FAQs

General / Sales / Distribution Faqs
Can I use your sectional matrix system without rubber-dam?

It is highly recommended to use a rubber dam when performing dental restorations. This is to avoid contamination of the operating field and increase patient safety.

Who should I contact for product sales inquiries and prices?

We suggest to contact your local Polydentia distributor partner. Please click on this link to see the list of our international distributors.

Unica anterior matrix system
What’s the thickness of Unica anterior matrix?

The thickness of the anterior matrix Unica anterior is 0.03mm.

When should I use myCustom Resin with Unica anterior?

The use of myCustom Resin is recommended for fixing Unica anterior when it is not possible to adapt the matrix with interdental wedges. For example, in the case of a class III cavity adjacent to the cervical area of the tooth, the interdental wedge would risk deforming and/or moving the matrix (fig. 1). Therefore, the use of myCustom Resin is recommended in this case (fig.2).

Can I use other resins to fix Unica anterior?

We recommend using myCustom Resin as it features the ideal thixotropy and light-curing time to optimise the procedure.

myClip 2.0 sectional matrix system
How to autoclave myClip 2.0: in one piece or separately?

According to the cleaning and sterilization guides, all detachable components of the devices must be disassembled. The myTines must be removed from the ring.

Will myClip 2.0 loose the separation force after extensive usage?

No, tests have shown that the force of myClip 2.0 would not vary for at least 300 usage cycle.

How should I place the matrix?

The matrix should be “smiling”. It should be used with the extremities facing upwards. (Like the letter U).

Are the myTines single-use?

No, they are autoclavable, sterilisable and interchangeable.

Do myTines break easily?

myTines have been developed not to break easily and resist multiple uses. However, the plastic material has a limited life cycle, which is why they can be replaced.

What material is your myClip 2.0 ring made of?

Stainless steel with surface colouring treatment.

Is myClip 2.0 made of plastic?

No, only the tines are made of plastic while the ring body is made of stainless steel with a surface colouring treatment.

Are your matrices disposable or re-usable?

Matrices are always single-use since they are shaped on a case by case basis. Moreover, in case of steel matrices, they can lose their shape during extraction.

Do the matrices have a non-stick treatment?

No, however thanks to the very high quality of the steel used to produce our matrices, the extremely smooth surface prevents the adhesion of composite / glass-ionomer to the matrix.

What are the advantages of using a sectional matrix over a Tofflemire matrix band?

The curved and anatomical shape of the sectional matrices, in combination with the clamping action of the ring, allows for an optimal reproduction of the original proximal anatomy of the contact point.

Quickmat Forte sectional matrix system
Is it possible to perform restorations of two adjacent cavities, mesial and distal at the same time?

Yes, the strength of the myRing Forte is sufficient for a proper teeth separation, allowing to compensate the thickness of two matrices – However in this case we recommend the use of ultrafine matrices with a thickness of only 0.025mm – Moreover, the design of the tines makes it possible to clamp the matrix in an optimal way both on the mesial and distal walls.

How to autoclave: in one piece or separately?

According to the cleaning and sterilization guides, all detachable components of the devices must be disassembled. The myTines must be removed from the ring.

Can I refit the ring in case of deformation?

Should myRing Forte deforms due to incorrect use, it can be reconditioned using the special ring notches on the forceps myForceps.

Does it keep the separation force?

Yes, the double spring geometry of myRing Forte has been studied specifically to retain the separation force and avoid the deformation of the ring.

Can I perform MOD cavity restorations with myRing Forte?

Yes, you can use myRing Forte for MOD cavity restorations.  The geometry of the sectional system has been specially developed to allow the use of two rings at the same time.

How should I place the matrix?

The matrix should be “smiling”. It should be used with the extremities facing upwards. (Like the letter U).

How many times can the tines be used?

The tests show a resistance of the material of about 50 autoclave cycles. However, it depends on the way in which they are used.

Do myTines break easily?

myTines have been developed not to break easily and resist multiple uses. However, the plastic material has a limited life cycle, which is why they can be replaced.

What is the material of the tines?

Autoclavable thermoplastic polymer.

What is the myRing Forte made of?

Stainless steel.

Is myRing Forte made of plastic?

No, only myTines are made of plastic while the ring body is made of stainless steel with a surface colouring treatment.

Are your matrices disposable or re-usable?

Matrices are always single-use since they are shaped on a case by case basis. Moreover, in case of steel matrices, they can lose their shape during extraction.

Do the matrices have a non-stick treatment?

No, however thanks to the very high quality of the steel used to produce our matrices, the extremely smooth surface prevents the adhesion of composite / ionomer glass to the matrix.

What are the advantages of using a sectional matrix over a Tofflemire matrix band?

The curved and anatomical shape of the sectional matrices, in combination with the clamping action of the ring, allows for an optimal reproduction of the original proximal anatomy of the contact point.

myQuickmat Classico sectional matrix system
Can I refit myRing Classico in case of deformation?

The myRing Classico ring is made of Nickel Titanium. This material allows myRing Classico to feature an outstanding elastic memory. Therefore, it cannot be permanently deformed even in case of excessive opening and it will always return to its original shape.

Can I perform MOD cavity restorations with myRing Classico?

Yes, you can use myRing Classico for MOD cavity restorations.  The ring and the tines’ geometry has been specially developed to allow the use of two rings at the same time.

How to autoclave: in one piece or separately?

According to the cleaning and sterilization guides, all detachable components of the devices must be disassembled. The ring extremities must be removed from the ring.

How should I place the matrix?

The matrix should be “smiling”. It should be used with the extremities facing upwards. (Like the letter U)

What material is myRing Classico ring made of?

