A 37 year old female patient complains of discoloration with her upper front teeth. Intra-oral examination reveals Intrinsic staining with maxillary incisors. Dentist prepares teeth to receive direct composite veeners. Which of the following  instrument material cannot be used in this case ?: (A) Stainless steel, (B) Teflon, (C) Teflon coated metal, (D) Non metallic
Answer is A. None