# Comparison of salivary beta-defensin-1 levels in patients with periodontitis before and after phase I periodontal therapy

## TL;DR

This study examined how salivary hBD-1 levels change in periodontitis patients before and after initial therapy, finding a non-significant overall decrease but a significant reduction in patients with deeper gum pockets.

## Contribution

The study explores the potential role of hBD-1 as a biomarker for periodontitis and its response to therapy.

## Key findings

- Salivary hBD-1 levels decreased after therapy but not significantly overall (P=0.389).
- Patients with probing depth ≥3 mm showed a significant hBD-1 reduction (P=0.019).
- No significant correlation was found between hBD-1 changes and clinical periodontal indices.

## Abstract

This study compared human β-defensin 1 (hBD-1) salivary levels in patients with periodontitis before and after phase I periodontal therapy.

This controlled before-and-after study included 16 patients in the intervention group and 28 participants in the control group. Patients in the intervention group had stage 3 grade B periodontitis with no systemic diseases and had not taken any medications in the last six months. The control group included participants with healthy periodontium. Before and after phase I periodontal therapy, salivary samples were collected from the intervention group. ELISA was used to measure hBD-1 levels.

Salivary levels of hBD-1 decreased after phase I periodontal treatment in periodontitis patients, approaching those in healthy individuals. However, this reduction was not statistically significant (P=0.389). In patients with a probing depth (PD) of at least 3 mm, salivary levels of hBD-1 decreased significantly (P=0.019) following the intervention. There was no significant correlation between changes in hBD-1 levels and clinical indices, such as clinical attachment loss (CAL), probing depth, or bleeding index (BI) (P˃0.05).

The current study demonstrated promising results concerning a probable link between hBD-1 and periodontitis. However, more research with sufficiently large sample sizes and more robust study designs is necessary.