Talita Souza Dantas

Bacterial Adhesion and Surface Roughness for Different Clinical Techniques for Acrylic Polymethyl Methacrylate.

This study sought to assess the effect of different surface finishing and polishing protocols on the surface roughness and bacterial adhesion (S. sanguinis) to polymethyl methacrylates (PMMA). Fifty specimens were divided into 5 groups (n = 10) according to their fabrication method and surface finishing protocol: LP (3 : 1 ratio and laboratory polishing), NF (Nealon technique and finishing), NP (Nealon technique and manual polishing), MF (3 : 1 ratio and manual finishing), and MP (3 : 1 ratio and manual polishing). For each group, five specimens were submitted to bacterial adhesion tests and analyzed by scanning electron microscopy (SEM). Two additional specimens were subjected to surface topography analysis by SEM and the remaining three specimens were subjected to surface roughness measurements. Data were compared by one-way ANOVA. The mean bacterial counts were as follows: NF, 19.6 ± 3.05; MP, 5.36 ± 2.08; NP, 4.96 ± 1.93; MF, 7.36 ± 2.45; and LP, 1.56 ± 0.62 (CFU). The mean surface roughness values were as follows: NF, 3.23 ± 0.15; MP, 0.52 ± 0.05; NP, 0.60 ± 0.08; MF, 2.69 ± 0.12; and LP, 0.07 ± 0.02 (μm). A reduction in the surface roughness was observed to be directly related to a decrease in bacterial adhesion. It was verified that the laboratory processing of PMMA might decrease the surface roughness and consequently the adhesion of S. sanguinis to this material.

Microleakage at Different Implant-Abutment Connections Under Unloaded and Loaded Conditions

Purpose: This study evaluated the microleakage at different implant-abutment (I-A) connections under unloaded and loaded conditions. Materials and Methods: Forty implants, specially designed with an opening at the apex, were grouped according to the I-A and screw device: external hexagon implants with titanium (EH) or EH diamond-like carbon screws fixing the abutment; internal hexagon implants with titanium screws (IH); and Morse taper implants with solid (MT) or MT passing screws (MTps) abutments. The implants were fixed in a 2-compartment device, and toluidine blue solution (1.0 mg/mL) was placed at the I-A interface (upper compartment). The lower compartment was filled with purified water. Four implants of each group were loaded (50 N, 1.2 Hz) and after 50,000, 100,000, 200,000, and 300,000 cycles, aliquots were collected from the lower compartment for absorbance reading. Data were analyzed using analysis of variance for repeated measurements and Tukey (&agr; = 0.05). Results: Although microleakage increased over time in most of the groups, MTps group showed lower values when loaded (P < 0.05). The DLC on the EH screw did not prevent microleakage (P < 0.05). Conclusion: It can be concluded that MT connection is more effective to prevent microleakage.

Terapia periodontal de suporte: objetivos, procedimentos e intervalos

Os transtornos alimentares sao desvios do comportamento alimentar que podem levar a caquexia e a obesidade, entre outros problemas fisicos, os quais se destacam: a osteoporose, a desnutricao grave e a arritmia cardiaca. Dentre os principais tipos de transtornos alimentares existentes temos a anorexia e a bulimia nervosas. Essas duas patologias nas ultimas decadas tem tido incidencia aumentada de forma alarmante e vem representando na atualidade importante causa de mobimortalidade que requer intervencao terapeutica multiprofissional. Nesse contexto, o presente estudo tem por objetivo realizar revisao de literatura sobre a anorexia e bulimia nervosas, dando enfase ao papel da enfermagem. A literatura pesquisada permitiu a constatacao de que e de fundamental importância que o enfermeiro possua conhecimentos sobre esses transtornos, e que esse profissional esteja preparado para orientar e realizar acompanhamento clinico de qualidade e eficiencia para os doentes e seus familiares, com enfase na criacao de vinculos de confianca, apoio emocional e em orientacoes sobre a patologia e suas consequencias para o organismo.

Influence of Abutment Screw Design and Surface Coating on the Bending Flexural Strength of the Implant Set

The purpose of this study was to analyze the influence of the setting and the presence of solid lubricant on the abutment screw surface on the flexural strength of the joint implant/abutment/screw. Forty abutments were connected to external hex implants, divided into 4 groups (n = 10): FE (titanium alloy screw threaded in the extremity), LE (titanium alloy screw with solid lubricant and thread in the extremity), FT (titanium alloy screw with threaded in all its length), and LT (titanium alloy screw with solid lubricant and thread in all its length). Through the mechanical flexural test, the implant/abutment resistance was evaluated with load applied perpendicular to the long axis in a mechanical testing machine (EMIC) under a speed of 0.5 mm/min. Data were submitted to a statistics test, and results showed statistically significant differences between the FE group and the other groups, and the FE group showed the lowest values. The LE group showed greater values than the LT group, and the values were statistically significant. According to the methodology used, it can be concluded that within noncoated titanium screws, a screw threaded along its entire length provided greater rigidity to the implant set, while with the screw containing solid lubricant, the screw threaded in all its length provided less rigidity of the implant set than screws with the thread only on the end. Among screws with the same geometry, those with the solid lubricant are statistically higher than those which do not have threads just at the end, but those with threads along their entire length do not show statistically significant differences.

Clínica Integrada e Mudança Curricular: Desempenho Clínico na Perspectiva da Integralidade

Resumen pt: Introducao: Diante da necessidade estabelecida de mudanca na formacao profissional em funcao das novas demandas em saude, busca-se a construcao de um mod...

Retrieval technique for full-arch implant-supported fixed prosthesis: a clinical report.

In the event of the loss of an implant and to take advantage of the preexisting structures, a rescue procedure that allows continuous use of the original fixed restoration during the restoration of the tripod support at the implant level can be used. When nonphysiological occlusion forces are avoided, the success rate of this rescue procedure is very similar to any other rehabilitation made following a conventional protocol. Furthermore, the fact that the patient has already adapted to the prosthesis position and its vertical dimension results in easier functional adaptation in the postoperative period and, consequently, greater comfort.

Identificando Mecanismos de Estimulação da Integralidade da Atenção em Clínicas de Ensino Odontológico: o Papel da Mudança Curricular

Doencas cardiovasculares sao as principais causas de morbi-mortalidade nos paises industrializados. A atividade fisica, quando realizada sob orientacao, e uma maneira de melhorar a qualidade de vida. Para tanto, desenvolveu-se esta pesquisa de campo quantitativa descritiva transversal com objetivo de investigar a presenca de sinais/sintomas e fatores de risco cardiovasculares, pratica da caminhada, sinais vitais (PA/FC) e uso de medicacoes que tratam de hipertensao arterial. A amostra contituiu-se de 100 pessoas, frequentadoras de locais publicos de Arapongas-Pr. Dados mostram que muitas dessas pessoas nao sao orientadas profissionalmente para caminhar, sendo o enfermeiro, um profissional indicado para nortear tais atividades fisicas.