AIM To evaluate the complications associated with pegging of porous hydroxyapatite orbital implants. METHODS Complications associated with pegging were retrospectively reviewed from the charts of 100 of 133 patients with hydroxyapatite implantation from 1993 to 2000. RESULTS 48 (48%) of the 100 hydroxyapatite implanted patients who had undergone pegging were found to have problems with thei...

purpose: to compare the complications of pegging between the polycarbonate peg system and the titanium peg system. method: complications associated with pegging (polycarbonate: bio-eye or titanium: dr-perry new p-k) were reviewed from the hospital records of 153 patients over 5 years. results: out of 153 cases, 96 (62.3%) were male and 57 (37.7%) were female. mean age was 27.7 yr (6-59 yr). in ...

purpose: to report the results of a wrapping technique for hydroxyapatite orbital implants by using mersilen mesh. methods: this study is prospective interventional case series conducted on records of 55 consecutive patients who received a mersilen mesh-wrapped ha orbital implant after enucleation or as a secondary procedure. we recorded results and potiential problem before and after pegging d...

PURPOSE Polycarbonate peg has been customarily used for pegging of hydroxyapatite for years. For better movement, tissue tolerance, and to decrease the complications of pegging, titanium peg system has been used. This study compares the two systems. METHODS Complications associated with pegging (polycarbonate: Bio-Eye or titanium: Dr-Perry new P-K) were retrospectively reviewed from the chart...

In graph pegging, we view each vertex of a graph as a hole into which a peg can be placed, with checker-like “pegging moves” allowed. Motivated by well-studied questions in graph pebbling, we introduce two pegging quantities. The pegging number (respectively, the optimal pegging number) of a graph is the minimum number of pegs such that for every (respectively, some) distribution of that many p...

In the game of pegging, each vertex of a graph is considered a hole into which a peg can be placed. A pegging move is performed by jumping one peg over another peg, and then removing the peg that has been jumped over from the graph. We define the pegging number as the smallest number of pegs needed to reach all the vertices in a graph no matter what the distribution. Similarly, the optimal-pegg...

Implementation and collapse of exchange rate pegging schemes are recurrent events. A currency crisis is often followed by an economic downturn while pegging often begets a boom. In this paper I study why a benevolent central bank should pursue a monetary policy that leads to those recurrent currency crises and subsequent periods of pegging. I show that the optimal policy induces a competitive e...

This paper examines the question of whether pegging exchange rates is a good strategy for emergingmarket countries. Although pegging the exchange rate provides a nominal anchor for emerging market countries that can help them to control inflation, the analysis in this paper does not provide support for this strategy for the conduct of monetary policy. First there are the usual criticisms of exc...