M
MaxExpand
Maxillary Expansion Decision Support
v2.1
ⓘRule-based clinical decision support. Level 2 (CBCT) is optional — Level 1 gives valid recommendations without imaging. This tool never encourages unnecessary CBCT or MARPE.
1

Clinical Parameters

Level 2 CBCT fields are optional

● Level 1 — Clinical (no CBCT required)
Patient
Age (years)
Sex
Growth status (CVM)
Dentition & Anchor Teeth
Dentition stage
Primary molar condition
Transverse Deficiency
Arch width discrepancy

Distobuccal cusp lower 6 → central groove upper 6 (bilateral mean)

Posterior crossbite
WALA-ridge discrepancy (mm)

Andrews & Andrews WALA-Ridge: inter-jugale (maxilla) − inter-WALA (mandible). Negative = narrow maxilla · Positive = wide mandible (pseudo-constriction — expansion does not address the cause) · ≈0 with crossbite = dental compensation.

Clinical Requirements
Skeletal expansion need
Dental expansion need
Periodontal Assessment
Biotype
BOP positive
Recession (buccal upper 6)
Attached gingiva (apico-coronal)
Composite perio risk: Low (1 pts) — drives modality scoring transparently in the Evidence-Trace.
Patient Preferences
Accepts TADs
Accepts surgery
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Evidence-Based Rankings

All 7 approaches scored 0–100 — click any card for full breakdown + retention protocol

⊕

Enter clinical data and click Rank All Approaches

Evidence Base

Literature informing this tool — expand for details