Derive Clinical Attachment Level (CAL = pd + gm, gm signed and defaulting
to 0) for every CHARTED site of a tooth on the active chart. CAL is never
stored — this is the single source of truth for it. A site absent from
pd (not charted) has NO entry in the returned Map (not a 0).
Derive Clinical Attachment Level (CAL = pd + gm, gm signed and defaulting to 0) for every CHARTED site of a tooth on the active chart. CAL is never stored — this is the single source of truth for it. A site absent from
pd(not charted) has NO entry in the returned Map (not a 0).