Results 1 to 10 of about 1,329,154 (252)
Applied Sciences, 2021 In this prospective clinical trial we observed the 2-year clinical performance of posterior tooth-supported multi-unit fixed dental prostheses (FDP) fabricated from zirconia with monolithic occlusal surfaces.
Elisabeth Pahncke +5 more
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Mapping of proximal enamel thickness in permanent teeth
Brazilian Journal of Oral Sciences, 2015 Aim: Knowledge of enamel thickness is relevant to perform stripping during orthodontic treatment. Thus, proximal enamel measurements of human permanent teeth were compared in this study.
Flávio Vellini Ferreira +3 more
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Boolean Functions and Permanents of Sylvester Hadamard Matrices
Mathematics, 2021 One of the fastest known general techniques for computing permanents is Ryser’s formula. On this note, we show that this formula over Sylvester Hadamard matrices of order 2m, Hm, can be carried out by enumerating m-variable Boolean functions with an ...
José Andrés Armario
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The Dittert's function on a set of nonnegative matrices
International Journal of Mathematics and Mathematical Sciences, 1990 Let Kn denote the set of all n×n nonnegative matrices with entry sum n. For X∈Kn with row sum vector (r1,…,rn), column sum vector (c1,…,cn), Let ϕ(X)=∏iri+∏jcj−perX. Dittert's conjecture asserts that ϕ(X)≤2−n!/nn for all X∈Kn with equality iff X=[1/n]n×n.
Suk Geun Hwang, Mun-Gu Sohn, Si-Ju Kim
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Per-Spectral Characterizations Of Some Bipartite Graphs
Discussiones Mathematicae Graph Theory, 2017 A graph is said to be characterized by its permanental spectrum if there is no other non-isomorphic graph with the same permanental spectrum. In this paper, we investigate when a complete bipartite graph Kp,p with some edges deleted is determined by its ...
Wu Tingzeng, Zhang Heping
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Bipartite Graphs Associated with Pell, Mersenne and Perrin Numbers
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019 In this paper, we consider the relationships between the numbers of perfect matchings (1-factors) of bipartite graphs and Pell, Mersenne and Perrin Numbers.
Öteleş Ahmet
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Role of reinforcement methods in retention of composite restorations of primary anterior teeth
Journal of Dental School, 2019 Objectives This study aimed to evaluate the retention of composite restorations of primary anterior teeth reinforced with composite posts, glass fiber posts, para-pulpal pins with composite posts, and para-pulpal pins alone.
Ghassem Ansari +3 more
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Acta Odontologica ScandinavicaObjective: In vitro leakage studies suggest that temporary restorations only provide a short-term seal. However, it remains unclear whether the clinical outcome is impacted by the time elapsing between the completion of a root canal treatment (RCT) and ...
Sara Olsson +4 more
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Energy Reports, 2023 Leakage flux magnitude and pattern greatly affect transformer short-circuit resistance. In this paper, finite element calculations and experimental measurements is used to calculate the leakage magnetic field of a transformer.
Tiannan Meng +5 more
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Effect of extraction of permanent first molars on the development and eruption of third molars [PDF]
Journal of Oral Health and Oral Epidemiology, 2018 BACKGROUND AND AIM: It is required in many young patients that permanent first molars (PFMs) be extracted due to poor prognosis. This study investigates whether the extraction of such teeth is effective on the development of third molars and even their ...
Raziyeh Shojaeipoor +3 more
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