الفهرس | Only 14 pages are availabe for public view |
Abstract Preserving integrity of the primary teeth became one of the most important issues in pediatric dentistry to accomplish healthy development, psychics of the child and the physiological development of permanent dentition. There has been a significant growth in the conservative dentistry to restore primary dentition with the development of tooth colored materials over the last years. Any restorative material requires careful research in many aspects including its biocompatibility, sealing ability, fluoride release, physical and mechanical properties. The current in-vitro study was conducted to assess the effect of children’s coloring beverages; orange juice, pepsi, chocolate milk, on resin modified glass ionomer and compomer in relation to microleakage, color stability and microhardness. The study samples were performed for microleakage assessment on extracted eighty primary molars with sound buccal surfaces indicated for serial extraction or retained primary molars extracted at the time of eruption of the successional permanent teeth. Standard Class V were prepared in buccal surfaces of the teeth. They were randomly divided into two equal groups (n=40) according to tested materials. group I was restored with lightcuring compomer while group II was restored with resin modified glass ionomer. All steps were done according to the manufacturer’s instructions. For color and microhardness assessment, a total of 160 disks divided into two groups. group I restored with light-curing compomer (n=80) while group II was restored with resin modified glass ionomer (n=80), a 5-mm diameter and 2-mm thickness disks was prepared from each material using teflon mold. |