Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
53 Cards in this Set
- Front
- Back
Evidence of plaque as etiological factor?
|
1) association of microbial plaque w/ gingivitis and periodontitis
2) specific bacteria for specific forms of perio disease 3) bacterai can damage tissue or activate tissue damiging host response 4) caries studies in gnotobiotic animals |
|
What did the study by Loe et al demonstrate?
|
the relationship b/w plaque and gingivitis in humans
-subjects stopped brushing teeth and w/i 7-21 days everybody developed gingivitis. -gram neg bacteria domianted |
|
which tooth surface accumulates the least amount of plaque?
|
lingual
|
|
where does most plaque accumulate?
|
interproximals of posteriors
|
|
What is the percent reduction in plaque and gingival bleeding by powered toothbrushes?
|
11% plaque reduction
6% bleeding reduction |
|
who benefits from powred tooth brushes
|
1) children and adolescence
2) children with disabilities 3) hospitilized patients 4) patients w/ fixed ortho appliences |
|
who does not beenfit from powred toothbrudhes?
|
patients with rheumatoid arthritis, chronic periodontitis, and good brushers
|
|
what are some abrasives in dentrifices?
|
silicone oxides, aluminum oxides,granular polyvinyl chlorides, calcium pyrophosphates, and calcium carbonate.
|
|
what percent of dentrifices contain fluoride?
|
90%
|
|
what is the percent comp of surfactants in dentrifices?
|
1-3%
|
|
what is the percent comp of abrasives in dentrifices?
|
20-40%
|
|
hpw much faster is dentin abraded compared to enamel? what about cementum?
|
25 times faster than enamel
35 times faster than enamel |
|
what is the percent comp of binders in dentrifices?
|
1-2%
|
|
what is the percent comp of humectants in dentrifices?
|
20-60%
|
|
function of humectants?
|
retain moisture and prevent hardening
|
|
what is the percent comp of water in dentrifices?
|
15-50%
|
|
what amount must flouride be present in dentrifices to be effective?
|
about 1000ppm
|
|
function of potassium nitrate and strontium chloride in dentrifices?
|
desensitizing agents
|
|
function of pyrophosphates in dentrifices?
|
anticalculus agents
|
|
how do anticalculus agents work?
|
interfere w/ crystal formation of calculus, but does not affect flouride in paste or increase tooth sensitivity.
-does not affect SUBGINGIVAL calculus -does not affect EXISITING calculus -reduce supragingival calculus by about 30% |
|
function of zin in dentrifices?
|
-traps phosphates
-inhibits nucleation of calculus and coats crystal |
|
function of gantrez?
|
-traps phosphates
-inhibits nucleation of calculus and coats crystal |
|
function of triclosan?
|
anti-gingivitis agent
antibiotic? |
|
types of stains:
|
1) intrinsic
-part of tooth structure -not removable by mechanical action, but can be bleached 2) extrinsic -tooth surface -caused by food, drink, and smoking -can be mechanically removed by prophy or abrasive dentrifices |
|
what are examples of intrinsic staining?
|
1) TETRACYCLINE STAIN
2) FLUOROSIS 3) DISCOLORATION FROM AGING |
|
what brushing technique for perio patients?
|
Bass technique (vibrating) w/ sulcular emphasis
|
|
brushing technique for kids?
|
scrub method
-horizontal |
|
describe the Bass and Modified Bass methods of brushing:
|
1) place brush parallel to occlusal plane
2) bristles placed at ging. margin w/ 45% angle 3) firm back-and-forth brushing for 10 strokes. ---concentrates on apical 1/3 of crown and ging sulci 4) Modified bass-roll bristles toward occlusal 5) repeat above for next 3 teeth anteriorly until all surfaces and arches are done 6) redo everything for the occlusal surfaces |
|
describe the Stillmen method of brushing:
|
same as Bass method, except the SIDES of the bristles are used instead of the ENDS!!
-penetration into ging sulci is avoided -RECOMMENDED FOR PATIENTS WITH GINGIVAL RECESSION AND ROOT EXPOSURE ----PREVENTS ABRASIVE TISSUE DESTRUCTION |
|
describe the Charters method of brushing:
|
bristles point 45 degress AWAY from gingiva.
-ends dont touch gingiva -sides of bristles mussage gingiva to increase bloodflow -SUITABLE FOR TEMP CLEANING IN AREAS OF HEALING WOUNDS AFTER PERIODONTAL SURGERY |
|
where does perio usually develop?
|
interpoximals
|
|
specific interdental cleaning tools are recommended based on:
|
1) size of interdental space
2) presence of furcation 3) tooth alignment 4) presence of ortho appliances or fixed prosthesis |
|
negative of dental floss?
|
often misses plaque on root groove surfaces and furcations
|
|
specific flosses are recommend based on?
|
tightness of tooth contacts
roughness of proximal surfaces patients manual dexterity |
|
dental floss technique?
|
-floss must contact line angle to line angle of proximal surface
-must glean subgingival area 1) grab 12-18 inch floss 2) move thru contact point via back-forth motion 3) wrap around prox surf and move to marginal ging 4) move across to adjecent tooth and do the same 5) rpeat for whole dentition |
|
how low is the use of floss?
|
only 8%
|
|
what interdental cleaning devices are recommended for patients w/ perio or exposed root surfaces?
|
interproximal brushes and others
|
|
massaging gingiva causes
|
1) epithelial thickening
2) increased keratinization 3) increased blood circulation 4) increased mitotic activity -not in sulcular epithelium and interdental gingiva |
|
oral irrigator benefit?
|
-clean non-adherent bacteria and debris better than toothbrushes and mouthrinses
-distrupts and detoxified subgingival plaque -can deliver antimicrobial agents into periodontal pockets -particularly beneficial for ortho appliances and fixed prostheses |
|
SUBGINGIVAL irrigation w/ H20 or chlorohexidine?
|
chlorohexidine diluted to 1/3 produces significant results.
water is not effective in flushing SUBGINGIVALLY -it is effective for SUPRAGINGIVAL irrigation |
|
is SUBGINGIVAL irrigation recommended for patients requiring antibiotic prophylaxis before dental treatment?
|
no, especially if inflammation is present b/c of transient bacteremia.
-SUPRAGINGIVAL irrigation IS recommended |
|
is one-time SUBGINGIVAL irrigation at the dental office effective?
|
no, better during routine home use
|
|
difference b/w root surface vs crown surface?
|
root surface (cementum) has more organic material. once demin has occured, collagen is exposed.
--leads to rapid decay |
|
what amoutn of flouride is more effective in dentrifices, 1000 or 5000?
|
5000ppm
|
|
patients with many caries or at high risk should use what conc flouride dentrifices?
|
5000ppm
|
|
what are the 2 ADA accepted agents for the treatment of gingivitis?
|
1) chlorohexidine digluconate
2) essential oils |
|
chlorohexidine digluconate side effects?
|
1) brown staining
2) impairment of taste perception |
|
what essential oils are used in oral rinses?
|
thymol, eucalyptol, menthol, and methyl salicylate
|
|
triclosan in toothpaste is more effective w/?
|
zinc citrate and copolymer of methoxyethylene
|
|
what is a disclosing agent?
|
stains bacteria to analyze oral hygene effectiveness
|
|
what is the Plaque Index of Silness and Loe?
|
more convenient plaque index that does not require staining.
|
|
what is the bleeding point index?
|
provides evaluation for gingival inlammation .
-prome 1mm into gingival sulcus and drag. wait 30sec and check for bleeding. |
|
what is Targetted hygeine?
|
access to gingival margins of all tooth surfaces during brushing
|