Figure 2.

An example of spectrophotometric data for one subject's lower incisors during the complete trial, starting at baseline (T0), following infiltration (T1), to T24 final recordings after 24–45 months. In the case shown, recordings were performed after 24 months. This figure is an update of the spectrophotometer image series published earlier.12 Nontreated control teeth pictures are not available beyond 6 months after baseline, as these were then also infiltrated as part of an agreement with the patients.