Call Us: (318) 868-0535| 745 Edgemont Streer, Ste B Shreveport, LA 71106
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DENTAL
PROFESSIONALS

We are a community of dental professionals dedicated to elevating patient care through collaboration. By referring to Shreveport Periodontics, you’re joining a network that values quality, compassion, and the continuous pursuit of excellence in dental health. Let’s work together to achieve the best for your patients. Reach out today to learn more about how we can support each other in providing exceptional dental care.

Dr. Jack O’Neill

A native of Savannah, GA, Dr. Jack O’Neill moved to northwest Louisiana in 2018 to be near his wife’s family. While he is proud of his Georgia roots, he is excited to now call Shreveport home. Dr. O’Neill graduated from the University of Georgia and earned his dental degree from the Medical College of Georgia (MCG) in Augusta. Following dental school, he completed three years of specialty training to earn his Certificate in periodontics and implant dentistry. He received multiple awards and scholarships during his dental training, and was very active in national dental leadership organizations. Dr. O’Neill is a Diplomate of the American Board of Periodontology and the International Congress of Oral Implantologists, and is past Adjunct Clinical faculty at the MCG dental school in the Department of Periodontics. Dr. O’Neill holds special interests in dental implants, soft tissue grafting, and treatment of gum disease with advanced laser therapies. He completes numerous hours of continuing education each year, he is the founder of the Savannah Spear Study Club, and is a current member and advisor for the Dental Advancement Seattle Study Club in Shreveport. He is a proud husband to Jessica and father to GiGi (9) and Clary (4). They are members of First Methodist Church Shreveport, and when not spending time with family, Dr. O’Neill enjoys golf, travel, and being outdoors.

Dr. Chris B. Gardner

Dr. Chris B. Gardner, DDS, MHS, is a Shreveport native and graduated from LSU in Baton Rouge. He is proud to have been raised in Shreveport where he was an Eagle Scout and graduated from Byrd High School. He then received his dental degree from LSU School of Dentistry in New Orleans, and completed his residency at the Medical University of South Carolina in Charleston, South Carolina. He received his certificate in periodontics and a masters in health sciences. Upon moving back to the Shreveport – Bossier area, he completed over 40 years of private practice in Bossier City, where he was the sole periodontist. Recently, at the invitation of his colleagues, Drs. O’Neill and Calahan, he joined their practice on April 1, 2024. He has been married to his wife, Mimi O’Brien Gardner,for 46 years. He has two daughters: Berret, lives in Thailand with her Thai husband, and Caroline, recently married to her husband, Austin, living in Baton Rouge. No grandchildren, but the cutest golden retriever grandpuppy in the world,Tater Tot! Dr. Gardner Loves saltwater fishing, especially in the Hackberry/Lake Charles area, and beginning to enjoy more traveling every year!

Dr. Blaine G. Calahan

Dr. Calahan is a native of Shreveport, LA. He was born the son of a Caddo Parish school teacher and a Veterinarian. Dr. Calahan attended school in the Caddo Parish school system and graduated from Caddo Magnet High School in 2004. During his youth, Dr. Calahan was a member of the Boy Scouts, Troop 18 in Betty Virginia Park where he earned his Eagle Scout Award in 2004. Dr. Calahan attributes his time in the Boy Scouts for his continued love of being outside, staying active and doing hard things. Dr. Calahan graduated from Louisiana Tech University with a degree in Biology and earned his dental degree from the Louisiana State University School of Dentistry in New Orleans. While at dental school, Dr. Calahan found an interest in Periodontics as the dental specialty which was rooted in preservation of the natural dentition and the mouth’s relationship to the whole body. After graduating from dental school, he completed a post graduate residency program at the University of Texas at San Antonio where he earned his certificate as a specialist in Periodontology and Dental Implantology. While attending his residency program, Dr. Calahan earned a Masters in Science for his research project titled: Histologic Evaluation of Wound Healing following Ridge Preservation with Cortical, Cancellous and Combined Cortico-Cancellous Freeze-Dried Bone Allograft, A Randomized Controlled Trial.
Dr. Calahan was awarded the John F. Prichard Prize for Graduate Research by the Southwest Society of Periodontists in 2017 for the paper’s contributions to the field of periodontal research. The purpose of the study was to assess the outcomes of different types of bone graft materials used in a procedure called ridge preservation whereby a bone graft is used to maintain the width and height of the jaw bone following a dental extraction. Maintenance of this width and height is critical for optimal outcomes for the replacement of teeth with dental implants. Dr. Calahan is active in the local, regional and national dental communities with his memberships as a Diplomate of the American Board of Periodontology, the Southwest Society of Periodontists, the Northwest Louisiana Dental Association. Dr. Calahan is a past president of the Northwest Louisiana Dental Association. He works hard to stay at the leading edge of contemporary periodontal and dental implant care. He often travels to seek the highest quality continuing education events each year and is also an advisor to the local Seattle Study Club affiliate known as the Dental Advancement and Leadership Study Club. Dr. Calahan is a husband, a father of three and an active member at the Noel United Methodist Church in Shreveport.

Our Staff

Dr. Westmoreland

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Brenda Lanham
Office Manager

Brenda was born and raised in Tunkhannock, PA. After serving 21 years in the US Air Force she retired at Barksdale AFB – she now calls Louisiana home. She has a BA in Business Administration from Louisiana Tech University and an Associate’s degree from the Community College of the Air Force. She is a certified Basic Life Support Instructor for American Heart Association. Brenda is also a certified personal trainer and group exercise instructor. She enjoys teaching aerobics, running, hunting, fishing and camping. Most of all, she enjoys spending time with her husband, Archie, their 4 grown children and families, including 5 grandchildren.

Dr. Westmoreland
Dental Hygienist

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Brenda Lanham
Surgical Assistant

Brenda was born and raised in Tunkhannock, PA. After serving 21 years in the US Air Force she retired at Barksdale AFB – she now calls Louisiana home. She has a BA in Business Administration from Louisiana Tech University and an Associate’s degree from the Community College of the Air Force. She is a certified Basic Life Support Instructor for American Heart Association. Brenda is also a certified personal trainer and group exercise instructor. She enjoys teaching aerobics, running, hunting, fishing and camping. Most of all, she enjoys spending time with her husband, Archie, their 4 grown children and families, including 5 grandchildren.