الفهرس 
Titratable acidity of foods and drinks
Immersion of specimens in beverages:Only 14 pages are availabe for public view
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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.