Periodontitis is a progressive disease of the periodontium with a complex, polymicrobial etiology. Recent Next-Generation Sequencing (NGS) studies of the microbial diversity associated with periodontitis have revealed strong, community-level differences in bacterial assemblages associated with healthy or diseased periodontal sites. In this study, we used NGS approaches to characterize changes in periodontal pocket bacterial diversity after standard periodontal treatment. Despite consistent changes in the abundance of certain taxa in individuals whose condition improved with treatment, post-treatment samples retained the highest similarity to pre-treatment samples from the same individual. Deeper phylogenetic analysis of periodontal pathogen-containing genera Prevotella and Fusobacterium found both unexpected diversity and differential treatment response among species. Our results highlight how understanding interpersonal variability among microbiomes is necessary for determining how polymicrobial diseases respond to treatment and disturbance.

A twice-weekly oral rinse with 0.25% sodium hypochlorite produced marked decreases in dental plaque level and bleeding on probing and may constitute a promising new approach to the management of periodontal disease. Long-term controlled studies on the effectiveness of sodium hypochlorite oral rinse are needed and encouraged.

Persistent gingival bleeding on probing was associated with an increased risk for periodontal breakdown, and the absence of gingival bleeding seemed to be a useful, although not perfect, indicator of disease stability. Twice-weekly oral rinsing with dilute bleach (0.25% sodium hypochlorite) produced a significant reduction in bleeding on probing, even in deep unscaled pockets. Sodium hypochlorite constitutes a valuable antiseptic in periodontal self-care.

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Objective To evaluate awareness and attitudes of dental students and interns about patient safety culture in Dammam, Saudi Arabia. Materials and methods This cross‐sectional study was conducted on 272 undergraduate dental students and interns using the Safety Attitudes Questionnaire (SAQ) from November 2019 to January 2020. The SAQ consists of six domains: teamwork climate, safety climate, job satisfaction, stress recognition, perception of management and work conditions. The score of SAQ ranges from 0 to 100, and a cut‐off ≥75 is considered a positive attitude of patient safety. Results The study included 47.1% of males and 52.9% of females with a mean age of 22.58 ± 1.3 years. Few participants (9.9%) showed a positive attitude of patient safety culture. Nearly one‐third of participants (35.7%) attended a course on patient safety and 31.6% reported experiencing adverse events by them or their families. Out of six domains, job satisfaction showed the highest mean score (70.25) and 75.4% of participants felt proud to practise in the dental clinic. Female students demonstrated a significantly higher mean score of stress recognition (64.28 ± 18.98) than male students (56.98 ± 22.53) (P 0.004). The mean SAQ score increased significantly from fourth year students to interns (P < .001). Conclusions A small percentage of students demonstrated a positive attitude of patient safety and only one‐third attended a patient safety course. The job satisfaction domain was highly rated and patient safety culture significantly improved from junior to senior students. Dental curricula should include patient safety courses to improve the quality and safety of patient care.