28 years of practice. Nothing comes close to the latest technology.
Dr. O'Callaghan has been practicing endodontics since 1998. In that time she has used every cleaning and shaping system that has come to market. She brought GentleWave into the practice in 2019. It is simply the best outcome available for the person in her chair.
Traditional root canal instruments are mechanical — files that physically shape the canal, one pass at a time. They cannot reach the microscopic spaces, accessory canals, and irregular anatomy inside every tooth. GentleWave's Multisonic Ultracleaning® technology does. It uses a broad range of soundwaves paired with optimized fluids to reach every part of the root canal system — places no instrument can access. For you, that means a cleaner result, less of your natural tooth removed, and a significantly lower risk of failure over time. And because GentleWave works with fluid dynamics rather than mechanical files, it is more comfortable during the procedure itself — not just after.
"The root canal was so painless I literally kept dozing off to sleep."
"…I am 12 hours out from my procedure and have zero pain."
"The most significant advancement I've seen in 28 years of practice."
Real patients. Real root canals.
Hear directly from patients who chose GentleWave for their root canal treatment.
The outcomes that made us commit — and keep committing.
| What it means for you | Result | Source |
|---|---|---|
| Single-visit completion | 92%+ | Sigurdsson et al., J Endod 2016 |
| Mild to no pain post-procedure | 96.6% | Sonendo, data on file |
| Complete healing within 12 months | 97%+ | Sigurdsson et al., J Endod 2018 |
| Preserves more natural tooth structure | vs. standard root canal treatment | Molina et al., 2015 |
| In use at Endospecialists | All 4 locations |
Sigurdsson et al. (2016) J Endod. 42:1040–48 · Sigurdsson et al. (2018) J Endod. 44(3):510–517 · Molina et al. (2015) J Endod. 41:1701–5 · Vandrangi et al. (2015) Oral Health 72–86 · Sonendo, data on file. Studies performed on molars.
Every location. Every day. No premium tier.
GentleWave, CBCT imaging, the EdgePro Endodontic Laser, and surgical microscopy — available at every location, every day. Not at the flagship office. At all four.
None of it is a premium tier. There is no "standard" version of a root canal and a better version we offer you once you are in the chair. There is one version — because the goal is always the same: save your tooth.
Every doctor in this practice is trained on all of it, in Oakland, Berkeley, El Cerrito, and Hayward. Which technology a case calls for is a clinical decision — not a location, and not a price.
When a new doctor joins this practice, none of this is something they have to argue for. It is already here. That is the standard everyone at this practice works to — set once, held by everyone.
A GentleWave appointment, step by step.
You are comfortable before anything starts
The tooth and surrounding area are fully numbed. Treatment does not begin until you are ready and feel no pain.
Minimal access, maximum preservation
A small opening is made to reach the root canal system. GentleWave's minimally invasive approach means less of your natural tooth structure is removed than with standard treatment.
Multisonic Ultracleaning® reaches everywhere
Optimized fluids, activated by multiple acoustic frequencies, flush the entire root canal system — including microscopic spaces and accessory canals no instrument can physically reach. This is the GentleWave difference.
Cleaned, filled, and sealed — often in a single visit
The canal is filled and sealed the same day — over 92% of GentleWave cases are completed in a single appointment. A cleaner result also means a lower chance of needing retreatment — or losing the tooth entirely.
Ready to save your tooth with GentleWave?
EdgePro Endodontic Laser
For cases with complex root anatomy, Dr. O'Callaghan and her team also use the EdgePro Endodontic Laser — which has been shown to eliminate up to 99% of bacteria in the root canal. GentleWave and the EdgePro laser are complementary, not competing. Both are available at all four Endospecialists locations as part of the same standard of care.
Candid on cost. On your side on insurance.
Standard root canal therapy is covered under most dental plans. GentleWave carries a premium — insurance may not cover the full cost. We will tell you exactly what your plan covers before treatment begins, so you know what to expect.
Patients pay us directly and we submit to insurance as a courtesy. HSA and FSA funds are accepted. We also accept secondary insurance.
"GentleWave is worth every penny. I would not offer it at this practice otherwise."
What patients ask before their appointment.
- Will a GentleWave root canal hurt?
- 96.6% of patients report mild to no pain after their GentleWave procedure — Sonendo, data on file. The pain most patients arrive with is from the infection, not the treatment. Most patients are back to normal the following morning. One patient put it simply: "12 hours out from my procedure and I have zero pain."
- How long does GentleWave take?
- Over 92% of GentleWave cases are completed in a single visit (Sigurdsson et al., J Endod 2016). The procedure itself typically takes between 60 and 90 minutes, depending on the complexity of your tooth's anatomy.
- Does my insurance cover GentleWave?
- Standard root canal therapy is covered under most dental plans. GentleWave carries a premium that insurance may not cover in full. We confirm your coverage before treatment begins, so you know what to expect. HSA and FSA funds are accepted.
- Do I need a referral?
- No. You can contact us directly. Most patients who come to us are referred by their dentist, but you are welcome to call any of our four East Bay locations to request an appointment.
Ready for the best outcome available for your tooth?
Same-day emergency access · Four East Bay locations · No referral required
GENTLEWAVE and the GENTLEWAVE logo are registered trademarks of Sonendo, Inc. and used under license.