title: [Effects of periodontal-pulp combined therapy on severe periodontitis].
abstract: OBJECTIVE
  To explore the necessity of periodontal-pulp combined therapy for severe periodontitis.
  
  
  METHODS
  From May 2009 to September 2011, 52 patients who were diagnosed of severe periodontitis were involved in this study. They were randomly divided into 2 groups. Patients in group A were given periodontal-pulp combined therapy, while patients in group B were given periodontal therapy. SBI, PD, AL were recorded in baseline, 3 months, 6 months, 1 year and 2 years after treatment. Statistical analysis was performed with SPSS13.0 software package.
  
  
  RESULTS
  All the indexes were different between 2 groups in baseline. Three months after treatment, all the indexes were not significantly different between two groups. Six months after treatment, SBI was significantly different between 2 groups, but PD and AL were not significantly different between 2 groups. One year after treatment, all the indexes were significantly different between 2 groups. Two years after treatment, SBI was not significantly different between 2 groups, but PD and AL were significantly different between two groups. The results of periodontal-pulp combined therapy were better than periodontal therapy.
  
  
  CONCLUSIONS
  Periodontal-pulp combined therapy is necessary for patients with severe periodontitis.
authors.affiliation: Department of Periodontology, Wuxi Stomatology Hospital. Wuxi 214000, Jiangsu Province, China.E-mail: wuxiguiyong@126.com.
authors.forename: Yong
authors.initials: Y
authors.lastname: Gui
authors.forename: Chen-chen
authors.initials: CC
authors.lastname: Feng
mesh_terms: D003774:Dental Plaque Index; D006801:Humans; D017622:Periodontal Attachment Loss; D010512:Periodontal Index; D010518:Periodontitis / Q000628:therapy*