The twentieth century significantly facilitated the involvement analysis of the works from a more complex view, with the development of industry and science. Interdisciplinary studies hbecame inextricably linked to the growing field of conservation and restoration understanding the conservative properties of the materials applied on paintings conservation. Since then when the conservators began to consider the application of synthetic fibers on support reinforcement on canvas paintings. Pictorial interventions, pursuing the purpose that is was none other than textile reinforcement systems, are safer and stable than those that had been done up in the time. Throughout the decades of the eighties and nineties, there was a great progress in this area, developing the application of new synthetic fibrics such as the non woven fabrics, polyester fibers, polyamides and others. These fibers were analyzed jointly by conservators and scientists evaluating the pros and cons of each, always emphasizing the assumptions of minimum intervention and maximum reversibility, obtainint minimum contributions of stress in the work. This article discusses the use of tissues in the intervention of strengthening the textils support and how their study has allowed the development of new materials and methodologies in this area, showing how such use in a painting on canvas large format “The expulsion of the merchants from the temple” by Saverio Lillo (1734-1796).