Page 213 - My FlipBook
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Flo. 129. A blackened spot on the mesial surface of a central incisor caused by
a beginning
decay of the enamel, which was stopped by a change of conditions, and afterward became very dark
It shows the most common position of beginning of decay in these surfaces.
Flo. 130. An open cavity in the mesial surface of a central incisor with a superficial extension
of decay running away from
it, toward the linguo-gingival angle of the surface. A similar superficial
whitening leads away to the labio-gingival angle, which was lost in the high light in photographing
