Australasian Dentist Magazine Nov Dec 2021

Category 54 AustrAlAsiAn Dentist D r Fiona Paterson shared a recent clinical case using the sure Matrix™ from rhondium. this sectional matrix is similar to other matrices except that it has a unique long tab that is pulled towards the adjacent tooth and temporarily tacked in place with Blue Bond™. this guarantees a tight contact because the band cannot move away from the contact point. Firm wedging created separation and resulted in tight predictable contacts without the need for a retainer ring. Blue Bond™ is a light-cured temporary resin (included) used to bond the long tab of the sure Matrix™ to the occlusal surface of the first molar, thereby ensuring complete control of the width of contact with the adjacent contact point. sure Matrix™ is a very simple technique that minimises the need for rotary instrumentation. Class II clinical case with new Sure Matrix™ Step 1 – Prep & wedge After prepping the cavity, place the sure Matrix tM , and wedge firmly with an appropriate wedge. rhondium’s separator Wedges tM is specifically designed for this – however wooden wedges are also applicable. Allow the wedge to separate the teeth for a minute or so and then push the wedge into the interproximal space again. this ensures that the tooth separation is greater than the matrix foil thickness (35 microns). Step 2 – Create a tight contact with Blue Bond. ensure the matrix is in the correct vertical position and the tab is directly above the desired contact point. Apply the Blue Bond or flowable resin around the long tab of the matrix. Place a dental probe into the small hole in the long tab and pull firmly towards the adjacent tooth while still pulling, light-cure the Blue Bond. Pull harder to gain a broader contact point. A dimple should appear at the contact point demonstrating that the matrix is in contact with the adjacent contact point. this feature often alleviates the need to burnish. some dentists light- cure their bonding agent at the same time as they cure the Blue Bond, saving a curing step. if the adjacent tooth has a ceramic crown or large amalgam, apply dental bond prior to the Blue Bond to aid adhesion. if there are any gaps between the matrix wings and the cavity margins apply Blue Bond on the outside of the matrix. use a flat plastic or probe to hold the matrix in the correct position and light-cure the Blue Bond. u For more information visit www.rhondium.com or email info@rhondium.com Step 3 – Create natural anatomy and margins with Blue Bond liniCal