Clarity Aligners uses a dual-material system with two aligner thicknesses optimized for different tooth movements. Here’s how Flex and Force aligners work.

Flex vs Force Overview

Clarity Flex (0.625mm)
Flex aligners are thinner and more flexible, designed for:
- Initial tooth alignment
- Rotational movements
- Gentle corrections
- Early treatment stages
The thinner material provides easier seating and increased comfort during initial movements.
Clarity Force (0.75mm)
Force aligners are thicker and more rigid, designed for:
- Bodily tooth movement
- Torque applications
- Complex corrections
- Final positioning
The thicker material maintains force delivery over time without excessive deformation.
When Each Material Is Used
Your orthodontist determines which material to use based on the tooth movements needed at each treatment stage:

Flex Aligners Typically Used For:
- Stages 1-8: Initial crowding resolution
- Rotation movements of canines and incisors
- Light tipping movements
- Establishing arch form
Force Aligners Typically Used For:
- Mid to late treatment stages
- Closing extraction spaces
- Root positioning and paralleling
- Intrusion/extrusion movements
- Final detailing
Advantages of Dual-Material System
Using two materials provides several benefits:
- Improved Comfort: Flex aligners are easier to adjust to initially
- Better Control: Force aligners maintain rigidity for complex movements
- More Predictable: Matching material to movement type improves accuracy
- Efficient Treatment: Optimized force delivery may reduce total treatment time
Single-Material Systems
Most clear aligner systems use a single material thickness throughout treatment. Clarity’s dual-material approach allows orthodontists to select the optimal material for each specific movement.
Care Instructions
Both Flex and Force aligners require the same care:
- Wear 20-22 hours per day
- Remove for eating and drinking (except water)
- Rinse with cool water and brush gently
- Store in case when not wearing
- Avoid hot water (can warp material)
Related Services
Learn more about orthodontic options:
Clarity Aligners at Mountainside Dental
When you choose Clarity Aligners at Mountainside Dental, you get:
- Expert Orthodontic Review: 4-5 scans sent to Clarity orthodontists for 3D modeling, video diagnosis, and treatment planning
- Retainers Included: No extra cost
- Free Refinements: Additional aligners at no charge if needed
- Cost Savings: We pass Clarity’s savings vs. Invisalign to you
- Free Consultation: Complimentary evaluation with 3D preview
Schedule a Consultation
Schedule your free consultation at Mountainside Dental to learn if Clarity’s dual-material system is right for you.
Related: Clear Aligners | Cosmetic Dentistry | Smile Makeover