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Perio II Quiz 1

Terms in this set (24)

The concentration of supragingival calculus is composed of ___% of ______minerals?
80% of inorganic minerals
The compostion of calculus is primarily what 2 things?
primarily calcium phosphate and calcium carbonate.
Calculus can also contain traces of?(6)
1. magnesium
2. sodium
3. potassium
4. fluoride
5. zinc
6. strontium
What is the predominant crystal type found in mature supragingival calculus?
Hydroxyapatite
What can cause inflammation due to inadequate space between the crown margin and crest of bone?
Biologic impingement
T/F? All patients should have a thorough periodontal evaluation before going into orthodontics?
True
T/F? Malocclusion is a contributing factor to periodontal disease?
False/ it is not a cause of periodontal disease, however poorly aligned teeth can complicate daily plaque control.
What are some trauma induced problems that can cause direct damage to the periodontium?
1. habits such as scratching the gingiva with fingernails
2. food impaction
3. chemical injury(cocaine use)
4. oral piercings
5. Prostheses(ill fitting dentures)
6. occlusal forces
What is a normal force produced during the act of chewing food called?
Functional occlusal forces
What is the result of tooth to tooth contact,(such as clenching and bruxism) when NOT in the act of eating called?
Parafunctional occlusal forces
What is the excessive occlusal forses on a HEALTHY periodontium called?
Primary occlusal trauma
What is the occlusal forces on a periodontium already weakened by periodontitis called?
secondary occlusal trauma
What are some signs of occlusal trauma?(5)
1. tooth mobility
2. sensitivity to pressure
3. migration of teeth
4. enlarged, funnel-shaped PDL space
5. alveolar bone resorption
T/F? Missing teeth that have not been replaced can cause problems for perio patients.
true
How do unreplaced missing teeth cause problems to the periodontium?
It causes the other teeth to migrate, creating spaces that complicate plaque control.
T/F? Subgingival calculus can be easily and always be seen on radiographs?
false/radiographs are NOT a reliable way to detect calculus, this is why we use our explorers.
Can calculus become embedded into the cementum, and is it easy to remove?
Yes it can, and it can be very difficult or even impossible to remove.
Calculus is formed by the deposition of _____ and ____ salts in bacterial plaque.
calcium and phosphate salts
Supragingival calculus is formed by?
mineral crystals in a matrix of plaque micro-organisms, glucans, glycoproteins, and lipids.
The mineral content that is responsible for supragingival calculus comes from?
saliva
What is a concentration composed of calcium phosphate,calcium carbonate, magnesium phosphate, and other elements within an organic matrix composed of desquamated epithelium, mucin, micro-organisms, and other debris called?
calculus
The biologic width is the space between the ____ and the ____?
base of the sulcus and the alveolar crest
In a health individual the biologic width will measure about?
2mm
The space between the base of the sulcus and the alveolar crest is occupied by what kind of tissue?
connective tissue
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