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J Appl Oral Sci. 2018 Nov 8;27:e20180088. doi: 10.1590/1678-7757-2018-0088.

Correlation of salivary immunoglobulin A with Body Mass Index and fat percentage in overweight/obese children.

Author information

1
Universidade Cruzeiro do Sul, Programa de Pós-Graduação em Odontologia, São Paulo, São Paulo, Brasil.
2
Universidade de São Paulo, Faculdade de Odontologia, Departamento de Ortodontia e Odontopediatria, São Paulo, São Paulo, Brasil.
3
Universidade Cruzeiro do Sul, Programa Interdisciplinar de Pós-Graduação em Ciências da Saúde, Instituto de Ciências da Atividade Física e Esporte, São Paulo, São Paulo, Brasil.

Abstract

Obesity is considered a risk factor for periodontal health due to the low- grade inflammation promoted by the increased adipose tissue.

OBJECTIVE:

This study aimed to determine correlations and associations between gingival inflammation (Simplified Oral Hygiene Index, and Gingival Index), salivary immunoglobulin A (s-IgA), and salivary parameters (salivary flow and osmolality) in normal-weight and overweight/obese children.

MATERIAL AND METHODS:

Ninety-one children, aged 6 to 12 years old (8.6±1.9 years), were divided into two groups according to their body mass index (BMI), circumferences, skinfold measurements and body fat percentage: normal- weight group (NWG; n =50) and overweight/obese group (OG; n =41). A calibrated examiner performed the clinical examination using the Simplified Oral Hygiene Index, Gingival Index, and salivary collection. Data analysis included descriptive statistics and association tests ( p <0.05).

RESULTS:

OG presented statistically higher s-IgA values compared with NWG, especially among the obese children ( p <0.05). Significant positive correlations between s-IgA and salivary osmolality in OG ( p <0.05), and between s-IgA and BMI values ( p <0.05) and body fat percentage ( p <0.05) were observed among all the children. Effect size varied from moderate for s-IgA values ( d =0.57) to large for BMI ( d =2.60).

CONCLUSION:

Gingival inflammation and salivary parameters were similar for NWG and OG; however, s-IgA presented higher values in OG, with correlations between BMI and body fat percentage.

PMID:
30427474
PMCID:
PMC6223782
DOI:
10.1590/1678-7757-2018-0088
[Indexed for MEDLINE]
Free PMC Article

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