WorksheetsDHE 121 Week 13 Periodontium
Total questions: 62
Worksheet time: 53mins
The periodontium includes:
Cementum
Pulp
PDL
Alveolar process
(a) seals the dentinal tubules.
Cementum anchors teeth to bone via the (a) .
1. Cementum is vascular.
2. Cellular cementum forms throughout the life of the tooth, and is the 3rd hardest tissue in the body.
First statement true, second false
First statement false, second true
Both true
Both false
Cementum gets nutrition from the:
(a)
Cementum is by weight _____% inorganic material , _____% organic material, ______% water.
65, 20, 10
65, 23, 12
68, 24, 12
Crystalline formation of mature cementum consists of:
Calcium hydroxyapatite
Carbon hydroxyapatite
Zinc hydroxyapatite
Cadmium hydroxyapatite
_________ cementum forms first. At least one layer of the ________ cementum covers the entire outer surface of each root .
(a)
(a) cementum forms throughout life, and is deposited mainly in the apical 1/3 of each root.
What type of cementum is this?
(a)
What type of cementum is this?
(a)
What % of people have a pattern that overlaps the CEJ? It can be mistaken for calculus.
(a)
What % of people have a pattern that meets the CEJ?
(a)
What % of people have a pattern that has a gap at the CEJ? These patients will experience sensitivities.
(a)
This is the excessive production of cellular cementum, which mainly occurs at the apex or apices of the tooth.
(a)
(a) are mineralized spherical bodies of cementum found either attached to the cemental root surface or lying free in the PDL.
Alveolar process is by weight _____% inorganic material , _____% organic material, ______% water.
60, 20, 15
60, 25, 15
60, 30, 15
The green area depicts the:
Cribifrom plate
Cancellous bone
Cortical bone
The red arrows are pointing to the:
(a)
The red arrows are pointing to the:
(a)
The red arrow depicts the (a) septum of cancellous bone.
The green lines depict the (a) septum of cancellous bone.
Interdental septum
Interradicular septum
Interdental septum
Interradicular septum
In regards to bone remodeling from orthodontics, what type of bone cells will you see in the compression zone?
(a)
In regards to bone remodeling from orthodontics, what type of bone cells will you see in the tension zone?
(a)
Diagnosis: Fenestration
Cause: osteoblast malfunction during bone devt. in the cortical bone area
Stage: alveolar bone development
Developmental
Diagnosis: Fenestration
Cause: osteoblast malfunction during bone devt. in the cortical bone area
Stage: alveolar bone development
Hereditary
Diagnosis: Dehiscence
Cause: osteoblast malfunction during bone devt. in the marginal cortical bone area
Stage: alveolar bone development
Developmental
Diagnosis: Dehiscence
Cause: osteoblast malfunction during bone devt. in the marginal cortical bone area
Stage: alveolar bone development
Hereditary
Which is NOT a function of the PDL?
Shock absorber
Sensory components
Nutrition to cementum & bone
Formation of ameloblasts
Remodeling
Which is NOT a PDL vascularity component?
Blood cells + lymphatics
Intracellular substance
Fibroblasts
Vascular + nerve supply
Energy supply
The (a) fiber group is the 1st lost to periodontal disease. It is attached to cementum just below the CEJ, and runs inferior and outward direction to insert into alveolar crest.
Function: resist tilting, intrusive, extrusive, and rotational forces
The (a) fiber group is located apically to the alveolar crest group and runs perpendicular to the long axis of the tooth.
Function: Stabilizes tipping forces which work to force the tooth to tip M, D, L, F, and to resist rotational forces.
The (a) fiber group makes up the bulk of the fibers around the roots, and runs in an oblique direction to insert into alveolar bone more coronally.
Function: resist inward + rotational forces.
The (a) fiber group radiates from cementum around the root apex to surrounding alveolar bone proper, forming base of the alveolus.
Function: resist upward/extrusive + rotational forces
The (a) fiber group runs from the cementum of one root to cementum of other roots. No bony attachment.
Function: rotational, tilting, lateral forces
Select the alveolodental ligaments.
Alveolar crest
Horizontal
Oblique
Apical
Interradicular
Another principal fiber other than the alveolodental ligament is the (a) ligament. It inserts mesiodistally into the cervical cementum of neighboring teeth, at a height coronal to the alveolar crest of the ABP and apical to the base of the JE.
The (a) ligament is a cementum to cementum attachment connecting all the teeth of the arch.
The function of this ligament is to resist rotational forces and hold the teeth in interproximal contact.
Name the alveolodental ligament group.
(a)
Name the alveolodental ligament group.
(a)
Name the alveolodental ligament group.
(a)
Name the alveolodental ligament group.
(a)
Name the alveolodental ligament group.
(a)
Name the ligament.
(a)
The epithelial rests of Malassez are remnants of the (a) . This can pose a problem resulting in an abscess.
1. The gingival fiber group only supports the marginal gingiva.
2. The functions include: maintaining gingival integrity, anchoring, and protection.
First statement true, second false
First statement false, second true
Both true
Both false
What type of bone has the patient lost between the roots of the molars?
(a)
What fiber group of the periodontal ligament was the first group to be affected by periodontal disease in this patient?
(a)
The patient’s loss of cementum, alveolar bone, and periodontal ligament were a part of his/her?
TMJ apparatus
Periodontium
Principal fiber group
Alveolodental ligament
What type(s) of cementum of the posterior teeth was initially lost as a result of the root exposure?
Secondary dentin
Cellular cementum
Cervical enamel
Acellular cementum
The (a) ligament is missing here.
Which cell population has been active in removing the alveolar bone in the patient?
(a)
(a) fibers are very strong collagen fibers from the PDL that are partially inserted into the outer surface of cementum at 90 degrees. They are inserted on the other end into the alveolar process.
Cementum is a hard tissue that is thickest at the tooth's apex or apices and in the interradicular areas of multirooted teeth and thinnest at the (a) .
The (a) cementum, also called primary cementum, consists of the 1st layers of cementum deposited at the DEJ, and contains no embedded cementocytes.
The (a) cementum, also called secondary cementum, is deposited later than primary type and many embedded cementocytes are found within it.
The (a) is the most cervical rim of the alveolar bone proper.
(a)
Reversal lines in cementum = resorption
Arrest lines cementum= appositional growth
True
False
The black arrows depict cementoblasts within PDL
arriving to produce new cementum.
True
False
The white arrows are embedded (a) .
What type of cementum loss is depicted here?
Acellular
Cellular
Both acellular and cellular
None of the above
