Dental matrix band
AssigneeDENTSPLY SIRONA Inc.
InventorSimon P. McDonald
Life of this patent
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Abstract
The present invention relates to a dental matrix for use repairing and restoring inter-proximal cavities on a tooth with light-cured composites, the dental matrix comprising a matrix body and a plurality of light transmitting micro-pores positioned on the matrix body and overlying the inter-proximal surface of the tooth when the dental matrix engages the restored tooth. The present invention further relates to a method manufacture of such dental matrix.
Claims9
A dental matrix for use in repairing and restoring inter-proximal cavities with light-cured restorative material, the dental matrix comprising:
- a first side and a second side,
- a metal substrate on the first side comprising a plurality of hexagonal micro-apertures arranged in a honeycomb pattern, wherein the hexagonal micro-apertures are filled with a transparent or semi transparent resin, and
- a polymer layer on the second side covering both the metal substrate and the resin filled hexagonal micro-apertures for contacting the tooth in use,
- wherein the transparent or semi transparent resin and the polymer layer are made of different materials;
- wherein the polymer layer on the second side includes a fluorocarbon that does not stick to a dental restorative material, the polymer layer forming a smooth non-stick surface finish;
- wherein each of the plurality of hexagonal micro-apertures has an area of between 300 and 80,000 square microns;
- and
- the plurality of hexagonal micro-apertures are positioned on the metal substrate such that when the dental matrix is formed into desired configuration around the tooth being restored, the plurality of hexagonal micro-apertures align with inter-proximal tooth surfaces of the tooth being restored.
A dental matrix for use in repairing and restoring cavities with light-cured restorative material, the dental matrix comprising:
- a metal substrate comprising an arrangement of a plurality of micro-apertures, wherein the plurality of micro-apertures comprises elongate micro-apertures each having a length greater than a width, a first set of an at least some of the elongate micro-apertures being arranged in concentric partial rings about a centre region with each length of the at least some of the elongate micro-apertures aligned and oriented approximately radially towards the centre region, thereby eliminating the need to align a light source directly perpendicularly or normal to the dental matrix, and a second set of the elongate micro-apertures located at or near to a bottom edge of the dental matrix with their lengths aligned approximately horizontally,
- wherein the centre region being centre of the arrangement of the micro-apertures arranged in the concentric partial ring.
Dependencies are inferred from the claim text.