Table 6.

Indicators of dental caries by dental care type: mean, standard deviation (SD) and 95% confidence intervals at 15-year-old group

Indicator		Public dental health services	Private dental clinics	p-value
Caries-free teetha	Mean ± SD	26.90 ± 0.13	26.06 ± 0.10	< 0.0001
	95% CI	[26.65–27.15]	[25.86–26.23]
Decayed teetha	Mean ± SD	0.13 ± 0.04	0.14 ± 0.02	0.8320
	95% CI	[0.06–0.21]	[0.10–0.17]
Missing teetha	Mean ± SD	0.13 ± 0.05	0.25 ± 0.04	0.0503
	95% CI	[0.03–0.23]	[0.18–0.33]
Filled teetha	Mean ± SD	0.74 ± 0.10	1.36 ± 0.08	< 0.0001
	95% CI	[0.53–0.94]	[1.21–1.52]
Caries-free temporary teeth	Mean ± SD	0.05 ± 0.02	0.06 ± 0.02	0.6097
	95% CI	[0–0.09]	[0.03–0.09]
Decayed temporary teeth	Mean ± SD	0.01 ± 0.01	0.01 ± 0.00	0.7848
	95% CI	[0–0.01]	[0–0.01]
Filled temporary teeth	Mean ± SD	0 ± 0	0 ± 0	0.0458
	95% CI	[0–0]	[0–0.01]
Caries-free permanent teeth	Mean ± SD	26.86 ± 0.13	25.99 ± 0.10	< 0.0001
	95% CI	[26.60–27.11]	[25.80–26.17]
Decayed permanent teeth	Mean ± SD	0.13 ± 0.04	0.14 ± 0.02	0.8563
	95% CI	[0.06–0.20]	[0.10–0.18]
Missing permanent teeth	Mean ± SD	0.01 ± 0.01	0.02 ± 0.01	0.5073
	95% CI	[0–0.02]	[0–0.04]
Filled permanent teeth	Mean ± SD	0.74 ± 0.10	1.35 ± 0.08	< 0.0001
	95% CI	[0.53–0.94]	[1.20–1.51]
DMFT/dmftb	Mean ± SD	0.88 ± 0.11	1.52 ± 0.09	< 0.0001
	95% CI	[0.68–1.09]	[1.36–1.69]
DMFTc	Mean ± SD	0.88 ± 0.11	1.51 ± 0.08	< 0.0001
	95% CI	[0.66–1.09]	[1.34–1.67]

Statistical evaluation using the Student’s t-test for the difference of means by age group

^aTotal number (temporary + permanent) of caries-free, decayed, missing and filled teeth

^bAverage decayed, missing and filled teeth per child, including temporary and permanent teeth

^cAverage decayed, missing and filled permanent teeth per child