The Onset EZ Pen

Buffering local anesthetics just got easy. Introducing the Onset EZ Pen!

Built for efficiency, the Onset EZ Pen provides fast and easy buffering in seconds with no training needed.

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Why Use The EZ Pen?

Fast & Easy Buffering

No training needed. No assembly required. Buffer your local anesthetic in seconds.

Built For Efficiency

Delivers 30 doses without extra packaging or Sharps waste. Fully disposable once empty.

Trusted By Dentistry

#1 buffering company in Dentistry. Over 10 million doses delivered.

The Easy Choice For Buffering

Onset EZ Pen

$105.00

The Onset EZ™ Pen buffers individual cartridges of local anesthetic to adjust their pH to a more neutral pH prior to use. Each Onset EZ Pen contains a sterile solution of 8.4% Sodium Bicarbonate and Water for Injection, enough to buffer 30 local anesthetic cartridges.

Additional info

Beyond the Guesswork: Success Stories from the Operatory

"I’ve found the EZ Pen to be a total game-changer for elevating the patient experience and eliminating the fear of needles. Since incorporating it three weeks ago, my patients have reported that they no longer feel the stinging "zing" sensation during local anesthesia, allowing for a virtually painless injection. I strongly recommend the EZ Pen to any dental practice looking to alleviate patient anxiety and provide a more comfortable, high-quality clinical experience."

Dr. Derek Song

"I’ve been using Onset for about two weeks now, and it is a total game changer. It numbs instantly and takes the guesswork out of the process. Because you aren’t waiting for anesthesia to kick in, you can see more patients and never feel rushed. It’s one of the few things that truly increases your production."

Dr. Benjamin Hale

"We recently got the Onset system and have been using it regularly for our surgeries. The one thing I really like is that it allows me to proceed with our procedures right away. Patients are numb almost immediately after the injections, with very minimal wait time. It has saved me a considerable amount of time, which naturally translates to a more efficient and productive practice."

Dr. Adam Parikh

Effortless Local Anesthetic Buffering in Three Simple Steps

Designed for maximum efficiency and zero training, the Onset EZ Pen ensures a more comfortable injection experience for your patients without slowing down your workflow.

Onset EZ Pen Frequently Asked Questions

How many doses can I get from a single Onset EZ Pen?

Each Onset EZ Pen is designed to deliver 30 precise buffering doses. It is a fully disposable, all-in-one device that eliminates the need for extra packaging or sharps waste, making it highly efficient for high-volume practices.

How long can the Onset EZ Pen be used after opening?

The Onset EZ Pen is designed for extended shelf-life at the chairside. Once opened and put into use, the pen may be used for up to 30 days. This allows practitioners to keep one pen in each operatory for convenient, everyday use without worrying about immediate expiration.

Does the Onset EZ Pen require specialized assembly or staff training?

No. One of the primary advantages of the EZ Pen is its simplicity. It requires no assembly and no formal training to operate. It is designed to buffer local anesthetic in seconds, making it a preferred tool for dental assistants and clinicians looking to streamline their workflow.

Which anesthetics are compatible with the Onset buffering system?

The Onset system is versatile and can be used to buffer the most common local anesthetics used in dentistry, including Articaine, Lidocaine, Prilocaine, and Mepivacaine. This allows clinicians to maintain their preferred anesthetic choice while still providing the benefits of a buffered injection.

What are the clinical benefits of buffering an anesthetic with the Onset EZ Pen?

The pen delivers a precise dose of 8.4% Sodium Bicarbonate into the anesthetic cartridge to raise its pH toward a more physiologic level (neutral pH). This process results in:

Faster Onset: Reduces the time to patient numbness.
Reduced Injection Pain: Minimizes the "sting" often associated with acidic local anesthetics.
Greater Predictability: Increases the reliability of the anesthetic, even in patients with lower pain thresholds or infections.