Oral Ecosystem

t/f: teeth are shedding structures

false

t/f: gingiva is a shedding structure

true

t/f: alveolar mucosa is a shedding structure

true

t/f: the tongue is a shedding structure

true

dental carries become systemic when the ____ is infected

pulp

dental carries are caused by toxins from ________ attached to teeth

bacterial plaque

where the gingiva overlaps the enamel:

gingival crevice (sulcus)

what molecules provide the attachment for the epithelial attachment zone?

bacterial glycocalyx

what molecules provide the attachment for the connective tissue attachment zone?

type I collagen

the supracrestal attachment is comprised of what two structure?

epithelial attachment
connective tissue attachment

1st inflammation infection of the gingiva:

gingivitis

t/f: saliva is a microbe nutrient

true

Caused by bacterial plaque (biofilm) attached to the tooth primarily within the gingival crevice and is confined to the gingiva

gingivitis

t/f: gingivitis is associated with attachment and/or bone loss

false

t/f: gingivitis is a local, not systemic disease

false

t/f: periodontitis is a systemic disease

true

A break in the epithelium:

ulceration

t/f: plaque can be easily removed with water spray and rinsing

false

how long does it take for bacterial plaque to be established on the teeth?

8-24 hours

how long does it take for bacterial plaque to begin gum infection?

24-72 hours

t/f: plaque is dependent upon the foods we consume

false

An infection of the gingiva caused by bacterial plaque (biofilm) which is attached to the teeth at and below the gingival crevice and causes attachment loss:

periodontitis

the apical migration of the epithelial and connective tissue attachments and the subsequent loss of bone:

attachment loss

t/f: gingivitis cannot occur without periodontitis

false

t/f: periodontitis cannot occur without gingivitis

true

No BoP, probing depths 2-3mm, no erythema, edema, discomfort, and the patient is happy with the esthetics:

peri-implant health

your implant patient presents with presence of peri-implant soft tissue signs of erythema, edema, BoP and no additional bone loss following initial healing. What is the diagnosis?

peri-implant mucositis

your implant patient presents with presence of peri-implant soft tissue signs of erythema, edema, BoP, suppuration. Upon probing 4mm pockets present. A radiograph exhibits bone loss around the implant. What is the diagnosis?

peri-implantitis

peri-implant mucositis is similar to _______ minus the gingival attachment to root cementum

gingivitis

peri-implantitis is similar to _______ minus the gingival attachment to root cementum

periodontitis

the two most common dental infections of mankind are:

dental carries
periodontal disease

function: promotes the adhesion of the bacterial cell to living (epithelial) and inert surfaces (non-shedding surfaces such as a natural tooth

bacterial glycocalyx

glycocalyx-enclosed populations:

biofilm

A stabilized community of microorganisms that develop an equilibrium with the environment and with other microorganisms within the community, will return shortly after treatment:

climax community

Saliva and gingival crevice fluid:

bulk fluid

3 components for bacterial colonization:

surface for attachment
the present community
A flow of bulk fluid

what is the primary bulk fluid?

saliva

what is the secondary bulk fluid?

gingival crest fluid

•extravascular, serum-like fluid secreted from the underlying connective tissue through the epithelium into sulcular spaces.
It is part of the body's defense mechanism, transports inflammatory mediators

gingival crest fluid

which bulk fluid is present in a greater volume during infection/ inflammation?

gingival crest fluid

t/f: gingival crest fluid is decreased with smoking

false

t/f: gingival crest fluid is increased by sex hormones

true

t/f: mouthwash will outcompete gingival crest fluid in the gingival sulcus

false

Growth or motility moving an organism from one habitat to another within the mouth:

active movement

Spread within the oral cavity by the saliva and GCF and from subject to subject in saliva:

passive movement

which type of movement/ spread of microorganisms can be passed from parent to child and from spouse to spouse?

passive movement

site (location) at which a population or community grows, reproduces or survives?

habitat

what type of intraoral surfaces allow the development of complex biofilms?

non-shedding

The function of an organism in a habitat

niche

The first to colonize. Their “niche” is to alter the habitat to allow for the colonization of other species of organisms. Often, they are replaced

pioneer organisms

when staining bacteria, colonies that will cause oral diseases will stain:

gram negative

when staining bacteria, colonies that are a healthy part of the oral flora will stain:

gram positive

which of the following bacteria is NOT associated with periodontal disease?

P. gingivalis

C. gingivalis

T. forsythia

T. denticola

C. gingivalis

what bacteria is known to cause aggressive periodontitis with early onset bone loss?

Aggregatibacter actinomycetemcomitans

when a non-virulent bacterial cell can become virulent by a change in gene expression due to the quantity of specific bacteria

quorum sensing

Centers of dispersal from which species of bacteria have spread or are spreading, conditions are favorable for an increase in density of the species leading to quorum sensing

reservoir site