Recently, a patient came to see me with a complaint of a broken front tooth. I found that tooth #9 had fractured at the gingival crest.
After the cementation of crowns, all the visible cement is removed and floss passes smoothly, making it easy to assume that all of the cement has been cleaned up. But as a final check, when an x-ray is taken, a little piece of resin cement is found just below the proximal contact area, hidden in the subgingival area and stuck to the enamel surface.
PrepSure is used to confirm that the proper amount of reduction has been performed on crown abutments—neither insufficient nor over-reduction—to avoid necessitating metal occlusion and prevent premature crown breakage. This, in turn, maximizes the longevity of the crowns and prevents hypersensitivity after crown seating.
Sometimes a dentist is called upon to provide a crown under the clasp of an existing partial denture when significant dental decay has developed on the abutment tooth.
I needed an instrument to guide and confirm the occlusal clearance mechanically to create ideal abutments every time for every patient. This avoids all the guesswork and any further waste of costly chair time, which could compromise an otherwise excellent patient experience.
And with that, PrepSure was born.
Tea or coffee stains between crowded, lower anterior teeth are very common and can be hard to reach with scaler tips. My hygienists worked diligently to remove tiny traces of stains that were inevitably left, but found the task very difficult. This on-going problem inspired me to develop the ContacEZ Pink Strip.
When seating crowns, Interproximal Relief (IR) should be restored as it exists in natural dentition. IR is the passive contact or microscopic clearance between teeth when they are in rest position. In my experiments, this clearance cannot be properly detected with floss, because floss is too thick and an inaccurate measuring device.
A 93 year old female patient came in with tooth #25 very loose. X-rays showed #25 had no bony support and 23, 24 and 26 were also loose with minimum bony support. Splinting teeth 23, 24, 25, and 26 was recommended. To make the splinting solid, but to avoid leaving an empty center around the contact point, which weakens the splinting, the ContacEZ White Strip was used to spread composite masonry from facial to lingual.
Before taking crown impressions, any sharp edges on the proximal surfaces of the adjacent teeth are smoothened and polished with ContacEZ Restorative Strips. The proximal surfaces of adjacent teeth are also cleaned, contoured, and polished in anticipation of the new, properly fabricated crown. This procedure helps ensure the replacement crown fits perfectly and comfortably for the patient.