Prevalence, clinical characteristics, and 3-dimensional radiographic analysis of supernumerary teeth in Guangzhou, China: a retrospective study

Table 4 Factors related to the supernumerary tooth eruption status regarding diverse 3D characteristics

Studied factors		Status				χ²	P value
Studied factors		Nonerupted (n,%)		Erupted(n,%)		χ²	P value
Region	Central incisor	554	73.5%	200	26.5%	10.291	0.027*
	Lateral incisor	22	75.9%	7	24.1%
	Canine	18	94.7%	1	5.3%
	Premolar	20	95.2%	1	4.8%
	Molar	2	100.0%	0	0.0%
Morphology	Conical	449	75.5%	146	24.5%	15.274	0.002*
	Tuberculate	120	70.2%	51	29.8%
	Supplemental	18	60.0%	12	40.0%
	Odontoid	29	100.0%	0	0.0%
Orientation	Normal	118	36.9%	202	63.1%	440.655	< 0.001*
Orientation	Inverted	275	100.0%	0	0.0%
	Palatal transverse	133	96.4%	5	3.6%
	Labial transverse	15	93.7%	1	6.3%
	Others^a	75	98.7%	1	1.3%
Position	Palatal	418	78.3%	116	21.7%	82.537	< 0.001*
	Throughout	114	93.4%	8	6.6%
	Median	76	49.0%	79	51.0%
	Labial	8	57.1%	6	42.9%

*Statistical significance (P ≤ 0.05). The P value was calculated by the chi-square test or Fisher’s exact test using SPSS 24.0.
^a Others include mesial or distal horizontal and undefinable orientations.

ISSN: 1472-6831