The Sinus Maxillaris in Man. 347 
TABLE C. 
ow) 
g DOSRO- VENTRO- 
| sex | ace | sIDE WAGiNTO BBE AGNES SUPERIOR SUPERIOR 
A DORSAL LATERAL INFERIOR DIAGONAL DIAGONAL: 
a 
mm. mm. mm. mm. ‘ mm. 
1|M | 70 | right 15 1st 21 ire 18 
2}|M | 70 | left 16 12 21 21 20 
3|/M | 35 | left 22 20 30 31 25 
4|M | 54 left 25 15 22 32 27 
o} EF | 54 | right 26 15 20 30 26 
6;|M | 60 left 30 20 22 38 25 
AR Sa rere site 35 25 30 37 38 
8 | M_-| 59 left 40 22 32 45 45 
Ole Nie 21h right 46 33 26 50 50 
10} M | 77 left 47 40 50 57 60 
sinus, on the one hand, and a shallow fossa canina with a lessened 
encroachment on the other hand. Thus: 
No. V. D. M. L. Sip Jf Diss D: Wietsn 10% 
mm. mm. mm. mm. mm. 
IL crepes cones ae 25 15 25 39 36 
Dea tee Nek 43 20 30 41 37 
If the body of the maxilla is hollowed out to a marked degree 
in all directions the measurements will be correspondingly 
lengthened. When this hollowing out has not been carried far, 
and when associated with some of the above mentioned condi- 
tions, the measurements will be markedly lessened. Thus: 
No. Verb: M.L. Seale DiS: Db: V.S. D. 
mm. mm. mm. mm. mm. 
lee sree ah See tas 47 40 50 57 60 
eget Oe ica iea ace 16 12 21 21 20 
These few examples show how anatomical conditions will 
affect the measurements of the sinus maxillaris. It, therefore, 
appears reasonable that, by examination of the anterior surface 
of the maxilla and the lateral nasal wall, the size of the sinus may 
be approximately determined and the teeth relations judged. It 
does, however, not necessarily follow, because the ventral and 
