Module 1 Intro to the tissues of the Periodontium Flashcards
The study of that branch of dentistry dealing with diagnosis, treatment and prevention of disease of the supporting and investing tissues of the teeth
Periodontology
What is the periodontium
The functional system of the teeth and attached them to the jaw bone
The alveolar bone proper is also known as
the cribriform plate
What are the tissues of the periodontium
gingiva, PDL, cementum, alveolar bone / process
where is the gingiva attached
at the junctional epithelium
what are the layers of gingiva mucosa
outer epi layer, CT core
Where does mucosa extend to
extend to cover the alveolar bone
What are the 4 main anatomical areas of the gingiva
free, attached, sulcular, interdental gingiva
This gingiva is slightly coronal to the CEJ
the free gingiva
where is the free gingiva attached
at the junctional epithelium
what does the free gingiva form
the wall of the sulcus
in health what does the free gingiva follow
the contour of the tooth
where does the attached gingiva begin? end
at the junctional epithelium, at the mucogingival junction
where is the attached gingiva typically the narrowest
at the premolars
what is the purpose of the alveolar gingiva
the underlying structures
what is the sulcular gingiva
the space between the tooth and the free gingiva
what is the normal depth of the sulcus
1-3 mm
what are the two parts of the interdental gingiva
lingual and facial papilla
the lateral borders of the interdental papilla are formed by
the free gingiva
What is the col
the indentation of the interdental gingiva below the contact area
what is the purpose of the interdental papilla
to prevent the impaction of food
What is the free gingival groove
marks the free and attached gingiva
what is the mucogingival junction
marks the junction between the alveolar mucosa and the attached gingiva
Soft dense fibrous CT attaches to the root of the teeth and connects it to the bone around the teeth
PDL
functions of PDL (6)
supportive, absorptive, formative, sensory, nutritive, resorptive
thin mineralized CT that covers the dentin
cementum
which is harder dentin or cementum
dentin
CEJ
where the cementum and the enamel meet
True or False: is cementum resistant to resorption
true
To compensate for occlusal wear the cementum :
deposits in the apex of the root
Mineralized CT that contains 60% inorganic, 25 % inorganic and 15% water
alveolar bone
what are the three layers of alveolar bone
Cortical bone/ plate, alveolar bone proper, cancellous/ spongy bone
Alveolar bone proper is also known as
cribriform plate
where is the PDL embedded
in the alveolar bone proper
This layer of alveolar bone is composed of compact dense bone
cortical plate/ bone
in relation to the jaw, where is the cortical bone located
outside the jaw
in relation to the alveolar bone proper where is the cortical bone located
around the alveolar bone proper
where is the cortical bone the thickest
in the buccal side of the molars
the most coronal part of the alveolar bone is
the alveolar crest
where is the alveolar crest located
1-2 mm apical of the CEJ
where is the spongy bone located
between the cortical bone and the alveolar process
What is the nerve supply of the mand and max
The trigeminal nerve
What branch of the trigeminal nerve innervates the max
the 2nd branch of the trigeminal nerve
which branch of the maxillary nerve of the trigeminal nerve supplies the gingiva and the teeth
the superior alveolar nerve - posterior, middle and anterior
what nodes drains the PDL
the submandibular lymph nodes
The deep cervical lymph nodes drains
the palatal gingiva of max
the submental nodes also drain
the gingival lower incisors (PDL too)
