Molar Distalization Calculator

Calculate molar distalization feasibility, anchorage loss, treatment time, and force requirements with or without TADs.

Space Needed (mm/side)

Arch

Using TADs

Molars to Distalize (per side)

Third Molars Absent

Patient Age

years

Applied Force (grams)

Tab to move between fields

Net Distalization (mm)

2.1

Gross Distalization (mm)3

Anchorage Loss (mm)0.9

Treatment Time (months)2.5

Remaining Space Deficit (mm)0.9

Applied Force (g)200

Maximum Possible (mm)5

Force AssessmentOptimal - within biological force range

Tipping RiskModerate - monitor molar axial inclination

FeasibilityMarginal - small deficit may be managed with IPR

How to Use This Calculator

Enter the amount of molar distalization required (mm) based on model analysis.
Enter anchorage system type and expected anchorage loss (mm).
Read net distalization achieved per cycle and total treatment duration estimate.
Review tipping vs. bodily movement ratio to assess root apex movement.
Verify adequate space posterior to the second molar before initiating distalization.

How the result changes with Space Needed (mm/side)

Space Needed (mm/side): Space needed per side from molar distalization.
Arch: 0 = Maxillary (more distalization possible), 1 = Mandibular.
Using TADs: 0 = No TADs (30% anchorage loss), 1 = With TADs (8% anchorage loss).
Molars to Distalize (per side): 1 = First molar only, 2 = First and second molars.
Third Molars Absent: 0 = Third molars present (limits distalization), 1 = Absent/extracted.
Patient Age: Patient age in years.
Applied Force (grams): Force applied for distalization. Optimal range: 150-250g.

Net Distalization (mm): Effective space gained after anchorage loss.
Gross Distalization (mm): Total molar movement before accounting for anchorage loss.
Anchorage Loss (mm): Reciprocal anterior movement (space lost).
Treatment Time (months): Estimated months for distalization phase.
Remaining Space Deficit (mm): Space still needed after maximum distalization.
Applied Force (g): Force level used for distalization.
Maximum Possible (mm): Anatomical maximum distalization per side.

Identify Input Parameters
4 parameters
Space Needed (mm/side) = 3, Arch = 0, Using TADs = 0, Molars to Distalize (per side) = 1 = 7 input(s) provided
Calculate Net Distalization
Net Distalization
2.1 = 2.1
Calculate Gross Distalization
Gross Distalization = min(spaceNeededMm, maxTotalDistal)
3 = 3
Calculate Anchorage Loss
Anchorage Loss
0.9 = 0.9