Lecture 4 (Histopathology of Dental Caries) Flashcards
What are the essential factors for caries to occur:
- host saliva
- individual factors
- microorganisms
- substrate for microorganism
- duration and frequency of exposure
is where microorganisms act on and form the biofilm.
fermentable substrate
given a certain amount of time, the biofilm stays on the tooth and will form ____.
Caries
Follow the inverted V-shape progression of the base is at the DEJ
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Pits and Fissure Caries
it becomes wider as it goes to the DEJ, and narrower at the enamel surface
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Pits and Fissure Caries
may appear as a line on the tooth’s surface
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Pits and Fissure Caries
when drilled, there is a big area of infected dentin
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Pits and Fissure Caries
when the carious groove is opened, it becomes wider
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Pits and Fissure Caries
V-shaped
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Smooth Surface Caries
apex is at the DEJ
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Smooth Surface Caries
wider at the enamel surface and narrower at the DEJ
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Smooth Surface Caries
seen in Class V caries on the labial surface
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Smooth Surface Caries
may appear as a wide area
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Smooth Surface Caries
when drilled, there is not much destruction
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Smooth Surface Caries
U-shaped
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Root Caries
base is on the surface of the root
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Root Caries
be mindful of these caries because the cementum is soft
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Root Caries
progression is fast, especially if biofilm is not disturbed
- Pits and Fissure Caries
- Smooth Surface Caries
- Root Caries
Root Caries
a lesion is considered to be progressive
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
Active caries lesion
What are the characteristics of Active caries lesion:
- rough surfaces
- biofilm covers the surfaces or plaque accumulation
- small cavities starting
a lesion that may have formed years previously and then further progression stopped
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Inactive or arrested caries lesion
happens to areas where biofilm was disturbed or not anymore accumulated in that certain area
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Inactive or arrested caries lesion
happen to areas where hygiene was improved
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Inactive or arrested caries lesion
It is seen in remineralized and chronic lesions
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Inactive or arrested caries lesion
What are the characteristics of Inactive or arrested caries lesion:
- smooth surfaces
- clean
if a lesion is not active, action is needed to prevent further progression
TRUE OR FALSE
FALSE
if a lesion is not active, no action is needed to prevent further progression
first sign of a caries lesion on enamel
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Incipient Lesion
Reversible
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Incipient Lesion
Also known as early lesion and white spots lesion
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Incipient Lesion
What are the characteristics of Incipient Lesion:
- Small
- no cavity; the explorer will not penetrate
- white spots; can be detected by the naked eye
Tooth is attacked by acids in plaque and saliva calcium phosphate dissolve from the enamel in the process of demineralization if the pH is low, in order to balance the acidity.
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Incipient Lesion
Fluoride, phosphate, and calcium re-enter the enamel in a process called remineralization if there is good pH.
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Incipient Lesion
demineralization and remineralization are occurring simultaneously
- Active Caries Lesion
- Inactive/ Arrested Caries Lesion
- Incepient Lesion
Incipient Lesion
demineralized tissue that has been left behind before a filling is placed
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
May be iatrogenic if the dentist fails to see the infected dentin
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
have no history of pain in the tooth
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
happens when the caries is too deep (pink spot is seen) and the patient is not ready for root canal.
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
the dentist leaves a 1mm layer of infected dentin in hopes that the tooth will recover and develop a tertiary dentin barrier after placement of the calcium hydroxide, covering the tooth.
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
the dentist leaves a ____ layer of infected dentin in hopes that the tooth will recover and develop a tertiary dentin barrier after placement of the calcium hydroxide, covering the tooth
1mm
this method is a risky way to save a tooth
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
this method is a trend at present
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
the dentist must try to really save the tooth before root canal treatment
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
once the tooth is endodontically treated, the patient must go through various radical procedures
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Residual Caries
used to differentiate lesions on unrestored surfaces from those that develop adjacent to the filling
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Primary Caries
also known as recurrent caries
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Secondary Caries
caries around the filling
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Secondary Caries
caused by failure to floss
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Secondary Caries
described lesion in dentin that are missed on a visual examination
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Hidden Caries
large enough to be detected radiographically
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Hidden Caries
only recognized by the patient when there is pain already
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Hidden Caries
usually on proximal areas
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Hidden Caries
sound on the occlusal because caries usually starts on contact areas
- Residual Caries
- Primary Caries
- Secondary Caries
- Hidden Caries
Hidden Caries
1 surface
Simple cavity
2 surfaces
Compound cavity
3 or more surfaces
Complex cavity
multiple active carious lesions occurring on the same patient
Acute/Rampant Caries
frequently involve surfaces of teeth that do not usually experience dental caries
ex: labial area
Acute/Rampant Caries
caries on primary teeth are usually caused by milk
Young patients
known as bottle or nursing caries
Young patients
baby caries, or early childhood caries
Young patients
The sugar on the feeding bottle stays on the mouth for a long time
Young patients
usually on the anterior teeth
Young patients
caused by radiation or drug induced
symptoms:pain
Adult patients
symptoms: mild pain or no pain at all
Chronic Caries
symptoms: no pain, but has discoloration (dark brown or black) and is smooth
Arrested Caries
pits and fissure cavities on occlusal surfaces of molars and premolars
CLASS I
Buccal pits of molars
CLASS I
lingualpitsofmaxillaryincisors
CLASS I
Cavities on proximal surfaces of premolars and molars
CLASS II
Cavities on proximal surfaces of anterior teeth without involving incisal angle
CLASS III
cavities on proximal surfaces of anterior teeth involving the incisal angle
CLASS IV
cavities of the gingival third on buccal, labial, and lingual surfaces of all teeth
CLASS V
incisal edges of incisors
CLASS VI
cusp tips of canines, molars, and premolars
CLASS VI
sound tooth
Score 0
white or brown spot or opacity visible only after air-drying
Score 1
white or brown spot oropacity visible even without air-drying
Score 2
not only a faint white spot, it is very visible
Score 2
surface integrity loss - starts to open
Score 3
underlying grey shadow
Score 4
expect that the caries is going to the dentin already
Score 4
more demineralized areas
Score 4
distinct cavity
Score 5
less than half of the tooth
Score 5
Extensive cavity
Score 6
reaches half or more than half of the tooth
Score 6