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Table 3 Gingival health evaluation

From: Comparing zirconia to anterior strip crowns in primary anterior teeth in children: a randomized clinical trial

Chi-square test

Zirconia crowns

Strip crowns

p-value

Gingival Health (assessed as bleeding on probing)

   

At 3 months

24 (40.0%)

40 (66.7%)

0.006a

At 6 months

0 (100.0%)

28 (46.7%)

 < 0.001a

At 12 moths

0 (100%)

0 (100%)

N/Ac

Friedman test

Mean rank

Total cases

Zirconia crown

Strip crown

Baseline

3.61

3.80

3.43

At 3 months

2.68

2.59

2.77

At 6 months

2.09

1.80

2.37

At 12 moths

1.61

1.80

1.43

p-value

 < 0.001b

 < 0.001b

 < 0.001b

  1. aSignificant using Chi-Square Test @ < 0.05 level
  2. bSignificant using Friedman Test @ < 0.05 level
  3. cNo statistics are computed because variable is a constant
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BMC Oral Health

ISSN: 1472-6831

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