Application of Dental Materials Flashcards

1
Q

BIOCOMPATIBILITY

WORKS BOTH WAYS-

A

MATERIAL MAY
AFFECT THE ENVIROMENT AND/OR
THE ENVIROMENT MAY AFFECT THE
MATERIAL.

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2
Q

BIOCOMPATIBILITY
THE MATERIAL MUST BE OF BENEFIT
TO THE PATIENT AND ABOVE
ALL,THE PATIENT MUST

A

BE SAFE

FROM ANY ADVERSE REACTIONS.

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3
Q

THE BIOLOGICAL REACTION CAN TAKE PLACE

EITHER AT A

A

LOCAL LEVEL ( injection site) OR
FAR REMOVED FROM THE SITE OF CONTACT (i.e.,
systemically-adverse Rx from acrylic monomer
in a denture- (denture stomatitis).

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4
Q

BIOCOMPATIBILITY

SYSTEMICALLY MAY NOT ALWAYS BE

A

READILY
APPARENT-DERMATOLOGICAL,IMMUNE-
MEDIATED,OR NEURAL REACTIONS.

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5
Q

BIOCOMPATIBILITY

MOST COMMON Rx to DENTAL STAFF IS- (2)

A

hand/facial dermatitis or respiratory symptoms.

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6
Q

POSSIBLE INTERACTIONS BETWEEN DENTAL
RESTORATIVE MATERIAL AND THE BIOLOGICAL
ENVIROMENT INCLUDE: (4)

A

 1. POSTOPERATIVE SENSITIVITY
 2. TOXICITY-Nanomaterials(size of 1-00nm)
growing concern about their Biosecurity &
crossing the blood-brain barrier and going to the
Central Nervous System.
 3. CORROSION
 4. HYPERSENSITIVITY/ALLERGY-Amalgam
or its components may cause Type IV ( usually
24-48 hours after exposure) on the oral mucosa

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7
Q

Contact allergies
to dental
materials: (4)

A

 86 subjects-83.7% women
 Average age 63 years (24-86)
 Most common allergies were to metals, of which
nickel and cobalt were the most common
allergens.
 Denture resins showed mucosal changes,
contact stomatitis(54.4%) & burning sensations
of the mouth were mostly reported.

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8
Q

SOME PATIENTS CAN DEVELOP (2)

A

ALLERGIC OR
HYPERSENSITIVE REACTIONS TO EVEN VERY
SMALL QUANTITES OF METAL

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9
Q

SOME PATIENTS CAN DEVELOP ALLERGIC OR
HYPERSENSITIVE REACTIONS TO EVEN VERY
SMALL QUANTITES OF METAL SUCH AS : (4)

A

 MERCURY
 OOL
 NICKEL
 COBALT

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10
Q

 MERCURY-

A

direct contact of oral mucosa with
this material can cause oral lichenoid
lesions(OLL)*.

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11
Q

 OOL-

A

chronic inflammatory lesion on the oral
mucosa. Dental materials, certain medications,
patients with systemic diseases, chronic
hepatitis.

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12
Q

 NICKEL-

A

ask patient if they can wear costume

jewelry.

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13
Q

skipped

 COBALT-

A

2017 UK-metal-on-metal hip implant
failure. Complications after revision due to
cobalt and chromium toxicity.

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14
Q

MUCOSAL MELANOMA OF THE ORAL CAVITY IS A RARE. BUT IS

A

A HIGHLY AGGRESSIVE NEOPLASM-NEED TO KNOW THE MORE

FREQUENT Dx’s.

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15
Q

— is one of the most common causes of
allergic contact dermatitis and produces more
allergic reactions than all other metals
combined.

A

Nickel

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16
Q

Several brands of orthodontic wires are made

of

A

nickel titanium alloy

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17
Q

Non-precious metal crowns contain high levels

of nickel. Some as high as —%

A

55

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18
Q

DENTAL PRACTIONERS ARE ULTIMATELY

RESPONSIBLE FOR THE

A

MATERIALS TO WHICH A

PATIENT WILL BE EXPOSED.

