Anterior Composite Build Up

Question 1

Describe incisal build up of upper incisors when a patient presents with their entire tooth intact

Answer 1

• Create putty mould of teeth present to incisal edge and over palate
• Remove incisal angle (etch and bond)
• Reposition putty mould and add flowable composite to replace palatal surface
• Use plumbers tap interproximally and putty mould removed
• Build up dentine with mamellons and place Trans30 at incisal tip
• Enamel shade placed and polish

Question 2

What is the major difference between incisal build ups when a patient presents with a fractured tooth and an intact tooth?

Answer 2

Putty cannot be used for fractured teeth, and the process is carried out freehand instead of using flowable composite to build up a palatal wall

Question 3

Name 2 types of CeramX

Answer 3

1. CeramX Duo - Enamel and Dentine Shades

2. CeramX Universal - 5 shades

Question 4

Describe CeramX

Answer 4

• Nano hybrid composite, with high filler load for increased mechanical strength
• Maximum filler load achieved by Sphere Tec Fillers

Question 5

What is Sphere Tec Fillers?

Answer 5

Combining particles of different sizes which are spherical

Question 6

Describe 3 step process for producing Sphere Tec Fillers

Answer 6

1. Small droplets of barium-glass particles produced
2. Dictated by surface tension, droplets form spherical shapes and solvent evaporated
3. Travelling through hot processing zones cures and completes resin, so that solid Sphere Tec fillers are collected

Question 7

Describe 5 properties of CeramX

Answer 7

1. Thixotropic
2. Doesn’t stick to instruments
3. High speed and gloss development
4. Good flexural strength
5. High wear resistence

Question 8

Describe Thixotropic properties

Answer 8

• Show low viscous state under force and return to previous more viscous state after stress has been removed

Question 9

Describe thixotropic properties with regards to CeramX

Answer 9

Easily removed from compules tip and adapted to cavity walls, but also show stiff, slump-resistant consistency which supports creation of anatomic form

Question 10

Name 2 ways to select shades of CeramX Duo

Answer 10

1. Vita Shade Guide

2. CeramX Duo Shade Guide

Question 11

Why do layered composites give better appearance?

Answer 11

Enamel and dentine have very different optical properties and it is impossible for one material to replicate all of them

Question 12

What is opalesence?

Answer 12

Ability of natural teeth to change colour under different light sources

Question 13

Describe how enamel looks under reflected light

Answer 13

Exhibits a blueish tinge

Question 14

Describe how enamel looks under transmitted light

Answer 14

Exhibits and amber colour

Question 15

Describe 3 variations of teeth as age increases

Answer 15

1. Surface becomes smoother
2. Enamel becomes thinner
3. Dentine has more chroma

Question 16

Describe 3 important questions to ask when selecting the colour

Answer 16

1. What is the main shade?
2. Does it vary on different parts of the tooth
3. Are any particular features present (incisal wear, fluorosis)

Question 17

Name 3 properties of colour

Answer 17

1. Hue
2. Value
3. Chroma

Question 18

What is hue?

Answer 18

Shade of colour - Reddish, yellowish, orangeish

Question 19

What is value?

Answer 19

Lightness or darkness of a colour based on how close it is to white

Question 20

What is chroma?

Answer 20

• Purity of a colour

- High chroma colours looks rich and full and low chroma look dull and greyish

Question 21

What is the most important optical perametre?

Answer 21

Value

Question 22

Describe 3 good processes for taking a shade

Answer 22

1. Use natural light if possible
2. Guide patient but let them have final say
3. Note the shade selected in patients notes and get patients to initial (especially if your advice differs from selection)