Table 5.

Number of lingual tonsilloliths on CT and detectability of PR

Number on CT	Number of patients detected by PR	Number of patients detected by CT	Detection rate of PR compared with CT (%)
1	20	82	24.4
2	10	17	58.8
3	2	4	50.0
4	0	2	0.0
5	0	2	0.0
6	0	0	N/A
7	0	0	N/A
8	1	1	100.0
Total	33	108	30.6

N/A, not applicable; PR, panoramic radiography. No significant correlation was observed between the detection rate on panoramic radiographs and the number of tonsilloliths (Spearman’s r = 0.259, p > 0.05).