How to Use the Bioclear Adjustable Push-Pull
A practical guide to matrix adaptation and contact development using the Bioclear Adjustable Push-Pull Instrument.
Achieving appropriate proximal contacts and anatomical contours is an important part of successful posterior composite restorations.
The Bioclear Adjustable Push-Pull has been designed to assist clinicians with the positioning and adaptation of posterior anatomical matrices, including the Evolve matrix system.
Its adjustable mechanism and dual-ended design provide different options for working with premolars, molars and smaller cavity preparations.
Adjustable posterior matrix adaptation instrument featuring numbered settings and rounded working tips.
Watch: Adjustable Push-Pull Instrument
See the instrument and its different adjustment options for posterior matrix adaptation.
What Is the Adjustable Push-Pull?
A dual-ended instrument designed to help clinicians position and adapt anatomical matrices during posterior composite restorations.
Adjustable Working End
A numbered sliding adjustment allows the clinician to adapt the working end for different posterior tooth widths and matrix configurations.
Dual-Ended Design
The instrument includes an adjustable end and an additional working end for smaller preparations and more restricted areas.
Rounded Working Tips
Rounded tips are designed to assist with controlled matrix positioning while reducing the risk of damaging the matrix.
Evolve Matrix Compatibility
The adjustable mechanism is intended for use with posterior anatomical matrices, including the Bioclear Evolve range.
Push & Pull Adaptation
The instrument supports both pushing and pulling movements to help guide the matrix into the desired contact position.
Stainless Steel Construction
Manufactured from stainless steel for repeated use within the appropriate cleaning and sterilisation protocols.
What makes it different?
Unlike a conventional fixed-width
adaptation instrument, the
adjustable Push-Pull allows
the working width to be selected
according to the posterior tooth
and matrix being used.
Understanding the Adjustable Settings
The instrument's numbered guide helps clinicians select an appropriate working width for different posterior restorative situations.
Smaller Posterior Teeth
The smaller adjustment is intended for premolars and narrower posterior restorative situations.
Useful where the available space and anatomical dimensions require a narrower working width.
Everyday Class II Restorations
The intermediate settings are commonly used for standard molar restorative situations.
The original tutorial describes their use with the Blue Evolve matrix.
Wider Posterior Contacts
The wider settings can be selected for broader molar anatomy and larger matrix configurations.
The original tutorial highlights their use with the Orange Evolve matrix.
Important:
These settings are a guide
to instrument adjustment,
not a substitute for
selecting the correct matrix
or confirming its clinical fit.
The appropriate position depends
on tooth anatomy, preparation
dimensions and the intended
contact relationship.
Understanding Push & Pull Adaptation
The instrument provides controlled ways to help position the matrix against the adjacent tooth and establish the intended proximal contour.
PUSH
The working end can be used to apply controlled pressure to the matrix, helping move it towards the desired contact position.
The objective is to support appropriate matrix adaptation without creating unnecessary distortion.
PULL
The alternative movement allows the clinician to engage and guide the matrix from a different direction.
This can be useful when the preparation, adjacent tooth or available access makes conventional adaptation more challenging.
Clinical principle:
The goal is to achieve
the intended contact
position and matrix
adaptation before
the main restorative
material is placed.
The precise movement
and instrument setting
should be selected
according to the clinical
situation.
What About Small Preparations?
Not every posterior restoration requires the adjustable end of the instrument.
Fixed Small Working End
The instrument's smaller, non-adjustable working end provides another option for restricted access and compact cavity preparations.
Small Preparations & Diastema Closure
For very small preparations or selected posterior diastema closures, the original tutorial also discusses using the smaller end or a convex Bioclear paddle instrument.
Where Does the Push-Pull Fit in the Clinical Workflow?
Matrix adaptation is one stage within a complete Class II restorative procedure.
Select the Matrix
Choose an appropriate posterior matrix based on tooth anatomy, cavity dimensions and the intended emergence profile.
Position & Stabilise
Seat the matrix and use the appropriate wedge and separation system for the clinical situation.
Adapt the Matrix
Use the Push-Pull to help position the matrix against the adjacent tooth and develop the desired contact area.
Restore & Verify
Continue with the selected restorative protocol, then assess the final contact, anatomy and marginal adaptation.
Spot Weld technique:
The Push-Pull can also be
used alongside the Bioclear
Spot Weld technique,
where flowable composite
is used to stabilise
the matrix in the
intended contact position.
Correct matrix placement
and the full restorative
protocol remain essential.
Adjustable Push-Pull Instrument
Designed for posterior matrix adaptation with the Bioclear Method.
Featuring a numbered adjustable mechanism, dual-ended functionality and rounded working tips, the instrument provides additional flexibility when positioning posterior anatomical matrices.
Suitable for use with Bioclear Evolve and Biofit posterior matrix systems.
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Frequently Asked Questions
Practical questions about the Bioclear Adjustable Push-Pull.
What is the Bioclear Adjustable Push-Pull used for?
The instrument is designed to assist with positioning and adapting posterior anatomical matrices during direct composite restorations.
Which matrices can I use with the Push-Pull?
The instrument is designed for use with the Bioclear Evolve and Biofit posterior matrix systems.
Which setting should I use for a premolar?
The original tutorial describes the 4.5 setting for narrower posterior situations, including premolars.
The appropriate setting must still be selected according to the tooth and matrix being used.
What settings are used for molars?
The tutorial describes settings 5–6 for standard molars and 7–8 for wider molars.
These are guides rather than fixed rules for every clinical situation.
Can I use the Push-Pull for small preparations?
Yes. The instrument includes a smaller working end intended for compact cavity preparations and restricted spaces.
Does the Push-Pull replace separation rings and wedges?
No. The Push-Pull is an adaptation instrument.
Appropriate matrix selection, wedging, tooth separation and restorative technique remain important for Class II contact development.
Can it be used with the Spot Weld technique?
Yes. The product information recommends pairing the instrument with the Bioclear Spot Weld technique for selected posterior restorations.
Where can I learn posterior Bioclear techniques?
Bioclear Matrix UK offers hands-on education covering posterior anatomical matrices, Class II restorations, contact development and heated composite injection moulding.
Master Posterior Matrix Adaptation
Understanding the instruments is only part of developing confidence with posterior composite restorations.
Our Bioclear Introduction and Core Posterior courses cover anatomical matrix selection, Class II contacts, contemporary cavity preparation and heated composite injection moulding.
Explore Bioclear Courses →