Acidulate phosphate fluoride gel 1 Acidulated Phosphate Fluoride 1 Bond Force dental cement 1 Ceramics 1 Composite Resins 1 Dental Porcelain 1 Dentin 1 Gels 1 Humans 1 Hydrofluoric Acid 1 In Vitro Techniques 1 Surface Properties 1 Tensile Strength 1 acidulated fluorophosphate 1 ceramics 1 comparative study 1 dental porcelain 1 dentin 1 gel 1 human 1 hydrofluoric acid 1 in vitro study 1 lithia disilicate 1 lithium disilicate ceramic 1 profilometer resin 1 surface property 1 tensile strength 1 tensometer 1