D. Pinchon

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BACKGROUND The aim was to compare the efficacy of the passive ultrasonic irrigation PUI and the Xp-endo Finisher (FKG-Dentaire, La-Chaux-de-Fonds, Switzerland) in removing the calcium hydroxide paste from root canals and from the apical third. MATERIAL AND METHODS Sixty-eight root canals of single-rooted teeth were shaped using the BT-Race files(More)
If k is any commutative ring, k[X,Y ] will denote the algebra of polynomials with coefficients in k in the indeterminates X,Y and Ak = Spec k[X,Y ] the affine plane over k. A kendomorphism f of Ak will be identified with its coordinate functions f = (f1, f2), where fi (i = 1, 2) belongs to k[X,Y ]. We define the Jacobian of f by Jac(f) = ∂f1 ∂X ∂f2 ∂Y − ∂f1(More)
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