Many people face issues with gum disease, especially if they wear braces because regular toothbrushes often don’t clean effectively. They can leave behind food particles and plaque, which can lead to serious dental problems. Dr. Bobbi Peterson, an orthodontist, noticed that her patients with braces were particularly at risk since regular toothbrushes couldn’t reach all the necessary areas in their mouths.
To address this problem, she developed the Big Mouth Toothbrush, which is an oversized electric toothbrush designed to clean better. It features a larger brush head for more effective cleaning and offers five different settings, allowing users to adjust their brushing experience to fit their needs. In addition, Dr. Bobbi committed to donating 40% of the profits from the pink version of the toothbrush to breast cancer awareness.
In her appearance on Shark Tank Season 14, Dr. Bobbi asked for $150,000 in exchange for 10% ownership of her company. She shared how her toothbrush could help many avoid gum disease. The Sharks appreciated her story but were worried about competition in the market. Ultimately, Barbara Corcoran agreed to invest $150,000 for 20% ownership of the company, along with a $2 royalty for each toothbrush sold for life.
The Big Mouth ToothBrush Net Worth Shark Tank Update 2025
Dr. Bobbi was looking for an investment of $150k in exchange for 10% equity in the company. At the time of the episode, she valued her company at $1.5 million. Dr. Bobbi successfully secured a deal with Barbara for an investment of $150k for 20% equity in the company, along with a $2 royalty per unit sold for life. The investment adjusted the company’s net worth to around $750k. After the show was aired, the company experienced a good boost in exposure. As per my rough estimate, the current net worth of Big Mouth Toothbrush in 2025 is around $500k.
$150,000 for 20% + $2 royalty per unit sold in perpetuity
N/A
Yes
Lori Greiner
Out
N/A
N/A
Kevin O’Leary
$150,000 for 25% + $5 royalty per unit sold in perpetuity
$150,000 for 20% + $2 royalty per unit sold in perpetuity
No
Robert Herjavec
Out
N/A
N/A
Mark Cuban
Out
N/A
N/A
Dr. Bobbi Peterson Backstory + Their Initial Pitch
Dr. Bobbi Peterson’s journey to creating the Big Mouth Toothbrush was quite challenging. As a teenager, she became a mother, but she didn’t let that hold her back. She worked hard to finish high school, then went on to college, dental school, and an orthodontic residency. Just a week after completing her education, she opened her own orthodontic practice.
While treating patients, she discovered a significant issue: many adults with braces were developing gum disease because their toothbrushes weren’t cleaning effectively. This sparked an idea for her—a larger brush head could fix this problem. After years of research and development, she created the Big Mouth Toothbrush, making her the first Black woman to invent an electric toothbrush.
When she appeared on Shark Tank, she confidently showcased her product. She explained that the toothbrush could cut brushing time in half while providing a more thorough clean. The sharks were impressed with its unique design. Dr. Bobbi sought $150,000 for a 10% stake in her company to help grow her business, hire employees, and get her toothbrush into stores.
Queries + Shark’s Responses, and Final Deal
Lori Greiner: She thinks the toothbrush is unique because it has five different settings, which she hasn’t seen in other electric toothbrushes. However, she feels that the market is too filled with similar products, so she chooses not to invest.
Robert Herjavec: He appreciates Dr. Bobbi’s hard work and passion but is concerned that big, well-known brands will dominate the market, making it difficult for her product to stand out. As a result, he decides not to make an investment offer.
Mark Cuban: He believes that Dr. Bobbi is trying to manage too many things at once—her dental practice and the toothbrush business. He advises her to choose one to focus on and, because of this, he decides not to invest.
Barbara Corcoran: Initially, she has questions about how Dr. Bobbi plans to use the investment money. After Dr. Bobbi explains that she would allocate the funds for hiring employees, better packaging, and expanding sales, Barbara still feels unsure and declines to invest at first.
Kevin O’Leary: He sees promise in the toothbrush idea but describes the market as “brutal” due to high competition. He offers to invest $150,000 in exchange for a 25% stake in the business, plus a $5 fee for each toothbrush sold indefinitely. Dr. Bobbi thinks this deal is too harsh and suggests better terms: a 20% stake and a $2 fee.
Barbara Corcoran: After listening to Dr. Bobbi’s counteroffer, Barbara reevaluates her earlier decision. She ultimately agrees to invest $150,000 for a 20% stake and a $2 fee per toothbrush. Dr. Bobbi accepts this deal, making Barbara her business partner.
Product Availability
The Big Mouth Toothbrush is a toothbrush that comes in a variety of colors, one of which is pink, and is dedicated to supporting breast cancer awareness.
You can purchase the Big Mouth Toothbrush from two main places: Amazon, where you can find it online. Big Mouth Toothbrush’s official website, is their dedicated online store.
What Happened To The Big Mouth ToothBrush After Shark Tank?
After the shark tank episode featuring the company aired, all its products sold out in just one day, which means there was a huge increase in interest and people wanted to buy them. Dr. Bobbi, who is both a business leader and an orthodontist, managed to run the company while still taking care of her patients.
As of today, the company is still operating and is estimated to be worth around $500,000. There is some uncertainty regarding the partnership with Barbara Corcoran, a well-known investor, but the brand continues to be popular among customers.
Conclusion
Dr. Bobbi Peterson created a special toothbrush called the Big Mouth Toothbrush that caught the attention of investors on the show *Shark Tank* because of its unique design. While some investors were unsure if the toothbrush could compete with many others already on the market, Barbara Corcoran saw its potential and decided to invest in it.
After appearing on the show, sales of the toothbrush increased significantly, showing it was a hit. Now, the company is thriving, helping people improve their dental health and supporting a good cause at the same time.
Hey, I’m Amna Habib, an undergraduate student pursuing a Bachelor’s in Business Administration. Shark Tank has always been one of my favorite TV shows because it offers a unique glimpse into the world of entrepreneurship. The way entrepreneurs present innovative solutions to everyday problems aligns with my academic interests and fuels my curiosity about business strategies. Each pitch showcases creativity and strategic decision-making, which I find both insightful and inspiring. Watching the show has deepened my passion for business and motivated me to explore the world of entrepreneurship even further. Beyond business and writing, I love food, shopping, and spending time with my friends and family.
