Generating evidence that matters in dentistry

South Texas Oral Health Network (STOHN) 

Welcome to the South Texas Oral Health Network (STOHN)! STOHN is a practice-based research network (PBRN) dedicated to developing a research infrastructure for generating practical and timely information to enhance the quality and efficacy of oral health care. STOHN members are practicing dentists and dental hygienists in South Texas who help to develop and implement dental research where it really matters – in their practices. Below is a description of some STOHN studies currently enrolling members:


STOHN Autism Tooth Fairy Study: In collaboration with Dr. Raymond Palmer and his team from the Department of Family and Community Medicine, STOHN launched the Autism Tooth Fairy Study to practices in South Texas. STOHN will be collecting healthy deciduous teeth that will be analyzed for potential biomarkers that impact neurological development. The STOHN study team developed and incorporated an educational environmental health component to inform dental healthcare providers of recent autism research and introduce environmentally induced illnesses. 

What is the Fuss about Floss? An Issue of Critical Thinking: In May of 2017 STOHN launched its first hygienists only study. This anonymous online survey focuses on evaluating the knowledge, awareness, and attitudes of practicing dental hygienists and dental hygiene faculty in response to the recent Associated Press (AP) report "Medical Benefits of Dental Floss Unproven"   focused on the lack of evidence supporting flossing as part of a daily oral hygiene routine. 

Assessing Patients' Knowledge and Awareness of Xerostomia and its Prevalence in South Texas: A Card Study We are interested in testing patient’s recognition and awareness of Xerostomia, also known as dry mouth. Xerostomia affects millions of people in the U.S. with an estimated prevalence from 5.5% to 46%, affecting the geriatric population most prominently. Contact us to find out more detail about the study and how to become involved. 


If you would like more information about these studies or are interestd in joining STOHN, contact Monica Castillo at (210) 562-5652 or e-mail  

Investigator Spotlight

Cheryl DavisCheryl Davis
"STOHN's purpose is to examine and evaluate the health care processes that occur in real world practices. It gives us the unique opportunity to give back to our profession and patients."

Current Activities


GOOD NEWS!  The South Texas Oral Health Network (STOHN) is looking for new members! 

If you join STOHN, you will have the opportunity to:

- Participate in research projects of interest to you, in your own practice with your own patients.

- Be involved with observational and interventional studies

- Gain free CE credits.

- Give back to the profession of dentistry.

- Be affiliated with the University of Texas Health Science Center, San Antonio.

There is no cost to join the network. 

To get started simply fill out the required enrollment questionnaire about your professional background, practice, and patients. You can access the questionnaire here by going to this link:

There are 3 levels of enrollment available to you.  These are:

1. Informational - receives newsletters and correspondence only                                                                                                                       

2. Limited – receives newsletters, correspondence and participates in questionnairres.

3. Full - all of the above, plus participation in in-office clinical studies.

Once you enroll you will be contacted by Colleen Dolan, STOHN Network Coordinator about the next steps.

 We look forward to hearing from you!