Final answer:
Yes, a resin system can be used for a posterior tooth amalgam preparation when the original setup was for a DI/resin on tooth #8 and the dentist discovers distal caries on tooth #15 during the procedure.
Step-by-step explanation:
Yes, a resin system can be used for a posterior tooth amalgam preparation when the original setup was for a DI/resin on tooth #8 and the dentist discovers distal caries on tooth #15 during the procedure.
When a dentist discovers caries (decay) while working on a tooth, they must remove the decayed portion of the tooth and then fill the cavity to restore the tooth's function. In this case, since the initial plan was for an occlusal amalgam on tooth #8, the dentist can still use a resin system for the distal caries on tooth #15. The resin system is a common alternative to amalgam fillings and can provide a strong and aesthetic restoration for the tooth.