This is the condition the four policies disagree about most sharply, and the disagreement is not about how long you wait. Lemonade does not cover it at all: "Any dental illness" sits on its list of conditions not covered, and it defines a dental illness as one affecting the teeth and gums. Trupanion excludes dental health care but pays for extractions required by dental disease on two conditions, that all veterinary-recommended dental care has been followed and that no symptoms were noted before full cover began. Figo covers it but excludes treatment where tartar was noted before the start date. Spot covers the disease, yet lists planing among the dental services it will not pay for, in a sentence whose opening words limit the list to aesthetic, cosmetic, endodontic and orthodontic work; root planing is none of those four, so whether it is excluded is genuinely unclear.
What is gum disease, in plain terms?
Periodontal disease is inflammation and then destruction of what holds a tooth in place: the gum, the ligament and the bone of the socket. It starts as plaque at the gum line and ends, untreated, in a loose tooth. In the UK primary-care study behind this row, 2,797 of 22,333 dogs were diagnosed in a single year, a one-year period prevalence of 12.52 per cent. That makes it the most common condition in this register by a wide margin: roughly one dog in eight, in one year.
At what age does it usually appear?
Middle age, and it tracks size. In the same study the median age of dogs with periodontal disease was 7.54 years against 3.90 years for dogs without it, and their median adult bodyweight was 10.33 kg against 14.90 kg. Smaller dogs, older dogs. What an owner notices first is usually breath rather than pain. What goes into the record first is often a grade written down at a routine examination, which is exactly the kind of entry that predates a policy bought afterwards.
Which clause should you check before you buy?
First, whether the policy covers dental illness at all, because one of the four documents in this register does not. If it does, three narrower questions follow. Which treatments are carved out, because one policy names planing in a list whose own opening words may not reach it. What counts as a pre-existing sign, because one policy names tartar, and tartar is visible at a routine examination on a dog with no complaint. And whether cover depends on you keeping up recommended dental care, because one policy makes that a condition of paying.
Do insurers treat both sides of the body as one condition?
Not named in the bilateral list at Trupanion Definitions 7.c of form TRU-00001 (08/11), page 6 of 9. That list is open rather than closed, but a mouth is not a paired structure in the way a pair of hips or eyes is, and the study behind the breed figures recorded the condition as present or absent without laterality. This register therefore does not score it as two-sided; read 2026-09-04
Periodontal disease: how long before an insurer will pay for it?
Also called gum disease. Each insurer's waiting period and second-side rule below, from its own policy document.
Which insurer covers gum disease soonest, and which makes you wait?
Periodontal disease falls under the dental class at most US insurers. The table below gives each insurer's waiting period and its rule for the second side of the body, taken from the insurer's own policy document.
| Insurer | Waiting period | Second side of the body | Hereditary and congenital | Where it says so |
|---|---|---|---|---|
| Figo | 14 days Dental illness runs on the ordinary 14 day illness clock, but with the widest pre-existing test in this register. Treatment is excluded if the pet had any signs or evidence of periodontal disease, periodontitis, gingivitis, resorptive lesions, tartar or stomatitis before the original start date or during any waiting period. Tartar is on that list, and tartar is visible at a routine examination on a dog with no complaint at all. Preventive dental care and prophylaxis, open or closed deep cleaning, and removal of deciduous teeth are excluded at any time and for any reason. | Not stated in the document | Covered | Exclusion 19 a to d, page 6 of 13 of form IAIC FPI POL AI KS 1025; Definitions 44, Waiting Period, page 3 of 13 |
| Spot | 14 days Treatment of dental disease is not excluded here and runs on the ordinary 14 day illness clock. Two carve-outs sit next to it. Dental cleanings are excluded unless used to treat a covered illness or bought as an endorsement. And the exclusion list names planing among the dental services it will not pay for, in a sentence whose opening words limit it to aesthetic, cosmetic, endodontic or orthodontic services. Root planing is none of those four, so whether that exclusion reaches a periodontal treatment is genuinely unclear from this document. | Not stated in the document | Covered | Exclusions a and h, page 5 of 8 of form PET-P-20000-1024; WAITING PERIODS, page 4 |
| Trupanion | 30 days No dental waiting period is stated; dental illness runs on the general 30 day illness clock. But cover is narrow and conditional. Dental health care is excluded outright, and the one carve-back is extractions: where extractions are required due to dental disease the policy will pay for them, providing all veterinary recommended dental health care has been followed and no clinical symptoms consistent with dental disease were noted prior to full policy coverage. The first of those two conditions is an ongoing obligation on the owner, not a one-off test at enrolment, and no other policy in this register imposes one. | Not stated in the document | Not stated in the document | Exclusion (8), page 4 of 9 of form TRU-00001 (08/11); general illness waiting period at 5.b(2), page 3 of 9 |
| Lemonade | Excluded There is no waiting period here because there is nothing to wait for. "Any dental illness" is the first entry on this policy's list of conditions it does not cover, and the document defines a Dental Illness as an illness affecting the teeth and/or gums. Periodontal disease is an illness of the gums, so it falls inside that definition rather than beside it. Routine dental cleaning is excluded separately and by name. | Not stated in the document | Not stated in the document | Conditions not covered, page 4 of form LEM-PET (09-23), which lists "Any dental illness"; Definitions, Dental Illness, page 15: "An illness affecting the teeth and/or gums"; Definitions, Routine Dental Cleaning, page 19 |
The waiting period for gum disease is the number that decides whether a claim in the first year is paid at all, and it is the figure insurers vary most quietly. Each row below states the section of the policy it came from.
Every row cites the policy form code and the section it was read from, with the date we read it. Oldest check date on this page: .