Retrospective study of tooth loss in 92 treated periodontal patients

J Clin Periodontol. 2002 Jul;29(7):651-6. doi: 10.1034/j.1600-051x.2002.290710.x.


Background/aims: In this retrospective study, the efficacy of periodontal therapy and maintenance in preventing tooth loss was evaluated.

Methods: The study included 92 patients with 2310 teeth diagnosed with chronic adult periodontitis and observed over a mean period of 6.7 years, with each patient receiving surgical therapy in two or more quadrants. The group was divided into two subgroups: those who complied with the recommended maintenance schedule and those whose compliance was erratic. Individual tooth prognosis was assigned according to radiographic parameters.

Results: At the completion of active periodontal therapy, 2184 teeth were present. During the maintenance period, 44 teeth were lost due to periodontal reasons. Tooth mortality revealed a mean annual adjusted tooth loss rate of 0.07/year. Molars were the teeth most frequently lost; canines the least. The number of teeth lost in the three prognostic categories was: one (0.07%) for teeth with good prognoses, 21 (3.63%) for questionable prognoses and 22 (11.34%) for hopeless prognoses. Patients complying erratically with supportive periodontal therapy were at a 5.6 times greater risk for tooth loss following active therapy than regularly compliant patients.

Conclusions: The results demonstrated a low tooth mortality rate in periodontal patients following active treatment combined with a strict maintenance program.

MeSH terms

  • Adult
  • Aged
  • Alveolar Bone Loss / prevention & control
  • Alveolar Bone Loss / surgery
  • Chi-Square Distribution
  • Chronic Disease
  • Confidence Intervals
  • Cuspid / pathology
  • Dental Plaque / prevention & control
  • Female
  • Follow-Up Studies
  • Furcation Defects / prevention & control
  • Furcation Defects / surgery
  • Humans
  • Logistic Models
  • Male
  • Middle Aged
  • Molar / pathology
  • Odds Ratio
  • Oral Hygiene
  • Patient Compliance
  • Periodontal Diseases / prevention & control
  • Periodontal Diseases / surgery*
  • Prognosis
  • Retrospective Studies
  • Risk Factors
  • Statistics, Nonparametric
  • Tooth Loss / etiology*
  • Tooth Loss / prevention & control
  • Treatment Outcome