DH203 Final | Questions with 100% Verified Answers |
Latest Update 2026/2027
Question: What is periodontium?
Answer: Also referred to a "supporting tissues of teeth" Or "attachment apparatus"
Question: Label the tissues of the perioduntium
Answer: 1. Gingiva
2. Cementum
3. PDL
4. Alveolar Bone
Question: What is the gingival margin?
Answer: Upper boundary edge (coronal) Lower edge (apical) is alveolar mucosa
Question: What is free gingiva?
Answer: AUnattached portion that surrounds a tooth in the region of the CEJ
B.Located coronal CEJ
C.Fits closely around the tooth but not directly attached
D.Attached by JE
E. Gingival margin follows tooth contour creating a scalloped outline
Question: What is attached gingiva?
Answer: -May be pigmented
-Found on the cervical third of the root and on the periosteum of the alveolar bone
-Located between free gingiva and alveolar mucosa
In health will appear pale or light coral pink
-May appear stippled in health
-Allows gingiva to allow tissue to withstand forces during chewing. Speaking, and
toothbrushing
Question: What is interdental gingiva?
Answer: Portion of the papilla that fills the interdental space (embrasure) between 2 adjacent
teeth just below the contact area
Question: Why will the COL NOT be present if there is a large space between 2 teeth or there
is a notable recession?
Answer: Papilla will be absent due to recession
Question: What PD is seen in a healthy gingival sulcus
Answer: 1-3mm
, Question: Characteristics of free gingiva:
Answer: - fits closely around the tooth but is not directly attatched to it
- unattached, may be gently retracted away from with probe
- forms the soft tissue lateral wall of the gingival sulcus
Question: What are the five functions of the PDL?
Answer: 1. Supportive to maintain tooth in socket
2. Sensory provides feelings like pressure and pain
3. Nutritive by providing nutrients to cementum and bone
4. Formative by providing cementoblasts and osteoblasts
5. Remodeling of alveolar bone in response to pressure
Question: What are the fibers of the matrix?
Answer: Collagen (majority) elastin, and reticular
Question: What is the extracellular matrix?
Answer: Gel-like substance (mesh like) containing interwoven protein fibers surrounding most
cells
Question: Label and define the PDL fibers
Answer: Horizontal
Vertical
interradicular
apical
alveolar crest fibers
Question: What is sulcular epithelium?
Answer: epithelium that faces the tooth surface without being in contact with the tooth
surface
Question: What is the oral epithelium?
Answer: epithelium that faces the oral cavity
Question: what is the Junctional Epithelium (JE)-
Answer: Forms the base of the sulcus and joins gingiva to the tooth
Question: what easiest point of entry for bacteria in relation to the connective tissue
Answer: JE
Question: Osteoblasts
Answer: produce the bone matrix of collagen fibers and other protein fibers
Latest Update 2026/2027
Question: What is periodontium?
Answer: Also referred to a "supporting tissues of teeth" Or "attachment apparatus"
Question: Label the tissues of the perioduntium
Answer: 1. Gingiva
2. Cementum
3. PDL
4. Alveolar Bone
Question: What is the gingival margin?
Answer: Upper boundary edge (coronal) Lower edge (apical) is alveolar mucosa
Question: What is free gingiva?
Answer: AUnattached portion that surrounds a tooth in the region of the CEJ
B.Located coronal CEJ
C.Fits closely around the tooth but not directly attached
D.Attached by JE
E. Gingival margin follows tooth contour creating a scalloped outline
Question: What is attached gingiva?
Answer: -May be pigmented
-Found on the cervical third of the root and on the periosteum of the alveolar bone
-Located between free gingiva and alveolar mucosa
In health will appear pale or light coral pink
-May appear stippled in health
-Allows gingiva to allow tissue to withstand forces during chewing. Speaking, and
toothbrushing
Question: What is interdental gingiva?
Answer: Portion of the papilla that fills the interdental space (embrasure) between 2 adjacent
teeth just below the contact area
Question: Why will the COL NOT be present if there is a large space between 2 teeth or there
is a notable recession?
Answer: Papilla will be absent due to recession
Question: What PD is seen in a healthy gingival sulcus
Answer: 1-3mm
, Question: Characteristics of free gingiva:
Answer: - fits closely around the tooth but is not directly attatched to it
- unattached, may be gently retracted away from with probe
- forms the soft tissue lateral wall of the gingival sulcus
Question: What are the five functions of the PDL?
Answer: 1. Supportive to maintain tooth in socket
2. Sensory provides feelings like pressure and pain
3. Nutritive by providing nutrients to cementum and bone
4. Formative by providing cementoblasts and osteoblasts
5. Remodeling of alveolar bone in response to pressure
Question: What are the fibers of the matrix?
Answer: Collagen (majority) elastin, and reticular
Question: What is the extracellular matrix?
Answer: Gel-like substance (mesh like) containing interwoven protein fibers surrounding most
cells
Question: Label and define the PDL fibers
Answer: Horizontal
Vertical
interradicular
apical
alveolar crest fibers
Question: What is sulcular epithelium?
Answer: epithelium that faces the tooth surface without being in contact with the tooth
surface
Question: What is the oral epithelium?
Answer: epithelium that faces the oral cavity
Question: what is the Junctional Epithelium (JE)-
Answer: Forms the base of the sulcus and joins gingiva to the tooth
Question: what easiest point of entry for bacteria in relation to the connective tissue
Answer: JE
Question: Osteoblasts
Answer: produce the bone matrix of collagen fibers and other protein fibers
