Friendly Staff. Beautiful Smiles. Welcoming Environment.

Welcome to Princeton Dental Designs

We appreciate the trust and confidence you have placed in us by choosing our practice. We are devoted to restoring and enhancing the health and natural beauty of your smile using conservative, yet advanced procedures.

This website is designed to provide valuable information, which we hope you will find useful in familiarizing yourself with our practice.  If there is anything you would like more information on, please feel free to give us a call so that we can better assist you.

We hope to see you soon!

We’ll Provide You With That Winning Smile!

Meet Our Team

  • Dr.
    Stephen Sim

    Dr. Sim was born and raised in New York and attended New York University for his undergraduate studies, where he received his bachelor’s degree. He successfully earned his doctoral degree from Temple University School of Dentistry in Philadelphia. Dr. Sim returned to New York and completed a general practice residency at the Montefiore Medical Center. 

  • Christina, Registered Dental Hygienist

    Christina graduated from Middlesex County College with her associate's degree in Dental Hygiene in 2016. She was the President of her class and was awarded leadership and health technology awards throughout her time at school. Christina has been with the Princeton Dental Designs team since 2017 and she loves her patients here so much. Her favorite part about being a hygienist is the opportunity to educate patients. Whether it be to improve your oral health or ease your worries about certain dental procedures, Christina's got your back. In her spare time, Christina enjoys lifting weights, swimming, playing escape rooms with her boyfriend, and cuddling with her dog Louie.

  • Miki, Dental Assistant

    Miki is our Dental Assistant and has over 20 years of experience in the dental field. She is passionate about educating our patients about oral health care as it relates to personal health care. She is bilingual in English and Japanese. She enjoys spending her free time working out. She does daily cardio, weight training, biking and barre among others. She also loves to travel, cook and spend time with her rescue dog Cinnamon.

  • Rosa Certified Dental Assistant

    Rosa is a Certified Dental Assistant with over thirty years of experience in the dental field. In addition to holding her dental x-ray license and CPR certification, she continues to learn by taking continuing education classes and keeping up to date with the latest in dental technology and infection control. Rosa is the proud mother of Julia, serving as Girl Scout leader in her spare time. She enjoys spending time with her family (including her doggies), trips to the beach, and reading.

  • Sheila, Front Desk Coordinator

    Sheila has recently moved to the Princeton area from Connecticut. She brings over 17 years of experience in the dental field working with dental insurance, treatment planning, and scheduling. In her spare time, she loves the arts (plays, operas, museums), antiquing, and anything involving the ocean. Sheila is looking forward to meeting and greeting all of our amazing patients!

  • Lisa, Office Manager

    Lisa has been working at Princeton Dental Designs for 5 years. She has an International Relations Degree from the University of Pennsylvania. Prior to working in the dental field, she worked in the fashion industry for over 10 years designing clothes. Now she prefers teeth over hemlines. Her favorite part of the job is getting to know our wonderful patients and helping to answer any questions they may have. In her free time, she enjoys spending time with her family and traveling to national parks.


What Our Patients Say About Us

    After trying a number of dentists in the area, Dr. Sim is the only one I really would recommend. His is gentile, knowledgeable, patient and conscious of each client's situation. His office is VERY clean and the staff members are attentive and very respectful. No negative aspects to report. He makes a trip to the dentist turn into a pleasant experience!

    Miriam M.

    Very professional staff at every stage. I am glad I found someone like this in the Princeton area and recommend their services highly.

    Neil M.

    An excellent dental professional and clinic with high quality and caring service.

    Honglan L.

    Dr. Sim has done a few treatments for me. Crown work, cavity filling, and teeth condition analysis in the last few years. He is the most trustworthy dentist in my experiences. He pays a great attention, taking time to listen and talk to his patients. He explains what needs to be done and options if any. My lower back tooth had a problem for a quite some time. He knew it has to be removed and get implant. However, he accommodated my request and tried to save the tooth. After having spent much time, he explained what he thought to be done. I listen to him because he is truthful and offer the best for his patient. I highly recommend Dr. Sim.

