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Alineadent vs Six Month Smiles

Starting price, treatment length, supervision, FDA safety record and full spec sheet for Alineadent and Six Month Smiles, side by side. Every figure links to the source that states it.

Prices verified Sep 30, 2026FDA records verified Sep 30, 2026
21comparisons with Alineadent
22comparisons with Six Month Smiles

Alineadent (Alineadent clear aligners)·Six Month Smiles (6MS Invisible Aligners, 6MS Relapse Aligners, 6MS Mixed Appliance)

Alineadent
In-office
Six Month Smiles
In-office
At a glance
Starting price
€3,500-4,000clinic-set
Provider-setnot published

Blue marks the lower price only where every compared price is quoted the same way (a monthly price in US dollars); prices quoted in another currency, as a one-time fee or as a provider-set range are shown exactly as stated and never converted. Adverse-event figures are raw counts of reports filed with the FDA, not rates (what the reports mean). Each spec value opens that brand's spec sheet, and its numbered sources verify the specs as a set. None of this is a recommendation: the right choice depends on your case, your budget and, above all, an in-person exam by a dentist or orthodontist.

The bottom line

What actually differs

  • Neither is marked lower, since only monthly prices quoted in US dollars are ranked against each other: Alineadent €3,500-4,000 (clinic-set) and Six Month Smiles Provider-set.
  • Typical treatment differs: Alineadent 9-12 months and Six Month Smiles 6-10 months.
Go deeper

Open the full record

Alineadent
  • Prices
  • Treatment length
  • Supervision
  • FDA safety
  • Specs
  • Sources
  • Where to get it
Six Month Smiles
  • Prices
  • Treatment length
  • Supervision
Keep comparing

Every comparison with these brands

Each brand against every other brand on the market. All comparisons

All 21 comparisons with Alineadent

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  • vs Clarity Aligners
  • vs ClearCorrect
  • vs ClearPath
  • vs Dandy Clear Aligners
  • vs Glidewell Clear Aligners
  • vs Graphy
InvisibleBraces is an informational data platform, not a dentist, an orthodontist, or a seller of aligners. Nothing here is dental or medical advice, a diagnosis, or a recommendation to start, stop, or change any treatment. At-home clear aligners are not right for every case, and moving teeth without an in-person exam carries real risk. Data is aggregated from public sources and each brand's own terms and can be incomplete or out of date. Always consult a licensed dentist or orthodontist and confirm current prices and terms with the provider.
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The independent, fully-cited comparison of at-home clear aligner brands. Every figure traces to its source. Informational only, not dental or medical advice.

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Typical treatment
9-12 months
6-10 months
Supervision
In-office
In-office
FDA safety
No recalls
No recalls
FDA adverse-event reports
0
0
Treatment
Treats
CrowdingSpacing and gapsOverbiteCrossbite
CrowdingSpacing and gapsCrossbiteOpen biteDeep biteRelapse after bracesMild to moderate misalignment
Product lines
Alineadent clear aligners
6MS Invisible Aligners, 6MS Relapse Aligners, 6MS Mixed Appliance
Wear schedule
Worn at least 22 hours a day; each aligner set changed about every two weeks.
Trays changed every 2 weeks; wear hours not published
Spec sheet
Start method
In-clinic 3D intraoral scan / bite registration by a certified dentist (STL case file sent to the Ortoplus lab)
Taken by the dentist in the practice: an intraoral scan (3Shape, iTero, Cerec or STL files accepted) or PVS impressions, with x-rays and photos; there is no at-home kit.
Material
Transparent polycarbonate plastic, custom-made per patient; tray thickness stepped through the plan (thinner at the start for adaptation)
Zendura FLX, a dual-shell material (hard outer shell, elastomeric middle layer), 0.76 mm (0.030 in), per 6MS; the FDA summary describes a thermoformed polyurethane-polyester composite.
Retainers
Not published
Not included in the patient tray kit; the dentist orders removable retainers from 6MS after treatment and sets their price
Whitening
Not published
Not published
Refinements / touch-ups
Set per treatment plan by the treating dentist; Ortoplus returns treatment plans in about 24-48 hours and fabricates trays in about 48 hours after approval
Up to 2 refinements within 2 years are included in the 6MS Invisible Aligners product (aligner page); a no-charge upgrade to a braces solution is offered to the dentist if braces would produce a better outcome.
Guarantee
Not published
No patient guarantee in the current terms: a limited warranty to the dentist covers defects in material and workmanship, not the outcome
Clinical oversight
In-office / dentist-led: a certified dentist or orthodontist diagnoses, plans (via the Alineadent LineDock platform), delivers and monitors treatment in person, with fewer visits than fixed braces
In-office: a trained dentist examines, prescribes, fits and monitors; 6MS specialists prepare the plan, overseen by its orthodontists, and the dentist approves it
Financing
Set by the treating clinic; no brand-published financing
Set by each practice
HSA / FSA
Not applicable (Spain/EU brand, not a US DTC product)
The brand's cost page says HSA or FSA accounts can help offset the cost; acceptance is the practice's decision
Insurance
Not published
Some dental plans may cover part of treatment (brand's cost page)
Availability
Spain (home market); Ortoplus exports Alineadent to more than 50 countries, including Germany, Belgium and the US (about 80 percent of output is exported)
United States and United Kingdom through trained dentists (the company says its providers are in over 50 countries, without separating braces from aligners)
Headquarters
Malaga, Spain (Parque Empresarial Alameda, Flauta magica 22, 29006 Malaga)
Carrollton, Texas, United States
Spec sources
  1. 1.alineadent.com
  2. 2.dentaly.org
  3. 3.vidaeconomica.com
  4. 4.vidaeconomica.com
  1. 1.6monthsmiles.com
  2. 2.6monthsmiles.com
  3. 3.6monthsmiles.com
  4. 4.6monthsmiles.com
  5. 5.6monthsmiles.com
  6. 6.6monthsmiles.com
  7. 7.6monthsmiles.com
  8. 8.6monthsmiles.com
  9. 9.6monthsmiles.com
  10. 10.6monthsmiles.com
  11. 11.api.fda.gov
Company
On the market since
1992
2019
Parent company
Ortoplus (Grupo Ortoplus), a Spanish orthodontic laboratory founded in 1992 by Jesus Garcia Urbano; headquartered in Malaga, Spain (Parque Empresarial Alameda, Flauta magica 22, 29006 Malaga). Alineadent is one of Ortoplus's three divisions (Laboratorio Ortoplus, Alineadent, OrthoApnea).
Xplora USA LLC, doing business as Six Month Smiles, Carrollton, Texas, United States
  • FDA safety
  • Specs
  • Sources
  • Where to get it
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  • vs Modern Clear
  • vs Motto
  • vs Nuvola
  • vs Orthocaps
  • vs OrthoFX
  • vs OrthoSnap
  • vs Six Month Smiles (this page)
  • vs Smartee
  • vs Smilers
  • vs Spark
  • vs SureSmile
  • vs uLab

    • All 22 comparisons with Six Month Smiles

    • vs 32Co
    • vs Alineadent (this page)
    • vs Angel Aligner
    • vs Clarity Aligners
    • vs ClearCorrect
    • vs ClearPath
    • vs Dandy Clear Aligners
    • vs Glidewell Clear Aligners
    • vs Graphy
    • vs Invisalign
    • vs K Clear
    • vs Motto
    • vs Nuvola
    • vs Orthocaps
    • vs OrthoFX
    • vs OrthoSnap
    • vs Smartee
    • vs Smilelign
    • vs Smilers
    • vs Spark
    • vs SureSmile
    • vs uLab