Clinical Evaluator

Decision Support Tool

This tool is designed to guide the therapeutic strategy from the first consultation.

Patient Identification

Clinical Parameters

Protocol V.2025

1. Cervical Vertebral Maturation Stage (CVS) / Chronological Age

2. Maxillary Transverse Deficiency (MTD)

Precise measurement on models or Delaire analysis.

MTD Value: 0 mm

0mm2mm4mm6mm8mm

Chairside estimation (Simplified chart).

A. Posterior Crossbite (PCB) (Max 4 pts)

No Unilateral (2 pts) Bilateral (4 pts)

B. McNamara Index (Max 5 pts)

Age-adapted values = distance at cervical margin of MP cusps from 16 to 26

> 35 mm 32 - 35 mm < 32 mm

C. Morphology (Max 4 pts)

Buccal Corridors (Dark spaces) (+1) High/Deep Palate (+1) Reversed Curve of Wilson (+2)

Clinical Score: 0 Monitoring

3. Sagittal Skeletal Diagnosis

Magnitude of sagittal discrepancy at molar level

4. Ventilatory Assessment (SDB / OSAS)

Nasal Patency (Gudin / Rosenthal Tests)

OSAS / SDB Status

Salagnac Index (2019)

0/30

Facial Signs

Dolichofacial (x3)

Mandibular retrognathia or prognathia (x1)

Mesofacial (x1)

Reduced intercanthal distance (x1)

Functional Signs

OSAS / SDB (x1)

Mouth breathing (x1)

Nighttime snoring (x1)

Adenotonsillar hypertrophy (x1)

Nighttime sleep disturbances (x1)

Deviated nasal septum (x1)

Positive Gudin sign (x1)

Atypical swallowing (x1)

Incompetent lips (x1)

Facial muscle hypotonia (x1)

Intraoral Signs

Deep and narrow palatal vault (x2)

Narrow paramedian palatal mucosa (x1)

V- or Lyre-shaped maxillary arch (x1)

Palatal inclination of alveolar processes (x1)

Unilateral crossbite (x1)

Bilateral crossbite (>4mm) (x2)

Severe dental crowding (x1)

Radiological Signs

Narrow nasal cavity (x2)

Reduced septum/turbinate space (x1)

Upper intermolar distance < 1/2 bizygomatic distance (x1)

Interpretation: If Score ≥ 18, formal indication for Rapid Maxillary Expansion (RME).

Contraindications Check

Silicone allergy / Severe neurological deficit / Severe Class III

ABSOLUTE CONTRAINDICATION

Analysis Result

Waiting...

Complete the form

Salagnac Index

0/30

Recommended Strategy

Device Sequence

...

Note: V1A and V1B are manufactured from the same initial impression.

Estimated Duration

Important note: This assessment is a theoretical estimation. The final result depends on multiple factors, primarily patient compliance.

Technical Partner