0000000000588209

AUTHOR

A. Barjau-escribano

showing 4 related works from this author

Influence of material and diameter of pre-fabricated posts on maxillary central incisors restored with crown.

2009

Summary  Numerous research works have studied the effect of post-design parameters on the mechanical behaviour of restored teeth without reaching any clear conclusions. Previous works by the authors ascertained the effect of material and post-dimensions for non-crowned restored teeth. The aim of this work was to study the effect of post-material and diameter for crowned teeth. First, an experimental fracture strength test was performed on eighteen extracted human maxillary central incisors. Teeth were decoronated, treated endodontically and restored (nine with glass fibre posts and nine with stainless steel posts). Several post-diameters were used. The final crown restoration was carried ou…

Dental Stress Analysisinfluence of post-materialMaterials sciencemedicine.medical_treatmentGlass fiberFinite Element AnalysisDentistryCrown (dentistry)Dental Materialsstomatognathic systemFlexural strengthstress distributionMaterials TestingmedicineMaxillaHumansMaxillary central incisorDental Restoration PermanentGeneral Dentistryinfluence of post-diameterbusiness.industrybiomechanical performanceStress distributionIncisorstomatognathic diseasesDental Prosthesis DesignFracture (geology)pre-fabricated intra-radicular postsinfluence of crownFinite element techniqueGlassbusinessPost and Core TechniqueJournal of oral rehabilitation
researchProduct

Influence of prefabricated post material on restored teeth: fracture strength and stress distribution.

2006

This work studied how prefabricated intraradicular post material affects the mechanical performance of restored teeth. The effect of using two different materials (glass fiber and stainless steel) with significantly different elastic moduli was studied.A combined theoretical and experimental method was used: first, an experimental fracture strength test was performed on 60 extracted human maxillary central incisors. The teeth were decoronated, treated endodontically and restored, 30 with glass fiber posts and 30 with stainless steel posts. The data were recorded and the results compared using an ANOVA test. Then, the finite element technique was used to develop a model of the restored tooth…

Dental Stress AnalysisMaterials scienceFinite Element AnalysisDentistryMaterials testingModels BiologicalStress (mechanics)Dental MaterialsTooth Fracturesstomatognathic systemFlexural strengthMaterials TestingDentinmedicineHumansComputer SimulationGeneral DentistryElastic modulusTooth Nonvitalbusiness.industryStress distributionElasticity (physics)Stainless SteelElasticityRoot Canal Therapymedicine.anatomical_structureDental Prosthesis DesignGlassStress MechanicalbusinessToothDental AlloysPost and Core TechniqueOperative dentistry
researchProduct

Influence of prefabricated post dimensions on restored maxillary central incisors

2007

summary  The aim of this study was to test the following hypothesis: biomechanical performance (fracture strength and stress distribution) of restored teeth is less sensitive to post diameter and post length when using glass fibre posts than when using stainless steel posts. First, an experimental fracture strength test was performed on 80 extracted human maxillary central incisors. Teeth were decoronated, treated endodontically and restored (40 with glass fibre posts and 40 with stainless steel posts), and the length and diameter of the posts varied uniformly. Failure loads were recorded and results were compared using an ancova analysis. Secondly, the finite element technique was used to …

Dental Stress AnalysisMaterials sciencebusiness.industryFinite Element AnalysisGlass fiberDentistryModels TheoreticalStress distributionStainless SteelModels DentalIncisorDental MaterialsDental Prosthesis DesignFlexural strengthMaterials TestingHumansComputer SimulationMaxillary central incisorDental Restoration FailureGlassFinite element techniquebusinessGeneral DentistryPost and Core TechniqueJournal of Oral Rehabilitation
researchProduct

Experimental strength of restorations with fibre posts at different stages, with and without using a simulated ligament

2011

The aim of this study was to analyse the strength and failure mode of teeth restored with fibre posts under retention and flexural-compressive loads at different stages of the restoration and to analyse whether including a simulated ligament in the experimental setup has any effect on the strength or the failure mode. Thirty human maxillary central incisors were distributed in three different groups to be restored with simulation of different restoration stages (1: only post, 2: post and core, 3: post-core and crown), using Rebilda fibre posts. The specimens were inserted in resin blocks and loaded by means of a universal testing machine until failure under tension (stage 1) and 50o flexion…

OrthodonticsDental Restoration FailureUniversal testing machineMaterials sciencebusiness.industrymedicine.medical_treatmentDentistryPost and coreCrown (dentistry)medicine.anatomical_structurestomatognathic systemCoronal planeLigamentmedicineMaxillary central incisorbusinessGeneral DentistryFailure mode and effects analysisJournal of Oral Rehabilitation
researchProduct