Dr. Nelly Silva whitens with the KöR system: refrigerated gel, custom sealed trays and no lights or lasers, with longer plans for tetracycline and other stubborn stains.
Each pair shows the same teeth before and after a KöR whitening plan. Everyday yellowing, deep brown staining and gray banding respond at different speeds, so every plan starts with a record of your shade.
BeforeAfterBeforeAfterBeforeAfterBeforeAfterBeforeAfterBeforeAfterResults vary with the type and depth of staining
KöR is a professional whitening system built on three details: fresh gel, a tight tray seal and enough contact time for the gel to work. It does not rely on a short burst under a lamp. The gel works steadily over a series of nights at home, then a session in our office builds on that progress.
Peroxide gel slowly loses strength when it sits warm. KöR gel is kept refrigerated from the manufacturer to our office, and we store it cold until it goes home with you. Your trays are custom made from a detailed record of your teeth and fit closely along the gumline, which helps hold the gel against your enamel and keep saliva out.
At the in-office visit, Dr. Silva checks your new shade against the record taken at the start. You keep your trays afterward for touch-ups.
The parts of the system that matter most for your result.
KöR covers a wide range of staining, from everyday yellowing to the deep gray banding left by tetracycline. It suits adults whose natural teeth have darkened and whose teeth and gums are healthy, or will be once any cavities or gum inflammation are treated.
Whitening changes natural teeth only. Crowns, veneers and fillings keep their current shade, so we plan any replacements after you reach your new color.
BeforeAfterTetracycline staining sits deep inside the tooth, often in gray or brown bands that surface whitening barely touches. KöR has a dedicated protocol for these cases, with more nights of home whitening and more office sessions than a standard plan.
We offer two professional whitening systems in our Collegeville office, because the right one depends on your stains and your schedule. Here is how they compare with an over-the-counter kit.
| Option | How It Works | Time Frame | Suited To |
|---|---|---|---|
| KöR Whitening | Refrigerated gel in custom sealed trays, then an in-office session. No light or laser. | About two weeks of nightly wear for typical stains, longer for deep stains, plus an office visit | Stubborn, deep or tetracycline stains, and long-term touch-ups with your own trays |
| Zoom! Whitening | Whitening gel paired with the Zoom! lamp, applied in our chair | About an hour in our office | Up to eight shades brighter in one visit, often before an event |
| Store-bought strips | One-size strips or trays with milder gel, used without a dental exam | Varies by product | Light surface stains on healthy teeth |
Most plans move from consultation to finished shade in a few weeks. Deep stains take longer, and you will know your timeline before you start.
Dr. Silva examines your teeth and gums, records your starting shade and identifies the type of stain. That decides which KöR plan you need.
We take a detailed record of your teeth so your trays seal closely along the gumline. You go home with the trays, cold gel and clear instructions.
You wear the trays while you sleep, typically for about two weeks. Tetracycline plans run longer. The gel stays in your refrigerator between uses.
Back in our office, we complete your in-office whitening session and compare your new shade with your starting record.
Keep your traysTouch up at homeRefresh before big events
One KöR patient rarely smiled with their teeth showing. Our assistant Cindy worked with them through the plan, and after the first phase they greeted her at their next visit with a much bigger smile, ready for the next step.
"Very professional and welcoming. Takes time for questions and gives detailed explanations. I felt very comfortable and relaxed."
Lynn Maison, Google Review
Dr. Silva is a graduate of the Las Vegas Institute for Advanced Dental Studies, a postgraduate center for aesthetic and neuromuscular dentistry. She weighs your shade alongside tooth shape, gum line and existing restorations, so whitening fits the rest of your smile.
She earned her DMD at Temple University's Kornberg School of Dentistry, where she now teaches as a Clinical Associate Professor. Patients are welcome to call her Nelly.
The price of KöR whitening depends on the plan your stains need. A tetracycline plan uses more gel and more office sessions than a plan for everyday yellowing, so we give you an exact quote once we have seen your teeth. Payment plans are available to spread the cost.
Answers to what patients ask us most about the KöR system, from timing to tetracycline stains.
Most plans pair a few weeks of nightly home whitening with an in-office visit at our Collegeville office. Typical staining often needs around two weeks at home. Deep or tetracycline stains take longer, and Dr. Silva gives you a timeline at your consultation.
Peroxide whitening gel gradually loses strength when it sits warm. KöR gel is kept cold from manufacture until it reaches our office, and we store it refrigerated. That way the gel in your trays is fresh when you use it.
KöR has a dedicated protocol for tetracycline staining, and the case on this page is one of them. These stains need a longer plan with more home and in-office sessions than typical yellowing. How far your shade moves depends on the stain, so we assess it at your visit.
No. Whitening gel changes natural tooth enamel and dentin, not porcelain or composite. If you have restorations on your front teeth, some may need replacing after whitening so they match your new shade.
No. KöR relies on the gel and close-fitting trays rather than a lamp or laser. Patients who want a single in-office session with a lamp can ask us about Zoom! whitening instead.
You keep your custom trays, and occasional at-home touch-ups help hold your shade. Coffee, tea, red wine and smoking still stain teeth over time, so we show you how often to refresh based on your habits.
The cost depends on which KöR plan your stains need, since a tetracycline plan involves more gel and more visits than a standard one. We give you an exact quote at your consultation. Payment plans are available.
Book a consultation and we will record your shade, look at your stains and tell you which KöR plan fits. Patients visit us from Trappe, Royersford, Oaks, Skippack, Phoenixville and nearby towns.
Advanced Dentistry of Collegeville . 399 Arcola Road, Collegeville, PA 19426
