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Dr. Stoker Performs Chao Pinhole Surgical Technique™ in Columbia, MD

Gum recession breakthrough treatment


The Pinhole Surgical Technique (PST™), invented and patented by John Chao, D.D.S., is an incision-free, suture-free procedure for treating gum recession. Through a small pinhole made by a needle, Dr. Chao uses specially designed instruments to gently loosen the gum tissue and glide it over the receded part of the tooth. Since there is no incision or suturing, patients can expect minimal post-operative symptoms (pain, swelling and bleeding). Most patients also are pleasantly surprised by the instant cosmetic improvement.

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Frequently Asked Questions


What is gum recession?

Gum recession refers to the loss of gum tissue along the gumline. This can occur as a result of periodontal disease (gingivitis, periodontitis, advanced periodontitis), the natural aging process, or abrasive habits when it comes to brushing the teeth.

Why should gum recession by taken seriously?

When gum recession occurs, the root structure of the tooth becomes exposed. This means that tooth decay and other problems can affect the teeth along the gumline and beneath it. Since healthy gums are essential for a healthy mouth, getting gum recession treated is important for lasting dental wellness.

What is Chao Pinhole Surgical Technique (PST™)?

The Chao Pinhole Surgical Technique™ is a minimally invasive option for treating gum recession. Unlike traditional grafting techniques, PST™ is incision and suture free.

All of the tools and techniques used to perform the Chao Pinhole Surgical Technique™ were created by Dr. John Chao, who personally taught Dr. Stoker the process.

How does Chao Pinhole Surgical Technique (PST™) differ from traditional gum grafting?

Traditional gum recession treatments involve the use of donor tissue or soft tissue grafts in order to rebuild the gumline. This soft tissue would be sutured in place and would join with existing gum tissue as it healed. While this traditional grafting treatment is effective, comparable results with better patient experience can be achieved through the Chao Pinhole Surgical Technique™.

How is Chao Pinhole Surgical Technique (PST™) performed?

During the Chao Pinhole Surgical Technique™, a needle is used to make a small hole in the patient’s existing gum tissue. Through this pinhole, special instruments are used to gently loosen the gum tissue. These tools help expand and slide the gumline to cover the exposed root structure.

There are no grafts, no sutures, and no incisions needed with the Chao Pinhole Surgical Technique™. It simply involves the adjustment of the existing tissue.

What are the benefits of Chao Pinhole Surgical Technique (PST™)?

The benefits of the Chao Pinhole Surgical Technique™ are many:

  • Less Discomfort for the patient after treatment.
  • Faster recovery for the patient than traditional grafting.
  • No need for uncomfortable sutures.
  • No need for scalpels or invasive surgical tools.
  • No need to take donor tissue from the patients palate.
  • Excellent, natural-looking, long-lasting results.

Dr. Patricia S. Stoker, DDS

General and Cosmetic Dentist in Columbia



A graduate from the University of Maryland, Baltimore College of Dental Surgery, Dr. Patricia Stoker had the honor of joining the prestigious General Practice Residency at Sinai Hospital in Baltimore, where she received intensive training in advanced dentistry.

With more than 20 years of private practice experience, Dr. Stoker is committed to providing nothing short of exceptional service and top quality dental care to her patients. She is a regular attendee of extended dental education courses to expand her knowledge and learn about the latest innovations, and has completed extensive training at the highly esteemed Pankey Institute for Advanced Dental Education. Aside from her professional career, Dr. Stoker resides in Columbia with her husband and three children.

Dr. George Philadelphia