dental composite

Question 1

What does advanced use of resin based composites include?

Answer 1

Polychromatic
Altering morphology
Occlusal rehab
Repair failed
Tooth splinting
Temp bridges

Question 2

What are the ideal properties of RBCs?

Answer 2

Perfect colour match
High polish ability
Durable finish
Low shrinkage
Good radiopacity
Bonding agents compatibility
Handling characteristic range we

Question 3

How are RBCs selected?

Answer 3

Shades and opacity
Filler composition
Physical properties
Handling characteristics
Cost

Question 4

How are RBCs classified?

Answer 4

Microfilled- amorphous silica (35-63%)- 0.04μm- eg. Heliomolar (Vivadent)

Micro-hybrid- glass particles and microfillers (>80%)- 0.4-0.8μm- eg. EsthetX (Dentsply)

Continuum filled- Zr/Si (87%)- 0.01-3.5μm- eg. Z100 and Z250 (3M ESPE)

Nanofilled- Zr/Si and clusters- 5-20nm Zr/Si or 75nm Si- eg. Filtek supreme XT (3M ESPE)

Question 5

How are RBCs selected by complexity?

Answer 5

1. Universal everyday
2. Dual opacity
3. Polychromatic layered
3. Tints, opaquers, intensives and opalescents

Question 6

What is a universal every day composite?

Answer 6

For small cavities
Limited shades
Sub micron hybrids
Eg. Spectrum TPH (Dentsply), Prodigy (Kerr), Z100 (3M ESPE) etc

Question 7

What is a dual opacity composite?

Answer 7

Range of dentine and enamel in ‘vita classic’ shades
Low cost
Excellent cosmetic results
Eg. Ceram.X Duo (Dentsply), Venus (Heraeus Kulzer)

Question 8

What are polychromatic layered composites?

Answer 8

Complex and costly
Intensive and translucent shades
Training required for best results
Special instruments for placement

Eg. EsthetX (Dentsply), Premise and Herculite (Kerr), Filtek supreme XT (3M ESPE)

Question 9

What is Filtek Supreme (3M ESPE)?

Answer 9

Mechanical properties of hybrid
Polish ability similar to microfills
Good retention of surface finish
Excellent handling characteristics
V high wear resistance

Question 10

What are the Filtek supreme shades?

Answer 10

4 opacities in 34 vita based shades
Dentine, body, enamel and incisal

D>B>E>I in terms of opacity

Question 11

What is the technique for anterior layered build?

Answer 11

1. Diagnosis- cosmetic trial +/ imaging
2. Preop wax up/index
3. Shade and characterisation assessment
4. Tooth prep
5. Index build palatal, proximal, and incisal enamel
6. Multiple dentine shades and intensives
7. Labial enamel, contour and polish
8. Possible revision at review

Question 12

What are different finishing systems?

Answer 12

1. Fine diamonds and TC finishing burs
2. Polishing discs
3. Smoothing and high gloss
4. Fast gloss polishing

Eg. Finishing but kit (Schottlander), SofLex (3M ESPE), enhance kit (Dentsply), occlusobrush (Kerr)

Question 13

What is the technique for composite to composite repair?

Answer 13

Bond strength dependent on adhesive and structure of aged composite
Eg. Prime and Bond NT (Dentsply), Optibond Solo (Kerr)
Clinical studies lacking on longevity