نتایج جستجو برای: berwald type connection
تعداد نتایج: 1428743 فیلتر نتایج به سال:
Influence of abutment and connection type on implant-abutment connection rigidity: an in vitro study
Objectives: To evaluate the effects of abutment material and connection type on implant-abutment rigidity. Methods: The study evaluated eighteen implants with three different types connections: external-hexagon, tri-channel, conical connection. Half were connected to titanium abutments, other half zirconia forming six groups (n=3). submitted 1,200,000 load cycles a force amplitude 90 N. During ...
Background and Aim: Maintaining the primary torque of the abutment screw is a common problem related to implant-supported restorations; a failure in this respect often leads to screw loosening. The abutment screw plays a critical role in the long-term stability of restorations. This study aimed to assess the effect of two abutment connection types with and without cyclic loading on removal torq...
the concepts of similarity and dissimilarity have been the interest of many researchers. basically, in the studies the similarity between two objects or phenomena, has been discussed. in this thesis, we consider the case when the resemblance or similarity among three objects or phenomena of a set, 3-similarity in our terminology, is desired. later we will extend our definitions and propos...
In 1991, Wei proved a duality theorem that established an interesting connection between the generalized Hamming weights of linear code and those its dual code. Wei’s has since been extensively studied from different perspectives extended to other settings. this paper, we re-examine various extensions, henceforth referred as Wei-type theorems, new Galois perspective. Our approach is based on ob...
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