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Operative Dentistry > Exam 2: Designs for Class I lesions > Flashcards

Exam 2: Designs for Class I lesions Flashcards

1
Q

What is the most cost effective class I restoration?

A

amalgam

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2
Q

What are the three most conservative class I restoration materials?

A

Sealant, PRR, and Composite

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3
Q

KEY concept: Factors that affect our treatment recommendations.. ______ on the tooth from heavy occlusion, grinding, and wear.

A

Stress

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4
Q

KEY concept: Factors that affect our treatment recommendations..Aesthetics-the _______ are teeth that aren’t really aesthetically crucial.

A

Molars!

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5
Q

KEY concept: Factors that affect our treatment recommendations.. Pt’s out of pocket ________

A

expenses

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6
Q

KEY concept: Factors that affect our treatment recommendations.. _____ of the lesion, the smaller the more conservative we can be.

A

size

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7
Q

KEY concept: Factors that affect our treatment recommendations.. the Pt’s ________, if you treat the lesion, what to keep it from occurring more often?

A

CAMBRA!

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8
Q

KEY concept: Factors that affect our treatment recommendations..Amount of sound ______ remaining.

A

enamel

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9
Q

KEY concept: Factors that affect our treatment recommendations..ability to ______ the tooth, like in our class V’s.

A

isolate

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10
Q

Before we can diagnose our pit and groove pattern, we need to _____ the tooth thoroughly!!!

A

DRY! white spot lesions!!

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11
Q

What are the 3 places a Class I restoration can occur?

A
  1. occlusal surfaces of posterior teeth 2.Pits in the occlsusal 2/3 of facial and lingual surfaces of molars 3.Lingual Pits of maxillary incisors of top 2/3 of tooth
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12
Q

What are the two structures that bore most of the load from occlusion?

A

triangular ridges and marginal ridges

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13
Q

What is the narrowest part of a preparation in the F/L direction? PLEASE don’t get this wrong..

A

isthmus

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14
Q

We PRE-ARTICULATE to avoid having the cave-surface margin at the opposing ______ point.

A

CONTACT

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15
Q

The outline of the proximal prep should be ______ to the maringal ridge!

A

PARALLEL

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16
Q

KEEP THE MARGINAL RIDGE as ______ as POSSIBLE.

A

THICK

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17
Q

Do not cut across the the ________ ridge of lower first premolars.

A

transverse

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18
Q

Do not cut across the _______ ridge of upper permanent molars.

A

oblique

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19
Q

For AMALGAM prep guidelines: Need a minimum of ____ mm depth starting from the central groove of your amalgam carving.

A

1.5 mm

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20
Q

On our amalgam prep: The Facial and Lingual walls at the cavo-surface may be deeper closer to ___mm.

A

2mm

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21
Q

Amalgam prep: The pulpal floor is parallel to a plane between the ______ and ______ cusps…essentially it follows the ____.

A

facial and lingual cusps….DEJ

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22
Q

Which tooth has the unique pulpal floor angle?

A

mandibular 1st premolar

23
Q

Amalgam: The isthmus should be MINIMALLY ___mm in width. And should be _____ on the tooth!

A

1mm…centered

24
Q

Amalgam: If you are over-converged on your prep you will likely have _______ enamel.

A

unsupported

25
Q

A _______ isthmus allows for greater convergence! This is due to the orientation of the _______.

A

SMALLER…enamel rods

26
Q

Amalgam: the M and D walls are _______ or slightly _______. WE NEED ________ enamel on the marginal ridge!

A

straight or slightly divergent….supported

27
Q

Amalgam: the thinner the marginal ridge ends up being, the more _______ your prep will need to be.

A

divergent (because of the diverging enamel rods!

28
Q

Individual Preps-max premolars–The outline follows the general direction of the _______.

A

central groove

29
Q

Individual Preps-max premolars– The Mesial & distal pits are ________.

A

symmetrical

30
Q

Individual Preps-max premolars–The mesial and distal marginal ridges are _______ to the dovetails.

A

parallel

31
Q

Individual Preps-max premolars–The pulpal floor is _____ as the Facial and Lingual cusps are similar in height

A

level

32
Q

The first premolar has a strong mesial _______ and therefore the mesial wall may need to be slightly more _______.

A

CONCAVITY…DIVERGENT

33
Q

Individual Preparations – Maxillary Molars: Do not cut through the ______ ridge…Form ______ mesial and distal preparations

A

oblique….separate

34
Q

Individual Preparations – Maxillary Molars: The walls adjacent to the oblique ridge are _____ to
the oblique ridge.

A

parallel

35
Q

Individual Preparations – Maxillary Molars: ONLY for first molars, a separate preparation along the groove forming the _______ is done if carious.

A

Cusp of Carabelli

36
Q

Individual Preparations – Maxillary Molars: The outline follows the general direction of the _______ groove.

A

central

37
Q

Individual Preparations – Maxillary Molars OL: Occlusal outline is parallel to the _______ ridge

A

oblique

38
Q

Individual Preparations – Maxillary Molars OL: Axial-pulpal line angle is ________. With the lingual/gingival floor a ____ design.

A

beveled…box

39
Q

individualr preps Maxillary Incisiors: The walls are cut ________ to the surface of the tooth…Avoid cutting through the _______ or ________.

A

perpendicular…cingulum or marginal ridges

40
Q

BE AWARE of DENS INVAGINATUS in this tooth: _______!!

A

Maxillary Lateral Incisor

41
Q

Individual Preparations – Mandibular molars-The center of the preparation is slightly ______ to the central groove of the tooth

A

facial

42
Q

Individual Preparations – Mandibular molars- Small outline extensions are made into deep secondary grooves especially the _____ groove on the lower first molar

A

DISTAL

43
Q

For mandibular molar buccal pits- make the walls _______ to retain amalgam and prep it centered on the buccal ______. The minimum depth is to the ____.

A

converging….groove..DEJ

44
Q

Greater morphological variance occurs in the pit and groove pattern in this tooth: _______. It has 3 types of outlines ___, ____, or _____.

A

mand second PM…U, Y, or H

45
Q

In the mand first pm, the pulpal floor is inclined _______ since the lingual cusp is significantly smaller.

A

lingually

46
Q

Composte Preps! The composite is made of glue: ______ and filler ______.

A

BIS-Gma….ceramic

47
Q

Composte Preps! Preps can be ______ due to the bonding principles of composites. The composite is held in by _________ bonding to enamel and dentin.

A

minimal….micro-mechanical

48
Q

Composte Preps! Not evidence based, but Only in areas of opposing contact is there a minimum depth requirement of ____ mm*

A

1.5 mm

49
Q

Composte Preps! Do we bevel the cavo-surface? What must be exposed?

A

no bevel, enamel rods are exposed

50
Q

Composte Preps! Class I composite restorations not in direct occlusal ______ may have an external cavo- surface BEVEL of __mm

A

CONTACT..1mm

51
Q

Composte Preps! Guess What!? Proximal walls do not require ________! A small amount of ________ enamel is acceptable.

A

divergence!… undermined

52
Q

Composte Preps! What are the 6 burs we’re gonna use for our preps??

A

1.#34D 2.#245C 3.#330C 4.#1/2Round 5.#330D 6.#132FD

53
Q

Composte Preps! The ______ you develop here will carry over to your practice. BOOM.

A

HABITS

54
Q

Class I amalgam prep on #30, make sure your isthmus is the minimum ___mm and the pulpal floor is at least ___mm deep at the central groove.

A

1mm….1.5mm

Operative Dentistry (25 decks)

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