Meet The Doctors
Professional Philosophy
Trinity Dental Excellence has built its practice on the foundation of trusted, personalized dental care that consistently exceeds patient expectations. We believe strongly in offering comprehensive dental solutions while establishing collaborative partnerships with our patients. Dr. Gassett and Dr. Porcelli recognize that each patient has unique oral health priorities and different levels of desired care.
We take time to understand individual needs and preferences, providing expert guidance while respecting patient autonomy in treatment decisions. This patient-centered approach ensures that each treatment plan is tailored to achieve optimal outcomes while aligning with the patient’s personal goals and comfort level.

Dr. Sean Gassett
Background & Education
Dr. Sean Gassett’s distinguished dental career has deep roots in his upbringing. Born in Daytona Beach and raised in Gainesville, Florida, Dr. Gassett was introduced to dentistry through his mother, a respected dental hygienist, and his uncle, an established dentist in Tallahassee. This early exposure to the profession led to his acceptance into a prestigious early admissions dental program directly after high school.
Dr. Gassett holds impressive academic credentials from the University of Florida, where he earned his Bachelor of Science, Master of Business Administration, and doctor of dental medicine (DMD) degrees.
Dr. Gassett has demonstrated an unwavering commitment to professional excellence through extensive continuing education in specialized areas, including:
- Orthodontic treatment protocols
- Invisalign certification and advanced techniques
- Temporomandibular joint (TMJ) disorder diagnosis and therapy
- Advanced cosmetic dentistry procedures
- Dental implant placement and restoration
His dedication to clinical excellence is further evidenced by his continued professional education at Spear Education, a globally recognized institution for advanced dental training. Additionally, Dr. Gassett has achieved the prestigious Fellow status with the International Congress of Oral Implantologists, recognizing his exceptional expertise and significant contributions to the field of implant dentistry.
Dr. Gassett maintains active memberships in several prestigious dental organizations:
- American Dental Association
- Florida Dental Association
- Hillsborough County Dental Association
- American Academy of Dental Sleep Medicine
- International Congress of Oral Implantologists
These affiliations reflect his dedication to maintaining the highest standards in dental medicine and his commitment to remaining at the forefront of advances in oral healthcare.
Dr. Shadan Yassine
Dr. Shadan Yassine was born and raised in Boston, Massachusetts. She graduated with honors from the University of Massachusetts Boston. She was interested in dentistry as a child and pursued her goals to become a dentist, earning her DMD from Tufts University School of Dental Medicine. During this time, she mentored many of her younger colleagues from UMass Boston. Dr. Yassine has diverse experience working in Massachusetts and North Carolina. She recently moved to Florida and is happy to be a part of the community and looking forward to bringing out your beautiful smile.
Dr. Yassine believes in giving the best dental care by keeping up-to-date with current practices and current American national guidelines. She is Invisalign certified and has completed many hours of CE with implant placement and restorative treatment. She has a passion for cosmetic dentistry and giving patients the smile that they love.
Outside of the office, Dr. Yassine enjoys being out in the sun and walking by the beach. In her spare time, she enjoys traveling and learning about different cultures and cooking different recipes. Her hobbies include biking, painting, and interior design.
- American Dental Association
- Florida Dental Association
- West Coast District Dental Association
Dr. Hanan Beck
Dr. Hanan Beck is a native Floridian raised in the panhandle. She is a graduate of the University of South Florida, where she earned a dual bachelor’s degree in biomedical sciences and psychology. Dr. Beck graduated with her Doctorate in Dental Medicine from CASE Western Reserve University in Cleveland, Ohio. She engaged in numerous leadership and community outreach positions serving her cohorts and local community. After graduating, she completed an Advanced Education in General Dentistry residency at the University of Florida where she trained and gained experience in advanced dental procedures such as implant surgery, bone grafting, full mouth rehabilitation, TMJ disorders, and more.
Dr. Beck’s passion is to educate patients on preventative dental techniques and provide patients with the tools to maintain a beautiful and healthy smile. She believes in lifelong learning and takes the opportunity to do so by taking part in continuing her education through courses to further serve her patients and always provide the most recent up to date dental care. Her priority for every patient is to create a personal and comfortable dental experience.
In her spare time, Dr. Beck and her husband spend time relaxing by the beach, rollerblading, and biking with their two huskies!
Dr. Nesreen Nimer
Dr. Nesreen Nimer was born in Worcester, Massachusetts, and grew up in Tampa, Florida. After first attending the University of South Florida to obtain her undergraduate degree in biological medical sciences, with honors, she continued her education at the Case Western Reserve University School of Dental Medicine in Cleveland, Ohio. It was there that she completed her degree in the field of dentistry while earning her place on the Dean’s list. Dr. Nimer completed her general practice residency at the Advocate Illinois Masonic Medical Center in Chicago, Illinois, where she treated and worked with many patients with developmental disabilities.
Dr. Nimer has continued to grow as a dental professional, spending years honing her skills, and developing knowledge in all aspects of dentistry. She has practiced in Tampa and Lakeland, Florida, and has received continuing education in the area of digital workflow as well as certification in Invisalign. Dr. Nimer has a passion for her work, not just because of her interest in dentistry but for what it does for her patients. One of her favorite parts of the job is getting to provide quality care, service, and oral health education to her patients. By doing this, she is able to impact their health, happiness, and overall well-being.
Outside of the office, Dr. Nimer enjoys spending time traveling, cooking, hiking, and spending time with her friends and family, which includes her beloved family cat!
Dr. Emily Porcelli
Dr. Emily Porcelli is a distinguished dental professional who brings exceptional academic credentials and comprehensive clinical experience to Trinity Dental Excellence.
Education & Training
Originally from New Smyrna Beach, Florida, Dr. Porcelli completed her bachelor’s degree in biochemistry with a minor in business administration at the University of Florida in an accelerated three-year program. She subsequently earned her doctorate in dental medicine (DMD) from the prestigious University of Pennsylvania.
Dr. Porcelli further enhanced her clinical expertise through a specialized one-year residency program at Einstein Medical Center in Philadelphia. This advanced training focused on treating medically compromised patients, managing traumatic dental injuries, and expanding her proficiency in comprehensive dental care.
Dr. Porcelli offers a comprehensive range of dental services, including:
- Restorative procedures (fillings and crowns)
- Cosmetic dentistry (veneers)
- Oral surgery (surgical extractions)
- Implant dentistry (placements and restorations)
- Endodontic therapy (root canal treatments)
Beyond her professional pursuits, Dr. Porcelli is an accomplished baker who enjoys reading, creative crafting, and quality time with friends and family.