Objectives: The purpose of this in vitro study was to evaluate the microleakage of cervical cavities prepared by Er:YAG laser or high-speed hand piece and bur. Methods: This in vitro experimental study was performed on 40 sound permanent third molar teeth randomly assigned into two equal groups (n=20). In the first group, high-speed hand piece and bur and in the second group Er:YAG la...

background: spine of an adult is made up of five areas that include 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, sacrum and finally coccyx. selecting appropriate assumptions for modeling and biological analysis of the spine components has a significant impact on the accuracy of results in biomechanical simulation for different modes. methods: in the present study, biomechani...

in a fellow-eye-controlled trial, we compared the posterior capsule opacification (pco) rates of single-piece (sa60at) and three-piece (ma60ac) hydrophobic acrylic intraocular lenses (iol) in 54 pair-matched eyes of 27 age-related cataract patients who consecutively underwent bilateral (4-8 weeks apart) phacoemulsification horizontal chopping performed through a capsulorrhexis of approximately ...

I n the past year or so, I have devoted a lot of time to compiling manuscripts that incorporate outputs from genome-wide screens or profiles, which has required a lot of manual inspection of database entries. While those who work in computational biology may groan and advise me to let data-mining tools do the work—and do it more accurately, comprehensively, and objectively—I feel I have learned...

Gingival esthetics around natural teeth is based upon a constant vertical dimension of healthy periodontal soft tissues, the Biologic Width. When placing endosseous implants, however, several factors influence periimplant soft and crestal hard tissue reactions, which are not well understood as of today. Therefore, the purpose of this study was to histometrically examine periimplant soft tissue ...