Comparison of the clinical effect of the adhesive strategies of universal adhesives in the treatment of non-carious cervical lesions: systematic review and meta-analysis

Objective: to compare, through a systematic review and a meta-analysis, the clinical effect of the adhesive strategies of universal adhesives (UA) in the treatment of non-carious cervical lesions (NCCLs). material and method: a search of the literature was carried out up to january 2018, in the biomedical databases: Pubmed, Embase, Scielo, Science Direct, SIGLE, LILACS, BBO, Google Scholar and the Central Register of Cochrane Clinical Trials. the selection criteria of the studies were as: randomized clinical trials, with a maximum age of 5 years and which report the clinical effects (marginal adaptation, discoloration or marginal staining, presence of secondary caries, postoperative sensitivity, retention and fractures) of the UA in the treatment of NCCLs. the risk of study bias was analyzed through the Cochrane Handbook of systematic reviews of interventions. results: the search strategy resulted in eight articles that reported no difference in marginal adaptation, discoloration or marginal staining, presence of secondary caries and postoperative sensitivity among the adhesive strategies of the UA; however they reported a difference between the retention and the presence of fractures, with the conventional adhesive strategy resulting in a better clinical effect. conclusion: the reviewed literature suggests that the conventional adhesive strategy of UAs results in greater retention and absence of fractures in the treatment of NCCLs.

Prevalencia y características del consumo de alcohol en escolares de la Comuna de Coltauco / Prevalence and characteristics of alcohol consumption in students of Coltauco Community

Se estudio la prevalencia y las características del consumo del alcohol en 891 escolares de la enseñanza básico y media de la comuna de Coltauco, VI región, a través de una encuesta autoadministrada. La encuesta arrojó los siguientes resultados. El 89% de los encuestados dijo haber ingerido bebidas alcohólicas, de los cuales, la mitad lo hicieron antes de los 10 años de edad. El agrado y la imitación son las principales razones para beber, siendo la chicha la bebida más consumida. El 15% de los escolares fue estimulado a beber por un amigo y el 10% por el padre. Un 52% reconoce que su padre bebe alcohol, en un 16% como bebedor anormal y un 37% como bebedor moderado. Considerando los resultados obtenidos, los autores ven la necesidad de insistir en los programas de prevención primaria del alcoholismo en los escolares de la educación básica