Effectiveness of polymerization of photopolymering devices used in clinical dental school of Recife

• Autor(a) principal: Bezerra, Ana Luisa Cassiano Alves
• Data de Publicação: 2022
• Outros Autores: Alvarenga, María Olimpia Paz, Durão, Márcia de Almeida, Monteiro, Gabriela Queiroz de Melo, Dias, Tereza Januária Costa
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Research, Society and Development
• Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/25574
• topic: Polymarization; Composite Resins; Light.; Polimerización; Resinas Compuestas; Luz.; Polimerização; Resinas Compostas; Luz.

This work aimed to evaluate the general state of different light curing devices used at the clinical school of dentistry at Uninassau/PE and their effectiveness in the polymerization of composite resins. For this, we evaluate the irradiance of 18 devices and their conditions of use considering the integrity and sanitization of the tips. For the analysis of effectiveness, a total of 15 specimens (Ꝋ 6 mm x 2 mm) were made with the composite resin Filtek Z250 (3M ESPE, St. Paul, MN, USA). The specimens were divided into 3 groups (n=5), two groups photoactivated with the devices used at the institution, the Biolux Plus (Bioart, São Carlos, Brazil) and the Optilight Max (Gnatus, Barretos, Brazil); and a control group using the Valo Grand Cordless device (Ultradent, Indaiatuba, Brazil), being submitted to the microhardness test after 24 hours. In microhardness, all specimens had higher means at the top, ~~ were higher in the control group and lower in the photoactivated group with Optilight Max, with a significant difference between the groups on each surface (p<0.001). The irradiance of most photo-activator devices evaluated (72.22%) was adequate for use, despite the noticeable need for maintenance, as 44.44% had resin material adhered to the tips and 38.89% with damaged tips. In general, the devices were suitable for use. The resins photoactivated by the different devices showed satisfactory microhardness in only one of the two light curing devices tested, highlighting the importance of periodic maintenance, as well as the need for clarification to students about their use.