نتایج جستجو برای: retainer
تعداد نتایج: 486 فیلتر نتایج به سال:
Normal 0 false false false EN-US X-NONE AR-SA The theory of designing partial prostheses with rotational path of insertion has been debated for years but most dentists do not consider this treatment method. In conventional partial prostheses, the rests have a single path of insertion while in rotational path of insertion, first the center of rotati...
The purpose of this study was to investigate the effect on the vibratory characteristics of a cast hollow obturator prosthesis retainer when varying its bulb height. Bulb parts with high (H), middle (M), and low (L) lateral walls were prepared. A Vibration Generator was used to excite the three obturators, while a Laser-Doppler Vibrometer was employed to detect the vibrations at specified measu...
UNLABELLED The need for long-term retention to prevent post-treatment tooth movement is now widely accepted by orthodontists. This may be achieved with removable retainers or permanent bonded retainers. This article aims to provide simple guidance for the dentist on how to maintain and repair both removable and fixed retainers. CLINICAL RELEVANCE The general dental practitioner is more likely...
Form perception with the tongue was studied with a 49-point electrotactile array. Five sighted adult human subjects (3M/2F) each received 4 blocks of 12 tactile patterns, approximations of circles, squares, and vertex-up equilateral triangles, sized to 4x4, 5x5, 6x6, and 7x7 electrode arrays. Perception with electrical stimulation of the tongue is better than with fingertip electrotactile stimu...
We rigorously model the option exercise and portfolio choice problem of optimistic executives. Our approach extends existing theoretical research by endogenizing both the executive’s investment in company stock and the timing of option exercise. We show that (i) option exercise is delayed by executive optimism and (ii) optimistic executives should not hold options beyond the optimal earlyexerci...
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