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La búsqueda de la sonrisa perfecta: por qué hoy los dientes torcidos son más frecuentes que nunca

En la actualidad, la prevalencia de dientes desalineados va más allá de la genética o el cuidado bucal. Investigaciones recientes, difundidas por National Geographic, destacan que el paso de una alimentación dura y cruda a una dieta blanda y procesada cambió la anatomía facial, generando más casos de maloclusiones.
Este fenómeno, que afecta a millones de personas, relaciona la transformación de la dieta y el tamaño mandibular con la salud dental y la percepción estética en la sociedad moderna.
El examen de cráneos antiguos revela que los primeros humanos tenían mandíbulas grandes y potentes, adaptadas a masticar carnes duras, vegetales fibrosos y semillas. Esta fortaleza mandibular era esencial por el esfuerzo requerido para procesar alimentos naturales. Según Sue Herring, docente emérita de ortodoncia en la Universidad de Washington, la comida extraída del entorno exigía un trabajo intenso de los músculos masticadores, lo que favorecía el desarrollo óseo y la amplitud mandibular.

Hace unos 12.000 años, la llegada de la agricultura marcó un cambio sustancial: los cereales y alimentos cocidos ganaron protagonismo, requiriendo menos esfuerzo masticatorio. Myra Laird, profesora adjunta en la Universidad de Pensilvania, subraya que una mandíbula robusta representa un gasto energético si no resulta necesaria. Así, la biología humana respondió con mandíbulas más pequeñas en respuesta a las demandas de la dieta.
El hueso mandibular es sensible al uso: menos actividad muscular implica huesos y mandíbulas menos desarrolladas. Estudios en animales muestran que una alimentación líquida o blanda puede modificar la estructura facial al reducir el uso de los músculos masticadores, confirmando esta tendencia también en los humanos.
La reducción del tamaño de la mandíbula provocó que el espacio para los dientes resulte insuficiente. Mantener la misma cantidad de dientes en una mandíbula más pequeña produce apiñamiento y desalineación dental, especialmente en las muelas del juicio. Julie Lawrence, profesora adjunta en la Universidad de Nevada, explica que la erupción dental funciona como una cremallera, y la falta de espacio produce casos de maloclusión.

Laird señala que “la tasa de maloclusión aumenta muchísimo [en los humanos modernos], y esto es común en todas las poblaciones”. Sin embargo, también se encontraron casos de apiñamiento en cráneos de homínidos primitivos. Lawrence advierte que los datos fósiles pueden estar sesgados, ya que los dientes mejor conservados suelen encontrarse en condiciones favorables.
Ante este contexto evolutivo, la demanda de tratamientos ortodónticos como brackets o cirugías creció de forma exponencial. Sin embargo, la prevalencia de maloclusiones no se debe exclusivamente a cambios en la dieta.
La alineación dental también está determinada por elementos genéticos, condiciones ambientales y alteraciones en el desarrollo. Algunas maloclusiones, como la submordida o sobremordida extrema, tienen origen hereditario y no se vinculan directamente con la industrialización. Además, existe predisposición genética en ciertas poblaciones, lo que confirma que el fenómeno es multifactorial.

La mayor conciencia estética de la sociedad contemporánea acentúa la demanda y percepción de los problemas dentales. Herring afirma que “ahora somos mucho más conscientes de las maloclusiones que antes”, y el interés por la apariencia dental repercute en la percepción de la frecuencia de dientes torcidos.
La prevalencia de dientes desalineados en las sociedades modernas responde a la interacción de factores evolutivos, cambios alimentarios, genética, ambiente y una sensibilidad estética cada vez mayor.
La evidencia científica demuestra que la búsqueda de la sonrisa perfecta depende de mucho más que el simple cuidado bucal. La demanda de ortodoncia y tratamientos correctivos seguirá en aumento, impulsada por la forma en que la evolución y la cultura modelan la sonrisa moderna.
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Top Republican slams Katherine Clark for admitting suffering families are ‘leverage’ in shutdown battle

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EXCLUSIVE: A top House Republican is criticizing one of Democrats’ senior leaders for saying the government shutdown and its effects are a «leverage point» to accomplish their goals on healthcare.
«It’s appalling to see the number two House Democrat openly admit that the left is weaponizing hardworking Americans as ‘leverage’ for political gain, even acknowledging families will suffer in the process,» Republican Study Committee Chair August Pfluger, R-Texas, told Fox News Digital.
«This isn’t governance — it’s calculated hostage-taking, with struggling families caught in the balance as Democrats attempt to force through their radical agenda. Families are seen only as leverage by Democrats. We always knew it, now they’re saying it out loud. Absolutely shameful.»
House Minority Whip Katherine Clark, D-Mass., sat down for an interview with Fox News’ Chad Pergram last week. At one point, Clark was asked about who Americans would find responsible for the ongoing shutdown.
BATTLEGROUND REPUBLICANS HOLD THE LINE AS JOHNSON PRESSURES DEMS ON SHUTDOWN
Republican Study Committee Chairman August Pfluger is criticizing House Minority Whip Katherine Clark’s comments in a recent interview on the government shutdown. (Tom Williams/CQ-Roll Call, Inc via Getty Images; Eric Lee/Bloomberg via Getty Images)
«I mean, shutdowns are terrible and, of course, there will be, you know, families that are going to suffer. We take that responsibility very seriously. But it is one of the few leverage times we have,» Clark responded.
«It is an inflection point in this budget process where we have tried to get the Republicans to meet with us and prioritize the American people, and it’s been an absolute refusal, and they were willing to let government shut down when they control the House, the Senate and the White House rather than come and talk about an issue as important to the American people is if they can afford healthcare.»
Fox News Digital reached out to Clark’s office for a response to Pfluger’s comments.

