Table 2.

Comparison with various studies

S. No.	Authors	Year	Results (Pg:Pgs)
1	Bell and Dann	1973	1 : 0.60
2	Mc Donnell et al.	1977	1 : 0.75
3	Busquets and Sassouni	1981	1 : 0.80
4	Gallagher d. M et al.	1984	1 : 0.87
5	Tulsane	1987	1 : 0.73
6	Park et al.	1989	1 : 0.94
7	Polido et al.	1991	1 : 0.88
8	De Freitas et al.	1992	1 : 0.90
9	Kremanov and Kahnberg	1992	1 : 0.93
10	Polido and Bell	1993	1 : 0.83
11	Van Sickels et al.	1994	1 : 0.92
12	Talebzadeh and Pogrel	2001	1 : 0.75
13	Veltkamp et al.	2002	1 : 0.92
14	Shaughnessy et al.	2006	1 : 0.89
15	Present study	2009	1 : 0.89