[Retracted] Correlation of Complex Impacted Mandibular Teeth with Pericoronitis and Effect of Minimally Invasive Tooth Extraction on Patients’ Long-term Outcome of Masticatory Ability

Table 2

Comparison of clinical data.

Indicator	Control group (n = 55)	Observation group (n = 46)	t/χ^2
Age	24.9 ± 6.9	23.1 ± 5.5	1.429	0.156
Pericoronal blind pocket depth			0.327	0.567
<3 mm	30 (54.5)	26 (56.5)
≥3 mm	25 (45.5)	20 (43.5)
Sex			0.241	0.624
Male	29 (52.7)	22 (47.8)
Female	26 (47.3)	24 (52.2)
Sleep situation			0.676	0.411
<8 h	27 (49.1)	19 (41.3)
≥8 h	28 (50.9)	27 (58.7)
Brushing times			0.047	0.828
<1 time/d	35 (63.6)	32 (69.6)
≥1 time/d	20 (36.4)	14 (30.4)
Physical exercise			0.241	0.624
Yes	29 (52.7)	20 (43.5)
No	26 (47.3)	26 (56.5)
Family medical history			0.528	0.468
Yes	11 (20.0)	12 (26.1)
No	44 (80.0)	34 (73.9)
Pericoronitis			0.018	0.893
Yes	15 (27.3)	16 (34.8)
No	40 (72.7)	30 (65.2)