ENG 
65+ Years
Team experience
10000+
Smiling patients
30000+
Implants placed.
Our Dallas center provides
Specialist-led full-arch implant care
Full in-house lab - no outsourcing
Fully customized treatment - not one-size-fits-all
One-day or staged treatment options
No sales-driven consultations
Transparent, all-inclusive pricing - no hidden fees
Working Hours:
Monday - Friday
8:00 AM - 7:00 PM
Other Hours By Appointment
Meet Your Dallas All On 4 & Dental Implant Specialists
Dr. Ralf F. Poineal, DDS
Prosthodontist & Dental Implant Specialist
Nearly four decades in prosthodontics gives Dr. Ralf Poineal a clinical depth that is difficult to overstate. Trained at Emory University — where he earned both his DDS and his specialty certificate — he spent more than 25 years owning and operating private prosthodontic practices across two states, focusing exclusively on full-mouth implant reconstruction. Before dentistry, he served as a U.S. Army medic, an experience that instilled the calm, methodical patient-first approach his Dallas patients rely on today. He has lectured at the Emory University Dental Symposium on advanced prosthodontic techniques and TMJ dysfunction. For All-on-4 patients, his nearly 40 years of specialty experience means virtually no case is one he hasn't seen — and solved.
![Dr. Abena Owusu-Frimpong, DDS, MS Periodontist & Implant Surgeon](https://allon4dentalimplantcenters.com/wp-content/uploads/2026/06/Dr.-Frimpong.png")
Dr. Abena Owusu-Frimpong, DDS, MS
Periodontist & Implant Surgeon
Dr. Abena Owusu-Frimpong's path to implant surgery is unlike most — she began her career as a dental hygienist before earning her DDS from Howard University and completing a specialty residency in Periodontics and Implant Surgery at the University of Pennsylvania, where she also earned a Master of Science in Oral Biology. That progression from preventive care to surgical expertise gives her a perspective most implant surgeons simply don't have. Board-eligible in periodontics and licensed in Texas, she brings extensive full-arch rehabilitation experience, complex bone grafting, and IV sedation proficiency to the Dallas team — with a reputation for meticulous planning and consistently predictable outcomes.
Dr. Laurențiu Popa, DDS
Prosthodontist & Implant Specialist
Before Dr. Laurențiu Popa became a prosthodontist, he spent years as a master dental ceramist — hand-crafting crowns, bridges, and implant restorations in a laboratory. That foundation gives him something no residency program can replicate: an intimate understanding of how exceptional restorations are actually made. He graduated dental school in the top three of his class, then completed an Advanced Prosthodontic Preceptorship at UCLA, a full Prosthodontics Residency at the University of Alabama at Birmingham, and a Maxillofacial Prosthodontics Fellowship treating patients with cancer, trauma, and complex craniofacial conditions. The result is a clinician who doesn't just place implants — he engineers entire oral systems, from surgical planning through final aesthetic, with a level of precision rarely found in a single provider.
Dr. Eberechukwu Njoku, DDS, MA
Implant Dentist & Full-Arch Specialist
Dr. Eberechukwu Njoku brings an unusually rigorous academic and clinical foundation to All-on-4 care. She holds a Master of Arts in Biotechnology from Johns Hopkins University and her Doctor of Dental Surgery from the University of Maryland School of Dental Medicine — a scientific background that translates directly into analytical precision in treatment planning and outcomes. Trained across multiple leading implant systems and proficient in CBCT-guided surgery, bone grafting, and digital workflows, she has invested in advanced training at institutions including the Pikos Institute and the Stanley Institute. She has been recognized with the Dean's Research Award and the Gamma Pi Delta Prosthodontic Honor Society distinction. Her patients choose her not just for her credentials, but for the genuine care and end-to-end mastery she brings to every case.