STATEMENT OF THE PROBLEM: Low pH of self-etch adhesives might cause suboptimal polymerization. PURPOSE: This study aimed to evaluate the effect of dentin depth (deep and superficial) on polymerization efficacy of two self-etch adhesives, with different pH by means of Knoop hardness test. MATERIALS AND METHOD: < 0.05). CONCLUSION: Degree of cross-linking of the self-etch adhesive with mild acidity was more than that of the strong self-etch adhesive after light-curing. Surface hardness of both adhesives was higher on superficial dentin compared to deep dentin.
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Firouzmandi et al. (2020) studied this question.