DH 1350 Quiz 13 Chapter 14

The components of the periodontium include:

alveolar bone, root, and periodontal ligament

root, cementum, and periodontal ligament

alveolar bone, ginigval tissue, and periodontal ligament

periodontal ligament, cementum, and alveolar bone

The alveolar bone/ ridge or process is
composed of:  

a combination of bone, cartilage and  cementum

alveolar bone proper

supporting alveolar bone

supporting alveolar bone and alveolar bone proper

All bundles of principal fibers of the periodontal ligament are embedded at either end in some tooth tissue or some closely associated tissue. They may be embedded either with: 

One end in cementum and the other in lamina dura (true alveolar bone), or one end in the
cementum and the other in cervical enamel

One end in cementum and the other in lamina dura; or one end in cementum and the other in trabecular bone

One end in the cementum and the other in trabecular bone; or one end in cementum and the other in cortical bone

One end in cementum and the other in lamina dura; or one end in cementum and the other also in cementum (of an adjacent tooth)

Three types of transitional interfaces may be present at the CEJ

1. Cementum may _________ the enamel at the CEJ and be mistaken for _________  .

2. Cementum  and enamel may  ______   at the CEJ and pose ________  for the patient or clinician.

3. A gap may exist between cementum and enamel, exposing ________ and causing _________   root surfaces.

Cells found in the periodontal ligament include: 

Blood cells, endothelium, fibroblasts, cementoblasts, osteoblasts, osteoclasts and
odontoclasts only

Blood cells, endothelium, fibroblasts and epithelial rests of Malassez only

Cementoblasts, osteoblasts, osteoclasts and odontoclasts only

Blood cells, endothelium, fibroblasts, cementoblasts, osteoblasts, osteoclasts, odontoclasts and epithelial rests of Malassez only

A cementicle is likely the result of microtrauma, and can be describes as: 

A cementoblast that becomes entrapped in cementoid

An abnormal deposit of spherical cementum near the CEJ

A mineralized body of cementum found on the root or in the periodontal ligament

An excessive deposit of cementum at the root apex or apcies

Match the following terms with their  definitions:

Cortical bone
Alveolus
trabecular bone
interradicular septum

the individual tooth socket

compact bone on the facial and lingual surfaces of the alveolar process/ridge

the alveolar bone between the roots of multirooted teeth

cancellous bone that fills the space between compact bone

The functions performed by the periodontal ligament include: 

Transmits occlusal forces

Protects surrounding soft tissue structures

Cementum, dentin, and bone apposition

Cementum and bone resorption

Provides nutrition for the periodontium

Unlike the soft connective tissue of the pulp, the nerve supply of the perioddontal ligament transmits pain, touch, pressure and temperture sensations. 

True
False

Which of the following does NOT come from the Mesoderm embryonic layer?

alveolar bone
dentin and pulp
cementum
periodontal ligament
none of these

The periodontal ligament appears on
radiographs as the ___________  , which is a radiolucent area between the lamina dura and the cementum which normally measures in the range of ________   millimeters.

From where do the structures of the the
periodontium originate?

dental sac
outer cells of the dental papilla
inner cells of the dental papilla
cervical loop

Match the following terms to their descriptors:
(avascular or vascular)

bone
cementum
dentin
pulp
enamel

Match the following terms to their descriptors.

cementoid
sharpey's fibers
cementocyte
hypercementosis
alveolar bone proper

embedded in both cementum and bone
also called cribriform or bundle bone
first cementum laid down
excessive cementum formation
embedded in cementum matrix

Bone cells which resorb bone are called ________  and reside in   __________

Bone cells which form bone are called ________  and cells which reside within bone matrix are called __________

The main prinicpal fiber group of the periodontal ligament is the alveolodental ligament which consists of five (5) fiber subgroups which include:

1.  
2.  
3.  
4.  
5.

Compare and contrast Acellular and Cellular Cementum: