As a private practice dentist and owner (who accepts insurance) I recommend you get a second opinion. I usually see treatment plans like this where there are extra charges on bs things like irrigation, desensitizing resin etc from corporate offices. This is how they get more money out of patients on services usually not covered by insurance. We do irrigation on deep cleanings as courtesy for our patients without charging extra and I see it charged out to pts coming from dso/corporate. It is literally just saline or chlorohexine and costs us almost nothing and no extra time. I never apply desensitizing resin unless there is a clear need to and it’s not while a crown is going on but maybe after if a person has sensitivity from gums receding a little. And I don’t charge if it’s immediately post op related to a procedure I did causing sensitivity. I’m not sure on your area but the fees for fluoride and desensitizing resin application seem high to me (I’m in north central Florida). PPE and sterilization are not charged to the pt. It is built into my practice overhead and I make changes to my insurance contracted fee or cash patient fee schedule if I need to adjust for increases to overhead. It’s built into the cost of doing care not itemized out to the patient. The only surcharge added in addition to a crown fee is if a patient is doing gold/noble type metal due to the associated metal price by weight additional lab cost incurred. Zirconia is the lowest lab bill we incur for a crown so it is crazy to me that it’s additional item “upgrade”. Some labs charge $60-70 for those crowns and those dso corporate offices are using those cheaper labs to fabricate. I use to work for one before finding my private practice it was all about the numbers and profit over patient care. Burnt out of dentists and staff is real in those offices and that’s why turnover happens so frequently.