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Table 3 Dental health components of IOTN grades

From: The prevalence of malocclusion and the need for orthodontic treatment among adolescents in the northern border region of Saudi Arabia: an epidemiological study

DHC Grade

Need for Treatment

Males

Females

Total

Percentage

Chi-square

P-value

Grade 1 and 2

No need for treatment

135(48.73%)

112(50.22%)

247

49.4%

0.1672

0.9201

Grade 3

Borderline

84(30.32%)

64(28.69%)

148

29.6%

Grade 4 and 5

Definite treatment

58(20.93%)

47(21.07%)

105

21%