Objectives: Evaluating the fracture resistance and failure mode of human maxillary premolars restored with two ceramic onlay materials prepared preparation designs. Materials methods: A total 40 extracted, were selected divided into groups according to design; Group A: MOD cavity anatomical reduction functional cusp F: flat cusp. Each group was subgroups material construction; Subgroup S: using...

For an arbitrary even genus n we show that the subspace of Siegel cusp forms of weight k + n/2 generated by Ikeda lifts of elliptic cusp forms of weight 2k can be characterized by certain linear relations among Fourier coefficients. This generatizes the work of Kohnen and Kojima. We investigate the analogous subspaces of hermitian and quaternionic cusp forms. Introduction Ikeda [7] constructed ...

In this paper, we prove the boundedness of foliated surfaces $$(X,{{\mathscr {F}}})$$ which are minimal partial du Val resolutions canonical models $$(X_c,{{\mathscr {F}}}_c)$$ general type. For applications, show non-cusp singularities on type and effective generation complement cusp singularities.

Received: 6 Sept 2012 Accepted: 21 May 2013 Abstract Background and Aim: Tooth fracture is a common complication following MOD restorations.This study sought to assess the effect of different cusp coverage patterns on fracture resistance of maxillary premolar teeth in MOD composite restorations. Materials and Methods: In this invitro experimental study, 40human maxillary sound premolar teeth we...

OBJECTIVE Tooth fracture is a common dental problem. By extension of cavity dimensions, the remaining tooth structure weakens and occlusal forces may cause tooth fracture. The aim of this study was to evaluate and compare the fracture resistance of teeth restored with direct and indirect composite restorations. MATERIALS AND METHODS Sixty-five sound maxillary premolar teeth were chosen and ra...

An integrated experimental and theoretical approach is proposed for the evaluation of stress within a natural tooth during bruxing. A physical model was developed that used strain gauges bonded to the buccal and lingual heights of contour of extracted, intact maxillary premolar teeth for the validation of a two-dimensional finite element model of a natural, intact maxillary premolar tooth. Resu...

A 34 year old man presented with an inferior non-Q-wave myocardial infarction. Echocardiography showed a bicuspid aortic valve with aortic outflow obstruction. Left coronary cusp morphology was normal but the right coronary cusp was grossly distorted and replaced by a mobile echodense mass encroaching upon the aortic valve orifice. The aortic valve was replaced and pathological analysis of the ...

The aim of this study was to analyze the stresses that develop by oblique and vertical forces in endodontically treated maxillary second premolars that were restored with resin composite. Additionally, in our study the effects of the different restorative approaches and use of different base materials on stress formation were analyzed using three-dimensional finite element stress analysis. For ...

The large-scale and continuous monitoring of the ionospheric cusp region offered by HF radars has been exploited in order to examine the statistical location and motion of the equatorward edge of the HF radar cusp as a function of the upstream IMF BZ component. Although a considerable scatter is seen, both parameters have a clear influence from the north-south component of the IMF. Excellent ag...

The stability of slotted ALOHA systems with various types of capture phenomena and multiple packet reception capability is discussed in conjunction with the cusp catastrophe. The slotted ALOHA systems considered are classified into; 1) single packet reception with geometric capture, 2) independent multiple packet reception with geometric capture, 3) single packet reception with M -out-of-N capt...