The effect of CO 2 laser irradiation on failed implant surfaces

The aim of this investigation was to evaluate the cleaning effect of CO 2 on surface topography and composition of failed dental implant surfaces. Ten failed dental implants were retrieved from nine patients (mean age, 46.33 ± 5.81 years) as a result of early or late failure. The implants were divided into two parts: one side of the implant was irradiated with a CO 2 laser (test side), while the other side did not receive irradiation (control side). The CO 2 laser was operated at 1.2 W in a continuous wave for 40 seconds (40 J energy). The handpiece of the CO 2 laser was kept at a distance of 30 mm from the implant surface, resulting in a spot area of 0.031415 cm 2 (38.20 W/cm 2; 1559 J/cm 2) in scanning mode (cervical-apical). One unused dental implant was used as a negative control for both groups. All implant surfaces were examined by scanning electron mi croscopy (SEM) and energy-dispersive spectrometer x-ray (EDS) for element analysis. SEM showed that the surface of the test sides consisted of different degrees of organic residues, appearing mainly as dark stains similar to those observed on the control sides. None of the test surfaces presented alterations such as crater-like alterations, lava-like layers, or melting compared with the nonirradiated surfaces. Foreign elements such as carbon, oxygen, sodium, calcium, and aluminum were detected on both sides. These results suggest that CO 2 laser irradiation does not modify the implant surface, although the cleaning effect was not satisfactory.

Transtorno bipolar do humor e gênero

Although the bipolar disorder (BD) occurs almost with the same frequency in both genders, the phenomenology and the outcome of the illness differ between them. Nevertheless, there is evidence that women with BD show, more than men, delayed beginning, especially in their fifth decade, more rapid cycling outcome, more depressive episodes, more dysphoric mania, more mixed states and more BD type II. Even so, the findings are not always consistent. Although the risk of comorbidities in BD includes, for both the sorts, excessive alcoholic consumption and drugs, bipolar men would have greater probability of being alcohol dependent, of not seeking treatment and of committing suicide. Suggested hypotheses to explain such differences vary from those centered in cultural or psychological aspects to those that focus on the steroids hormones, and other hormones such as cortisol, thyroid hormones and even on the cerebral anatomy. The reproductive cycle (menstrual cycle, pregnancy and menopause) influences on the BD phenomenology and its relevance to the therapeutical options in the treatment of the BD in women are presented in the last part of this review. Further investigations must to be done in order to clarify this controversy. However, up to now the data indicate that estrogen therapy is not to be primarily indicated to prevent depression, Alzheimer disease or cognition impairment.

Pressão intra-ocular, condições endoteliais e prostaglandina E2 no humor aquoso de cães com catarata senil madura ou hipermatura

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Alterações clínicas, protéicas do humor aquoso, sorológicas e histopatológicas em olhos de cães (Canis familiaris) (Linnaeus, 1758), infectados experimentalmente, por via conjuntival, com Leishmania (Leishmania) chagasi (Cunha & Chagas, 1937)

Pós-graduação em Cirurgia Veterinária - FCAV

As formas do humor. Copi: um caso argentino

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Revista Careta: um estudo sobre humor visual no Estado Novo (1937-1945)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Interferência dos fatores externos sobre os estados de humor em jovens atletas de voleibol

Pós-graduação em Ciências da Motricidade - IBRC

Humor em poemas: um estudo do cômico em Carlos Drummond de Andrade

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Humor e sátira: a outra face de Edgar Allan Poe

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Um mundo dilacerado entre o riso e a ruína: o humor na literatura regionalista brasileira

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Homo Risibilis: ensaio sobre o processo de construção do humor nas obras infantis de Monteiro Lobato

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O humor nas “balas de estalo”

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Humor: alguns mecanismos lingüísticos

Quer-se pôr em evidência algumas possibilidades que a língua oferece para a produção do humor. Uma das principais características do texto-piada é a sua estruturação, marcada pela oposição entre os elementos antecedente x conseqüente, oposição essa que se resolve por meio de um mediador, cujas bases distribuem-se pelos níveis fonético-fonológico, morfossintático e semântico.