Temporary Crown Material Calculator

Bis-acryl or PMMA quantity from preparation dimensions.

Inputs

Preparation height (mm)

Preparation diameter (mm)

Number of units

Material type (1-3)

Tab to move between fields

Results

Total material volume (mL)

0.47

Volume per unit (mL)0.47

Working time (seconds)90

Setting time (minutes)3.5

Material cost ($)$1.53

Provisional life (weeks)8

Cartridges Needed1

Cartridges Actual1

Flexural Strength85

How to Use This Calculator

Enter Preparation height (mm), Preparation diameter (mm), and Number of units.
Set Material type (1-3).
Review the Total material volume (mL) result.
Use Volume per unit (mL) and Working time (seconds) to inform your decision.

How the result changes with Preparation diameter (mm)

Preparation diameter (mm)	Total material volume (mL)
6	0.25
8.5	0.38
12	0.59
14	0.73

What each input means

Preparation height (mm): Height of the crown preparation.
Preparation diameter (mm): Average diameter of the preparation.
Number of units: Total number of provisional crowns needed.
Material type (1-3): 1 = bis-acryl, 2 = PMMA acrylic, 3 = bis-GMA composite.

What each result means

Total material volume (mL): Total provisional material needed.
Volume per unit (mL): Material volume per individual crown.
Working time (seconds): Available working time before material sets.
Setting time (minutes): Time to initial set.
Material cost ($): Estimated material cost including waste.
Provisional life (weeks): Expected service life of the provisional.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Preparation height (mm) = 7, Preparation diameter (mm) = 10, Number of units = 1, Material type (1-3) = 1 = 4 input(s) provided
Calculate Total material volume
Total material volume
0.47 = 0.47
Calculate Volume per unit
Volume per unit
0.47 = 0.47
Calculate Working time
Working time
90 = 90

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