This tooth presented with inter-proximal external crestal resorption according to my resorption classification for clinicians. Usually I like to have an external surgical approach to ensure clean margins, manage the field, and work the appropriate matrix. However, an external approach here would have left one hell of a periodontal problem and lots of bone destruction. So, we worked it out internally. Ultimately, glass ionomer was used as the restorative choice here. On short termish recall, the perio tissues look great- 3mm probings all around and no bleeding on probing. So far so good, no resorptive recurrence.