What type of bacteria is primarily associated with periodontal disease?

Periodontal disease is primarily associated with specific types of bacteria that thrive in the subgingival environment. The bacteria most commonly linked to periodontal disease are often Gram-negative anaerobes, with Porphyromonas gingivalis being one of the key pathogens.

The choice indicating Bacillus is not typically associated with periodontal issues. Bacillus species are generally known for their roles in soil and food spoilage rather than periodontal pathogens.

In contrast, Streptococcus, particularly Streptococcus mutans, is more commonly associated with dental caries rather than periodontal disease. Lactobacillus also has a strong association with dental caries but not specifically with periodontal disease.

The type of bacteria that plays a significant role in periodontal disease includes a variety of Gram-negative anaerobic bacteria rather than the options provided. Understanding the primary pathogens responsible for periodontal disease is crucial in dental nursing, as recognizing these organisms aids in the diagnosis, treatment, and prevention of periodontal conditions.