Dr. Antonio Sanz
Periodontics & Oral Implantology | Chile, Spain, Sweden
Renowned for his work in Periodontics and Oral Implants, Dr. Sanz brings 40+ years of academic leadership and clinical excellence.
As former director of multiple graduate programs in Chile and Latin America, and current faculty at the OBI Foundation (USA), he trains professionals to approach implant dentistry with precision and ethics.
Dr. Gayle Fletcher
Oral Surgery & Extractions | U.S. Navy Veteran | Texas
A leading educator in wisdom tooth extractions and surgical protocols, Dr. Fletcher has trained over 700 dentists in his hands-on approach.
With a background in the U.S. Navy nuclear program and a DDS from UTHSC San Antonio, he combines technical mastery with human-centered teaching.
He co-founded Dental Development Seminars and Dental Mission Guatemala, treating over 30,000 patients.
Dr. Karl Ryan Rosell
Endodontics | U.S. Army Clinician | Board-Certified
Dr. Ryan Rosell is a board-certified endodontist and partner at Fox Creek Endodontics in Conroe, Texas, where he focuses on complex molar cases and predictable, patient-centered outcomes.
Dr. Antonio Sanz
Periodontics & Oral Implants | Chile, Spain, Sweden
Renowned for his work in Periodontics and Oral Implants, Dr. Sanz brings 40+ years of academic leadership and clinical excellence.
As former director of multiple graduate programs in Chile and Latin America, and current faculty at the OBI Foundation (USA), he trains professionals to approach implant dentistry with precision and ethics.
With over 40 years of experience, Dr. Antonio Sanz Ruiz is one of Latin America’s leading figures in Periodontics and Oral Implantology — known equally for his academic rigor and his dedication to patient-centered care.
A graduate of the University of Chile, Dr. Sanz completed advanced training in Periodontics in Chile, and specialization in Oral Implants at the Complutense University of Madrid, with clinical refinement at the Brånemark Osseointegration Centers in Sweden.
Dr. Sanz has led numerous postgraduate programs, including the University of Chile, Mayor University, and currently the University of the Andes, where he serves as Head Professor of Periodontics and Implantology. He was President of the Periodontal Society of Chile (1992–1998) and remains a key opinion leader in bioesthetic education through the OBI Foundation for Bioesthetic Dentistry (USA), where he now directs the Latin American Division.
As co-founder of INFOH, Dr. Sanz Ruiz offers not just surgical skill, but a philosophy of care that blends clinical excellence with humanism. His courses emphasize diagnostic clarity, treatment planning, and restorative foresight — ensuring that dentists leave not just more capable, but more confident.
“Implantology is more than technique. It’s precision, planning, and responsibility.”
Dr. Gayle Fletcher
Oral Surgery & Extractions | U.S. Navy Veteran | Texas
A leading educator in wisdom tooth extractions and surgical protocols, Dr. Fletcher has trained over 700 dentists in his hands-on approach.
With a background in the U.S. Navy nuclear program and a DDS from UTHSC San Antonio, he combines technical mastery with human-centered teaching.
He co-founded Dental Development Seminars and Dental Mission Guatemala, treating over 30,000 patients
Dr. Gayle J. Fletcher brings a rare combination of military discipline, surgical mastery, and a deeply human approach to dental education.
Graduated from the University of Texas Health Science Center San Antonio in 1991, Dr. Fletcher began his path as a nuclear power plant operator in the U.S. Navy before discovering his true calling: dentistry. He completed an AEGD residency in the U.S. Army and went on to serve 23 years in total, retiring as a Lieutenant Colonel.
With over three decades in private practice in Texas, Dr. Fletcher specializes in TMJ treatment, implants, and sinus lift procedures — all with a focus on innovation and efficiency. He’s the developer of the Bite Fork Stabilizer and the V.O.T.E. pencil, tools that improve diagnostics and patient outcomes.
In 2011, he co-founded Dental Mission Guatemala, training over 760 dentists and overseeing the extraction of more than 30,000 teeth in underserved communities. He also co-founded Dental Development Seminars and International Focus on Healing (INFOH) in 2015, bringing live-patient surgical training to a global audience.
Dr. Fletcher is a certified PACE Provider through the Academy of General Dentistry and has served as Chairman of the Foundation for Bioesthetic Dentistry. His teaching style is hands-on, results-driven, and always grounded in compassion.
“I don’t believe in just giving students instruments — I give them a quiver full of arrows.”
Dr. Karl Ryan Rosell
Endodontics | U.S. Army Clinician | Board-Certified
Dr. Rosell is a board-certified endodontist trained at the University of Iowa, with advanced experience treating both civilian and military patients — including root canals on working dogs in the U.S. Army.
He blends a calm, focused presence with advanced clinical precision, and brings a modern, mentorship-driven approach to complex molar endo cases.
Dr. Ryan Rosell is a board-certified endodontist and partner at Fox Creek Endodontics in Conroe, Texas, where he focuses on complex molar cases and predictable, patient-centered outcomes.
A graduate of the Herman Ostrow School of Dentistry at USC and the University of Iowa’s Endodontic Residency program, Dr. Rosell brings a rare combination of clinical precision and genuine passion for teaching to everything he does. He spent eight years serving as a dentist in the U.S. Army, and attempted to make the most of the opportunities the military provided.
For the past two years, Dr. Rosell has served as Course Director of the International Focus on Healing Molar Endodontics Course in Guatemala City — a live-patient immersion program he founded to give general dentists the hands-on experience and confidence they need to treat complex cases they would otherwise refer. He believes deeply that serving others through dentistry is not just a profession — it’s a calling. That conviction drives both his daily practice and the mission of this course: transforming dentists while making a meaningful difference in underserved communities.
When he’s not in the clinic or teaching, Dr. Rosell can be found with his family, on the golf course, or planning his next adventure.
“Precision is everything. But compassion is what patients remember.”