| Less than 30% of the sites on teeth exhibit periodontitis, and interdental attachment loss is at least 5 millimeters with radiographic evidence of bone loss extending at least to the middle third of the root with vertical bone loss of at least 3 millimeters, probing depths of at least 6 millimeters, moderate ridge defect, and furcation classification of II-III. There is radiographic evidence of clinical attachment or bone loss with a minimum of 2 millimeters over the last five years, disease progression exceeds expectations related to biofilm deposits and bacterial control therapies, patient smokes at least 10 cigarettes daily and may be diabetic but exhibits HbA1c levels of at least 7%. |