الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
The purposes of this study were to evaluate the penetration of two adhesive resins into cavitated and non cavitated artificial carious lesions and its effect on further acid attack. Also, to evaluate the clinical performance of these adhesives on the progression of cavitated and non-cavitated incipient proximal caries. I) Laboratory part: Artificial caries-like lesions were created on proximal surface of one hundred human primary molars using a demineralizing solution. The teeth were divided into three groups according to type of the adhesive resin used. The first laboratory group (LG1) was served for Single Bond adhesive application. The second laboratory group (LG2) was served for Xeno V adhesive application. The third laboratory group (LG3) was served as a negative control without any adhesive application. Each group was subdivided equally into two subgroups. In the subgroups A, the teeth were kept at artificial caries stage without any cavitation while in the subgroups B, a minute cavity was made at the center of artificial caries-like lesions using a sharp explorer. II) Clinical part: Ninety children with a white spot lesion on the proximal surface of a lower primary molar with a carious cavity on proximal surface of adjacent primary molar. The children were classified into two groups (n=45). In the first clinical group (CG1), the white spot lesions were treated with Single Bond adhesive resin. While in the second clinical group (CG2), the white spot lesions were treated with Xeno V adhesive system. Each group was subdivided equally into two subgroups. In the subgroups A, the white spot lesions showed a smooth surface only ,where as in the subgroups B , the white spot lesions showed smooth surface but the sharp explorer stick without pressure at some areas . The results of the laboratory part showed that the penetration depth of Single Bond adhesive resin in artificial carious lesions was not significantly different from that of Xeno V adhesive system. The resin infiltration was able to prevent further demineralization after exposure to second acid attack. The results of the clinical part showed that resin infiltration of both adhesives was effective in arresting progression of white spot lesions on deciduous molars as judged clinically and radiographically.