    Y K

    If I can give Dr. Sim and his staff higher than 5 stars I would. Every time I go for my appointments, I have nothing but pleasant experience. He always takes his time explaining the procedure and I never feel rushed. It's weird to think that I no longer mind going to dentist. If you are looking for a new dentist, look further!


    Attention to detail, Excellent Check Up and Cleaning! Dr. Sim is the most thorough and trust-worthy dentist I've been to. He doesn't rush or cut corners, trying to see as many patients as possible. He gives me the check up, tooth filling (oh, well!) and mouth guard fitting that I would want from a dental practice. My family have been going to this dentist 2x/yr for 10 years but I felt I must share a review today because he went the extra mile for me last week. My mother was visiting from another state and felt discomfort in her mouth. Dr. Sim readily agreed to see her to check for something serious -- and advised that we make an appointment for biopsy with her oral care professionals as soon as she got back to her home. He really takes care of my family!

    Sarah R.

Featured Articles

  • Your Rights and Responsibilities as a Patient

    Patient Rights You have a right to choose your own dentist and schedule an appointment in a timely manner. You have a right to know the education and training of your dentist and the dental care team. You have a right to arrange to see the dentist every time you receive dental treatment, subject to ...

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  • Crowns and Bridges

    Bridges Bridges are natural-looking dental appliances that can replace a section of missing teeth. Because they are custom-made, bridges are barely noticeable and can restore the natural contour of teeth as well as the proper bite relationship between upper and lower teeth.Bridges are sometimes referred ...

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  • Veneers

    Teeth that are badly stained, shaped, or crooked may be improved by a veneer placed on the surface of the affected teeth.Veneers are thin pieces of porcelain or plastic cemented over the front of your teeth to change their color or shape. Veneers are used on teeth with uneven surfaces or that are chipped, ...

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  • Invisalign®

    Invisalign's® invisible, removable, and comfortable aligners will give you the beautiful straight teeth you've always wanted. And best of all, no one can tell you're wearing them. Invisalign® is great for adults and teenagers. What is Invisalign®? Invisalign® is the invisible way to straighten your ...

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  • April 2022 Dental Newsletter

    The Importance of Preventive Care: Maintaining Good Oral Health Preventative dental care is a significant part of overall dental health, but it's often an afterthought. Our dedicated dentist sees many patients who don’t keep up with consistent preventative oral care and then must fix the problems ...

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  • Fillings

    Frequently asked questions: dental fillings Are dental amalgams safe? Is it possible to have an allergic reaction to amalgam? Is it true that dental amalgams have been banned in other countries? Is there a filling material that matches tooth color? If my tooth doesn't hurt and my filling is still in ...

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  • Sealants

    Sealants are liquid coatings that harden on the chewing surfaces of teeth and are showing a great deal of effectiveness in preventing cavities—even on teeth where decay has begun. The pits and grooves of your teeth are prime areas for opportunistic decay. Even regular brushing sometimes misses these ...

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  • Overview

    Pain can occur in any number of places in your mouth: teeth, gums, roots, the palate, tongue and jaw. Cavities are a common culprit causing pain. Untreated cavities can impact nerves because of infections of the tooth and gums. Impacted and abscessed teeth and sore jaws from teeth grinding are other ...

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  • Toothaches

    Simple toothaches can often be relieved by rinsing the mouth to clear it of debris and other matter. Sometimes, a toothache can be caused or aggravated by a piece of debris lodged between the tooth and another tooth. Avoid placing an aspirin between your tooth and gum to relieve pain, because the dissolving ...

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  • Scaling and Root Planing

    Some cases of acute periodontal (gum) disease that do not respond to more conventional treatment and self-care such as flossing may require a special kind of cleaning called scaling and root planing. The procedure begins with administration of a local anesthetic to reduce any discomfort. Then, a small ...

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Hours of Operation

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9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-4:00 pm