Table 5.

Indicators of dental caries by dental care type: mean, standard deviation (SD) and 95% confidence intervals at 12-year-old group

Indicator		Public dental health services	Private dental clinics	p-value
Caries-free teetha	Mean ± SD	25.82 ± 0.14	25.33 ± 0.11	0.0049
	95% CI	[25.55–26.08]	[25.11–25.54]
Decayed teetha	Mean ± SD	0.28 ± 0.04	0.20 ± 0.04	0.1564
	95% CI	[0.20–0.37]	[0.13–0.27]
Missing teetha	Mean ± SD	0.03 ± 0.01	0.06 ± 0.02	0.1036
	95% CI	[0.01–0.05]	[0.03–0.09]
Filled teetha	Mean ± SD	0.48 ± 0.06	0.75 ± 0.06	0.0004
	95% CI	[0.37–0.58]	[0.64–0.86]
Caries-free temporary teeth	Mean ± SD	1.20 ± 0.14	0.99 ± 0.09	0.1988
	95% CI	[0.92–1.47]	[0.82–1.16]
Decayed temporary teeth	Mean ± SD	0.16 ± 0.03	0.08 ± 0.02	0.0254
	95% CI	[0.10–0.23]	[0.05–0.11]
Filled temporary teeth	Mean ± SD	0.05 ± 0.02	0.07 ± 0.02	0.4356
	95% CI	[0.02–0.09]	[0.04–0.10]
Caries-free permanent teeth	Mean ± SD	24.62 ± 0.23	24.34 ± 0.16	0.3098
	95% CI	[24.17–25.06]	[24.04–24.64]
Decayed permanent teeth	Mean ± SD	0.12 ± 0.03	0.12 ± 0.03	0.9319
	95% CI	[0.06–0.17]	[0.06–0.19]
Missing permanent teeth	Mean ± SD	0.01 ± 0.01	0.01 ± 0.01	0.4653
	95% CI	[0–0.02]	[0–0.01]
Filled permanent teeth	Mean ± SD	0.42 ± 0.05	0.68 ± 0.05	0.0005
	95% CI	[0.32–0.52]	[0.58–0.79]
DMFT/dmftb	Mean ± SD	0.77 ± 0.08	0.96 ± 0.07	0.0580
	95% CI	[0.62–0.92]	[0.83–1.10]
DMFTc	Mean ± SD	0.55 ± 0.06	0.81 ± 0.07	0.0031
	95% CI	[0.43–0.67]	[0.68–0.94]

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