These weekly seminars review clinical cases that are being performed by the residents. The treatment plan, appropriate therapy, and relevant periodontal literature are discussed. Residents will also present selected topics on various aspects related to periodontal therapy. Upon completion of Principles and Practice of Periodontics I, II, and III (DEN6091Y, DEN6092Y, and DEN6093Y) the student will be able to justify treatment based on evidence and literature, report on most updated and relevant literature, argue, and defend different treatment options and approaches, and support clinical treatment based on scientific evidence.