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

Table 1.

Prevalence of clinically diagnosed developmental dental hard tissue anomalies by sex and socioeconomic status in 3–5 year old children in Ile-Ife (N = 918)

Variables		Sex					Socio-economic status							TOTAL N = 918
		Male n = 495		Female n = 423		P value	High n = 291		Middle n = 402		Low n = 225		P value	TOTAL N = 918
		Number	%	Number	%	P value	Number	%	Number	%	Number	%	P value	Number	%
Supernumerary	Absent	494	99.8	420	99.3	0.34	290	99.7	400	99.5	224	99.5	1.00	914	99.6
Supernumerary	Present	1	0.2	3	0.7	0.34	1	0.3	2	0.5	1	0.5	1.00	4	0.4
Supplemental	Absent	493	99.4	420	99.3	1.00	290	99.7	400	99.5	222	98.6	0.39	912	99.3
Supplemental	Present	3	0.6	3	0.7	1.00	1	0.3	2	0.5	3	1.4	0.39	6	0.7
Mesiodens	Absent	492	99.6	418	98.8	0.26	289	99.3	400	99.5	222	98.6	0.55	911	99.2
Mesiodens	Present	2	0.4	5	1.2	0.26	2	0.7	2	0.5	3	1.4	0.55	7	0.8
Hypodontia	Absent	493	99.4	418	98.8	0.48	288	99.0	399	99.2	223	99.1	0.91	910	99.1
Hypodontia	Present	3	0.6	5	1.2	0.48	3	1.0	3	0.8	2	0.9	0.91	8	0.9
Macrodontia	Absent	494	99.8	419	99.0	1.90	290	99.6	399	99.2	224	99.5	0.86	913	99.4
Macrodontia	Present	1	0.2	4	1.0	1.90	1	0.4	3	0.8	1	0.5	0.86	5	0.6
Microdontia	Absent	493	99.6	419	99.0	0.42	289	99.3	400	99.5	223	99.1	0.87	912	99.3
Microdontia	Present	2	0.4	4	1.0	0.42	2	0.7	2	0.5	2	0.9	0.87	6	0.7
peg-shaped lateral	Absent	491	99.2	416	98.3	0.36	288	98.9	398	99.0	221	98.2	0.69	907	98.8
peg-shaped lateral	Present	4	0.8	7	1.7	0.36	3	1.1	4	1.0	4	1.8	0.69	11	1.2
Dens evaginatus	Absent	494	99.8	420	99.3	0.34	290	99.7	400	99.5	224	99.5	1.00	914	99.6
Dens evaginatus	Present	1	0.2	3	0.7	0.34	1	0.3	2	0.5	1	0.5	1.00	4	0.4
Dens invaginatus	Absent	493	99.6	420	99.3	0.67	290	99.7	400	99.5	223	99.1	0.73	913	99.4
Dens invaginatus	Present	2	0.4	3	0.7	0.67	1	0.3	2	0.5	2	0.9	0.73	5	0.6
Talons cusp	Absent	492	99.4	420	99.3	1.00	290	99.7	400	99.5	222	98.6	0.50	912	99.3
Talons cusp	Present	3	0.6	3	0.7	1.00	1	0.3	2	0.5	3	1.4	0.50	6	0.7
Fusion/gemination	Absent	494	99.8	420	99.3	0.34	290	99.7	401	99.7	223	99.1	0.47	914	99.6
Fusion/gemination	Present	1	0.2	3	0.7	0.34	1	0.3	1	0.3	2	0.9	0.47	4	0.4
Hypoplasia	Absent	479	96.7	404	95.4	0.39	281	96.5	387	96.2	215	95.5	0.86	883	96.1
Hypoplasia	Present	16	3.3	19	4.6	0.39	10	3.5	15	3.8	10	4.5	0.86	35	3.9
Hypomineralised Second molar	Absent	485	97.9	415	98.1	1.00	285	97.9	395	98.2	220	97.7	0.87	900	98.0
Hypomineralised Second molar	Present	10	2.1	8	1.9	1.00	6	2.1	7	1.8	5	2.3	0.87	18	2.0
Fluorosis	Absent	491	99.2	421	99.5	0.69	288	98.9	400	99.5	224	99.5	0.68	912	99.3
Fluorosis	Present	4	0.8	2	0.5	0.69	3	1.1	2	0.5	1	0.5	0.68	6	0.7
Amelogenesis imperfecta	Absent	491	99.2	420	99.3	1.00	290	99.7	399	99.2	222	98.6	0.44	911	99.2
Amelogenesis imperfecta	Present	4	0.8	3	0.7	1.00	1	0.3	3	0.8	3	1.4	0.44	7	0.8