The government is in a shutdown after Congress failed to reach an agreement on federal funding. (Getty Images)
The government shutdown is now in its 23rd day after Senate Democrats rejected the GOP’s federal funding bill for a 12th time on Wednesday evening.
Republicans proposed a measure that would keep federal funding roughly flat until Nov. 21, a spending patch called a continuing resolution (CR), so that negotiators would have more time to strike a longer-term deal on fiscal year (FY) 2026.
The bill passed the House largely along partisan lines on Sept. 19.
But Democrats have been pushing for any funding deal to include an extension of Obamacare subsidies that were enhanced during the COVID-19 pandemic. Those enhancements are set to expire at the end of 2025.
Republican leaders have signaled a willingness to negotiate on those subsidies, but have ruled out doing so in the current package.
SCREAMING MATCH ERUPTS BETWEEN HAKEEM JEFFRIES, MIKE LAWLER AS GOVERNMENT SHUTDOWN CHAOS CONTINUES

Speaker of the House Mike Johnson speaks during a news conference at the U.S. Capitol on the 10th day of the federal government shutdown in Washington, Oct. 10, 2025. (Alex Wroblewski/AFP via Getty Images)
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«Mike Johnson said, we have an eternity to talk about this, an eternity. This impact of the ACA is in the next few weeks,» Clark said. «Yes, there are repercussions to a shutdown that are terrible for people.»
She continued, «I feel for military families that even if they get paid, you know, there are lots of spouses that also work that are feeling these cuts because we’ve encouraged military spouses to become federal workers to accommodate all the travel and moving that military families so frequently experience. And now we’re saying to them, you’re not going to be paid for your work. I mean, let’s get it together here. The Republicans need to come to town. They need to sit down with us.»
Republicans have seized on Clark’s comments in recent days, however.
House GOP Chairwoman Lisa McClain, R-Mich., said in a statement on Wednesday, «Democrats are holding American families hostage to advance their political agenda, and they’re admitting it.»
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Louvre director grilled on spectacular security failures, including camera pointing away from key balcony

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The director of Paris’ iconic Louvre Museum is facing scrutiny over apparent security failures that allowed thieves to make off with more than $100 million worth of jewels.
In her first public address since the heist, Louvre Museum director Laurence des Cars acknowledged there was a «terrible failure» and said, «Despite our efforts, despite our hard work on a daily basis, we failed,» The Guardian reported.
Des Cars admitted that security around the Louvre’s perimeter was an issue and that the only camera monitoring the outside of the museum was facing away from the balcony that led to the gallery where the precious jewels were kept, according to reports. The Guardian also noted that des Cars confirmed all the museum’s alarms were functioning during the burglary.
LOUVRE HEIST ADDS TO HISTORY OF HIGH-PROFILE MUSEUM BREACHES, LEAVES OTHER GALLERIES ON EDGE
Louvre Museum director Laurence des Cars made her first public remarks since the recent jewelry heist at a press conference on Oct. 22, 2025, in Paris, France. (Edward Berthelot/Getty Images)
«We failed these jewels,» des Cars said, according to the BBC. The outlet also quoted the director as saying that no one is safe from «brutal thieves — not even the Louvre.»
On Sunday, burglars appeared to use a truck-mounted electric furniture lift to conduct the heist, Laure Beccuau, the Paris prosecutor, said in an interview with RTL radio, according to The New York Times. She added that the thieves obtained the lift by pretending it was for a move. Additionally, Beccuau noted that it would not be easy for burglars to sell the stolen jewels for what they’re worth if they tear the pieces apart or melt them, according to the Times.

Police secure the area outside the Louvre Museum in Paris, where burglars used a truck-mounted moving lift to reach a second floor window and steal royal jewelry valued at more than $100 million. (Dimitar DILKOFF / AFP)
HOW LOUVRE BURGLARS OBTAINED TRUCK-MOUNTED LIFT TO MAKE OFF WITH JEWELS WORTH MORE THAN $100M
The thieves got away with a total of eight objects, including a sapphire diadem, necklace and single earring from a set linked to 19th-century queens Marie-Amélie and Hortense. They also stole an emerald necklace and earrings tied to Empress Marie-Louise, Napoleon Bonaparte’s second wife, and a reliquary brooch. Empress Eugénie’s diamond diadem and her large corsage-bow brooch — an imperial ensemble of rare craftsmanship — were also part of the loot.
«The theft committed at the Louvre is an attack on a heritage that we cherish, for it is our history,» French President Emmanuel Macron said in an X post on Sunday. «We will recover the works, and the perpetrators will be brought to justice. Everything is being done, everywhere, to achieve this, under the leadership of the Paris prosecutor’s office.»

Forensic police officers arrive at the Louvre Museum after reports of a robbery in Paris, France, on Oct. 19, 2025. (Gonzalo Fuentes/Reuters)
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The heist has prompted a national reckoning, with some officials comparing the shock to the 2019 burning of Notre Dame cathedral. Beccuau told RTL radio that the team investigating the heist had grown from 60 investigators to 100, underscoring the importance of the case on national and international levels.
Fox News Digital’s Michael Dorgan contributed to this report.
crime,france,emmanuel macron,museums exhibits
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