L5 Amalgam Class I

Front 1

Class I's: Pathogenesis
1. ___ + ____+ _____
2. Acid -> ________
3. Remineralization to Demineralization ratio of _____
4. Introduction to ____ = irreversible process

Back 1

Class I's: Pathogenesis
1. Bacteria+ Sugar+ Shelter
2. Acid -> Demineralization
3. Remineralization to Demineralization ratio of Enamel
4. Introduction to Dentin = irreversible process

Front 2

Class I's Diagnosis
Clinical Findings
1. Tactile observation using an ____, a "____"
2. Visual observation of a _____ under the enamel
3. Visual observation of _____ and ____ flaking area

Back 2

Class I's Diagnosis
Clinical Findings
1. Tactile observation using an explorer, a stick
2. Visual observation of a shadowing under the enamel
3. Visual observation of decalcification and tactilely flaking area

Front 3

Class I's Diagnosis
Radiographic findings:
1. Noticeable change in _____ denstiy at affected area. Possible a _____ shaped defect.
2. Darkened ___ area in the ____ areas adjacent to the enamel defects

Back 3

Class I's Diagnosis
Radiographic findings:
1. Noticeable change in enamel denstiy at affected area. Possible a triangular shaped defect.
2. Darkened ovoid area in the dentinal areas adjacent to the enamel defects

Front 4

Radiographic Limitations
- Radiographs only show us the _____ of the ongoing infection. They usually indicate a _____ situation than what actually appears clinically.
- Radiographs are a two dimensional picture of a three dimensional object. ____, _____, and ____ defects maybe superimposed or hidden by other defects.

Back 4

Radiographic Limitations
- Radiographs only show us the RESULT of the ongoing infection. They usually indicate a smaller situation than what actually appears clinically.
- Radiographs are a two dimensional picture of a three dimensional object. Buccal, Lingual, and Pit defects maybe superimposed or hidden by other defects.

Front 5

Definitive Diagnosis
- A definitive diagnosis of class I caries comes from a combination of the _____ ____ _____, ___ ___, and _____ _____.

Back 5

Definitive Diagnosis
-A definitive diagnosis of class I caries comes from a combination of the patient’s reported symptoms, clinical findings, and radiographic findings.

Front 6

Limitations and Advances
- _____ of ________ ____ limits our ability to detect class I decay with x rays

Back 6

Limitations and Advances
-Thickness of Radio-opaque Enamel limits our ability to detect Class I decay with xrays.

Front 7

Class I caries:Treatment
Restorative options
1. _______
2. _______ Inlay
3. _______ inlay
4. _______

Back 7

Class I caries:Treatment
Restorative options
1. Composite
2. Gold Inlay
3. Porcelain inlay
4. Amalgam

Front 8

Class I preparation design
The design of the class I amalgam preparation will vary depending on the _____ ______, extent of ____ or size of the existing _______.

Back 8

Class I preparation design
The design of the class I amalgam preparation will vary depending on the tooth morphology, extent of caries or size of the existing restorations.

Front 9

Class I Preparation Design
The criteria the preparation
1. ______
2. ______
3. ______
4. ______ ______ finish and ______, aka ______ finish and ______

Back 9

Class I Preparation Design
The criteria the preparation
1. Outline
2. Internal
3. Retention
4. Enamel Wall finish and Debridement, aka Cavosurface finish and debridement

Front 10

Outline for the class I amalgam preparation is determined by the following
1. ______
2. ______
3. ______ ______
4. ______ ______
5. ______ ______ on ______ ______ ______
6. ______

Back 10

The outline for the class I amalgam preparation is determined by the following:
1. Caries
2. Decalcification
3. Existing restorations
4. Fissured grooves
5. Terminating margins on smooth finishable enamel
6. Access

Front 11

“Minimal Outline Form”
•When creating a minimum outline form, it is generally accepted that you can include any defects that extend from the central ___/_____, half way to the ______ ____.
•Any defects past that require an ______ or ______.

Back 11

“Minimal Outline Form”
•When creating a minimum outline form, it is generally accepted that you can include any defects that extend from the central pit/groove, half way to the occlusal table.
•Any defects past that require an extension or modification.

Front 12

Circumscribing
•The outline must minimally circumscribe (by _____ or less) the caries, decalcification, fissured grooves, existing restorations, terminate on smooth tooth structure.
•That means that all _____ _____ and the _____ should be free of any defects! The pulpal floor can have defects contained by healthy tooth structure borders of _____ mm.

