Impact of Malocclusions on the Oral Health-Related Quality of Life of Early Adolescents in Ndola, Zambia

Table 5

Relationship between OHRQoL and malocclusions.

Malocclusions	Occurrence	Impact on OHRQoL				Total			value
		No		Yes
			%		%		%
Anteriomaxillary overjet	No	339	90.2	37	9.8	376	97.9	61.549	<0.001
	Yes	0	0.0	8	100	8	2.1	—	—
Anterioposterior molar relation	No	332	89.2	39	10.8	361	94.0	4.882	0.027
	Yes	17	73.9	6	26.1	23	6.0	—	—
Vertical anterior open bite	No	321	88.9	40	11.1	361	94.0	2.374	0.123
	Yes	18	78.3	5	21.7	23	6.0	—	—
Anteriomandibular overjet	No	337	88.7	43	11.3	380	99.0	5.726	0.010
	Yes	2	50	2	50	4	1.0	—	—
Missing teeth in maxilla	No	337	88.2	45	11.8	382	99.5	0.267	0.605
	Yes	2	100	0	0.0	2	0.5	—	—
Spacing	No	310	90.6	32	9.4	342	89.1	16.863	<0.001
	Yes	29	69.0	13	31.0	42	10.9	—	—
Crowding	No	319	89.9	36	10.1	355	92.4	11.313	0.001
	Yes	20	69.0	9	31.0	29	7.6	—	—
Diastema	No	313	90.5	33	9.5	346	90.1	16.079	<0.001
	Yes	26	68.4	12	31.6	38	9.9	—	—
Overall malocclusions	No	264	95.3	13	4.7	277	72.1	47.429	<0.001
	Yes	75	70.1	32	29.9	107	27.9	—	—

: number; %: percentage; OHRQoL: oral health-related quality of life; is significant.