Eat, smile, and live
pain-free again.
Compassionate, modern dental care in Diamond Bar — honest guidance, unhurried visits, and a team that treats you like a person, not a chart.
New patients welcome · Most PPO insurance accepted · 4-year warranty
Meet Dr. James Chon
Dr. Chon grew up in Southern California, earned his undergraduate degree from UCLA, and completed dental school at UNLV. After a life-changing mission trip to Guatemala, he shifted his path toward a career driven by purpose and patient care.
He is passionate about helping people feel like themselves again — restoring the ability to smile, eat, and live comfortably. With a warm, honest approach, every patient feels seen and supported.
UCLA · UNLV School of Dental Medicine · ADA member
Personalized treatments for real-life smiles
Whether you need a cosmetic refresh or want to restore your ability to eat pain-free, we guide you with honesty and care — start to finish.
Cosmetic dentistry
Stained teeth, chips, or spacing — from in-office whitening to full smile makeovers, we build confidence one tooth at a time.
Learn moreImplant dentistry
A long-lasting, natural-looking solution for missing teeth — placement, restoration, and full-arch treatment so you can eat and smile without hesitation.
Learn moreRestorative dentistry
Durable fillings, crowns, dentures, and bridges that bring function back to your bite — with every step explained so you feel at ease.
Learn moreFind your path in three taps
Answer a few quick questions and we'll point you to the right first visit — no account, no pressure.
What brings you in today?
How soon would you like to be seen?
Do you have dental insurance?
The $99 New Patient Experience
Exam, cleaning, and digital X-rays — everything we need to build your plan, for one simple price.
Your care, your way
Dentistry should be thoughtful, not rushed — and always personal. Here's what that looks like at In Line.
Personal relationships
You're more than a number. Our team gets to know you and tailors your visit to your goals.
Comfort-focused care
We take time to explain what to expect, so you feel confident every step of the way.
Implant & cosmetic expertise
Advanced training in implant placement and cosmetic enhancement — health and smile, together.
4-year warranty
We stand behind our work with a four-year treatment warranty.Kept active with routine six-month maintenance.
See the difference
From worn, spaced, or missing teeth to confident, healthy smiles — a few of the transformations we help make possible.
BeforeAfter
BeforeAfter
BeforeAfter
BeforeAfterRepresentative smile transformations · individual results vary
New to In Line? Let's make it easy.
Whether it's been six months or six years, now's the perfect time. Your first visit includes everything we need to build your plan — for one simple price.
Cleaning
A thorough, comfortable professional cleaning.
Exam
A complete exam with Dr. Chon.
X-Rays
Digital X-rays to see the full picture.
Tour our office
A calm, modern space in Diamond Bar, designed to make dental visits feel easy.
Loved by Diamond Bar
"Dr. Chon took the time to actually explain what was going on. No pressure, no upsell — just honest advice. First time I've left a dentist feeling calm."
"I put off the dentist for years. The team made the whole visit comfortable and the pricing was clear up front. Genuinely painless."
"Beautiful, modern office and a staff that remembers your name. My implant looks and feels completely natural. Highly recommend."
No insurance? No problem.
Our in-house plan through Kleer includes the preventive care you need and discounts on additional treatment — all for one low annual fee.
- Two cleanings per year
- Two exams with necessary X-rays
- One emergency visit
- Discounts on additional dental care
Find us in Diamond Bar
Diamond Bar, CA 91789
Schedule an appointment
Requested time isn't final until you receive confirmation from our office. Please don't submit any Protected Health Information (PHI).
Thank you
Your request has been received. Our office will reach out to confirm your time.