Voted Best Dentist in Lakewood, CO: Why a Tooth That Feels Fine Here Hurts at 11,000 Feet

You leave the house at 6 a.m., merge onto I-70 at Morrison, and somewhere between Idaho Springs and the Eisenhower Tunnel a back tooth starts to throb. By the time you are clicking into your bindings it is a steady ache. On the drive home it fades. Monday it is gone.

It is easy to file that under weird and forget it. It is not weird. It has a name, and it is one of the more useful diagnostic signals a tooth can give you.

Pressure does not cause the problem, it reveals it

The term is barodontalgia, and it describes tooth pain triggered by a change in ambient pressure. Divers get it. Pilots and flight crews get it. In Colorado, people get it driving from a Front Range suburb at roughly 5,500 feet to a ski area at 10,000 to 12,000 feet in under two hours.

Here is the important part: a healthy, intact tooth does not do this. Ambient pressure changes have nothing to grab onto in a solid tooth with a healthy nerve. Pain on ascent means there is a space where there should not be one, or an inflamed nerve that is already under pressure and cannot tolerate more.

The usual culprits are a fracture line in a molar, a failing margin under an old restoration where a pocket of air or fluid has collected, an inflamed pulp that was not yet symptomatic at ground level, or a sinus that is doing the aching while the upper molars take the blame.

That last one matters in Colorado more than most places, because dry air and winter congestion make sinus pressure extremely common here, and maxillary sinus pain refers almost perfectly to the roots of the upper back teeth. Distinguishing between the two is a two-minute exam and a radiograph, not something worth guessing at.

The rule of thumb worth remembering

If it hurts going up, it is more likely to be gas expanding in a space that should be sealed. If it hurts coming down, it more often points toward sinus involvement. Neither is definitive on its own, but it is a useful thing to be able to tell a dentist.

What matters more than the direction is this: intermittent altitude pain is an early warning. A cracked cusp that announces itself at Loveland Pass in January is far cheaper to treat in January than it is in June, after the crack has propagated far enough to cause pain when you chew a bagel. Cracks do not heal and they do not stay the same size.

The other altitude problem, which is boring and constant

The dramatic version of altitude dentistry is the ski trip. The version that actually costs Front Range residents more enamel over time is humidity.

Denver metro relative humidity spends a lot of the year in the teens and twenties. That is desert-adjacent. Combine it with forced-air heat from October through April and a bedroom in Lakewood can be drier overnight than the outside air in Phoenix.

Dry air pulls moisture off exposed tooth surfaces. Low saliva means less acid buffering, less remineralization, and less mechanical rinsing. Add the altitude-driven habit of drinking constantly all day, which is genuinely good advice for hydration, and the details start to matter: sipping water is fine, sipping an electrolyte drink, sports drink, or flavored seltzer for eight straight hours is an acid exposure that never ends. Enamel needs recovery windows between acid hits. Continuous sipping removes them.

The practical version:

• Water for sipping, everything else at mealtimes.
• Humidifier in the bedroom from first frost to last.
• If you wake up with a dry mouth and a headache after a night at elevation, that is mouth breathing, and it deserves a conversation about airway rather than just more water.
• Do not brush immediately after anything acidic. Rinse with water, wait half an hour.

Timing your dental care around ski season

The Lakewood calendar makes this easy. Most people’s dental problems here get discovered in December and January and treated in February and March, which is exactly backwards.

Getting a comprehensive exam in the fall, before the first trip up I-70, catches the cracked cusps and failing margins while they are silent. It also front-loads any major work into a stretch when you are not spending your weekends at 10,000 feet with a temporary crown in your mouth. Temporary restorations and repeated pressure cycling are a poor combination.

For anyone in Jefferson County trying to figure out whether that ache on the way to the tunnel is a tooth or a sinus, it is worth being seen by a practice that has heard the story before. Lakewood Complete Dentistry has been Voted best dentist in Lakewood, CO and sees enough of it to sort the two apart quickly.

What not to do

Do not wait for it to happen twice. Intermittent pain that resolves is the phase where treatment is small.

Do not self-treat with sustained ibuprofen through ski season. It works, which is the problem. Masking pulpal inflammation for six weeks is how a tooth that needed a filling becomes a tooth that needs a root canal.

Do not assume that because it only hurts at altitude, it is an altitude problem. Altitude is the stress test. The tooth is the thing that failed it.

A tooth that gives you a signal on I-70 is doing you a favor. The cost of listening to it in October is a filling. The cost of ignoring it until July is usually a crown, and sometimes more.