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Influence of the milling cutter drill on implant placement accuracy in partiall...

Ferreira, Ana Raquel; Fonseca, Catarina Mendes; Correia, André; Fonseca, Patrícia

Partially guided implant surgery has emerged as a technique that enhances the precision of implant placement while maintaining surgical flexibility. This in vitro experimental study evaluated the influence of the milling cutter drill on the angular and linear deviations of implant placement in synthetic polyurethane bone models using a partially guided surgical protocol. Additionally, the effects of bone densit...


Comparative analysis of mechanized versus conventional polishing protocols for ...

Quezada, Margarida Martins; Fernandes, Carlos; Correia, André; Fonseca, Patrícia; Montero, Javier

Surface roughness is primarily determined by the inherent characteristics of a material, the specific polishing protocol and the manual operator’s dexterity. This research intends to conduct a comparative analysis between a conventional and mechanized polishing protocol concerning surface roughness and its impact on surface topography. Thirty samples were included in this in vitro study: six samples for each ty...


Assessment of maximum torque in implant-supported prostheses: a pilot laborator...

Kaffashian, Mahoor; Fazaeli, Seyedfarzad; Fialho, Joana; Araújo, Filipe; Fonseca, Patrícia; Correia, André

Background/Objectives: the precise application of torque during prosthetic screw tightening is essential to the long-term success and mechanical stability of implant-supported restorations. This study aimed to evaluate the influence of practitioner experience, glove material, screwdriver length, and hand moisture on the maximum torque value (MTV) generated during manual tightening. Methods: thirty participants,...


A different approach to analyzing the surface roughness of prosthetic dental ac...

Quezada, Margarida Martins; Fernandes, Carlos; Montero, Javier; Correia, André; Salgado, Helena; Fonseca, Patrícia

(1) Introduction: Apart from the polishing method, conventional or mechanized, the arithmetic mean roughness (Ra) is the most common metric to evaluate the surface roughness of denture base acrylic resins. An overview of the constraints related to this roughness parameter is highlighted in this study. This research introduces new parameters for accessing a functional analysis of surface roughness. (2) Materials...


Reabilitação de caso complexo com prótese removível e resinas compostas

Cruz, Karine Sommer; Bertoz, Alessio; Fidalgo-Pereira, Rita; Correia, André; Noites, Rita; Fonseca, Patrícia

Introdução: A perda de dimensão vertical de oclusão devido à falta de dentes e desgaste dentário requer tratamentos restauradores e reabilitadores combinados para assegurar uma estabilidade funcional e estética. Descrição do Caso Clínico: Mulher, 79 anos, apresenta prótese total superior e parcial removível inferior com falta de retenção e estabilidade. Exames clínico e imagiológico permitiram diagnosticar: má ...


The antimicrobial effect of the incorporation of inorganic substances into heat...

Lima, Mariana; Salgado, Helena; Correia, André; Fonseca, Patrícia

Introduction: Polymethylmethacrylate (PMMA) is the most widely used denture base material due to its favourable properties. Several studies have tested the incorporation of anti-infective agents into PMMA as a strategy to prevent biofilm growth on the denture surface. This systematic review aims to evaluate the efficacy of incorporating inorganic antimicrobial particles into denture base resins in preventing an...


Abordagem multidisciplinar de caso de desdentação severa e desgastes dentários

Bertoz, Alessio; Cruz, Karine Sommer; Fidalgo-Pereira, Rita; Correia, André; Noites, Rita; Fonseca, Patrícia

Introdução: O desgaste dentário severo, associado à ausência de vários elementos dentários, obriga a uma abordagem multidisciplinar, para garantir uma reabilitação funcional e estética. Descrição do Caso Clínico: Homem, 65 anos, avaliado em consulta de reabilitação oral com queixas funcionais e estéticas [ausência de vários dentes, desgaste dentário severo de 13-25, e prótese parcial fixa de 43-33 com falha cat...


Screw-retained surgical guide for implant placement

Marques, Tiago; Araújo, Filipe; Valentim, Bruno; Fonseca, Patrícia; Correia, André

Introduction: For patients with extended edentulous areas, with existing implants, and in need of additional implant placement, the use of the osseointegrated implants for guide fixation seems to be a logical alternative. Current options for the fabrication of surgical guides in this type of cases, involve creating surgical guides that are supported by the teeth, by the teeth and mucosa or retained by fixation ...


The success rate of the adhesive partial fixed prosthesis after five years: a s...

Santos, Maria Catarina; Azevedo, Luis; Fonseca, Patrícia; Viana, Pedro Couto; Araújo, Filipe; Villarinho, Eduardo; Fernandes, Gustavo Vicentis Oliveira

Objective: Evaluation of the success and/or survival rates of resin-bonded fixed partial dentures (RBFPDs) reported in the scientific literature with a minimum average observation time of five years. Materials and Methods: Search conducted in Pubmed, Web of Science, and Cochrane databases in free-text format and MESH terms, until May 2021. The random-effects model was used for the estimated survival rate, perce...



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