. 2019 Dec 31;20:1. doi: 10.1186/s12903-019-0991-2

Table 2.

Prevalence of clinically diagnosed developmental dental hard tissue anomalies by caries and oral hygiene status in preschool children in Ile-Ife (N = 918)

Variables		Early childhood caries					Oral hygiene status							TOTAL N = 918
		Absent N = 875		Present n = 43		p- value	Good n = 613		Fair n = 267		Poor n = 38		p- value	TOTAL N = 918
		Number	%	Number	%	p- value	Number	%	Number	%	Number	%	p- value	Number	%
Supernumerary	Absent	871	99.5	43	100.0	1.00	610	99.5	267	100.0	37	97.4	0.10	897	99.6
Supernumerary	Present	4	0.5	0	0.0	1.00	3	0.5	0	0.0	1	2.6	0.10	4	0.4
Supplemental	Absent	869	99.3	43	100.0	1.00	609	99.3	266	99.6	37	97.4	0.28	896	99.3
Supplemental	Present	6	0.7	0	0.0	1.00	4	0.7	1	0.4	1	2.6	0.28	6	0.7
Mesiodens	Absent	868	99.2	43	100.0	1.00	610	99.5	265	99.2	36	94.7	0.03	889	99.2
Mesiodens	Present	7	0.8	0	0.0	1.00	3	0.5	2	0.8	2	5.3	0.03	7	0.8
Hypodontia	Absent	867	99.1	43	100.0	1.00	608	99.2	267	100.0	35	92.1	0.03	896	99.1
Hypodontia	Present	8	0.9	0	0.0	1.00	5	0.8	0	0.0	3	7.9	0.03	8	0.9
Macrodontia	Absent	870	99.4	43	100.0	1.00	609	99.3	267	100.0	37	97.4	0.007	898	99.4
Macrodontia	Present	5	0.6	0	0.0	1.00	4	0.7	0	0.0	1	2.6	0.007	5	0.6
Microdontia	Absent	869	99.3	43	100.0	1.00	608	99.2	267	100.0	37	97.4	0.10	890	99.3
Microdontia	Present	6	0.7	0	0.0	1.00	5	0.8	0	0.0	1	2.6	0.10	6	0.7
peg-shaped lateral	Absent	864	98.7	43	100.0	1.00	607	99.0	263	98.5	37	97.4	0.34	888	98.8
peg-shaped lateral	Present	11	1.3	0	0.0	1.00	6	1.0	4	1.5	1	2.6	0.34	11	1.2
Dens evaginatus	Absent	871	99.5	43	100.0	1.00	610	99.5	267	100.0	37	97.4	0.10	898	99.6
Dens evaginatus	Present	4	0.5	0	0.0	1.00	3	0.5	0	0.0	1	2.6	0.10	4	0.4
Dens invaginatus	Absent	870	99.4	43	100.0	1.00	609	99.3	267	100.0	37	97.4	0.10	896	99.4
Dens invaginatus	Present	5	0.6	0	0.0	1.00	4	0.7	0	0.0	1	2.6	0.10	5	0.6
Talons cusp	Absent	869	99.3	43	100.0	1.00	608	99.2	267	100.0	37	97.4	0.10	893	99.3
Talons cusp	Present	6	0.7	0	0.0	1.00	5	0.8	0	0.0	1	2.6	0.10	6	0.7
Fusion/gemination	Absent	871	99.5	43	100.0	1.00	609	99.3	267	100.0	38	100.0	0.43	893	99.6
Fusion/gemination	Present	4	0.5	0	0.0	1.00	4	0.7	0	0.0	0	0.0	0.43	4	0.4
Hypoplasia	Absent	846	96.6	37	86.0	< 0.001	585	95.3	262	98.1	36	94.7	0.10	865	96.1
Hypoplasia	Present	29	3.4	6	14.0	< 0.001	28	4.7	5	1.9	2	5.3	0.10	35	3.9
Hypomineralised Second molar	Absent	860	98.2	40	93.0	0.05	599	97.7	264	98.9	37	97.4	0.37	879	98.0
Hypomineralised Second molar	Present	15	1.8	3	7.0	0.05	14	2.3	3	1.1	1	2.6	0.37	18	2.0
Fluorosis	Absent	869	99.3	43	100.0	1.00	609	99.3	265	99.2	38	100.0	1.00	886	99.3
Fluorosis	Present	6	0.7	0	0.0	1.00	4	0.7	2	0.8	0	0.0	1.00	6	0.7
Amelogenesis imperfecta	Absent	868	99.2	43	100.0	1.00	607	99.0	267	100.0	37	97.4	0.10	886	99.2
Amelogenesis imperfecta	Present	7	0.8	0	0.0	1.00	6	1.0	0	0.0	1	2.6	0.10	7	0.8