الفهرس 
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Abstract
This study was done to evaluate the clinical performance of Silorane
System Adhesive with its corresponding composite Filtek Silorane low
shrinkage composite (P90) in restoration of non carious cervical abrasion
lesions in comparison with other self-etch adhesives (Adper Easy Bond,
AdheSE and G-Bond) bonded to Filtek Z250 composite as a restorative
material.
The clinical performance of restorations was evaluated regarding
sensitivity, marginal adaptation and retention at 1 day, 3, 6, 12 months after
placement using modified United States Public Health Services criteria.
Twenty patients suffering from abrasion lesions in buccocervical
surface of their teeth, each patient had at least 4 affected teeth to be restored
with the 4 different self-etch adhesive systems used in the study thus giving a
total of 80 teeth.
I- Evaluation of restorations regarding sensitivity:
There was no significant difference between the four adhesive systems
at any recall period. But at the end of 1 year, both the Silorane System and GBond
had better performance than the other adhesives. This was attributed to
the low shrinkage nature of Silorane and adequate bond strength of G-Bond
due to its hyDROPobicity.
II- Evaluation of restorations regarding marginal adaptation:
Also there was no significant difference between the four adhesive
systems at any recall period; however, at the end of 1 year the Silorane
System had the best performance which was almost significant. This could be
attributed also to its low shrinkage nature and so better adaptation.