue thrusting and malocclusion on the stage of deciduous and mixed dentition. Materials and methods: For this study a sample was selected from the patients who attended to the Pediatric consults of Dental Clinic of Universidade Católica Portuguesa – Pólo de Viseu, between February 14 and June 21. After applying the inclusion and exclusion criteria, was selected a 68 patients sample. For data collection was developed a questionnaire which includes parameters aimed to establish a correlation between variables, which comparison was not described. This questionnaire allowed to assess if patients were breast-fed and for how long, if children were bottle-fed, if had sucking habits and its duration, if they had labial or tongue thrust at rest or during swallow, the breathing pattern, the presence of tonsils and adenoids, overbite and overjet, the presence of openbite or crossbite, and the molar and canine Angle Class. The statistical analysis was performed using the Chi-Square Test, the Cramer’s V Coefficient and the Odds Ratio, using SPSS 17.0 program. Were considered significant the values which the significance level was less than 5% (p< 0,05). Results and Conclusion: There was a statistically significant correlation between tongue thrust during swallow and diminished overbite (p=0,008); breastfeeding and nasal breathing (p=0,044); breastfeeding duration and oral habits development (0,003); and nasal breathing and crossbite (p=0,035).

Date of Award	13 Nov 2011
Original language	Portuguese
Awarding Institution	Universidade Católica Portuguesa
Supervisor	Jorge G. M. Leitão (Supervisor) & Pedro Braga (Co-Supervisor)