نتایج جستجو برای: retentive hole
تعداد نتایج: 62176 فیلتر نتایج به سال:
A combination of a simple and universal crop growth simulator (SUCROS) of van Keulen et al. [van Keulen, H., Penning de Vries, F.W.T., Drees, E.M., 1982. A summary model for crop growth. In: Penning de Vries, F.W.T., Laar van, H.H. (Eds.), Simulation of Plant Growth and Crop Production. Simulation Monographs, Pudoc, Wageningen] with a water balance model (WBM) of Arora et al. [Arora, V.K., Prih...
STATEMENT OF PROBLEM The specific degree of retention for overdenture attachments is unknown in relation to design, location, and alignment to supporting dental implants. PURPOSE The purpose of this study was to evaluate the initial retention characteristics of 5 implant maxillary overdenture designs under in vitro dislodging forces. MATERIAL AND METHODS A simulated edentulous maxilla was f...
PURPOSE This study aimed to compare the difference in mechanical behavior between two types of female-part clips of the Stress-Free Implant Bar (SFI-Bar) system during simulation of insertion-removal cycles. MATERIALS AND METHODS A total of 10 samples simulating SFI-Bar-attachment-retained implant overdentures were fabricated and randomly divided into two groups (n = 5). One group used E-clip...
In this study, five microcrystalline cellulose (MCC) grades were physically characterized and their extrusion-spheronization behaviours were characterized in terms of water requirements and pellet shape profiles. It was found that the MCC grades differed significantly in the physical properties investigated. Physical properties of MCC were found to influence the water requirement for extrusion-...
statement of the problem: implant-retained overdenture can improve the stability of dentures and prevent bone loss. overdenture-wearing patients need special hygiene care. purpose: the aim of this study was to evaluate the effects of various denture cleansers on the retention of dio orange o-rings. method and materials : in this experimental study, 40 dio orange o-rings were divided into 4 grou...
The aim of the present study was to design and fabricate a maxillary posterior fixed partial denture (FPD) made of a type 4 gold alloy and an indirect composite. Unlike the conventional framework design of a resin veneered restoration, cut-back was extended approximately 1/4 to 1/3 width in the occlusal table of the buccal cusp. Multiple retentive beads 150-200 mum in diameter were placed on th...
Replicated the efficacy of a short-term, combined medical and behavioral intervention protocol for retentive encopresis. Fifty-nine children who had failed standard medical management for retentive encopresis and their parents participated in six 1-hour group treatment sessions. Treatment protocol combined the medical management strategies of enema clean out, increasing dietary fiber, and daily...
سابقه و هدف : یکی از مهمترین معایب آکریل متیل متاکریلات، انقباض حاصل از پلیمریزاسیون است که به اعوجاج ( distortion ) پروتز کامل پخته شده میانجامد. یکی از روشهای معرفی شده برای جلوگـیری از این distortion ، روش استفاده از retentive hole و anchorage به داخل مسترکست است. هدف از انجام مطالعه حاضر، بررسی اثر تعداد و محل این سوراخ ها بر میزان کاهش تغییر شکل دنچر بود. مواد و روشها : مطالعه تجربی حا...
The purpose of this investigation was to prepare a gastro retentive drug delivery system of famotidine tablets. Floating tablets of famotidine were prepared employing lipid solid dispersion spray drying technique with gelucire 50/13 and compritol 888 along with HPMC K100M, lactose, sodium bicarbonate and citric acid. The floating tablets were evaluated for uniformity of weight, hardness, friabi...
The demography of anchovy fishes in the Gulf of Biscay seems to be related to the presence of socalled “retentive” hydrodynamical structures, that keep fish eggs and larvae in a favorable environment. To verify this hypothesis, an automatic detection tool is needed to process a database of thousands of hydrodynamical maps to be compared with biologists observations and fisheries statistics. The...
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