pst doctors forum

Inventor Dr. John Chao


The Chao Pinhole® Surgical Technique (PST), invented and patented by John Chao, D.D.S., is a scalpel-free, suture-free procedure for correcting gum recession. Through a small hole 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 cutting or stitching, patients can expect minimal post-operative symptoms (pain, swelling and bleeding). Most patients also are pleasantly surprised by the instant cosmetic improvement.


Chao Pinhole® Surgical Technique Animation

The unique features of the Pinhole Surgical Technique have aroused keen interest on the part of the media. So far news programs at 240 TV stations have featured this scalpel-free technique of treating a problem that is found in half of the U.S. population (JADA, 2003). Dr. Chao made a guest appearance on the nationally syndicated "The Doctors Show," "Dr. Steve Show," "ABC," "NBC," and over 240 other stations across the U.S. and Canada, reaching an estimated 10 million viewers. For this reason, you may have already heard questions and comments from your colleagues and patients about this "breakthrough" method of correcting ginigival recession.

Dr. Chao was granted patents and trademarks on the PST method and PST instruments by the U.S. Patent and Trademark Office. Please also see  "The Pinhole Surgical Technique, A Novel Approach to Root Coverage," as published in October, 2012 issue of The International Journal of Periodontics and Restorative Dentistry, a high-impact, peer-review journal. (Int J Periodontics Restorative Dent 2012;32:521-531.) Read the full article on the next page of this website.

Hands-On Workshop with Live Surgeries

Oct. 10-11, 2014
Oct. 24-25, 2014

Nov. 7-8, 2014
Nov. 21-22, 2014
Dec. 5-6, 2014

Jan. 9-10, 2015

Jan. 30-31, 2015

Feb. 20-21, 2015

Feb. 27-28, 2015

March 13-14, 2015

March 27-28, 2015

April 10-11, 2015

April 24-25, 2015

May 15-16, 2015

May 29-30, 2015

June 12-13, 2015

June 26-27, 2015

July 10-11, 2015

July 24-25, 2015

August 7-8, 2015

August 21-22, 2015

September 11-12, 2015

September 25-26, 2015

October 9-10, 2015

October 23-34, 2015

November 6-7, 2015

December 4-5, 2015

December 11-12, 2015

Course Full

Course Full

Course Full

Course Full

Course Full

Course Full

Course Full




Call for registration: (888) 603-2953



the doctors tv show"The Doctors"


dr chao seen on abc"KNBC 4 with Dr. Bruce Hensel"



dr chao seen on abc"KABC Interview with Dr. Chao"



              "Dr. Steve Show"


       "Good Morning San Diego"









Pinhole Technique: Historical Perspectives
Italian Dental Institute