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19
Q

SARGENTI PASTE FOR ROOT CANALS-

A

paraformaldehyde

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20
Q

 YOU MUST HAVE A KNOWLEDGE AND
UNDERSTANDING OF THE COMPOSITION OF THE
MATERIALS TO BE USED AND HOW THESE MIGHT
AFFECT THE PATIENT. (2)

A

 SAFEST & MOST EFFECTIVE
 PLEASE READ AND UNDERSTAND ALL INSERTS
THAT COME WITH MATERIALS

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21
Q
MATERIALS CAN CAUSE IRREVERSIBLE DAMAGE-CAUSING 
DESTRUCTION OF (5)
A

CONNECTIVE TISSUE,BONE,NERVES,CHRONIC

INFECTION & PAIN.

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22
Q

CONNECTIVE TISSUE,BONE,NERVES,CHRONIC
INFECTION & PAIN. MATERIAL CAN TRAVEL THROUGHOUT THE
BODY- (5)

A

BLOOD, LYMPH NODES,ADRENAL GLADS,KIDNEY,BRAIN

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23
Q

AOMT-

A

International Academy of Oral Medicine & Toxicology. www.IAOMT.org-states they are the LEADERS is Science-Based Biological Dentistry.

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24
Q

If you wish to remove mercury amalgams, fillings or metal-based crowns it is recommended to use an IAOMT dentist certified in the

A

Safe Mercury Amalgam Technique (SMART)

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25
Q

HAD-

A

Holistic Dental Association-Improving overall health through dentistry

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26
Q

SOME MATERIALS HAVE A DISTINCTLY POSTIVE

EFFECT ON THE

A

PULP

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27
Q

CALCIUM HYDROXIDE – stimulates

A

tertiary dentin formation

28
Q

SINCE A RESTORATION MAY HAVE AN ADVERSE
EFFECT ON THE PULP, A RANGE OF MATERIALS
TERMED INTERMEDIATE RESTORATIVE MATERIALS
(IRMs) HAVE BEEN DEVELOPED TO

A

BE APPLIED TO
THE DENTIN PRIOR TO THE PLACEMENT OF THE
FINAL RESTORATION.

29
Q

INTERMEDIATE
RESTORATIVE
MATERIALS

THESE MATERIALS INCLUDE CAVITY 
(3) AND ARE 
INTENDED TO REMAIN IN PLACE 
--- ,THESE MATERIALS SHOULD 
NOT BE CONFUSED WITH --- 
RESTORATIVE MATERIALS.
A

VARNISHES, BASES AND LINERS

PERMANENTLY
TEMPORARY

30
Q

INTERMEDIATE
RESTORATIVE
MATERIALS

THEIR ROLE MAY BE (3)

A

PROTECTIVE, PALLIATIVE

OR THERAPEUTIC

31
Q

INTERMEDIATE
RESTORATIVE
MATERIALS

GOAL IS TO PROTECT THE PULP FROM (3)

A

 CHEMICAL
 ELECTRICAL-Galvanic Shock-dissimilar metals
 THERMAL

32
Q

INTERMEDIATE
RESTORATIVE
MATERIALS

AN EXAMPLE IS-

A

zinc oxide-eugenol(ZOE)-
sedative like qualities on hypersensitive pulp
and is a good thermal insulator as well.

33
Q

INTERMEDIATE RESTORATIVE MATERIAL

acts as a

A

thermal insulator

34
Q

INTERMEDIATE RESTORATIVE MATERIAL

excellent

A

abrasion resistance

35
Q

INTERMEDIATE RESTORATIVE MATERIAL

good — properties

A

sealing

36
Q

INTERMEDIATE RESTORATIVE MATERIAL

low

A

solubility

37
Q

INTERMEDIATE RESTORATIVE MATERIAL

may be used under (2) so that (3)``

A
cements and restorative materials that do 
not contain resin components such as:
• amalgams
• inlays
• onlay
38
Q
INTERMEDIATAE 
RESTORATIVE 
MATERIAL-
things to 
consider: (4)
A
THE MATERIAL SHOULD NOT DISCOLOR THE 
TOOTH OR RESTORATION.
SHOULD HARDEN QUICK ENOUGH TO ALLOW 
SUBSEQUENT INSERTION OF THE RESTORATION.
SHOULD WITHSTAND THE CONDENSATION OF 
THE OVER LAYING RESTORATION
SHOULD BE EASILY MANIPULATED-WHAT WORKS 
FOR YOU.
39
Q

