Document Type: Original Article


1 Dental Sciences Research Center, Dept. of Periodontology, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.

2 Dental Sciences Research Center, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.


Statement of the Problem: Information on patient-centered outcomes of periodontal disease and the impact of different periodontal treatment phases on the life quality of periodontal patients is limited.
Purpose: This study sought to compare patients’ perception of their oral health-related quality of life (OHQoL) following one-stage full mouth disinfection (OSFMD) and surgical periodontal treatment.
Materials and Method: A pre-and post-interventional study design was conducted in two phases on a single group of patients. Subjects were recruited from moderate to severe chronic periodontitis patients referred to a private clinic. At baseline and after each treatment phase, periodontal parameters were recorded by a blind examiner. Patients received OSFMD, followed by periodontal flap surgeries and completed the validated Iranian version of the OHIP-49 questionnaire (OHIP-35-IR) at three time points (baseline, two weeks post-initial therapy and after completion of surgical phase). Data were analyzed using repeated measure ANOVA, paired and independent t-tests, and multivariate regression analysis by SPSS software version 21.
Results: 38 patients (14 men, 24 women, mean age 40.30±11.93) completed the study. Periodontal parameters showed progressive improvement from baseline to the end of the study (p< 0.05). The total mean OHIP-35-IR score at baseline (89.25±19.26) was significantly improved (reduced) compared to each treatment phase (75.63±17.15 and 74.22±15.46, respectively; p< 0.001), with no significant difference between treatments. Improvements in subdomains of psychological discomfort, functional limitation, physical pain, and handicap accounted for the changes. The effect size was calculated to be 0.80 for the first and 0.66 for the second treatment phases. 
Conclusion: Within limits, OSFMD and periodontal surgical treatment have positive impacts on the OHQoL of patients. Intensive periodontal non-surgical treatment is as effective as surgical intervention for achieving desirable patient-centered outcomes.