Abstract

References
1.
Fordyce
G L
(1964 ) Brit. J. oral Surg.
2 , 80 .
2.
Hill
A V
(1930 ) Proc. roy. Soc.
B 127 , 9 .
3.
James
W W
(1926 ) Proc. R. Soc. Med.
19 , Sect. Odont. p 73 .
4.
Kinmonth
J S
(1954 ) Ann. R. Coll. Surg. Engl.
15 , 300 .
5.
Sallis
J S
Perry
J
(1963 ) Rep. R. Coll. Surg. p 92 .
6.
Sealey
V T
(1948 ) Aust. J. Dent.
52 , 244 .
7.
Stokke
T
(1956 ) Acta odont. scand.
14 , 65 .
8.
Toller
P A
(1948 ) Proc. R. Soc. Med.
41 , 681 .
9.
Toller
P A
(1964 ) Brit. J. oral Surg.
2 , 86 .
10.
Toller
P A
(1966a ) Brit. dent. J.
120 , 74 .
11.
Toller
P A
(1966b ) Brit. dent. J. (in press).
