Determination of sex from tooth pulp tissue

Figures & data

Figure 1.  Nucleus of male cell with fluoresent ‘Y’ chromosome.

Figure 2.  Nucleus of female cell with faint fluorescence of the whole nucleus.

Table 1. Diagnostic utility of fluorescent body in identifying gender

	Group 1	Group 2	Group 3
Examination relative to extraction	Immediately after	One month later	Five months later
Cut-off value	28	16	11
Sensitivity (%)	100	100	70
Specificity (%)	100	100	60
Positive predictive value (%)	100	100	64
Negative predictive value (%)	100	100	67
Efficiency (%)	100	100	65

Table 2. The mean, standard deviation, and range of the number of fluorescent bodies observed in freshly extracted teeth and one month and five months after extraction

Groups	Measurement	Fresh	One month	Five months
Males	Mean±SD	57.7±9.6	30.6±6.5	12.6±5.8
	Range	44–71	19–49	5–22
Females	Mean±SD	4.4±4.6	9.4±3.9	9.0±4.1
	Range	0–13	4–14	2–14
Total	Mean±SD	31.1±28.3	21.0±13.4	10.8±5.2
	Range	0–71	4–49	2–22

Table 3. Correct and incorrect identification of gender from freshly extracted teeth

Gender	Identification	No. of teeth	Age range	Fluorescence range (%)
Males	Correct	10	22–65	44–71
	Incorrect	0	–	–
Females	Correct	8	18–45	0–8
	Incorrect	2	19–29	11–13

Table 4. Correct and incorrect identification of gender one month after extraction of teeth

Gender	Identification	No. of teeth	Age range	Fluorescence range (%)
Males	Correct	10	38–68	19–49
	Incorrect	0	–	–
Females	Correct	5	32–55	4–6
	Incorrect	5	44–68	10–14

Table 5. Correct and incorrect identification of gender five months after extraction of teeth

Gender	Identification	No. of teeth	Age range	Fluorescence range (%)
Males	Correct	6	45–63	12–22
	Incorrect	4	52–71	4–8
Females	Correct	5	59–74	2–9
	Incorrect	5	48–72	11–14