A landmark retrospective case series published in the International Journal of Periodontics & Restorative Dentistry has confirmed what Dr. John Chao and his patients have known for years: the Pinhole Surgical Technique® delivers lasting, predictable results for gum recession treatment.

The study, which represents the longest follow-up data ever published for PST, tracked patients over 14.5 years and found that 77.9% of treated sites maintained complete root coverage at the final follow-up. This level of long-term predictability is comparable to — and in some cases exceeds — outcomes reported for traditional connective tissue grafting.

Study Design and Methodology

The retrospective case series analyzed patients who had undergone the Pinhole Surgical Technique® at Dr. Chao's practice. Researchers measured root coverage, recession depth, keratinized tissue width, and other clinical parameters at baseline and at the 14.5-year follow-up.

The study's extended follow-up period is particularly significant because it addresses one of the most common questions about newer procedures: do the results hold up over time? The answer, according to this research, is a clear yes.

What This Means for Patients

For patients considering gum recession treatment, this study provides important reassurance. The Pinhole Surgical Technique® is not just a short-term fix — it is a durable, long-term solution that maintains its results over more than a decade.

Combined with the procedure's well-documented advantages — no scalpels, no sutures, minimal discomfort, and same-day results — the 14.5-year follow-up data makes PST an even more compelling choice for patients with gum recession.

To learn more about the Pinhole Surgical Technique® or to schedule a consultation with Dr. Chao, contact our Alhambra office at (626) 308-9104.