Week 3

Which of the following epithelial tissues surrounding the tooth is nonkeratinized?

• Inner surface of the free gingiva

• outer surface of the free gingiva

• Papillae

• Attached Gingiva

The type of epithelial tissue that is found in the oral cavity is called:

• Stratified squamous epithelium

• Simple columnar epithelium

• Simple cuboidal epithelium

• Pseudo-stratified columnar epithelium

The periodontal ligament is composed of mainly individual fibers. Most of the PDL periodontal ligament fibers attach_______?

• Above the cementoenamel junction

• Near the crown

• Apical to the cementoenamel junction

PDL fibers are broken into two groups, namely the gingival fiber group and the principal fiber group. All of the following are included in the principal fiber group EXCEPT one. Which one is the EXCEPTION?

• Oblique fibers

• Transseptal fibers

• Horizontal fibers

• Alveolar crest fibers

• Apical Fibers

The cementum covering the root may have any one of three relationships with the enamel of the tooth crown. Which one of these is NOT one of these relationships?

• Gap-there is a small gap between the cementum and enamel

• Overlap-the cementum overlaps the enamel for a short distance

• Overgrowth-the enamel extends apically and can cover up to half of the root

• Meet- the cementum meets the enamel

Answer explanation

Remember "OMG"!! They either Overlap, Meet or Gap!

There are three different types of cementum: Intermediate, acellular and cellular. Cellular (Secondary) cementum has many attributes. Which one is NOT correct?

• Contains no living cells within its mineralized tissue

• Present in the apical and interradicular portions of the tooth

• Deposited in intervals throughout life (thickness increases with age)

• Less Sharpey's fibers

Principal Fiber Groups of the Periodontal Ligament join the tooth to the bone and are made up of bundles of ________ fibers.

Gingival Connective Tissue does not have very many cells (about 5%). The following are the cells present in gingival connective tissue, except one is NOT. Which one is NOT one of the cells in gingival connective tissue?

• Fibroblasts

• Mast Cells

• Osteoblasts

• Immune Cells (macrophages, neutrophils, lymphocytes)

The Alveolar process is the bone that surrounds and supports the roots of the teeth. What is the name of the bony socket, a cavity in the alveolar bone that houses the root of a tooth called (in the singular)

What is the coronal boundary or upper edge of the gingiva called?