DENTAL HYGIENE NATIONAL BOARD EXAM
STUDY GUIDE 2026 FULL QUESTIONS AND
ANSWERS GRADED A+
◉ Silk sutures are. Answer: non-absorbable
◉ Does a periodontal dressing prevent plaque build up. Answer: no
◉ How do you treat an infrabony defect. Answer: Guided tissue
regeneration
osseous or soft tissue graft
(the picture is of a dogs mouth, but still helpful as a visual)
◉ What are the four stages of fibrous repair?. Answer: 1. Blood
clotting
2. Wound cleansing
3. Tissue rebuilding
4. Wound remodeling
◉ At which stage of fibrous repair is granulation tissue introduced?.
Answer: 3. Tissue rebuilding
,◉ In which stage of fibrous repair are macrophages introduced?.
Answer: wound cleansing
◉ Tobacco use affects the periodontium by
a. vasodilation
b. loss of protective keratin
c. reduced blood supply to the tissues
d. enhanced phagocytosis. Answer: C. Reduced blood supply to the
tissues
◉ The most common type of bacteria on the dorsum of the tongue
and other soft tissues in a healthy mouth?
a. Streptococci
b. Staphylococci
c. Fusobacterium
d. porphyromonas. Answer: a. streptococci
◉ Porphyromonas gingivalis are?. Answer: Pathogenic bacillus
bacteria that are prevalent in many chronic periodontal diseases
◉ Initial gingival lesion (stage I) will exhibit. Answer: no clinical
signs
,◉ What bacteria is not associated with chronic periodontitis ?
A) T. Denticola
B) P. Intermedia
C) S. Mutans
D) P. Gingivalis. Answer: S. mutans
◉ Which of the following is a characteristic of the progression of
periodontal disease?
a. Cocci
b. Motile organisms
c. Aerobic organisms
d. gram + organisms. Answer: motile organism
◉ Endotoxins
A) Is produced by a mast cell
B) Stimulates osteoclast activity
C) Is produced by B-lymphocytes
D) Stimulates the secretion of immunoglobulins. Answer: Stimulates
osteoclast activtity
, ◉ Which assessment finding indicates that a pts periodontal disease
progressing?
a. periodontal pockets
b. BOP
c. evidence of radiographic bone loss
d. attachment loss increasing over time. Answer: attachment loss
increasing over time
◉ Sharpeys fibers are found in. Answer: Cementum and alveolar
bone
◉ when probing a class II furcation. Answer: the probe will
penetrate the furcation but not pass complete through
◉ After perio surgery, patients who smoke. Answer: heal slower due
to reduced fibroblast migration and a reduction in the positive
effects of the inflammatory response
◉ circular fibers
a. resist horizontal tooth movements
b. supply nutrient to periodontal structures
c. resist intrusive and extrusive forces on a tooth
d. assist in maintaining marginal gingival integrity with a tooth
surface. Answer:
STUDY GUIDE 2026 FULL QUESTIONS AND
ANSWERS GRADED A+
◉ Silk sutures are. Answer: non-absorbable
◉ Does a periodontal dressing prevent plaque build up. Answer: no
◉ How do you treat an infrabony defect. Answer: Guided tissue
regeneration
osseous or soft tissue graft
(the picture is of a dogs mouth, but still helpful as a visual)
◉ What are the four stages of fibrous repair?. Answer: 1. Blood
clotting
2. Wound cleansing
3. Tissue rebuilding
4. Wound remodeling
◉ At which stage of fibrous repair is granulation tissue introduced?.
Answer: 3. Tissue rebuilding
,◉ In which stage of fibrous repair are macrophages introduced?.
Answer: wound cleansing
◉ Tobacco use affects the periodontium by
a. vasodilation
b. loss of protective keratin
c. reduced blood supply to the tissues
d. enhanced phagocytosis. Answer: C. Reduced blood supply to the
tissues
◉ The most common type of bacteria on the dorsum of the tongue
and other soft tissues in a healthy mouth?
a. Streptococci
b. Staphylococci
c. Fusobacterium
d. porphyromonas. Answer: a. streptococci
◉ Porphyromonas gingivalis are?. Answer: Pathogenic bacillus
bacteria that are prevalent in many chronic periodontal diseases
◉ Initial gingival lesion (stage I) will exhibit. Answer: no clinical
signs
,◉ What bacteria is not associated with chronic periodontitis ?
A) T. Denticola
B) P. Intermedia
C) S. Mutans
D) P. Gingivalis. Answer: S. mutans
◉ Which of the following is a characteristic of the progression of
periodontal disease?
a. Cocci
b. Motile organisms
c. Aerobic organisms
d. gram + organisms. Answer: motile organism
◉ Endotoxins
A) Is produced by a mast cell
B) Stimulates osteoclast activity
C) Is produced by B-lymphocytes
D) Stimulates the secretion of immunoglobulins. Answer: Stimulates
osteoclast activtity
, ◉ Which assessment finding indicates that a pts periodontal disease
progressing?
a. periodontal pockets
b. BOP
c. evidence of radiographic bone loss
d. attachment loss increasing over time. Answer: attachment loss
increasing over time
◉ Sharpeys fibers are found in. Answer: Cementum and alveolar
bone
◉ when probing a class II furcation. Answer: the probe will
penetrate the furcation but not pass complete through
◉ After perio surgery, patients who smoke. Answer: heal slower due
to reduced fibroblast migration and a reduction in the positive
effects of the inflammatory response
◉ circular fibers
a. resist horizontal tooth movements
b. supply nutrient to periodontal structures
c. resist intrusive and extrusive forces on a tooth
d. assist in maintaining marginal gingival integrity with a tooth
surface. Answer:
