ABSTRACT
PURPOSE: The purpose of this study was to evaluate the effects of different repairing techniques of a fractured sealant on microleakage in vitro. METHODS: A nono-filled flowable composite (Filtek Z350) was placed on the occlusal surfaces of 112 intact extracted molars following cleoning by prophylaxis and acid etching. Sealant failure was produced on the entire sample. The teeth were then randomly allocated into 4 groups, each representing a different method of repair: group 1 (control)-prophylaxis brush followed by acid etching and 10 seconds of curing time; group 2-prophylaxis brush, acid etching, application of bonding agent, and 10 seconds of curing time; group 3-prophylaxis brush, acid etching, and 5 seconds of curing time; and group 4-prophylaxis brush, acid etching, and 20 seconds of curing time. Then, they were pointed with varnish and immersed in 1% methylene blue. The teeth were then sectioned, and a total of 648 surfaces were scored for microleakage. RESULTS: Statistical analysis did not demonstrate any one method of repair to be superior to the control method. There were no significant differences in microleakage between 10 and 20 seconds of curing time. CONCLUSION: Prophylaxis brush, acid etching, and light-emitting diode light curing for 10 seconds seems to be the simplest and the most appropriate method of repair and is, therefore, recommended.
Subject(s)
Acid Etching, Dental/methods , Cariostatic Agents , Composite Resins , Dental Leakage , Pit and Fissure Sealants , Bisphenol A-Glycidyl Methacrylate , Curing Lights, Dental , Dental Prophylaxis , Humans , Light-Curing of Dental Adhesives , Molar , NanocompositesABSTRACT
The conservative approach in the treatment of maxillofacial trauma in children has been widely adopted. The type of fracture and its presence within the growing facial skeleton along with the presence of tooth buds may result in different management strategies to that employed in adults. An understanding of conservative treatment options is essential to make informed choices which will best manage these injuries, and an example is presented in this paper. This case report describes a 14-year-old boy who sustained trauma to the chin as a result of a fall, causing a mandibular symphyseal fracture. He was successfully treated by the means of applying direct interdental wiring combined with an acrylic splint.
