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    Clinical Study
    Indestructible Non-compliance Class II mechanism
    ​The Flex Developer
    ​
    Written by: Dr. Heinz Weinsauer &
    Dr. 
    Alfred Peter Muchitsch

    To request your copy of this clinical paper please fill out your information and press the request button below.
SUBMIT REQUEST
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Dr. Heinz Weinsauer - Dr. Alfred Peter Muchitsch - Chapter 11 

Pulling or Pushing Class II Mechanics?


"At first it may not seem that the difference between these two types of mechanics is particularly relevant, since it is clear that both aim at the correction of Class II situations. However, the effects are different and important.
Pulling intermaxillary Class II mechanics, such as elastics or closed superelastic coil springs, may lead to open bite situations due to the extrusion of teeth and an increasing force when opening the mouth. As extrusion happens much faster than intrusion, this is a common threat. 
In contrast, pushing intermaxillary Class II mechanics have an intruding side effect on upper molars and lower anterior teeth. As mentioned above, this vertical effect (intrusion) is much smaller than the extrusion created by pulling appliances. At the same time, it must be realized that the greatest force levels in the pushing devices are achieved in the final stages of mouth closing and include therefore a significant horizontal component. Taking this one stage further, it is interesting to contrast the effect of the Jasper Jumper™
and the FD. Experiments and clinical evidence show clearly that the effect of the FD is similar to that of the Herbst appliance, whereas the Jasper Jumper develops its maximum force while the force vector is in a less optimal (more vertical) direction.
Using rigid constructions such as the Herbst appliance or the FD, an immediate decrease of force is observed when the patient moves the mandible forward or opens the mouth only slightly. Therefore the FD can be applied even in high angle Class II or in open bite cases (see Figs 11.20–11.36).
More than 2000 orthodontists are now using the FD because of its simple insertion and outstanding durability."


Appliance used in this study

FLEX DEVELOPER™
Durable and effective Class II Correction

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The FLEX DEVELOPER™ is designed to deliver a reliable force between mandible and maxilla. The power derives from an elastic mini rod that can be thinned to enable a range of treatment forces, eliminating the need to order and stock many different forces. The force ranges from 1,000 grams to as little as 50 grams (10 – 0,5 N) and is individually adjusted for the perfect fit for each patient. This one of a kind elastic rod is highly durable, able to withstand the rigorous forces of treatment while maintaining its power and elasticity. 

2.5 mio cycles - Unbreakable and long lasting elasticity

The Flex Developer's™ mini rod was put through an Un test (in vitro). This test was stopped after 2,5 Mio. cycles, as practically no changes in the force deliverance rate could be observed. This equals 500 days of treatment time, if a bite rate of 5,000 cycles per day is estimated. Clinical testing proved optimal endurance and strength and has set a new benchmark for inter-maxillary force deliverance.

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"Even after continuous use for many months there is no breakages or loss of power"

Length and force adaptablity

Reduces undesired effects

This one size elastic mini rod can be easily shortened and thinned to offer you complete customization of length and force.

Applications
• Distalising upper molars (HG-like)
• Mesialising lower molars or premolars
   (Aplasia or after extractions)
• Cl II-corrections between upper and lower dental arch
• Helping to grow the mandible forward
• Retrusion of upper incisors
• Protrusion of lower incisors
• Midline corrections (unilateral
   application)
• Unilateral dental Cl II correction
   (unilateral application)
• Space closure (even single-sided) in the
   mandible  (aplasia)



Unique by-pass arch enables the FLEX DEVELOPER to slide back passively without force or side effects.

Unique features
• Reliable
• Highly durable
• Length adaptable to individual need
• Force adaptable to individual need
• Lasting elasticity
• Relockable anterior piece
• Measuring gauge for quick installation
• Can be combined with lip bumper or headgear
• Securing mini disc for pin safety
• Auxiliary bypass arch pre-bent for
   precise function
• Small and streamline – more comfortable
• Easy to install
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Starter kit: Utility cutter - FD ruler - Gyro Form buffers - Torquing key - Headgear pins - 5 right & 5 Left FDs
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Refill kit: 5 right & 5 Left
Read brochure and item numbers
Read user manual
Place online order now

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  • HOME
  • ALL ORTHO PRODUCTS
    • Metal Brackets >
      • FLAIR SLT™ customize your torque
      • CROWN SLT™ Bracket System
      • NICKEL FREE™ Bracket
      • ECONOLINE™ Bracket
      • Simply Stainless
      • 3/4 DEEP BITE™ Bracket
    • Asthestic Brackets >
      • DISCREET Ultra-low Friction
      • CLEAR Brackets
      • BREEZE SL Ultra-low Friction Bracket
    • Lingual Treatment >
      • EVOLUTION SLT™ Lingual Bracket
      • JOY™ Lingual Bracket
      • Lingual Lab Technique
    • Buccal Tube & Bands >
      • BUCCAL TUBES
      • NICKEL FREE BUCCAL TUBES
      • SIMPLY STAINLESS BANDS
    • SMART Innovation Products >
      • HYCON Device
      • EASY-WAY-COIL Spring System
      • DISTAL GLIDE
      • The CURVE IPR
      • FLEX DEVELOPER™
      • Reflex Communicator
      • Starlight Express
    • Wire overview >
      • ARCHFORMS
      • Choosing the best wire
      • Nickel Titanium
      • Heat Activated Nickel Titanium
      • CNA BETA III
      • Nickel Titanium Springs
      • Stainless Steel
      • Reverse Curve Archwires
      • Lingual Wires
    • Extra-oral Headgear >
      • Highpull, Neck Pads, Safety Modules, Chin Cups
      • Vertical Pull Headgear
      • Expanders
    • Photography Mirrors
    • Marketing materials
  • LAB TEC
    • Model Maker (MM)
    • Set-up Model Maker (SUM)
    • Occlusal Plan Reference (OPR)
    • Surgical Model Accuracy Device (SMAD)
    • LAB TEC Accurate Bracket Positioner (ABP)
  • CONTACT US
  • BLACK FRIDAY
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