Truly Invisible Braces:
The Story of Serial Disking

Objectives

Part 1 - Transition From Primary to Permanent Teeth

Flush Terminal Plane

Mesial Step

Disto Step

Mesio Step

Incisor Liability

Overcoming Incisor Liability

Arch Length Prediction from Alignment of Primary Teeth

Good Spacing

No Primary Spacing

Fair Spacing

Leeway Space

“E” Space

Late Mesial Shift

Late Mesial Shift (cont.)

Late Mesial Shift (cont.)

Part 2 Mixed Dentition Analysis

4 Step Simplified MDA

Step 1 MDA Methodology

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Step 1 Example

Step 2 MDA Methodology

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Step 3  MDA Methodology

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Step 3  Example

Step 4 MDA Methodology

MDA Methodology

Step 4  Example

Allowance for Late Mesial Shift

MDA Procedure Maxillary Arch

Part 3  Serial Disking

What Happens With No Intervention?

Cuspid Labial Eruption
No anterior alignment

1st Premolar Eruption
Distal cuspid movement?

2nd Premolar Eruption
Late mesial shift of 1st molar

2nd Premolar Eruption
Late mesial shift of 1st molar

Result Without Disking

Ideal Patient for Serial Disking

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Serial Disking Technique

Serial Disking Steps:
Mandibular Arch

Mild Anterior Crowding
Disk Primary Cuspids

Mild Anterior Crowding
Disk Primary Cuspids

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Cuspid Eruption
Extract 1st Primary Molar?

Cuspid Eruption
Extract 1st Primary Molar?

1st Premolar Eruption
Disk 2nd Primary Molar

1st Premolar Eruption
Disk 2nd Primary Molar

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Disk 2nd Primary Molar

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Class I Molars Preferred
No late mesial shift required

2nd Premolar Eruption

End to End Molars
No late mesial shift

If You Can’t Disk Enough…
and <5 mm. Crowding...

Other Factors to Consider

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