A team of Israeli and German scientists from Ben-Gurion University of the Negev (BGU) and the Max Planck Institute of Colloids and Interfaces have found an enamel-like layer in the mandibles of freshwater crayfish, according to an article in Nature Communications titled “Enamel-like Apatite Crown Covering Amorphous Mineral in a Crayfish Mandible.”
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Recently there has been an effort to reintroduce the "prepless" or "minimal preparation" veneer. The primary driving force has been a marketing effort suggesting that patients' smiles can be drastically improved without using the "dental drill, shots or removal of healthy tooth structure." Consequently, dentists often have been forced to utilize a prepless veneer at the request of their patients, despite the fact that the treatment might be contraindicated. Another important compromise is that many clinicians are unaware of (or unfamiliar with) indications in which eliminating teeth preparation may be an option.
Dr. Phil Brown and Steve Gerber discuss the evolution of cements, the superiority of resin cements and the various uses of PermaFlo DC.