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Maximal bite force, facial morphology and sucking habits in young children with functional posterior crossbite
Castelo, Paula Midori; Gavião, Maria Beatriz Duarte; Pereira, Luciano José; Bonjardim, Leonardo Rigoldi.
  • Castelo, Paula Midori; Federal University of São Paulo. Department of Biological Sciences. Diadema. BR
  • Gavião, Maria Beatriz Duarte; State University of Campinas. Piracicaba Dental School. Department of Pediatric Dentistry. Piracicaba. BR
  • Pereira, Luciano José; Federal University of Lavras. Department of Physiology. Lavras. BR
  • Bonjardim, Leonardo Rigoldi; Federal University of Lavras. Department of Physiology. Aracaju. BR
J. appl. oral sci ; 18(2): 143-148, Mar.-Apr. 2010. ilus, tab
Article in English | LILACS | ID: lil-550405
ABSTRACT
OBJETIVE The maintenance of normal conditions of the masticatory function is determinant for the correct growth and development of its structures. Thus, the aims of this study were to evaluate the influence of sucking habits on the presence of crossbite and its relationship with maximal bite force, facial morphology and body variables in 67 children of both genders (3.5-7 years) with primary or early mixed dentition. MATERIAL AND

METHODS:

The children were divided in four groups primary-normocclusion (PN, n=19), primary-crossbite (PC, n=19), mixed-normocclusion (MN, n=13), and mixed-crossbite (MC, n=16). Bite force was measured with a pressurized tube, and facial morphology was determined by standardized frontal photographs AFH (anterior face height) and BFW (bizygomatic facial width).

RESULTS:

It was observed that MC group showed lower bite force than MN, and AFH/BFW was significantly smaller in PN than PC (t-test). Weight and height were only significantly correlated with bite force in PC group (Pearson's correlation test). In the primary dentition, AFH/BFW and breast-feeding (at least six months) were positive and negatively associated with crossbite, respectively (multiple logistic regression). In the mixed dentition, breast-feeding and bite force showed negative associations with crossbite (univariate regression), while nonnutritive sucking (up to 3 years) associated significantly with crossbite in all groups (multiple logistic regression).

CONCLUSIONS:

In the studied sample, sucking habits played an important role in the etiology of crossbite, which was associated with lower bite force and long-face tendency.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Sucking Behavior / Bite Force / Face / Fingersucking / Malocclusion Type of study: Observational study / Prevalence study / Prognostic study / Risk factors Limits: Child / Child, preschool / Female / Humans / Infant / Male Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2010 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Federal University of Lavras/BR / Federal University of São Paulo/BR / State University of Campinas/BR

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Full text: Available Index: LILACS (Americas) Main subject: Sucking Behavior / Bite Force / Face / Fingersucking / Malocclusion Type of study: Observational study / Prevalence study / Prognostic study / Risk factors Limits: Child / Child, preschool / Female / Humans / Infant / Male Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2010 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Federal University of Lavras/BR / Federal University of São Paulo/BR / State University of Campinas/BR