The BioBiteCorrector versions MS and SP with a screw connector can be easily attached to multibracket wire. This orthodontic combination is used for treatment of Angle Class II Malocclusion.
BioBiteCorrector MS Without internal spring
BioBiteCorrector SP with internal stainless steel spring
The BioBiteCorrector MS as a passive-rigid appliance is able to precisely guide the mandible into bilateral Class I occlusion and therefore does not need coil springs.
The BioBiteCorrector SP supports the advancement of the lower jaw with an internal coil spring.
BBC-MS appliance on a patient
Before placement of BBC
BBC-MS appliance on a patient
After placement of BBC
Class I after treatment
The BBC MS and BBC SP screw connectors guarantee a quick and easy inserting process. This design prevents any sliding on the wire and causes no pressure on the adjacent brackets.
BioBiteCorrector versions MS (without compression spring) and SP (with compression spring) have a screw connector. These versions can be screwed to a square wire.
BioBiteCorrector MS and SP versions are always placed interproximally due to their screw connectors. The screw connector is placed between the canine and the 1st premolar in the lower jaw, and between the 1st molar and the 2nd premolar in the upper jaw.
The BioBiteCorrector® SP supports the advancement of the lower jaw with an internal coil spring. The BBC MS works based on the functional principles of the Herbst-appliance and therefore does not have an internal coil spring.
BioBite MS Class II Corrector
Installation of the BBC using various screwdrivers
BioBiteCorrector Deutsch
Advantages of the BioBiteCorrector
For the placement of a BioBiteCorrector, there have to be multibracket appliances in the upper and lower jaws, with steel archwires with a minimum size of 0.017″ x 0.025″.
In the lower jaw the steel archwire must have a cinch back distally from the first or second molar.
Tip: For the cinch back we recommend a Twister -Instrument. It helps to bend the arch very easily by 90° without risking removing the bracket from the tooth.
“Standard” is used in non-extraction cases.
Only in extraction cases in the upper jaw, ” Small” is used.
The BBC is supplied completely pre-assembled. Different appliances are available for the left and right sides. The BBC is fixed in place first in the upper jaw and then in the lower jaw.
The upper jaw connecting element is fixed in place between the first molar and the second premolar. The connecting element should not contact the bracket of the first molar. The screwdriver must be secured with dental floss to avoid aspiration or swallowing.
Slide the body on the archwire from the lateral side and then fix the screw.
After fixing in place the upper jaw connecting element, the lower jaw con-necting element is fixed in place between the canine and the first premolar. Slide the body on the archwire and then fix the screw. The connecting ele-ment should be situated as distally as possible and touch the mesial side of the bracket of the first premolar. However, the connecting element must not contact the canine bracket at all. Fix the other side in the same way.
After both sides are fixed in place, the lower jaw is guided back as far as pos-sible. If there still is distal occlusion, the lower jaw can be shifted forward using the spacers. These spacers can be crimped on the appliance, so that the lower jaw can be precisely shifted into bilateral neutral occlusion.
The spacers are attached to the thinnest telescopice tube. Fine corrections can be carried out by shifting the connecting element.
Situation before fixation of the BBC
Directly after fixation of the BBC
After removal of the BBC
Treatment result
Situation before fixation of the BBC
Directly after fixation of the BBC
Treatment result
Initial situation
Situation before fixation of the BBC
Directly after fixation of the BBC
Treatment result
Initial situation
Situation before fixation of the BBC
Directly after fixation of the BBC
Treatment result
Initial situation
Situation before fixation of the BBC
Directly after fixation of the BBC
Treatment result
Will you continue to improve the BBC?
Yes, we try to continually improve the BBC. The is is why we greatly appreci-ate your feedback.
Can patients help themselves if there is a problem with the BioBiteCorrector (BBC)?
We recommend always consulting an orthodontist if possible. The screws of the BBC can be opened with a standard 0.9 mm hexagonal wrench.
How can I more easily slide the BBC on the maxillary arch?
Because of the ball joint, the body is very mobile. In clinical practice, it has proved useful to slide the BBC over the archwire in a “straight” position (see video). The clinical video on the website willis also be helpful. It demon-strates in real time how to completely mount the BBC on a patient in only 3 minutes.
