Mixed Deck — All NDHCE Topics Flashcards

Which disparity in oral health is consistently documented across US populations?

Answer: Greater untreated dental caries in low-income and racial/ethnic minority groups

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.

Which of the following is a common sign of gingivitis?

Answer: Gingival bleeding

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, which is anesthetized during a nasopalatine nerve block, innervates which area?

Answer: Anterior hard palate and lingual gingiva of maxillary anterior teeth

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

Which hand hygiene method is MOST effective for reducing the number of microorganisms on hands before surgical procedures?

Answer: Surgical hand antisepsis using antiseptic soap or alcohol-based product with persistent activity

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

A patient's health history reveals they are taking warfarin. What precaution should the dental hygienist take?

Answer: Consult with the prescribing physician about INR levels before invasive 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.

Which of the following conditions is a potential complication of untreated periodontitis?

Answer: Tooth loss

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.

The DMFT index is used in community oral health surveys. What does a DMFT score of 0 indicate?

Answer: No caries experience in the permanent dentition

A DMFT score of 0 means no teeth are decayed, missing due to caries, or filled, indicating no caries experience in the permanent dentition.

Which of the following best describes the anatomical location of the pterygomandibular raphe?

Answer: A fibrous band between the buccinator muscle and the superior pharyngeal constrictor

The pterygomandibular raphe is a fibrous band stretching from the pterygoid hamulus to the posterior mandible, separating and serving as the origin for the buccinator and superior pharyngeal constrictor muscles.

Which OSHA standard requires dental employers to provide the Hepatitis B vaccine to exposed employees at no cost?

Answer: Bloodborne Pathogens Standard (29 CFR 1910.1030)

OSHA's Bloodborne Pathogens Standard (29 CFR 1910.1030) requires employers to offer the Hepatitis B vaccination series to all employees with occupational exposure at no cost within 10 days of initial assignment.

In head and neck anatomy, the 'Waldeyer's ring' refers to:

Answer: A ring of lymphoid tissue at the junction of the oral cavity and pharynx

Waldeyer's ring is a ring of lymphoid tissue comprising the pharyngeal tonsil (adenoids), palatine tonsils, lingual tonsils, and tubal tonsils that guards the entrance to the pharynx.

School-based dental screenings primarily serve which of the following purposes?

Answer: To identify children who need follow-up dental care and refer them to providers

School-based dental screenings identify children with dental needs and refer them to dental providers for diagnosis and treatment, acting as an entry point into the dental care system.

Which radiographic landmark appears as a radiolucent oval area above the roots of the maxillary central incisors?

Answer: Incisive foramen

The incisive foramen (nasopalatine foramen) appears as a round or oval radiolucency located at the midline between the roots of the maxillary central incisors.

Which screening tool used in dental hygiene practice assesses a patient's oral health literacy?

Answer: REALD-30 or NVS (Newest Vital Sign)

The Newest Vital Sign (NVS) and REALD-30 are validated tools used to assess health literacy, which helps the clinician tailor patient education appropriately.

Which of the following medical conditions requires a physician consultation before dental hygiene treatment due to risk of infective endocarditis?

Answer: Prosthetic heart valve

Patients with prosthetic heart valves are at high risk for infective endocarditis and may require antibiotic prophylaxis before invasive dental procedures.

Which oral lesion is characterized by a white, non-wipeable plaque that cannot be attributed to any other condition and carries a risk of malignant transformation?

Answer: Leukoplakia

Leukoplakia is defined as a white patch that cannot be rubbed off and cannot be classified as any other diagnosable disease, and it carries a risk of malignant transformation.

Which assessment tool is used to evaluate a patient's level of dental anxiety before treatment?

Answer: Corah Dental Anxiety Scale (DAS)

The Corah Dental Anxiety Scale (DAS) is a validated 4-question tool used to assess a patient's level of dental anxiety before treatment.

Erythroplakia is considered more clinically significant than leukoplakia because it has a higher rate of:

Answer: Malignant transformation

Erythroplakia (red velvety patches) has a significantly higher rate of malignant transformation than leukoplakia, with the majority of lesions showing dysplasia or carcinoma on biopsy.

Which diagnostic test is performed by applying a cold stimulus to a tooth to assess pulp vitality?

Answer: Thermal (cold) test

The thermal cold test uses a cold stimulus (e.g., ice, refrigerant spray) to assess whether the pulp is vital by testing for a pain response.

Fordyce spots in the oral cavity represent which anatomical variant?

Answer: Sebaceous glands without associated hair follicles

Fordyce spots are ectopic sebaceous glands (without hair follicles) found in the oral mucosa, appearing as yellowish, asymptomatic spots on the buccal mucosa and lips — a normal anatomical variant.

Which collimation device reduces patient radiation exposure by limiting the size of the X-ray beam?

Answer: Position indicating device (PID)

The position indicating device (PID) collimates and directs the X-ray beam to limit radiation scatter and reduce the area of tissue exposed.