OutDaughtered: Danielle Busby Is Stunned by Revelation Her Quintuplets Need $35K Worth of Dental Work (Exclusive)

The Busby girls are growing up — and things are starting to get expensive!

In PEOPLE’s exclusive look at OutDaughtered's season 10 premiere, Danielle Busby gets the shock of a lifetime when the girls visit the orthodontist for the first time. While there, Danielle learns that all five of them will need orthodontic treatment once their permanent teeth grow in.

The clip begins with Parker, 9, being examined by the orthodontist, who says she has an underbite. “I brushed for two minutes cause you’re supposed to brush them for two minutes," she says.

Her sister, Hazel, pushes back at that, telling Parker: “You don’t even brush your teeth that much."

"Yeah I do," Parker replies, though Hazel insists, "No, you don't."

When it's Olivia's turn with the orthodontist, Danielle is informed that she'll need "full braces" once all her permanent teeth come in. She also has an overbite.

In a confessional with all the quintuplets, Riley, who is told she has an underbite, claims, "Ava brushes the worst 'cause her teeth has brown spots on these teeth," as she points at her front teeth.

"The doctor said you gotta stop eating blueberries and strawberries but I don’t care," Ava replies. She later reveals she was told she has both an over and underbite.

Riley then shares a story her dad, Adam Busby, has told her. "My dad said the tooth fairy's whole entire body's covered with teeth. Even the feet, even the eyes," she says, with Parker adding, "Even the wings."

"It's scary. Really scary," Riley admits.

After all five girls are examined by the orthodontist, Danielle hears what the total damage will be when they all receive the orthodontic treatment they need to fix their teeth: an estimate of $35,000.

"$35,000?" Riley asks as Danielle covers her face with her hands in shock. "That’s a lot of money."

“$35,000? That’s insane," Danielle admits. "I mean, I should’ve just took one. It probably would’ve felt less, like, wah.”

As the clip ends, Parker asks, "Are you doing it today?”

In the new season of OutDaughtered, the quintuplets, who turned 9 in April, are starting third grade, while their older sister, Blayke, 13, is juggling "her middle school schedule and social life," leaving Adam and Danielle "struggling to keep up."

"The quints are learning how to read and taking on more chores around the house. Adam and Danielle can start to see which of the girls is thriving and who needs a little extra attention," reads an official synopsis. "Blayke is attending tryouts for the school volleyball team, and she's worried she won't make the cut."

"Adam and Danielle are a great team managing their six kids, but some days, it can be overwhelming. Adam has been the main caregiver the past few years, but now that he is taking more jobs out of the house, will the Busby’s have to hire additional help?" the synopsis continues.

The new season also features a family trip to Walt Disney World Resort in Florida, "meet ups with other families of multiples" and a fun experience cheering for the Houston Texans.

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OutDaughtered season 10 premieres May 7 at 9 p.m. ET/PT on TLC.