Service
Dental sealants
Sealants are a thin coating painted onto the chewing surfaces of the back teeth. They keep food and bacteria out of the deep grooves a toothbrush cannot reach.

Who they are for
Children and teenagers benefit most, as soon as their permanent molars come in. Adults with deep grooves and no fillings in those teeth can have them too.
Quick and painless
There is no drilling and no numbing. The tooth is cleaned, the sealant is painted on, and a light sets it hard in seconds.
Questions
Questions
How it works
How sealants are placed
A few minutes per tooth, no discomfort.
1The tooth is cleaned
The chewing surface is cleaned and dried.
2The sealant is painted on
The liquid sealant flows into the grooves of the tooth.
3A light sets it
A curing light hardens the sealant in seconds, and you can eat right away.
About us
Why families choose Happy Smiles
At the same address in Columbia for over fifty years — started by Dr. Brockley, then Dr. Qilin Xu.
Fifty years, one address
543 Locust St has been the practice's home the whole time.
A dentist who knows you
Dr. Xu holds degrees in medicine and dentistry — the same doctor at every visit.
Routine to emergency
Exams and cleanings, fillings, dentures and veneers, whitening — and emergency care when something cannot wait.

Services
Other services
Everything we do, under one roof.
Questions about sealants? Ask us
Visit us
We're waiting for you in Columbia
543 Locust St
Columbia, PA 17512
- Monday – Thursday
- 8:00AM – 5:00PM









