NDHCE Study Guide 2026

Research consistently shows that low-income children, Black, Hispanic, and Native American populations experience higher rates of untreated dental caries due to barriers in access to care.

Gingival bleeding, particularly during brushing, flossing, or probing, is one of the earliest and most common clinical signs of gingivitis. It indicates inflammation of the gum tissue, which becomes more fragile and prone to bleeding due to bacterial plaque accumulation along the gumline.

The nasopalatine nerve innervates the anterior hard palate (anterior one-third) and the lingual/palatal gingiva of the maxillary six anterior teeth.

Surgical hand antisepsis uses a specific technique and antiseptic agent with residual (persistent) antimicrobial activity to reduce microorganisms to a minimum before surgical procedures.

Warfarin is an anticoagulant that increases bleeding risk; the dental hygienist should consult with the patient's physician to review current INR levels before performing subgingival scaling or other invasive procedures.

Untreated periodontitis leads to progressive destruction of the periodontal ligament and alveolar bone that support the teeth. As this supporting structure is lost, teeth become mobile and eventually fall out or need to be extracted, making tooth loss a direct and severe complication of the disease.