Same-day emergency appointments
Same-day emergency dentist in Rancho Cucamonga
Prompt, compassionate care for toothaches, broken teeth, infections and dental injuries — same-day appointments whenever possible.
Care from Dr. Sidney Lee, DDS

Right now
In pain? Here’s what to do.
Call us first. We’ll tell you what to do on the way and get you in as soon as we can.
Call us first
We reserve slots every day for real emergencies. Call, and we’ll find a time to see you.
Knocked-out tooth?
Hold it by the crown, keep it in milk or your cheek, and get here within 30–60 minutes.
Swelling or infection
Rinse with warm salt water and use a cold compress outside. Don’t wait: infections can spread.
Insurance welcome
We accept most PPO dental insurance and offer Cherry payment plans.
Searching for a same-day emergency dentist in Rancho Cucamonga? Alta Loma Dental Care treats toothaches, broken teeth, knocked-out teeth, infections and more, and we hold time in the schedule for urgent cases so you do not have to wait in pain. Call us during office hours (Mon–Fri, 9 AM–5 PM) and we will fit urgent cases in the same day whenever possible. For severe swelling, uncontrolled bleeding or facial trauma after hours, go to the nearest emergency room.
Call (909) 987-6268 now and we will prepare for your arrival.
What Counts as a Dental Emergency?
Not every tooth problem needs an urgent visit, but some do. A dental emergency is any problem that needs quick action to stop pain, save a tooth or keep an infection from spreading. Call us the same day if you have:
- A severe or throbbing toothache that will not settle, especially with swelling; this often means deep decay or infection. Our guide to toothache signs that mean you need a dentist explains what each symptom usually means.
- A knocked-out (avulsed) tooth from a fall, sports injury or impact; time is critical.
- A broken, chipped or cracked tooth with pain, sharp edges or an exposed nerve.
- A lost filling or crown that leaves the tooth sensitive and vulnerable.
- A dental abscess or swelling, possibly with fever, a bad taste or pus.
- Bleeding from the gums, tongue or cheek that does not stop with pressure.
- An object stuck between the teeth that floss cannot remove.
- Sudden, severe tooth sensitivity after an injury or with visible damage; see when tooth sensitivity is an emergency.
If you have difficulty breathing or swallowing, or swelling that is spreading toward your eye or neck, go to the nearest emergency room first. Those symptoms can mean an infection is spreading and need medical care right away.
Why Dental Emergencies Happen
Most emergencies come from accidents or from problems that were left too long. Biting down on something hard can crack a tooth, a cavity that was ignored can turn into an abscess, and old fillings eventually give up. Sports and playground falls account for many of the knocked-out teeth we see in children and teens. Regular exams and cleanings catch most of these problems before they become painful.
What to Do Before You Arrive
Stay calm and take these steps while you make your way to the office:
- Rinse your mouth with warm water to clear away debris or blood.
- Apply a cold compress to the outside of your cheek to reduce swelling and pain.
- Take an over-the-counter pain reliever such as ibuprofen if it is safe for you. Never place aspirin or any medicine directly on the gum or tooth; it can burn the tissue.
- Control bleeding by biting gently on clean gauze with steady pressure.
- Save any tooth or fragments and keep them moist.
- Call us at (909) 987-6268 so we can prepare for your arrival.
| Situation | What to do | What not to do |
|---|---|---|
| Knocked-out tooth | Hold it by the crown, rinse gently, try to reinsert it, or store it in milk or your saliva. Get to us as quickly as you can. | Do not scrub the root or wrap the tooth in tissue. |
| Broken or cracked tooth | Rinse with warm water, apply a cold compress and save any fragments. | Do not chew on that side. |
| Severe toothache | Rinse, floss gently to remove trapped food and use a cold pack on the cheek. | Do not put aspirin or other medicine on the gum. |
| Lost crown or filling | Keep the crown in a safe container. Temporary dental cement from a pharmacy can protect the tooth until your visit. | Do not leave the tooth exposed for long, and do not use household glue. |
| Abscess or swelling | Rinse with warm salt water and use a cold compress. | Do not ignore swelling or postpone care; infection can spread. |
Our Emergency Dental Services
We handle most urgent problems in one location:
- Treatment of toothaches, dental infections and abscesses
- Root canal therapy when the tooth can be saved
- Tooth extractions, including surgical removal
- Repair of chipped, fractured or cracked teeth
- Reimplantation of knocked-out teeth when we see you quickly
- Recementing or replacing lost crowns and fillings, including same-day CEREC crowns for eligible teeth
- Pain management and stabilization until definitive treatment
Each case is evaluated individually, and we discuss your options before we begin.
Why Choose Alta Loma Dental Care for Emergency Treatment?
1. Same-day appointments whenever possible. We hold time for urgent cases; call as early in the day as you can.
2. An experienced, calm team. Dr. Sidney Lee and our staff have handled many dental emergencies. You will get clear communication and gentle care from the moment you arrive.
3. Modern diagnostics. Digital X-rays and intraoral imaging let us find the problem quickly and treat it with minimal discomfort.
4. Comprehensive care under one roof. From repairing a broken tooth to treating an abscess, most emergencies are resolved here without a referral.
5. Convenient location. We are at 7283 Carnelian St in Rancho Cucamonga, easy to reach from Alta Loma, Etiwanda, Upland and Fontana, and our front-desk team helps with insurance and payment questions.
Emergency Dental Costs, Insurance and Payment
Emergency fees depend on what the tooth needs. Typical ranges at our office:
| Service | Typical range |
|---|---|
| Emergency exam (with X-rays as needed) | $100–$200 |
| Filling | $150–$400 |
| Extraction | $200–$600 |
| Root canal | $800–$1,500 |
| Crown | $1,000–$2,000 |
These are typical ranges; your written estimate depends on the exam, X-rays and your insurance.
- We accept most major dental insurance plans and verify your benefits before treatment.
- Flexible payment plans through Cherry are available for out-of-pocket costs.
- We explain the treatment steps and fees before proceeding, so there are no surprises.
Questions about insurance, payments or emergency fees? Contact us or call (909) 987-6268.
Guides & resources

Your dentist
Meet Dr. Sidney Lee, DDS
Dr. Sidney Lee and our team have extensive experience resolving dental crises. You’ll get calm, clear communication and gentle care from the moment you arrive.
“The care and empathy they provide are top notch! Plus the environment is very clean and calm!”
Questions
Emergency dental questions
Something else on your mind? Call (909) 987-6268 and our front desk will help.
What qualifies as a dental emergency?
Do you offer same-day emergency dental appointments?
What should I do if I knock out a tooth?
How do I manage dental pain until I can see a dentist?
How much does an emergency dental visit cost?
Are dental emergencies covered by insurance?
What happens during an emergency dental visit?
What if my dental emergency happens after office hours?
In pain? Call us now.
We hold time for urgent cases and will fit you in the same day whenever possible.
