Sectional Matrix Bands M4 1.0. Sectional Matrix Bands M4 2.0. The ring is not easy to deform, with good resilience and long life span. It is suitable to the subgingival expansion of dental cervix. Matrix Bands M4 2.0 6.5mm: Molar with extensions, 0.038mm, snapping back, non-stick coating Matrix Ring R5 1.0.
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