Influence of Dual Heat Treatment on the Metallurgy and Mechanical Behaviour of Diamond-Like Carbon-Coated NiTi Rotary Systems: A Multimethod Investigation. [PDF]
Int Endod JABSTRACT Aim To investigate how the application of dual heat treatment during the manufacturing process influences the mechanical performance (flexibility, cyclic fatigue resistance, torsional strength, bending, buckling and cutting efficiency) of rotary nickel‐titanium endodontic instruments. Methodology Rainbow One (n = 58) and Rainbow Ultra (n = 58)
Silva EJNL +5 more
europepmc +2 more sources
Characterisation of the Mesial Root and Middle Mesial Canal Morphology in Mandibular First Molars: An Ex Vivo Micro-CT Study. [PDF]
Aust Endod JABSTRACT This ex vivo study characterised the mesial root morphology of mandibular first molars with a middle mesial canal (MMC) using micro‐CT. Among 469 scanned molars, 42 (8.96%) presented an MMC. Morphological parameters analysed included canal configuration, chamber orifice features, dentine thickness, isthmus type, and aspect ratio.
Rodrigues Dos Santos N +3 more
europepmc +2 more sources
Mechanical and Metallurgical In Vitro Evaluation of Electropolished Versus Non-Electropolished Rotary and Reciprocating Instruments. [PDF]
Int Endod JABSTRACT Aim To evaluate the effect of electropolishing on the mechanical properties of One RECI and One Curve mini nickel‐titanium (NiTi) instruments by comparing electropolished and non‐electropolished versions of each instrument type. Methodology Electropolished and non‐electropolished One RECI (reciprocating) and One Curve mini (rotary) NiTi ...
Vieira VTL +9 more
europepmc +2 more sources
Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial, 2022 Objetivos: Avaliar os conhecimentos, práticas e atitudes dos médicos dentistas e higienistas orais relativamente ao cancro oral em Portugal. Métodos: Os dados foram recolhidos entre janeiro e março de 2021, através de questionários online, cujo ...
Carolina Pinto +4 more
doaj +1 more source
Peri-Implant Crevicular Fluid Analysis by Mid-Infrared Spectroscopy in Peri-Implantitis-A Pilot Study. [PDF]
Clin Oral Implants ResABSTRACT Objectives This study aimed to assess biochemical differences in peri‐implant crevicular fluid (PICF) using ATR‐FTIR spectroscopy and multivariate analysis, through a between‐participant comparison of healthy and peri‐implantitis (PI) sites, and a within‐participant comparison of PI‐PICF and GCF from contralateral periodontal healthy teeth ...
Maligno F, Páscoa RNMJ, Gomes PS.
europepmc +2 more sources
Radiographic evaluation of the prevalence of dental anomalies of number [PDF]
Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial, 2023 Objectives: This study aims to determine the prevalence of tooth agenesis and supernumerary teeth and characterize both anomalies in a Portuguese pediatric population.
Gonçalo D. Costa, Pedro Mesquita
doaj +1 more source
Diamond-like carbon coating enhances mechanical performance of NiTi rotary instruments: A multimethod analysis. [PDF]
Int Endod JAbstract Aim This study aimed to evaluate the impact of diamond‐like carbon (DLC) surface treatment on the mechanical properties of nickel–titanium (NiTi) rotary instruments. Methodology One hundred and ten nickel–titanium instruments with a size of 25/.06 and a length of 25 mm, both with (n = 55) and without (n = 55) a DLC coating were selected and ...
Silva EJNL +6 more
europepmc +2 more sources
Oral health status and oral habits: A study on 33 rare diseases [PDF]
Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia MaxilofacialObjectives: To analyze the patient profile and characterize the oral health status, oral habits, and daily oral hygiene difficulties of individuals with rare diseases. Methods: Data were collected from records of the clinic for people with disabilities
Diana Oliveira Nunes +5 more
doaj +1 more source
Assessing the fatigue resistance of NiTi instruments: A DSC-based approach to understanding temperature effects. [PDF]
Int Endod JAbstract Aim This study aims to demonstrate that phase transformation analysis, assessed via differential scanning calorimetry (DSC), offers a more comprehensive understanding of NiTi instruments' mechanical behaviour than traditional fixed‐temperature fatigue testing by evaluating phase transformation temperatures and their impact on cyclic fatigue ...
Silva EJNL +3 more
europepmc +2 more sources
Cárie dentária e gravidez [PDF]
, 1995 Dissertação de Doutoramento em Medicina Dentária, área de especialização em Odontopediatria e Ortodontia, apresentada à Faculdade de Medicina Dentária da Universidade do ...
Jorge, Acácio Eduardo Soares Couto
core +1 more source