Obesity is an abnormal accumulation of body fat. This accumulation of extra fat within the
body may have either environmental or genetic causes . Obese children and adolescents are at
increased risk for developing diabetes, metabolic problems, high blood pressure hypertension,
coronary artery disease, sleep apnea, orthopedic problems, and psychosocial disorders.
Body mass index is the definition of obesity for children and adolescents. It is a formula
that considers an individual's height and weight to determine body fat and health risk. For
children it is calculated by this formula: weight ÷ (height x height).
For children and teens, BMI is age- and sex-specific and is often referred to as BMI-for-age.
A child's weight status is determined using an age- and sex-specific percentile for BMI
rather than the BMI categories used for adults. This is because children's body composition
varies as they age and varies between boys and girls. Therefore, BMI levels among children
and teens need to be expressed relative to other children of the same age and sex.
Obesity and dental caries are multifactorial conditions, both having comprehensive etiology
and factors such as dietary habits and available nutrients, oral hygiene, or saliva . Changes
in diet and lifestyle, such as an increase in wealth and access to carbohydrate-rich,
high-calorie food and drinks could be attributed to the increase in the prevalence of both
dental caries and obesity.
Several studies have evaluated the relationship between tooth decay and obesity; however,
results are sometimes contradictory but recent studies showed that underweight children may
experience higher dental caries than normal weight and overweight children.
Dental eruption is the emergence of the tooth into the oral cavity from its position in the
alveolar crypt, and this process is influenced by genetic, systemic, general and local
factors. It is positively related to the somatic growth (height and weight) of an individual.
Many studies worldwide describe how poor nutrition during the growth period adversely
influences aspects of dental development, including delaying the eruption of deciduous and
permanent teeth in underweight children than normal and overweight children. Postnatal growth
and nutritional status have been linked to the eruption of primary teeth however; the studies
assessing the association of obesity and permanent tooth development are few.
This complicated relation between oral health and body composition must be taken into
consideration when treating children, hence the aim of this study is to identify if there is
any relationship between dental caries and dental eruption with body mass index.
