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DH 101 Ch 15,20,21,22,& 27 Study Guide
Terms in this set (54)
What are 2 procedures that drying the supragingival calculus facilitate?
Exploring and scaling
Describe Manual Periodontal Probes
A slender instrument with a smooth, rounded tip designed for examination of the depth and topography of a gingival sulcus or periodontal pocket
Name 3 parts of a probe
Handle, angled shank, and the working end
A diseased gingival sulcus
How is the probing pocket depth (PD) measured?
From base of pocket (top of attached periodontal tissue) to the gingival margin
What kind of stroke is used by the probe to move subgingivally through the pocket?
Where is the probe inserted on molars and premolars?
Distal line angle
Where is the probe inserted on anterior teeth?
From the midline of facial and lingual surfaces
What does the 'clinical attachment level' refer to?
The position of the periodontal attached tissues at the base of a sulcus or pocket
Describe the working end of a metal explorer
Slender, wire-like, metal tip that is circular in cross section and tapers to a fine sharp point
Where is supragingival calculus most commonly found?
Lingual surfaces of the mandibular anterior teeth and facial surfaces of maxillary 1st & 2nd molars- opposite of the openings to the salivary ducts
Is subgingival calculus usually localized or generalized?
It could be either
What does Fremitus mean?
-Palpable vibration or movement
-Tooth has excess contact, possibly related to premature contact. Usually tooth shows some signs of mobility because the excess contact forces the tooth to move
-Test is used in conjunction with occlusal analysis and adjustment
-Determination is made only on maxillary teeth
How long after all external material has been removed from the tooth surfaces does the acquired pellicle form?
Within minutes (fully formed in 30-90 minutes)
Name 4 things that the acquired pellicle (absorbed material) coats
-Existing calculus deposits
-Partial or complete dentures
Name 4 ways the acquired pellicle is significant
-Protective: provides barrier against acids
-Lubrication: keeps surface moist and prevents drying
-Nidus for bacteria: aiding the adherence of microorganisms
-Attachment of calculus
In "days 1 to 2" what does the early biofilm primarily consist of?
Gram (+) cocci
Which type of streptococcus dominates the bacterial population in the first 2 days of early biofilm?
Streptococcus mutans & Streptococcus sanguis
How long does it take for gingivitis to develop when biofilm is left undisturbed on the tooth surface?
Subgingival biofilm is predominantly gram (-) or gram (+)?
What is the composition of dental biofilm?
Microorganisms & EPS = 20% that are organic and inorganic solids. The other 80% is water
Which surface in the mouth has the least amount of biofilm?
Palatal surfaces of maxillary teeth due to tongue activity (chewing, swallowing, & speaking)
Calculus is essentially mineralized ___________ _____________
What is the critical pH for enamel to demineralize?
4.5 - 5.5
What is the critical pH for root surface demineralization?
6.0 - 6.7
What is materia alba?
White/grayish white bulky, cottage cheese like textured material. Loosely adherent mass of bacteria and cellular debris that frequently occurs over the surface of undisturbed biofilm.
Which can be removed with a water spray or oral irrigator?
Place the following steps in chronological order : Biofilm formation, mineralization, pellicle formation
1. Pellicle formation
2. Biofilm formation
What is the most highly mineralized tissue in the body?
Dental enamel- contains 95-97% inorganic salts
How many hours can mineralization begin after a patient's personal daily oral hygiene is neglected?
24 - 48 hours
What do heavy calculus formers have higher levels of in their saliva?
Calcium and phosphorus
Calculus inhibitors include _________________________ & ______________________
Zinc salts & Pyrophosphate
Name the 2 surfaces (& arch) of the teeth calculus most frequently forms on
-facial surface of maxillary molars
-lingual surface of mandibular anterior teeth
"Tarter-control" toothpaste and mouth rinse helps to prevent the formation of tarter due to the chemotherapeutic action of what 4 agents?
Tactile examination for subgingival calculus can be detected by using which 2 instruments?
Probe and explorer
Despite excellent oral home care, why can quite a bit of calculus still form in the elderly?
Because calculus formation increases with age
Which type of toothpaste, bleaching products and mouth rinses should be suggested to your patients?
Only those products which have the ADA seal of approval
Extrinsic stains may be caused by:
Name the 3 ways that stains occurring directly on the tooth surface can be removed.
-Patients routine personal care
Name 2 agents used in mouth rinses that are effective against biofilm and plaque formation
Chlorhexidine & alexidine
What kind of caries-effect does chewing Betel leaf have?
It has a caries-inhibiting effect. Turns teeth black
Do all pulpless teeth discolor?
What is the main concern of Tetracycline use during the 3rd trimester of pregnancy or to the child in infancy & early childhood?
Discoloration of the teeth
What is it called when 'white spots form on a single tooth' due to ameloblastic disturbances?
What condition develops when enamel hypomineralization occurs resulting from ingestion of "excessive fluoride" during tooth mineralization?
Does an extrinsic stain on the enamel alone, such as coffee or tobacco, cause loss of teeth?
No- extrinsic stains are mainly esthetic concerns
What does intrinsic stain coming from an 'outside' or 'exogenous' source mean?
examples: tobacco, coffee, tea, wine, and green stains
Which infectious organisms (bacteria) colonize the teeth and help form the dental biofilm responsible for the dental caries process?
-Mutans streptococci (Streptococcus mutans & Streptococcus sobrinus)
-Bifidobactera is associated with childhood caries
Dental caries is an _______________ & transmissible disease. It is also ____________
Infectious & Preventable
Name 4 frequent fermentable carbohydrates?
What are 2 protective properties and functions of saliva?
-Buffer the acids
-Supply minerals to replace Calcium and Phosphate ions dissolved from the tooth during demineralization
What instrument would be the best to use to detect coronal caries on a remineralized or demineralized 'white spot lesion' surface in both the early and later stages?
What kind of radiographs would be taken to view possible proximal dental caries?
What would be the treatment plan for a patient with a definite cavitation (carious lesion)?
Appoint to the dentist for restoration
THIS SET IS OFTEN IN FOLDERS WITH...
DH101 ch. 28, 29 & instruments
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DH 101 Ch. 12, 15-18, & 23 Jeopardy
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