Generating evidence that matters in dentistry

South Texas Oral Health Network

Welcome to the South Texas Oral Health Network! STOHN is a practice-based research network (PBRN) dedicated to developing a research infrastructure for generating practical, timely information that can be used by dental practitioners to enhance the quality and efficacy of oral health care.

STOHN members are dentists practicing in the communities of South Texas. Alongside providing direct patient care, they partner with the Health Science Center to develop and carry out dental research where it really matters – in the offices and clinics.


Current Studies

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. 

Past Studies

Prevalence of Molar - Incisor Hypomineralization (MIH):

We are hoping to learn how often MIH occurs among children in South Texas aged 6 to 14 years. Clinicians are asked to take patient demographics and record the presence of MIH among 6 to 14 year old children who present for a dental exam. To get involved, please complete the study flyer (found below); in addition, there is study-related training and calibration for you and any study involved staff that will take place online.


Oral Cancer Knowledge Assessment:

We are attempting to assess current knowledge amongst dental professionals regarding oral cancer. This will help us develop future educational programs in this area.

This is a 12 question survey, and it should take less than five minutes to complete.



If you would like more information about these studies or would like to get involved, please contact the Network Coordinator, Monica Castillo at (210) 562-5652 or email  



Research Residency Network of Texas (RRNeT) • South Texas Ambulatory Research Network (STARNet) • VA Mental Health Network • South Texas Psychiatry PBRN • Improvement Science Research Network

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!