Holy crap: “The Truth About Dentistry; It’s much less scientific—and more prone to gratuitous procedures—than you may think.”

From a lengthy article in the Atlantic:

When you’re in the dentist’s chair, the power imbalance between practitioner and patient becomes palpable. A masked figure looms over your recumbent body, wielding power tools and sharp metal instruments, doing things to your mouth you cannot see, asking you questions you cannot properly answer, and judging you all the while. The experience simultaneously invokes physical danger, emotional vulnerability, and mental limpness. A cavity or receding gum line can suddenly feel like a personal failure. When a dentist declares that there is a problem, that something must be done before it’s too late, who has the courage or expertise to disagree? When he points at spectral smudges on an X-ray, how are we to know what’s true? In other medical contexts, such as a visit to a general practitioner or a cardiologist, we are fairly accustomed to seeking a second opinion before agreeing to surgery or an expensive regimen of pills with harsh side effects. But in the dentist’s office—perhaps because we both dread dental procedures and belittle their medical significance—the impulse is to comply without much consideration, to get the whole thing over with as quickly as possible

The uneasy relationship between dentist and patient is further complicated by an unfortunate reality: Common dental procedures are not always as safe, effective, or durable as we are meant to believe. As a profession, dentistry has not yet applied the same level of self-scrutiny as medicine, or embraced as sweeping an emphasis on scientific evidence. “We are isolated from the larger health-care system. So when evidence-based policies are being made, dentistry is often left out of the equation,” says Jane Gillette, a dentist in Bozeman, Montana, who works closely with the American Dental Association’s Center for Evidence-Based Dentistry, which was established in 2007. “We’re kind of behind the times, but increasingly we are trying to move the needle forward.”

Consider the maxim that everyone should visit the dentist twice a year for cleanings. We hear it so often, and from such a young age, that we’ve internalized it as truth. But this supposed commandment of oral health has no scientific grounding. Scholars have traced its origins to a few potential sources, including a toothpaste advertisement from the 1930s and an illustrated pamphlet from 1849 that follows the travails of a man with a severe toothache. Today, an increasing number of dentists acknowledge that adults with good oral hygiene need to see a dentist only once every 12 to 16 months.

Many standard dental treatments—to say nothing of all the recent innovations and cosmetic extravagances—are likewise not well substantiated by research. Many have never been tested in meticulous clinical trials. And the data that are available are not always reassuring.

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