They denied deep tissue cleaning. The dentist told me to resubmit the claim "because Dentaquest often lies." I printed out Dentaquest's guidelines for covering this procedure and brought it back to the dentist this morning. The dentist showed me the claim they submitted and it matched exactly with dentaquest's guidlines yet they still denied it. What they're doing is illegal and immoral but I guess they don't think patients will do the research, because they just made it very easy to take legal action.