Background: The present study used the new classification of periodontitis and validated questionnaires to assess the relationship among dental fear, scaling and root planning (SRP) pain and periodontal status for clinical evaluation.
Methods: One hundred and twenty periodontitis patients were enrolled for retrospective analysis and staging according to the new classification of periodontitis. All patients included in this study from July 2018 to January 2020 were divided into periodontitis stages. Scaling and root planning (SRP) was performed and Visual analogue scale (VAS) was determined for every patient immediately after SRP. Application of questionnaires including Corah’s Dental Anxiety Scales (DAS), Dental Fear Survey (DFS), and the short-form Dental Anxiety Inventory (S-DAI) were implemented from the first attendance and consequent visits after 6 months. All patient demographic data were collected including age, gender, marital status and education level. The scores of each dental fear scale and combination scales were also recorded. Patients were further subdivided into two categories based on DAS scores (low dental fear group: DAS<13; high dental fear group: DAS≥13). Statistical analysis was performed using t-test, chi-square, pearson and spearman correlative analysis to evaluate the relationship and differences among dental fear, SRP pain and periodontal status.
Results: Compared to pre-SRP treatment, dental fear level of DFS and combination scales were significantly decreased in the post-treatment period for all the periodontitis stages. There was no statistically significant difference between the pre-treatment and post-treatment periods on S-DAI and DAS in stage I and II; meanwhile, there were statistically significant differences between pre-treatment and post-treatment periods on S-DAI and DAS in stage III and IV. The correlation among periodontitis stages, VAS and dental fear level assessed via DAS, DFS and S-DAI, was statistically significant. In the categories divided according to DAS scale, the proportion of high periodontitis stages was significantly increased in high dental fear group (DAS≥13).
Conclusion: SRP can reduce dental fear level in all periodontitis stages, especially in stage III and IV. Correlations exists among periodontal status, dental fear and SRP pain. High dental fear is associated with poor periodontal status.