LINERS AND BASES ARE MATERIALS
PLACED BETWEEN DENTIN (and
sometimes pulp) AND THE
RESTORATION TO PROVIDE (2)

A

PULPAL

PROTECTION OR PULPAL RESPONSE.

40
Q

PROTECTIVE NEEDS FOR A

RESTORATION VARY DEPENDING ON (2)

A

THE EXTENT AND LOCATION OF THE
PREPARATION AND THE RESTORATIVE
MATERIAL TO BE USED.

41
Q

THE CHARACTERISTICS OF THE LINER
OR BASE SELECTED ARE DETERMINED
LARGELY BY THE

A

PURPOSE IT IS

EXPECTED TO SERVE.

42
Q

BECAUSE THEY SHARE SIMILAR
OBJECTIVES/PROPERTIES, LINERS AND
BASES ARE NOT FULLY

A

DISTINGUISHABLE IN ALL CASES, BUT

SOME GENERALIZATIONS CAN BE MADE.

43
Q

BASES-

A

thick mix of material which is placed in
bulk. Used as a dentin replacement to minimize
final restorative material.

44
Q

bases are used to

A

block out undercuts

45
Q

LINERS-

A

only applied as a thin coating over

exposed dentin.

46
Q

CAVITY
BASES vs
LINERS

Less than — thick and is able to promote the
health of the pulp by

A

0.5mm

adhesion or antibacterial
action

47
Q

LINERS: Primary role is to

A

protect

the pulp

48
Q

lines

Forms a

A

strong bond to dentin, preventing fluid movement down the dentinal tubules

49
Q

liners

Provides a

A

bacterial barrier.

50
Q

liners

Sustained — release

A

fluoride

51
Q

VITREBOND-

A

light Cure Resin-modified Glass Ionomer. Liner/Base. Can be used under composite, amalgam, metal and ceramic restorations IT IS NOT INDICATED FOR DIRECT PULP CAPPING

52
Q

CALCIUM HYDROXIDE- Ca(OH)2-

A

highly alkaline

with a pH of 11-12.5

53
Q

liners

Bactericidal activity-

A

retains its anti-bacterial

properties for about 2 months.

54
Q

liners

Formation of – dentin.

A

tertiary

55
Q

liners

used for

A

direct and indirect pulp capping

56
Q

DYCAL-

A

Calcium Hydroxide Liner.

CAN BE SELF CURING OR LIGHT CURED

57
Q

VARNISHES-

A

A natural gum (Copal),rosin, or synthetic resin

dissolved in organic solvent.

58
Q

VARNISHES-
Has some (2)
properties.

A

antimicrobial and antiviral

59
Q

VARNISHES-

Easily seeps into

A

open dental tubules and

60
Q

VARNISHES-

Prevents

A

transfer of heat and cold to the

dentin and pulp

61
Q

VARNISHES-
We use — instead of varnishes at the
SOD.

A

vitrebond

62
Q

VARNISHES

Not to be used under (2)

A
composite restorations 
(interferes with the setting reaction)

Glass Ionomer’s
(interferes/prevents fluoride release).

63
Q

COPALITE-

A

Used as an insulating layer under gold

and amalgam restorations.

64
Q

SHALLOW TOOTH PREP-

A

place nothing,

vitrebond, or varnish.

65
Q

MODERATE DEPTH-

A

liners may be
placed for thermal protection and
pulpal medication along with varnish

66
Q

VERY DEEP-

A

liner may be Calcium
Hydroxide, then the base Vitrebond
OR IRM.