There were tears but also laughter and freshly scrubbed smiles.
A Rohnert Park dentist opened his practice Sunday to give 18 children free cleanings, X-rays, fluoride treatments and other preventative oral care.
"You're doing so good, so brave. Close your eyes," Dr. Anthony Lieu said.
Cynthia Martinez, 9, took two very deep breaths.
Lieu swabbed an anesthetic onto her gums in preparation for pulling a stubborn baby tooth.
"Your gums are going to fall asleep, then we will take it out," he said.
Between 9 a.m. and about 1 p.m., Lieu and his staff treated children from 7 to 14, most referred by Big Brothers Big Sisters of the North Bay.
The children walked in with plaque and cavities and walked out with clean teeth, a bag of dental hygiene goodies, a dentist referral and a balloon.
"Big Sister" Lois Fisher, an urban designer from Windsor, waited in a lobby chair as her "Little," 8-year-old Jessica Mendoza, was being examined in the dentist's chair.
"I had a mouthful of cavities, and I don't think she has a dentist," Fisher said. "I'm hoping she's going to get fluoride."