Ruthinéia Diógenes Alves Uchôa Lins

Efeitos bioestimulantes do laser de baixa potência no processo de reparo

The wound healing process has always been an excellent subject for researchers. The use of low-power laser on wounds during the postoperative phase has increased the speed of the healing process. It has been implied that low power radiation affects cellular metabolic processes and promotes beneficial biological effects (analgesic, anti-inflammatory, and healing). Laser biostimulation appears to influence the behavior of the repair process. This paper aims at reviewing the most interesting aspects of the use of low-power laser in the tissue-repair process.

Conhecimento das propriedades físicas e da interação do laser com os tecidos biológicos na odontologia

The trend in dentistry is to incorporate less invasive methods to minimize pain and discomfort during and after dental intervention. Therefore, it is believed that laser therapy is an excellent treatment option, since it has beneficial effects for the irradiated tissues, such as activation of microcirculation, production of new capillaries, inflammatory and analgesic effects, in addition to stimulation of growth and cell regeneration. The comprehension of the interaction between lasers and tissue is based mainly on understanding the reactions that can be induced in those tissues by laser. This work intends to show how important it is to know the physical properties of laser as well as its interactions with biological tissues, since its effects and mechanisms of action are complex and are the object of various studies to better understand its forms of application and indications.

Use of cyanoacrylate in the coaptation of edges of surgical wounds

Cyanoacrylate has been used in several fields of different surgical specialties as an adhesive for closure of gingival flaps and in mucous and cutaneous lacerations. One of its advantages is that it has an excellent immunological response. In view of aesthetic needs, cyanoacrylate has been applied with satisfactory results, when compared with sutures. It presents better coaptation of edges of cutaneous and mucosal lesions, smaller residual scars, and biocompatibility. However, it is limited to areas of little tissue tension. This work attempts to provide a literature review with the aim of revealing the advantages of using tissue adhesives, especially cyanoacrylates, in wound coaptation in comparison with conventional methods.

Factors associated with early weaning at a Child-Friendly Healthcare Initiative Hospitall

PURPOSE: Considering the benefits of breastfeeding on childrens health, the aim of the present study was to determine factors associated with early weaning among children at a Child-Friendly Healthcare Initiative (CFHI) childrens hospital in the city of Campina Grande, state of Paraiba, Brazil. METHODS: An analytical, cross-sectional study was carried out involving 800 mothers of children between 0 and 24 months of age at the Elpidio de Almeida Health Institute. A semi-structured questionnaire was administered and contained questions on socio-demographic characteristics, eating habits and nonnutritive sucking habits. The chi-square test and Fishers exact test were employed for statistical analysis. A multivariate analysis was performed with variables that achieved a P-value < 0.25 in the bivariate analysis. RESULTS: The prevalence of early weaning was 13.5%. In the bivariate analysis, the factors associated with early weaning were income (P=0.001), childs birth weight (P=0.016), bottle feeding (P=0.003) and pacifier use (P<0.001). In the multivariate analysis, pacifier use remained significantly associated with early weaning (OR: 3.23; 95% CI: 1.871 to 5.591; P<0.001). CONCLUSION: Pacifier use was associated with early weaning, even when mothers were advised to avoid this habit.

Immunohistochemical evaluation of CD25+ cell expression in the progression of periodontal disease

It was assessed the immunohistochemical profile of CD25+ cells in cases of chronic gingivitis (CG) and chronic periodontitis (CP). Immunohistochemistry was carried out using streptoavidin-biotin complex and anti-CD25 antibody in 17 cases of CG and 25 cases of CP. Sixteen cases (94.1%) of CG were immunopositive. CD25 was focally expressed in 50% of the sample and diffusely expressed in 25%. The stained cells were localized not only beneath the epithelium, but also far from it. In relation to the cellular density quantification of CD25+ cells, score ++ was the most common. Concerning CP, all cases were immunopositive. CD25+ cells were expressed in focal or diffuse pattern either close or far from the epithelium. Diffuse distribution of positive cells throughout the connective tissue was seen in 60% of the cases and 32% showed focal or diffuse cellular pattern. Sixteen cases (64%) received score +++. It was identified that CD25+ cells are present in either a focal or a diffuse pattern in connective tissue. Significant differences in the density of cellular immunostaining between CG and CP were found. The greatest density was observed in CP cases, which suggests that the infiltrate of lymphocytes show a higher degree of cellular activation in periodontitis compared with gingivitis.