A Team Dedicated to Nashua Smiles
We’re a group of dedicated professionals who combine creativity, skill, and teamwork to deliver great results. Every member brings unique strengths, but we share one goal — helping you succeed with confidence and care.
Bianca Rancourt-Hallas
Registered Dental Hygienist
Bianca is a registered dental hygienist who received her degree from New Hampshire Technical Institute. She also has a bachelor's degree in family studies from theUniversity of New Hampshire. Bianca is certified in CPR, ultrasonics and lasers. She joined Drs. Colletta and Guerriero in 2005 and has been a reliable and energetic employee. Bianca is fluent in French. She enjoys spending time with her family and being outdoors.
Kathleen Sweeney
Registered Dental Hygienist
Kathleen is a registered dental hygienist who received her degree from Middlesex Community College. She joined Drs. Colletta and Guerriero in 2000 and has been a loyal and energetic employee. She is certified in lasers, ultrasonics and CPR. She continuously attends classes to stay current with the latest technologies. She enjoys gardening, reading and her monthly book club.
Mabel Sanchez
Front Desk & DA
Mabel is one of our front desk coordinators and dental assistants. She received her DA certificate from Seacoast Career School in 2011 and joined us in 2013. She is also a Certified Medical Technician, is CPR certified, and is fluent in Spanish. Mabel has proven to be a very versatile and lively employee. She enjoys practicing yoga and taking care of her 3 children.
Mercedes Stanley
Dental Assistant
Mercedes is Dr. Guerriero' s dental assistant. She received her dental assisting certificate from Lincoln Technical Institute in 2014 and she is CPR certified. She brings a bubbly and warm personality to our practice. She enjoys spending time with her family.
