She Had Been Sleeping in an Armchair for Two Weeks

Quick answer: Toothache that only appears when you lie down is a pressure sign. Blood flow to the head increases when you are horizontal, and a tooth with inflamed or infected tissue has nowhere to expand. It is a strong signal that the problem is inside the tooth, not the gum or the sinus.

The call

Bracha, 62, from RBS Alef, had been perfectly comfortable all day, every day, for two weeks. Her problem started the moment her head hit the pillow — a deep, building ache in the upper left that took an hour to arrive and then kept her up. She had moved to the armchair in the salon and had been sleeping there, sitting up, since.

Her family doctor had wondered about sinus problems. A neighbour had suggested reflux. Nobody had looked in her mouth.

What we found

The upper left first molar. No response to cold or to electric pulp testing — the nerve was dead. Distinct tenderness when tapped. A dark, well-defined lesion at the palatal root tip on the x-ray, roughly 5mm across, which had clearly been developing for some time.

The postural pattern is not a curiosity. When you lie flat, venous return from the head is slower and hydrostatic pressure in the head rises. In a normal tooth nothing happens. In a tooth where inflammatory exudate is trapped in a rigid space at the root tip, that small increase in pressure is enough to load the nerve endings in the ligament. Sitting up drains it, and the pain settles.

Two other findings mattered. She had a history of a repaired heart valve, so we contacted her cardiologist about antibiotic prophylaxis before any procedure that would cause bleeding. And she was on a bisphosphonate for osteoporosis, which is a significant consideration if extraction is on the table — it raises the risk of poor healing in the jaw. That pushed the decision firmly towards saving the tooth rather than removing it.

What we did

Root canal treatment, with prophylactic antibiotic cover arranged in advance with her cardiologist.

First visit: access, full removal of necrotic tissue from three canals, thorough irrigation, calcium hydroxide dressing, sealed. Second visit three weeks later to fill the canals. A crown followed.

She slept in her bed that night.

The outcome

The lesion at the root tip was noticeably smaller at six months and largely healed at eighteen. The tooth is crowned and comfortable four years on.

Given the bisphosphonate history, keeping this tooth was worth a good deal of effort. An extraction in that situation carries a small but real risk of medication-related osteonecrosis of the jaw, and a root canal sidesteps it entirely.

What to do if this happens to you

1. Note the pattern precisely — what time, what position, how long it takes to start and to settle. It is genuinely diagnostic.
2. Sleep propped on two or three pillows as a temporary measure. It works, and it tells you something.
3. Do not assume it is your sinuses. Sinus pain usually affects several teeth and worsens bending forward, not lying flat.
4. Tell the dentist your full medical history, especially heart valve problems, bisphosphonates and blood thinners. It changes the plan.
5. Bring your medication list, not a summary from memory.
6. Be seen promptly. Painless by day does not mean minor; her lesion had been growing for months.

Losing sleep to a toothache in RBS Alef? Ramat Beit Shemesh Urgent Dental Care holds same-day emergency slots. 055-985-8845 · WhatsApp https://wa.me/972559858845 · Harav Kook 28/1, Beit Shemesh.

Based on real cases treated at the clinic. Names have been changed.