Table 2. Comparison of mean RSA at 6 mm for each tooth type.

Variables		RSA (mm2)
		Male				Female
		Right		Left		Right		Left
		Mean	SD	Mean	SD	Mean	SD	Mean	SD
Maxilla
	Central incisor	132.88	24.38	136.87	27.27	120.27	17.87	121.84	18.45
	Lateral incisor	122.82	23.80	121.43	22.45	110.86	20.16	108.24	18.23
	Canine	147.66	26.20	144.58	23.76	128.16	18.45	128.10	16.99
	First premolar	144.22	22.21	139.62	17.02	127.92	12.40	125.97	11.62
	Second premolar	127.98	14.39	132.66	16.72	120.59	12.33	119.40	11.98
	First molar	242.31	31.91	242.55	30.22	212.40	24.67	222.58	30.36
	Second molar	207.40	25.77	210.09	30.53	190.72	27.88	187.04	27.33
Mandible
	Central incisor	102.04	19.76	101.14	17.79	94.39	16.58	92.33	14.53
	Lateral incisor	109.70	18.39	110.15	16.71	104.94	15.79	104.04	16.88
	Canine	138.82	19.71	139.79	20.73	125.21	19.66	123.42	18.45
	First premolar	118.06	16.55	118.41	15.36	114.37	16.75	113.15	16.27
	Second premolar	116.96	14.70	118.52	14.38	109.46	13.38	107.67	12.66
	First molar	235.67	28.67	228.98	27.17	218.12	28.79	218.33	33.76
	Second molar	192.60	30.89	203.06	41.18	177.89	30.89	175.26	24.37

RSA: root surface area, SD: standard deviation.