OBJECTIVES To study occlusal wear of anterior teeth in orthodontic patients retained with different retainers until 5 years post-treatment, and to investigate whether type of retention influences occlusal wear. MATERIAL AND METHODS Orthodontic patients (n=222), aged 15 years maximally at the start of treatment, were followed until 5 years post-treatment. In the maxilla, a retainer bonded on a...

OBJECTIVE Different fixation techniques have been used for stabilization of autotransplanted teeth. Because rigid or extended fixation periods can cause complications such as ankylosis and disturbances of pulpal revascularization, our aim was to evaluate an alternative technique, a removable splint, for improving the success rate of autotransplanted molar teeth. STUDY DESIGN In 44 patients, (...

Abstract Oil-impregnated porous polyimide (iPPI) materials are usually used as retainer for bearings. In these bearings, balls and rings, retainers two different kinds of contact. this paper, the friction wear properties iPPI were investigated using steel (disc)—steel (ball)—iPPI (pin) double-contact test rig simulating actual contact in The results show that compared with iPPI—steel single con...

David W Mudge ([email protected]) Ken-Soon Tan ([email protected]) Rhianna Miles ([email protected]) David W Johnson ([email protected]) Scott B Campbell ([email protected]) Carmel M Hawley ([email protected]) Nicole M Isbel ([email protected]) Carolyn L Van Eps ([email protected]) David L N...

Conference reports: Workshop on Emergence of Spacetime, by Olaf Dreyer . . . . . . . . . . . . 15 Quantum gravity subprogram at the Isaac Newton Institute, by Jorma Louko 17 Global problems in Math Relativity at the Newton Institute, by Jim Isenberg 18 Loops ’05, by Thomas Thiemann . . . . . . . . . . . . . . . . . . . . . . . 20 Numrel 2005, by Scott Hawley and Richard Matzner . . . . . . . . ...