**3. Results**

According to the obtained data the presence of type D personality was confirmed in 160 participants (53.3%). The results of the assessment of the presence of type D personality in the P1 and P2 groups are presented below (Table 1).

**Table 1.** The occurrence of type D personality in groups P1 and P2.


As it can be seen from Table 1 as many as 70% of the respondents in the group with symptoms of SSDs (P2) had type D personality, whereas in the asymptomatic group (P1) this result was 23.3%. There was a significant difference between the groups (*p* = 0.000). Comparing the occurrence of symptoms of SS disorders between people with and

without type D personality, the following results were obtained (Table 2).

**Table 2.** The occurrence of symptoms of SS disorders in students with and without type D personality.


The results presented in Table 2 show that people with type D personality experienced symptoms of SS disorders more frequently than in the group without distressed personality traits. There was a significant difference between the groups regarding all

the examined symptoms. In the group of people with D personality, the most frequently reported symptoms of SSDs included: headache, pain in the neck and shoulder girdle, and teeth clenching.

As shown in Table 3, significantly higher values of both type D personality components were observed in women than in men with symptoms of SS disorders.

**Table 3.** Comparison of type D personality components (NA and SI) in group P2 in relation to gender.


Below in Figures 1 and 2 the analysis of both dimensions of type D personality in relation to symptoms of SSDs is presented.

**Figure 1.** Analysis of the negative affectivity (NA) in relation to the symptoms of SSDs. Legend: 1—TMJ Pain, 2—Headache, 3—Pain in the neck and shoulder girdle, 4—Facial pain, 5—TMJ acoustic symptoms, 6—TMJ blocking, 7—Teeth clenching, 8—Teeth grinding, 9—Increased masticatory muscles tension.

**Figure 2.** Analysis of the social inhibition (SI) in relation to the symptoms of SSDs. Legend: 1—TMJ Pain, 2—Headache, 3—Pain in the neck and shoulder girdle, 4—Facial pain, 5—TMJ acoustic symptoms, 6—TMJ blocking, 7—Teeth clenching, 8—Teeth grinding, 9—Increased masticatory muscles tension.

Figures 1 and 2 present the results obtained after the analysis of NA and SI occurrence in relation to the reported symptoms of SSDs. In people reporting symptoms of SS disorders, higher average values were observed in both dimensions that make up the type D personality (NA and SI). There was a significant difference between people with and without symptoms. In the symptomatic group, the average NA scores are higher than SI.
