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Table 1 Baseline characteristics of subjects in the two groups

From: The incidence and severity of open gingival embrasures in adults treated with clear aligners and fixed appliances: a retrospective cohort study

 

Clear aligners (n = 100)

Fixed appliances (n = 100)

P value

Age (Mean ± SD, yrs)

25.13 ± 4.11

24.14 ± 3.51

0.068

Treatment time (Mean ± SD, month)

26.39 ± 7.67

25.72 ± 9.71

0.589

Gender (N, %)

  

0.451

 Male

15 (15.0%)

19 (19.0%)

 

 Female

85 (85.0%)

81 (81.0%)

 
  1. Independent t-tests were used to compare age and treatment time between the clear aligner and fixed appliance group. A chi-square test was used to compare gender distribution between the two groups
  2. SD Standard deviation
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Head & Face Medicine

ISSN: 1746-160X

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