Nickel titanium with autoclavable thermoplastic over-moulding polymer.

Is your myRing Classico ring made of plastic?

No, the ring body is made of Nickel titanium with autoclavable thermoplastic over-moulding polymer.

Are your matrices disposable or re-usable?

Matrices are always single-use since they are shaped on a case by case basis. Moreover, in case of steel matrices, they can lose their shape during extraction.

Do your matrices have a non-stick treatment?

No, however thanks to the very high quality of the steel used to produce our matrices, the extremely smooth surface prevents the adhesion of composite / glass-ionomer to the matrix.

What are the advantages of using a sectional matrix over a Tofflemire matrix band?

The curved and anatomical shape of the sectional matrices, in combination with the clamping action of the ring, allows for an optimal reproduction of the original proximal anatomy of the contact point.

myJunior paediatric sectional matrix system
What matrices should I use for paediatric restorations?

We have paediatric sectional matrices that are 0.04mm thick and 3.75mm high. These junior sectional matrices are available in both Quickmat and LumiContrast versions.

Why do you break the wedge when using myJunior rings with silicone tubes?

The wedge should be broken to achieve better matrix adaptation when using silicone tubes.

myForceps
Can I use other forceps to position your rings?

myForceps was developed especially for Polydentia’s sectional matrix systems and its use with our rings is strongly recommended.  Other forceps cannot guarantee the right fit and strength to operate our rings.

LumiContrast sectional matrix
What is the purpose of dark colour?

The dark-blue colouring develops better contrast between the cavity and matrix. This makes it easier to identify the operating area and the low reflection reduces eye fatigue, especially when using microscopes or loupes.
The dark blue colouring also allows the thickness of the reconstructed proximal wall to be evaluated. The thickness of the reconstructed wall is ideal when the matrix is no longer visible through the composite.

Can the coating of the Lumicontrast sectional matrices peel off?

No, as this is not a coating but a surface modification of the steel surface.

myWedge
Can I use 2 myWedges one stacked on top of the other?

Yes, the hollow geometry allows the use of two stacked myWedge for a better cervical adaptation of the matrix, if the clinical situation so requires.

What is the difference between myWedge and a wooden wedge?

myWedge is a plastic v-shape, compressible, hollow wegde which allows to gently adapt the matrix to the tooth and does not perform an orthodontic action. For this reason, myWedge should be used with myRing Forte since the separating action is already produced by the ring.
Instead, wooden wedges should be used with myRing Classico and myClip 2.0, as they provide the separation force needed to perform the restoration

Vista-Tec protective face-shields
Are Vista-tec laStoria and Vista-tec ilGrande CE certified?

Yes, Vista-Tec laStoria and Vista-Tec ilGrande are CE certified according to EN 166:2001 and Regulation (EU) 2016/425. This means that the system has passed rigorous safety, optical quality and stability tests, according to the related European Quality Standard.
In addition, Vista-Tec ilGrande is also CE certified as “splash-proof” against liquid splashes according to the relative European Certifying Standard.

Can I autoclave Vista-tec?

The frame of Vista-Tec ilGrande (black frame), along with the headband and the buckle can be autoclaved with a standard 134˚ 20-minute prion cycle. Do not autoclave the shields.

How many times can a Vista-tec shield be used?

A Vista-Tec shield can be used as long as it allows optimal vision. Please refer to the Instructions for Use for optimal maintenance.

How can I clean and disinfect Vista-tec shields? What kind of disinfectant can I use?

Vista-Tec shields can be cleaned as you would any other optical protective device: place the shield under a stream of lukewarm water and deterge using a lotion-free dish soap solution. Then rinse with warm water, and dry with a clean, soft cotton or microfiber cloth.
They can be disinfected using common mild alcohol-based disinfectants.
For more information, please read our Vista-Tec instruction for use.

What’s the material of Vista-tec shields?

The shields of Vista-Tec ilGrande, Vista-Tec laStoria and Vista-Tec LupOn are made of premium optical grade polycarbonate. The shield of Vista-Tec ClipOn is made of high-quality PET

Would vista-tec products create eye-fatigue?

The premium optical property materials used for our Vista-Tec shields allow clear vision and help avoid unnecessary eyestrain.

What are the sizes of Vista-tec face-shields?

These are the sizes of our Vista-Tec frames and shields:
– Vista-Tec laStoria and ilGrande frames: one-size-fits-all
– Vista-Tec laStoria shield: W23 x H16.2cm
– Vista-Tec ilGrande shield: W32 x H22.5cm
– Vista-Tec ClipOn shield: W22cm x H16cm
– Vista-Tec ClipOn L-Shield: W24cm x H16cm
– Vista-Tec LupOn M-shield: W32cm x H22.5cm
– Vista-Tec LupOn L-shield: W36cm x H22.5cm

I wear eyeglasses, does Vista-tec face-shield fit over them?

Yes, our handy Vista-Tec ClipOn clips that allow application of ClipOn shields to your eyeglasses
Clipon clips can be inserted on thin-frame spectacles with temple arms of a maximum height of 1cm.

I wear loupes, does Vista-tec face-shield fit over them?

Yes, our handy Vista-Tec ClipOn and Vista-Tec Lupon clips allow application of a protective shield to your loupes.
Vista-Tec ClipOn can be inserted on thin-frame loupes with temple arms of a maximum height of 1cm. For thicker frames, please use Vist-Tec LupOn.
Vista-Tec LupOn M-shield is suitable for galilean loupes, while Vista-Tec LupOn L-shield is ideal for prismatic loupes.