Great Expectations - Meet Our Mentors!

Dr. Robert Lemke

Dr. Lemke is a native of San Antonio and a distinguished board certified maxillofacial and oral surgeon. He holds degrees from Trinity University and the University of Texas Health Science Center San Antonio, where he earned both his dental and medical degrees. Dr. Lemke completed his rigorous residency training in Maxillofacial Surgery and Oral Surgery at the same institution.

With his unique combination of MD and DDS degrees, Dr. Lemke is exceptionally equipped to offer exceptional care to all his patients. His commitment to advancing the field is evident through his numerous publications in prestigious academic journals, authorship of 13 scientific abstracts on facial surgery, and contributions to two authoritative books.

Dr. Lemke is not only a dedicated practitioner but also a respected educator, having delivered national lectures on a range of topics, including craniofacial reconstruction, facial cosmetic surgery, facial trauma, and the innovative 'Teeth-in-a-Day' procedure for full-arch reconstruction.

Beyond his professional life, Dr. Lemke finds joy in spending quality time with his family and pursuing his passion for cycling and running. He also expresses his creative side as a published photographer, capturing the beauty of both local landscapes and exotic travel destinations.

Dr. Oshmi Dutta 

Dr. Oshmi Dutta is a Board-Certified Pediatric Dentist based in the Stone Oak area of San Antonio. Known for his passion for integrating innovative technology to enhance the patient and parent experience, Dr. Dutta brings a global perspective to his practice. Originally from India and raised in Dubai, UAE, he attended Mayo College in India and completed his initial dental training at the Institute for Dental Sciences, Belgaum. He later earned his Doctor of Dental Surgery from the University of Southern California in Los Angeles. Dr. Dutta is deeply committed to supporting organized dentistry, as well as mentoring fellow dentists and dental students. He serves as the President of the San Antonio District Dental Society and is a Vice President on the Texas Dental Association Board of Directors.

Dr. Kevin Beitchman

Dr. Beitchman is an orthodontist who has practiced in San Antonio, Texas for over 34 years. Born and raised in the Kansas City area, he is an enthusiastic fan of the Super Bowl Champion Kansas City Chiefs. After receiving his undergraduate degree from the University of Missouri, he attended the University of Texas Health Science Center at San Antonio Dental School, graduating in 1987 as the Valedictorian of his class. He then did a General Practice Residency in Hospital Dentistry at the Veterans Administration Medical Center in Los Angeles California. He went on to graduate from the University of California at San Francisco in 1990 with a Postdoctoral degree in Orthodontics and a Master's of Science in Oral Biology. Dr. Beitchman returned to Texas in 1991 and began his private practice in orthodontics, as well as became a faculty member of the Department of Orthodontics at the UT San Antonio Dental School for 12 years. Dr Beitchman is a member of the American Dental Association, Texas Dental Association, San Antonio District Dental Society, and the American Association of Orthodontics.

 Community service and giving back have always been particularly important to Dr Beitchman. He has actively been involved with the Scouts of America since 2003. He has been a campus partner with Hobby Middle School for over 30 years and received the Northside Independent School District Superintendent’s Award in 2018. Dr Beitchman has sponsored Educational Scholarships at three middle schools over the last 30 years to help encourage young people. In 2016 he was named a Fellow of the International College of Dentists. 

 In 2014, Dr Beitchman founded a charitable project which he named Spring for a Teddy Bear of Love, to help cheer up children at neighboring children's hospitals. This project began to say thank you for how a hospital took care of his son when he was born prematurely and placed in a NICU unit. To date, Spring for a Teddy Bear of Love has donated over 2,000 Build-A-Bear teddy bears to cheer up children in local hospitals.  His son Joshua, daughter Hope, and wife Linda, along with his staff, have worked together to bring smiles to these children.  In his spare time, Dr. Beitchman enjoys the great outdoors, hiking and fishing, especially in our amazing National and State Parks, and playing a little golf.

Dr. Sandra Nairooz

Dr. Nairooz was born and raised in Cairo, Egypt where she received a bachelor’s degree in dental surgery from Ain Shams University. After moving to the United States, she attended SUNY at Buffalo school of dental medicine and received her Doctorate in Dental Surgery (DDS) in 2013. She later completed a one-year internship in Orthodontics at UT health San Antonio.

Upon completing the program, she started her dental career in San Antonio where she practiced for over 5 years before completing her Orthodontics residency program at Jacksonville university and becoming a board-certified orthodontist. Dr. Sandra also is a member of the American Association of Orthodontists, the American Board of Orthodontics, American Lingual Orthodontic Association, American academy of Facial Esthetics, American Dental Association, Texas Dental Association, San Antonio District Dental Society.

Dr. Austin Lee

Dr. Lee is a restorative dentist in San Antonio, TX, focusing on Complex, Cosmetic, and Digital Dentistry. He graduated from Tufts University School of Dental Medicine in 2015 and AEGD from Boston University School of Dental Medicine in 2016 where he earned the Excellence Award. Committed to direct patient care and education, he had previously served as an adjunct professor at Tufts University, Boston University, and Harvard University. Now the owner of Orbis Dental Group in San Antonio, TX, Dr. Austin Lee practices full-time, serving South Texas. He is a member of Spear Institute, Pankey Institute, International Team for Implantology, American Dental Education Association, and American Dental Association.

Dr. Akshay Thusu

Dr. William Dunn

Dental Education matters! Teaching is the most important aspect of dentistry and I want to contribute to the success of our dental students' education. After retiring from the US Air Force Dental Corps in 2017, I have been in private practice, but I miss the close interaction between students and faculty. I have 37 years of clinical experience with 17 years devoted to dental education as a Program Director and Training Officer. I was also the Director of Research at the Air Force's largest residency program.

I am a board-certified Diplomate of the American Board of General Dentistry and I have completed a Fellowship in Dental Biomaterials. I have extensive experience in dental education int he classroom and in the clinic. I am excited to be a part of SADDS Great Expectations Program and I am looking forward to helping students launch their careers!

Dr. Emad Abdallah

Dr. Abdallah earned his bachelor’s in biochemistry in 2012 and his Doctor of Dental Medicine in
2017 from Boston University. He also completed an Implant Mastery course with over 100
continuing education credits. Before relocating to San Antonio in 2022, Dr. Abdallah practiced
in Detroit, Michigan for five years.

With a focus on cosmetic dentistry and implants, he has dedicated his career to staying up to
date with the latest techniques and technologies. He believes every patient deserves a
beautiful, healthy smile, and works tirelessly to make that a reality for his patients.

When he’s out of the office, Dr. Abdallah enjoys spending time with his family, exercising,
playing pickleball, exploring new restaurants with friends, and cooking delicious meals with his
wife.