The titanium screws frequently loosen.
Be sure to use an archwire .025 inches in width. In addition, you can use a light cured flowable composite to fix in place the screws. They can be un-screwed in a conventional manner using the BBC screwdriver.
Mechanical screw insertion.
The screwdriver of the BBC system allows you to mechanically fix in placeing the screws. However, we do not recommend using a conventional micromo-tor for this purpose. Its speed and torque would be too high, and you might damage the threads of the BBC. Therefore, we recommend the pros-thodontic screwdriver made by W&H.; This device allows you to adjust the torque (8-40 Ncm) and features a speed of only 25 rpm.
How can I avoid fractures of the archwire?
We recommend using a stainless steel archwire with a minimum size of .017 x .025 inches. The width of the archwire should always be .025 inches.
Why isn’t there any coil spring inside the BBC MS and BBC Classic?
The BBC is based on the method of “Jumping the bite”. This means that only the hinge length determines the desired mandibular position. Therefore, the BBC does not require a coil spring. “Jumping the bite” is a proven meth-od. Many removable functional appliances, such as Twinblock or the fixed Herbst appliance, operate on this principle.
How long does the BBC therapy take?
The BBC works like a Herbst treatment. The fixed Herbst appliance is very well documented in the literature. In general, the BBC treatments takes 6 months in moderate cases. In adults or extreme Class II cases, the BBC should be removed after 9 months. The BBC therapy can be shortened in minor Class II cases (4 months). The multibracket appliance should not be removed immediately after the BBC treatment. The patient should wear short Class II elastics to stabilise the result achieved.
How can the position of the lower jaw be adjusted?
The hinge length (closed BBC) determines the desired mandibular position. After installing the BBC, the lower jaw is guided distally as far as possible. If there is still a distal occlusion, the lower jaw can be shifted forward using the spacers, which are crimped on the appliance. A spacer is 1.5 mm wide, so for instance, to move the lower jaw forward by 4 mm, 3 spacers will be needed. However, this means thate activation will be 4.5 mm, i.e. 0.5 mm too long. This can be compensated for by sliding the BBC on the archwire 0.5 mm forward.
How do the BBC attachments work?
The BBC attachments can be welded to a single band by using a laser. We do not recommend a classical soldering. Due to the large influence of heat, the material properties of the band are significantly deteriorated. For retention splints and snoring devices in combination with a BBC, the attachments can be polymerized on an aligner.
Self-ligating brackets
When using the BBC in combination with SL-brackets, the brackets should be secured with a ligature to protect the locking mechanism.
Ceramic brackets
Ceramic brackets should not be used in close vicinity to the BBC’s connecting elements. Generally, this concerns the canines and first premolars in the lower jaw, and the second premolars in the upper jaw.
Rebonding brackets
The following procedure has proven successful when immediately incorporating a steel archwire after bracket loss. Ligate a piece of steel archwire to the bracket before rebonding. Then it will be easier to align the bracket to be rebonded with the adjacent bracket slots, so it can be bonded safely and if possible, passively.
After placing the BBC, there is usually no tooth contact in the posterior re-gion.
As a result of the advancement of the mandible into direct Class I neutral occlusion, the posterior teeth usually do not contact. This is referred to as “Christensen’s phenomenon”and occurs when “jumping the bite”. The teeth extrude automatically during the BBC treatment and the deep bite is automatically corrected. After the BBC treatment, the patient should wear short vertical Class II elastics for stabilisation and full tooth contact.
Can "Christensen’s phenomenon" be reduced?
Gradual advancement of the mandible can reduce “Christensen’s phenome-non”. In this case, no spacers are used after placing the BBC. The use of the “Small” size in a non-extraction case can also be considered.
The canine in the upper jaw is in contact with the lower connecting element of the BBC.
In general, contact between the BBC and the canine isn’t a problem, but it is possible to move the lower jaw forward with spacers. Then the overbite will decrease, posterior desocclusion will increase, and any contact with the ca-nine of the upper jaw will be avoided.
