by Pioon Laser May 31, 2021 The classical Periodontal treatment protocol is generally divided into 4 stages： 1.Initial phase (or cleaning phase) 2.Assessment phase 3.Surgical phase 4.Maintenance phase As periodontitis usually occurs in the context of untreated periodontal disease, it is essential to carry out periodontal treatment of the whole

published May 31st 2016, 10:30 am, by Cass R Sunstein   (Bloomberg View) — Thirty-nine years ago, on May 25, 1977, a movie was released with a somewhat ridiculous name: “Star Wars.” (It’s now called “Episode IV: A New Hope.”) Almost no one thought that it would do well, and