Review: Walser Dental Matrix System
About one year ago I switched from the usual band matrices to the Walser Matrix System. I have decided for the Walser matrices because these are relatively more delicate instruments and matrices which can be used with a smaller mouth opening. Furthermore the patient may bite when the matrix is placed. The matrices are manufactured in 27 sizes, strip heights of 5 to 8 mm. The manufacturer offers three assortments with a special forceps and a sterilizing tray.
The application of this matrix system is quite simple, the matrices are placed with only a gesture without screwing or a clamp. The forceps is to set and to spread into the recesses of the matrix. In this case the two matrix bands move in parallels into the desired width. Since this is a resilient system the matrix fits on the conical form of the tooth automatically after releasing the forceps.
Even at low interproximal cavities there are no problems. Especially for this purpose two new matrices have been developed (No. 10c, 6c). One of the two bands of each matrix is 3 mm deeper than the other one. By the use of these matrices extending the band in the interproximal areas is no more necessary. I have not observed papillary bleeding in any case.
By using other matrix systems it happens occasionally that corresponding set approximal fillings are broken by removal. I have not seen this since using the Walser Matrices. The matrix bands are extremely thin and usable for light guidance. So I can use the same matrix system in the posterior region for each tooth and each filling material.
A positive side effect is the fixation of the cotton rolls by the matrices. So the patient can not move the sublingual cotton roll into a desired direction by swallowing or tongue movements.