Back 12

Circumscribing
•The outline must minimally circumscribe (by 0.25mm or less) the caries, decalcification, fissured grooves, existing restorations, terminate on sound tooth structure.
•That means that all occlusal walls and the DEJ should be free of any defects! The pulpal floor can have defects contained by healthy tooth structure borders of 0.25 mm.

Front 13

Minimum Outline Width
•The minimum width is _____ mm so the smallest _____ will fit.

Back 13

Minimum Outline Width
•The minimum width is 1.0 mm so the smallest condenser will fit.

Front 14

Internal
1. you need a ___ mm tall occlusal wall to have ____ mm of amalgam cross sectional thickness.
2. due to normal anatomical variation, the wall heights will ___ from exactly ___ mm. * Note that the Central Groove ____- _____is Flat & Straight across.
3. shows that with steeper anatomy, you’ll have taller walls.

Back 14

Internal
a shows that you need a 2.0 mm tall occlusal wall to have 1.5 mm of amalgam cross sectional thickness.
b shows that due to normal anatomical variation, the wall heights will vary from exactly 2.0 mm. * Note that the Central Groove Mesio-Distally is Flat & Straight across.
c shows that with steeper anatomy, you’ll have taller walls.

Front 15

Internal: Handling Buccal and Lingual Grooves
•When extending from flat central groove area towards the _____ or _____ groove, the pulpal floor gradually ____ to create a _____ floor and slightly _____ occlusal wall to preserve tooth structure and strength. The steeper the cusp, the steeper you can slant the wall occlusally.

Back 15

Internal: Handling Buccal and Lingual Grooves
•When extending from flat central groove area towards the buccal or lingual groove, the pulpal floor gradually rises to create a slanted floor and slightly undercut occlusal wall to preserve tooth structure and strength. The steeper the cusp, the steeper you can slant the wall occlusally.

Front 16

Internal: Path of Insertion
•It is not exactly vertical due to the normal Long Axis Inclinations of Teeth and the Curve of ____.
- Always direct the bur _____ into the occlusal surface from the plane formed between the _____ and ____ cusps.

Back 16

Internal: Path of Insertion
•It is not exactly vertical due to the normal Long Axis Inclinations of Teeth and the Curve of Wilson.
- Always direct the bur perpendicularly into the occlusal surface from the plane formed between the buccal and lingual cusps.

Front 17

Retention
•Retention of Class I Amalgams is simply reliant on the ____-_____ relationship of the occlusal walls to be ____ or slightly ______.

Back 17

Retention
•Retention of Class I Amalgams is simply reliant on the buccal-lingual relationship of the occlusal walls to be parallel or slightly undercut.

Front 18

Enamel Wall Finish and Debridement
When preparing, you must consider the
1) _____ Strength
2) ______ Strength, &
3) _____ Support by _____ (____ ____ direction)

Back 18

Enamel Wall Finish and Debridement
When preparing, you must consider the 1) Tooth Strength, 2) Amalgam Strength, &
3) Enamel Support by Dentin

Front 19

Proper Mesial and Distal
Occlusal Wall Anglulation
-proper angulation to follow
____ _____ at the mesial and distal walls.

Back 19

Proper Mesial and Distal
Occlusal Wall Anglulation
-proper angulation to follow
enamel rods at the mesial and distal walls.

Front 20

Continuous, Sharp, & Finishable Enamel and Cleanliness
•Check that the preparation margin is easily observed all the way around the outline as a _____, _____ line.
•This allows a perfect place to end the restoration.
•No deeply fissured grooves in enamel should be left.
•Everything should be thoroughly cleaned!

Back 20

Continuous, Sharp, & Finishable Enamel and Cleanliness
•Check that the preparation margin is easily observed all the way around the outline as a sharp, continuous line.
•This allows a perfect place to end the restoration.
•No deeply fissured grooves in enamel should be left.
•Everything should be thoroughly cleaned!

Front 21

Problems with Enamel Wall Finish
•The outline (top of the preparation) is rounded. It is hard to find a suitable place to end the restoration (margin).
•The margin forms an ____angle with the occlusal surface.
•Again, these margins are too thin in cross-sectional thickness leaving the amalgam susceptible to fracture/chip where excellent seal is required.

Back 21

Problems with Enamel Wall Finish
•The outline (top of the preparation) is rounded. It is hard to find a suitable place to end the restoration (margin).
•The margin forms an acute angle with the occlusal surface.
•Again, these margins are too thin in cross-sectional thickness leaving the amalgam susceptible to fracture/chip where excellent seal is required.