Some observations to the plaque accumulation on metal crowns

The effect of polishing technics on surface smoothness and plaque accumulation on stainless steel crowns.

The purpose of tins study was to evaluate the surface produced when stainless steel crowns were polished by several technics and to compare the ability of the various polished surfaces to resist bacterial plaque accumulation. Twenty-one Unitek and twenty-one Ion primary molar stainless steel crowns were divided into several groups containing three crowns each. Each group was polished with a dif...

extensions of some polynomial inequalities to the polar derivative

توسیع تعدادی از نامساوی های چند جمله ای در مشتق قطبی

Some observations on the feeding of the guinea pig

Primary tooth metal crowns.

The preformed metal crown was first introduced in 1950, made of stainless steel it was referred to by an acronym of SSC. However soon the metal used was changed to nickel-chromium and these days it is best referred to as a preformed metal crown (PMC). I first encountered them in 1965 as a travelling extern in paedodontics in the backwoods of British Columbia (Canada). Not having been taught the...

Some Observations on the Simplex

We discuss some properties of the set of simplices in E n