Learn the technique, review the evidence, and choose the certification path that fits your practice.
A minimally invasive approach to treating gum recession — see how it works, what the evidence shows, and where it fits in clinical practice.
A resource for dentists exploring PST — the technique, the evidence, and the training.
A single 2–3 mm entry is made with a needle. Using specially designed instruments, the gum is loosened and guided over the receded part of the tooth. With no releasing incision and no suturing, patients typically experience minimal pain, swelling, and bleeding — with immediate cosmetic results.
Long-term stability depends on addressing the cause of recession — biotype, brushing, occlusion — alongside the collagen membrane supporting new tissue attachment over time.
Side by side with the connective-tissue graft.
PST is predictable when it’s matched to the right patient and the right goal. Recognizing that match is a skill — and it’s the first thing training teaches.
Classification, phenotype thresholds, and how to set the goal case by case — Dr. Chao walks through the decision criteria in the free intro webinar.
Based on 28 of the original patients recalled at a mean of 14.5 years (68 Class I and II sites). Outcomes depend on case selection and technique — which is why training emphasizes both.
Chao J, et al. Long-Term Retrospective Case Series of the Pinhole Surgical Technique. Int J Periodontics Restorative Dent 2026;46:299–305.







One measure favored the graft: keratinized tissue width increased significantly in the CTG group over the year (2.38 → 2.61 mm, P = .002). Patient-reported outcomes showed no significant difference.
Documented long-term cases — root coverage photographed years after a single-visit treatment.
Results vary by case selection and biotype. Class III cases target thicker, wider tissue rather than complete root coverage.








Most dentists don’t hesitate because they doubt the technique — they hesitate about their own first cases. Training is built to close that gap before you ever treat a patient.
Practice on a typodont and mount until the instrument movements feel natural — so your first real case isn’t your first attempt.
Learn which patients are strong candidates and which aren’t, so you start with cases set up to succeed.
One-on-one guidance from the technique’s originator — bring your own cases and get specific answers.
Graduate troubleshooting, refresher days, and a community of certified clinicians for the cases where you want a second opinion.
PST is technique-sensitive — flap handling takes practice, and perforation or partial coverage are real early-case risks. Training covers how to avoid them and how to manage a case that doesn’t fully cover, so your first cases are supported, not solo.
You shouldn’t have to learn PST alone. Training is designed so you build judgment and skill before the stakes are real.
Once you’ve decided PST is right for you, training takes you from understanding to confident first cases. Choose the path that fits your goals.
Attend the refresher day, the advanced day, or both. Submit a request below — we’ll verify your certification record and email a secure payment link.
Join a foundational day to review technique, observe live surgery, and rebuild clinical confidence.
Advanced case techniques, targeted drug-delivery strategies, brushing stent protocols, DNA testing, and implants with PST®.
Both days together — the most complete in-person review and skill expansion.
Two questions come up more than any other: how the online course actually runs, and what an in-person day looks like hour by hour. Here’s both.
Choose your path and pay securely online. Payment options are available — just ask.
We email an e-agreement right after payment. Signing it releases your course access and kit.
Your course link is emailed and your kit ships — 13-piece patented instrument cassette, typodont, and practice mount.
Seven hours of HD video in English or Spanish, on your schedule, with 24-month access. Practice on the typodont as you go.
Roughly 40 questions, 85% to pass — covering technique, case selection, and protocol.
Your certificate and 7 CE credits are issued. Request a 1-on-1 with Dr. Chao any time by phone or email — unlimited, including a walkthrough of your first real case.
Check-in and continental breakfast begin at 7:00 AM, the program begins at 8:00 AM, and each day runs to 5:00 PM with 7 CE. Full details are provided after registration.
CE credits are earned per component — 7 from the online course, 7 for each in-person day.
Online Course $5,500 |
+ Foundational Day $7,500 · most popular |
+ Advanced Day $9,500 |
|
|---|---|---|---|
| 18 online modules (7 hrs) | ✓ | ✓ | ✓ |
| Instrument kit, typodont & mount | ✓ | ✓ | ✓ |
| Unlimited 1-on-1 mentorship | ✓ | ✓ | ✓ |
| Day 1 — hands-on + live surgery | — | ✓ | ✓ |
| Day 2 — full arch, implants & complications | — | — | ✓ |
| Total CE credits | 7 CE | 14 CE | 21 CE |
| Pinhole® Certification | On passing the final exam | On passing the exam, or by attending the in-person day | On passing the exam, or by attending the in-person days |
Attending an in-person day before finishing the online modules still certifies you — you earn the 7 CE for that day, and the online course’s 7 CE once you complete the modules and pass the exam.
A minimally invasive option for gum recession — no scalpel, no donor site. Presented by Dr. John Chao.
Hear directly from clinicians who have incorporated the Chao Pinhole® Surgical Technique into their practices.
“This has changed my life. The Pinhole Technique—the demand for it—has changed my life.”
“I’m a big believer in the Chao Pinhole Surgical Technique. I’m using it almost exclusively now for all my recession patients.”
“I was reluctant a little bit to take the course, but after I took the course, my practice grew a lot.”
“Even now, knowing that there is a possibility of new bone growth, I’m more excited to see that for my patients.”
“I have very good results, long term… I cannot express more how wonderful this technique is.”
“My favorite part was actually speaking with Dr. Chao… Watching him do it—that was the icing on the cake.”
“There’s new technology available that could offer patients better therapy for their gum recession—easier techniques, less pain.”
Testimonials reflect individual experiences. Clinical and practice results may vary.
Two ways in: watch the free intro webinar now, or join the email list for case videos and study updates. No commitment either way.
The PST® Fundamentals webinar with Dr. John Chao — the technique, case selection, and implementation. Free, on your schedule.
Tell us a little about your practice and we’ll follow up with course details, documented case videos, and study updates.

Advanced training and certification in the Chao Pinhole® Surgical Technique for dental professionals.