TCDHA PERIODONTICS EXAM 2025/2026 QUESTIONS
WITH ANSWERS GRADED A+
✔✔Chronic periodontitis Signs and symptoms - ✔✔Pain usually is NOT a symptom.
Clinical appearance is NOT a reliable indicator of the presence or severity of chronic
periodontitis
✔✔Chronic periodontitis - ✔✔most common form, Irreversible loss of attachment bone.
✔✔slight chronic periodontitis - ✔✔no more than 1 to 2mm of clinical attachment loss
✔✔moderate chronic periodontitis - ✔✔3-4 mm of clinical attachment loss
✔✔Severe chronic periodontitis - ✔✔5 mm or more of clinical attachment loss
✔✔Recurrent Chronic Periodontitis - ✔✔new signs of destructive periodontitis that
reappear after therapy
✔✔Aggressive Periodontitis - ✔✔bacterial infection characterized by rapid destruction of
Periodontal ligament, Supporting alveolar bone
✔✔what are the three main categories for gingival diseases with modifying factors -
✔✔systemic, medications, malnutrition.
✔✔Periodontium? - ✔✔the functional system of tissues that surrounds the teeth and
attaches them to the bone
✔✔Gingiva - ✔✔Provides a tissue seal around the cervical portion of the tooth. Holds
tissue against the tooth during mastication
✔✔Anatomic Areas of the Gingiva - ✔✔Free gingiva, Gingival sulcus, Interdental
gingiva, Attached gingiva
✔✔Free Gingiva - ✔✔Located coronal to the CEJ. Surrounds the tooth like a turtleneck.
Fits snugly around the tooth but
is not attached
✔✔Gingival Sulcus - ✔✔It is the space between
the free gingiva and the
tooth surface
✔✔what does he base of the sulcus is form? - ✔✔junctional epithelium
, ✔✔col - ✔✔depression in the interdental gingiva that lies directly apical to the contact
area.
✔✔Attached Gingiva - ✔✔It is located between
the free gingiva and the
alveolar mucosa
✔✔where is the attached gingiva the widest - ✔✔in the incisor and molar regions. It is
narrowest in premolar regions
✔✔Cementum - ✔✔Thin layer of hard, mineralized tissue that covers the surface of the
root. Light yellow. Overlies the dentin
✔✔Functions of Cementum - ✔✔Give attachment to collagen fibers of the periodontal
ligament
✔✔Alveolar Bone - ✔✔It surrounds and supports the roots of the teeth in the jaws.
Existence dependent on the presence of teeth
✔✔Alveolus - ✔✔bony socket that houses the root of the tooth
✔✔Cortical Bone - ✔✔hard outer wall of the jaws
✔✔Cancellous Bone - ✔✔Spongy, latticelike bone
filler between the cortical bone and the alveolar bone and the alveolar
bone proper
✔✔Two Types of Tissue? - ✔✔epithelial and connective
✔✔Tissues are comprised of both epithelial and connective tissues and are comprised
of? - ✔✔Cells, Extracellular matrix
✔✔Extracellular Matrix - ✔✔A gel-like substance containing interwoven protein fibers
that surrounds most cells.
✔✔differentiating between epithelial tissue and connective tissue? - ✔✔number of cells
and the amount of extracellular matrix in these two types of tissues
✔✔Epithelial Tissue - ✔✔Makes up the outer surface of the body (skin)
Lines the body cavities such as the mouth, stomach, and intestines
✔✔Composition of Epithelial Tissues - ✔✔Plentiful cells. comprised mostly of closely
packed cells.
WITH ANSWERS GRADED A+
✔✔Chronic periodontitis Signs and symptoms - ✔✔Pain usually is NOT a symptom.
Clinical appearance is NOT a reliable indicator of the presence or severity of chronic
periodontitis
✔✔Chronic periodontitis - ✔✔most common form, Irreversible loss of attachment bone.
✔✔slight chronic periodontitis - ✔✔no more than 1 to 2mm of clinical attachment loss
✔✔moderate chronic periodontitis - ✔✔3-4 mm of clinical attachment loss
✔✔Severe chronic periodontitis - ✔✔5 mm or more of clinical attachment loss
✔✔Recurrent Chronic Periodontitis - ✔✔new signs of destructive periodontitis that
reappear after therapy
✔✔Aggressive Periodontitis - ✔✔bacterial infection characterized by rapid destruction of
Periodontal ligament, Supporting alveolar bone
✔✔what are the three main categories for gingival diseases with modifying factors -
✔✔systemic, medications, malnutrition.
✔✔Periodontium? - ✔✔the functional system of tissues that surrounds the teeth and
attaches them to the bone
✔✔Gingiva - ✔✔Provides a tissue seal around the cervical portion of the tooth. Holds
tissue against the tooth during mastication
✔✔Anatomic Areas of the Gingiva - ✔✔Free gingiva, Gingival sulcus, Interdental
gingiva, Attached gingiva
✔✔Free Gingiva - ✔✔Located coronal to the CEJ. Surrounds the tooth like a turtleneck.
Fits snugly around the tooth but
is not attached
✔✔Gingival Sulcus - ✔✔It is the space between
the free gingiva and the
tooth surface
✔✔what does he base of the sulcus is form? - ✔✔junctional epithelium
, ✔✔col - ✔✔depression in the interdental gingiva that lies directly apical to the contact
area.
✔✔Attached Gingiva - ✔✔It is located between
the free gingiva and the
alveolar mucosa
✔✔where is the attached gingiva the widest - ✔✔in the incisor and molar regions. It is
narrowest in premolar regions
✔✔Cementum - ✔✔Thin layer of hard, mineralized tissue that covers the surface of the
root. Light yellow. Overlies the dentin
✔✔Functions of Cementum - ✔✔Give attachment to collagen fibers of the periodontal
ligament
✔✔Alveolar Bone - ✔✔It surrounds and supports the roots of the teeth in the jaws.
Existence dependent on the presence of teeth
✔✔Alveolus - ✔✔bony socket that houses the root of the tooth
✔✔Cortical Bone - ✔✔hard outer wall of the jaws
✔✔Cancellous Bone - ✔✔Spongy, latticelike bone
filler between the cortical bone and the alveolar bone and the alveolar
bone proper
✔✔Two Types of Tissue? - ✔✔epithelial and connective
✔✔Tissues are comprised of both epithelial and connective tissues and are comprised
of? - ✔✔Cells, Extracellular matrix
✔✔Extracellular Matrix - ✔✔A gel-like substance containing interwoven protein fibers
that surrounds most cells.
✔✔differentiating between epithelial tissue and connective tissue? - ✔✔number of cells
and the amount of extracellular matrix in these two types of tissues
✔✔Epithelial Tissue - ✔✔Makes up the outer surface of the body (skin)
Lines the body cavities such as the mouth, stomach, and intestines
✔✔Composition of Epithelial Tissues - ✔✔Plentiful cells. comprised mostly of closely
packed cells.
