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rev port estomatol med dent cir maxilofac . 2018;59(1):10-17 13

In which sites of the oral cavity appear aphthae?

Frequency
Figure 2. Distribution of aphthae by localization in the oral cavity

reporting 1 to 5 lesions (95.8%), located in the jugal/labial Approximately 46.4% of participants had a family history
mucosa (67.3%) (Figure 2) and taking 4 to 7 days to heal of RAS (Figure 3), mainly on the mother’s side. Around 29.6%
(92.8%). of the students associated the presence of aphthae with trau-
The most frequent answer (33.7% of children; 37.4% of par- matic events on the oral mucosa (Table 3), showing an odds
ents) to the pain scale used in the questionnaire was number ratio of 36.0 (13.010;99.617), i.e., the likelihood of parents per-
3 – moderate pain (Table 2). The chi-square test was used to ceiving aphthae as occurring in children after an injury to the
analyze the association between the children’s and parents’ oral cavity was 36 times higher when their children also con-
answers, which were in agreement (p-value <0.01%). sidered it compared to when they did not. On the other hand,

Table 3. Aphthae occurrence after trauma in the oral cavity / stress episodes
Do you think aphthae occur mainly

After your child injures one When your child is more
area of the oral cavity? anxious/nervous?

No Yes Total No Yes Total

No/Expected 108/87,3 6/26,7 114/114,0 No/Expected 145/134,4 2/12,6 147/147,0
Do you have Count Do you have Count
aphthae aphthae
after hurting Yes/Expected 16/36,7 32/11,3 48/48,0 when you Yes/Expected 4/14,6 12/1,4 16/16,0
an area of Count are more Count
your mouth? Total/Expected anxious or Total/Expected
nervous?
Count 124/124,0 38/38,0 162/162,0 Count 149/149,0 14/14,0 163/163,0