Table 1: Characteristics of some of the studies included in this paper.

Author, Country and Year Goals Databases Keywords Sample Size Type of Study Factors Associated with Atopic Dermatitis
Yamaguchi H et al.
Japan, 2015
To evaluate if mouth breathing is associated with other types of diseases including atopic dermatitis through a questionnaire aimed at pre-school children in day care centers PubMed; Google Scholar Atopic dermatitis; mouth 468 children
Age: 2-6 years old
-59 children with atopic dermatitis;
-46 children with asthma;
-61 children with allergic rhinitis
Sectional Daytime and nighttime (during sleep) mouth breathing in children with AD was associated with: history of allergic rhinitis, history of asthma, and family history of atopic dermatitis
Javad G et al.
Iran, 2015
To verify the colonization of Candida and the specific humoral response against Candida albicans in patients with atopic dermatitis PubMed Atopic dermatitis; mouth; oral pathology - 100 patients with AD
- mean age of 12.1 ± 11.5 years old;
- 50 healthy subjects (control group) with a mean age of 39.9 ± 11.45 years old
Sectional There was no statistically significant difference in relation to: Candida colonization in patients with atopic dermatitis and those in the control group; and between the IgM and IgA serum levels of the patients and controls.
Candida was isolated from the oral cavity of 23% of the patients with AD and 6% of the individuals in the healthy group.
Leibovici V     et al.
Israel, 2007
To determine the presence of Candida in the following locations: armpit, tongue and groin of patients with psoriasis and compared to patients with atopic dermatitis and normal controls. PubMed Atopic dermatitis; mouth; dental disorders - 100 adult patients with psoriasis aged from 18 to 84 years old;
- 100 adult patients with AD aged from 18 to 83 years old;
- 100 normal controls aged from 18 to 80 years old
Sectional Low prevalence of Candida on the tongue of patients with atopic dermatitis (18%) compared to patients with psoriasis (32%) and normal controls (21%).
Igawa K, Nishioka K, Yokozeki H
Japan, 2007
To verify if a odontogenic focal infection is an aggravating factor in atopic dermatitis PubMed Atopic dermatitis, mouth; dental disorders - 43 adolescent and adult patients aged from 13 to 62 years old and with chronic AD Cohort Patients with AD and an odontogenic focal infection had a greater improvement after 3 months of dental treatment compared to patients who did not have odontogenic focal infection but who received dental treatment.
Mizawa M     et al.
Japan, 2013
To evaluate salivary cortisol levels in patients with atopic dermatitis and to compare them with a healthy control group PubMed Atopic dermatitis - 30 patients with AD aged from 15 to 62 years old;
- 42 systematically healthy individuals aged from 31 to 54 years old
(group control)
Sectional The salivary cortisol levels of patients with atopic dermatitis were significantly higher than those of the control group
Perugia C
et al.
Italy, 2015
Verify the possible correlation between atopic dermatitis and oral manifestations in pediatric patients; PubMed Atopic dermatitis; caries 300 children
(from 2 to 17 years old)
- 90 children (30%) with AD;
-210 children without AD
Sectional Children with AD
- medical history of spoil habit (76%);
- presence of dental caries (56%);
- dental malocclusion (64.4%).