DH 203 Periodontology Study Guide FINAL | Questions
with 100% Verified Answers | Latest Update 2026/2027
Question: Clinical Periodontal Health
Answer: Minimal inflammation, <10% bleeding on probing, no progressive loss, probing depth
1-3
mm.
Question: Gingivitis
Answer: Gingival inflammation without clinical attachment loss or alveolar bone loss.
Question: Gingivitis Extent Classification
Answer: Localized: 10-30% BOP; Generalized: >30% BOP.
Question: Periodontitis Hallmark Finding
Answer: Clinical attachment loss (CAL) causing irreversible tissue and bone destruction.
Question: Reversibility: Gingivitis vs. Periodontitis
Answer: Gingivitis is reversible; periodontitis involves irreversible attachment and bone loss.
Question: 2017 Periodontal Staging
Answer: Describes severity, amount of tissue destruction, and overall treatment complexity.
Question: Stage III vs. Stage IV Periodontitis
Answer: Stage IV includes advanced functional defects threatening dentition, like bite
collapse.
Question: 2017 Periodontal Grading
Answer: Estimates rate of disease progression, effect of risk factors, and therapeutic
response.
Question: Periodontal Grading Modifiers
Answer: Primary risk modifiers include smoking status and diabetes control.
Question: Recurrent Periodontitis
Answer: Return of inflammation, bone loss, or pocketing after successful treatment.
Question: Four Primary Tissues of Periodontium
Answer: Gingiva, periodontal ligament (PDL), cementum, and alveolar bone.
, Question: Functions of Periodontal Ligament (PDL)
Answer: Suspends tooth in socket, absorbs forces, provides sensory, nutritional, and repair
support.
Question: Alveolar Bone Dependence
Answer: Alveolar bone existence depends on teeth; it resorbs following tooth loss.
Question: Junctional Epithelium Migration
Answer: Migrates apically as periodontitis develops, causing pocketing and attachment loss.
Question: Histologic Stages of Periodontal Disease
Answer: Initial, early (clinical gingivitis), established (chronic gingivitis), and advanced
(periodontitis) lesions.
Question: CEJ Relationships ("OMG")
Answer: Cementum Overlaps enamel, Meets enamel, or Gap exists between them.
Question: Natural Tooth vs. Dental Implant Anatomy
Answer: Implants lack a periodontal ligament, cementum, and equivalent vascularity.
Question: Peri-Implant Mucositis
Answer: Inflammation around an implant without progressive supporting bone loss.
Question: Peri-Implantitis
Answer: Inflammation around an implant with progressive bone loss and deeper probing
depths.
Question: Most Significant Modifiable Periodontal Risk Factor
Answer: Smoking tobacco.
Question: Effect of Smoking on Clinical Signs
Answer: Masks clinical inflammation and decreases bleeding on probing due to vascular
changes.
Question: Periodontal Risk Assessment Principle
Answer: Must be individualized, comprehensive, and periodically reassessed as patient factors
change.
Question: Biologic Equilibrium
Answer: The balance between microbial challenge and the host inflammatory response.
with 100% Verified Answers | Latest Update 2026/2027
Question: Clinical Periodontal Health
Answer: Minimal inflammation, <10% bleeding on probing, no progressive loss, probing depth
1-3
mm.
Question: Gingivitis
Answer: Gingival inflammation without clinical attachment loss or alveolar bone loss.
Question: Gingivitis Extent Classification
Answer: Localized: 10-30% BOP; Generalized: >30% BOP.
Question: Periodontitis Hallmark Finding
Answer: Clinical attachment loss (CAL) causing irreversible tissue and bone destruction.
Question: Reversibility: Gingivitis vs. Periodontitis
Answer: Gingivitis is reversible; periodontitis involves irreversible attachment and bone loss.
Question: 2017 Periodontal Staging
Answer: Describes severity, amount of tissue destruction, and overall treatment complexity.
Question: Stage III vs. Stage IV Periodontitis
Answer: Stage IV includes advanced functional defects threatening dentition, like bite
collapse.
Question: 2017 Periodontal Grading
Answer: Estimates rate of disease progression, effect of risk factors, and therapeutic
response.
Question: Periodontal Grading Modifiers
Answer: Primary risk modifiers include smoking status and diabetes control.
Question: Recurrent Periodontitis
Answer: Return of inflammation, bone loss, or pocketing after successful treatment.
Question: Four Primary Tissues of Periodontium
Answer: Gingiva, periodontal ligament (PDL), cementum, and alveolar bone.
, Question: Functions of Periodontal Ligament (PDL)
Answer: Suspends tooth in socket, absorbs forces, provides sensory, nutritional, and repair
support.
Question: Alveolar Bone Dependence
Answer: Alveolar bone existence depends on teeth; it resorbs following tooth loss.
Question: Junctional Epithelium Migration
Answer: Migrates apically as periodontitis develops, causing pocketing and attachment loss.
Question: Histologic Stages of Periodontal Disease
Answer: Initial, early (clinical gingivitis), established (chronic gingivitis), and advanced
(periodontitis) lesions.
Question: CEJ Relationships ("OMG")
Answer: Cementum Overlaps enamel, Meets enamel, or Gap exists between them.
Question: Natural Tooth vs. Dental Implant Anatomy
Answer: Implants lack a periodontal ligament, cementum, and equivalent vascularity.
Question: Peri-Implant Mucositis
Answer: Inflammation around an implant without progressive supporting bone loss.
Question: Peri-Implantitis
Answer: Inflammation around an implant with progressive bone loss and deeper probing
depths.
Question: Most Significant Modifiable Periodontal Risk Factor
Answer: Smoking tobacco.
Question: Effect of Smoking on Clinical Signs
Answer: Masks clinical inflammation and decreases bleeding on probing due to vascular
changes.
Question: Periodontal Risk Assessment Principle
Answer: Must be individualized, comprehensive, and periodically reassessed as patient factors
change.
Question: Biologic Equilibrium
Answer: The balance between microbial challenge and the host inflammatory response.
