[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 1

Incidence of pericoronitis in patients with complex impacted mandibular teeth.

Indicator	Group A (n = 31)	Group B (n = 70)	t/χ^2
Age	24.3 ± 6.3	23.6 ± 6.3	0.517	0.606
Pericoronal blind pocket depth			13.690	<0.001
<3 mm	26 (83.9)	30 (42.9)
≥3 mm	5 (16.1)	40 (57.1)
Sex			0.046	0.829
Male	16 (51.6)	35 (50.0)
Female	15 (48.4)	35 (50.0)
Sleep situation			8.748	0.003
<8 h	7 (22.6)	39 (55.7)
≥8 h	24 (77.4)	31 (44.3)
Brushing times			10.420	0.001
<1 time/d	13 (41.9)	54 (77.1)
≥1 time/d	18 (58.1)	16 (22.9)
Physical exercise			7.443	0.006
Yes	9 (29.0)	40 (57.1)
No	22 (71.0)	30 (42.9)
Family medical history			13.330	<0.001
Yes	14 (45.2)	9 (12.9)
No	17 (54.8)	61 (87.1)