Case 5 - Class 2 (2): Mild crowding, deep bite. Fixed Appliance Plan: Non-extraction or extract upper first premolars + flat anterior bite plane

In this video I'll walk you through a typical class 2 (2) case with a deep bite so you can see the mechanics I use to correct the overbite. I'll show you two plans as this case is borderline in terms of the need for extractions, so you'll see how I'd change things if it became clear that extractions would be needed. You can find t brief summary below and the full details in the video.

CASE SUMMARY

Diagnosis / Problems List

Skeletal C2, reduced vertical + FMPA
Incisor C2(2)
Mild crowding
Increased overbite
Centerline discrepancy (1mm)
Buccal segments ½ C2
Retroclined incisors
Increased COS

Mechanics + Appliances

Upper and lower fixed appliances
Class 2 incisor mechanics
Deep overbite mechanics
Class 2 canine + molar mechanics

Treatment Plan Summary - Plan 1

Flat anterior bite plane (FABP)
Upper and lower fixed appliance
Re-assess for lower interproximal reduction (IPR) / extraction (XLA) - very unlikely
Retain

Treatment Plan Summary - Plan 2

Flat anterior bite plane (FABP)
Extract upper first premolars
Upper and lower fixed appliance
Re-assess for lower interproximal reduction (IPR) / extraction (XLA) - very unlikely
Retain

Archwire Sequence - Plan 1

FABP
014N / 014N
18x25N /18x25N
- Powerchain U2-2
18x25S /19x25S
- Powerchain U+L 6-6
- C2 elastics
- Anterior cross elastic if required
018S / 018S
- Powerchain U+L 6-6
- Zigzag settling elastics
- Anterior cross elastic if required
Debond + Retain

Archwire Sequence - Plan 2

FABP
XLA U4s
014N / 014N
18x25N /18x25N
- Powerchain U2-2
19x25S /19x25S
- Powerchain U6s-3s, U2-2, L3-3
- C2 elastics
- Anterior cross elastic if required
19x25S /19x25S
- Powerchain U+L 6-6
- C2 elastics
- Anterior cross elastic if required
018S / 018S
- Powerchain U+L 6-6
- Zigzag settling elastics
- Anterior cross elastic if required
Debond + Retain

Dr Ib Rominiyi | Orthodontic Specialist & Mentor

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