1. A 10-year retrospective study of periodontal disease progression;Papapanou;J Clin Periodontol,1989
2. Periodontal regeneration – intrabony defects: practical applications from the AAP regeneration workshop;Reynolds;Clin Adv Periodontics,2015
3. Periodontal regeneration - furcation defects: practical applications from the AAP regeneration workshop;Aichelmann-Reidy;Clin Adv Periodontics,2015
4. Periodontal regeneration - intrabony defects: a systematic review from the AAP Regeneration Workshop;Kao;J Periodontol,2015
5. Periodontal regeneration - intrabony defects: a consensus report from the AAP Regeneration Workshop;Reynolds;J Periodontol,2015