Results 151 to 160 of about 4,654 (253)

Methods for 3D evaluation and quantification of gingival recessions and gingival margin changes: Advancements from conventional techniques

open access: yesPeriodontology 2000, EarlyView.
Abstract In an era of increasing life expectancy and growing patient demands towards lifelong natural tooth retention, accurate assessment of gingival recessions is crucial for diagnosing periodontal diseases, planning preventive or restorative interventions, and evaluating their outcomes.
Nikolaos Gkantidis   +4 more
wiley   +1 more source

Perron-Frobenius and Krein-Rutman theorems for tangentially positive operators

open access: yesOpen Mathematics, 2012
Kanigowski Adam, Kryszewski Wojciech
doaj   +1 more source

Peri‐implantitis—Is it mainly a clinician‐initiated complication of implant therapy?

open access: yesPeriodontology 2000, EarlyView.
Abstract Aim The high prevalence of peri‐implantitis is concerning, with a growing consensus that the majority of cases are complications initiated by clinician‐related errors rather than classic pathology. A primary predisposing factor for peri‐implantitis is exposure of the micro‐rough implant surfaces to the peri‐implant sulcus after treatment ...
Stephen T. Chen   +9 more
wiley   +1 more source

On the tangent cone algorithm

open access: yes, 1993
Contains fulltext : 256998.pdf (Publisher’s version ) (Open Access)
openaire   +1 more source

Rational points on even‐dimensional Fermat cubics

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract We show that even‐dimensional Fermat cubic hypersurfaces are rational over any field of characteristic not equal to three, by constructing explicit rational parameterizations with polynomials of low degree. As a byproduct of our rationality constructions, we obtain estimates for the number of their rational points over a number field and ...
Alex Massarenti
wiley   +1 more source

K\"ahler-Ricci Tangent Flows are Infinitesimally Algebraic [PDF]

open access: yes
We show that any tangent cone of a singular shrinking K\"ahler-Ricci soliton is a normal affine algebraic variety. Moreover, the regular set of such a tangent cone in the metric sense coincides with the regular set in the algebraic sense.
Hallgren, Max
core   +1 more source

Optimization problems and mathematical analysis of optimal values in Orlicz spaces

open access: yesElectronic Journal of Differential Equations, 2021
Zahra Donyari   +2 more
doaj  

Influence of Metal Artifact Reduction Algorithms on the Detection of Inferior Alveolar Canal Perforations by Zirconia Implants in CBCT Images

open access: yesClinical and Experimental Dental Research, Volume 12, Issue 4, August 2026.
ABSTRACT Introduction This study aims to evaluate the efficacy of a metal artifact reduction (MAR) algorithm in detecting contact between zirconia implants and inferior alveolar canal. Materials and Methods Twelve zirconia implants were placed in dry human mandibles using surgical guides, in two conditions: 1 mm above and within the canal.
Parisa Soltani   +11 more
wiley   +1 more source

Linear Toroidal‐Inertial Waves on A Differentially Rotating Sphere with Application to Helioseismology: Modeling, Forward and Inverse Problems

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 12, Page 14122-14148, August 2026.
ABSTRACT This paper develops a mathematical framework for interpreting observations of solar inertial waves in an idealized setting. Under the assumption of purely toroidal linear waves on the sphere, the stream function of the flow satisfies a fourth‐order scalar equation.
Tram Thi Ngoc Nguyen   +3 more
wiley   +1 more source

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