The principal antibody in tears and saliva is    

Tobacco use is related to an increased risk for severe periodontal disease. Smokers have a diminished neutrophil function.

A bacterial product that attracts leukocytes to an area of irritation is  

Which of the following stages of gingivitis is the earliest clinical evidence of gingivitis?

The width of attached gingiva is determined by subtracting the sulcus depth from the total width of keratinized gingiva.  

Which of the following layers of subgingival plaque activates the host response resulting in the most destructive processes seen in periodontal disease?

The acquired pellicle in dental plaque is composed of:

A variety of species and quantities of bacteria can be detected in the gingival crevice and are easily associated with varying degrees of disease activity. Therefore, the presence of a highly motile bacterial population and an increase in white blood cells suggests potential for disease.

Mature dental plaque can be described as:

A bacterial plaque sample taken from a healthy mouth would show which of the following: