background and aims: one of the main goals of standard orthodontic treatment is having the roots of teeth adjacent to extraction sites parallel to each other. the purpose of this study was to compare standard edgewise and preadjusted straight wire (mbt) methods in achieving this goal. materials and methods: for comparing root parallelism, 228 maxillary quadrants and 225 mandibular quadrants of ...

this paper presents characterizations of m-fuzzifying matroids bymeans of two kinds of fuzzy operators, called m-fuzzifying derived operatorsand m-fuzzifying difference derived operators.

Background:  Few clinical trials have studied the functional and cosmetic outcomes of different closure tech- niques of surgical incisions. Skin wound and incision closure methods may influence the healing process and cos- metic outcome. The present study aims at comparing three different suture techniques of skin closure. Methods: In a clinical trial, sixty patients with anterior cruciate liga...

: Sternal closure after median sternotomy traditionally uses a stainless steel wire cerclage. wires are placed through or around the sternum, and ends twisted together to bring sternum back together. Complications of this technique include sternal instability, dehiscence, non-union, increased pain. Compared traditional cerclage, Figure 8 FlatWire Closure System has been demonstrated be stronger...