Secondary caries
![](https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Sekund%C3%A4rkaries.jpg/220px-Sekund%C3%A4rkaries.jpg)
Caries has developed again under the filling (white) of tooth 46
Secondary caries is a term used in dentistry .
It describes a renewed formation of caries on a carious area that has already been treated, for example on a protruding, insufficiently dense or damaged filling or crown margin .
See also: predilection point
Secondary caries is to be distinguished from caries recurrence , which is based on inadequately treated caries.