In-office and take-home whitening treatments supervised by board-certified prosthodontist Dr. Elaine Lu at The Loft Dental Studio.
Drugstore whitening strips and whitening toothpastes are everywhere, and they can help maintain a bright smile between professional treatments. But they cannot match the results of professional-grade whitening — and the difference comes down to three factors: concentration, fit, and supervision.
Professional whitening uses hydrogen peroxide or carbamide peroxide at concentrations significantly higher than anything available over the counter. These clinical-strength formulas penetrate deeper into tooth enamel to break down stubborn stains that surface-level products simply cannot reach. At The Loft Dental Studio, Dr. Elaine Lu selects the precise concentration based on your tooth condition, staining severity, and sensitivity level.
Custom-fitted trays are the second advantage. Over-the-counter strips use a one-size-fits-all design that often leaves gaps, causes uneven whitening, and allows gel to leak onto your gums. Professional trays are molded from impressions of your teeth, ensuring full and even contact between the whitening gel and every visible tooth surface. The result is uniform whitening with no missed spots and no gum irritation.
Finally, professional whitening is supervised. Dr. Lu evaluates your teeth before treatment to identify any issues — cavities, worn enamel, exposed roots — that could cause complications with whitening. She monitors your progress and adjusts the protocol as needed. Over-the-counter products come with no such safeguards, which is why many patients experience uneven results or unnecessary sensitivity when whitening on their own.
In-office whitening is the fastest and most dramatic option available. During a single appointment of approximately one hour, Dr. Lu applies a high-concentration whitening gel directly to your teeth while a protective barrier shields your gums and soft tissue throughout the procedure. The gel is applied in controlled cycles, breaking down deep stains layer by layer. Most patients see their teeth lighten by multiple shades in just one visit — making this the ideal choice before a wedding, job interview, or special event. The entire process is completed in our Costa Mesa office with immediate, visible results you can see as soon as you leave the chair. Cost: $400–$600.
For patients who prefer a more gradual approach or want to whiten on their own schedule, Dr. Lu creates custom whitening trays from precise impressions of your teeth. You receive professional-strength whitening gel — significantly stronger than anything available at a drugstore — along with detailed instructions. Simply fill the trays and wear them for 30 to 60 minutes daily over a period of one to two weeks. The custom fit ensures the gel stays in contact with your teeth evenly and does not leak onto your gums, which is the most common complaint with over-the-counter strip products. Take-home trays also give you control over the pace of whitening, which is especially helpful for patients with sensitive teeth who may want shorter sessions. Cost: $250–$400.
The combination approach delivers the most dramatic and longest-lasting results. You begin with an in-office whitening session for immediate improvement, then continue with custom take-home trays to deepen and extend the results over the following weeks. This two-phase method is what Dr. Lu recommends for patients who want the brightest possible outcome. The take-home trays also serve as a long-term maintenance tool — you can purchase additional whitening gel and do periodic touch-ups at home without needing a new set of trays or a return visit for a full in-office session.
| Whitening Option | Cost Range |
|---|---|
| In-office whitening (single session) | $400–$600 |
| Custom take-home trays with gel | $250–$400 |
| Combination (in-office + take-home) | $600–$900 |
Teeth whitening works best on natural teeth that have yellowed or darkened due to age, food and drink staining, or tobacco use. Surface stains caused by coffee, tea, red wine, and berries respond particularly well to professional whitening. Age-related yellowing — where the enamel thins over time and the darker dentin layer beneath becomes more visible — also responds effectively to professional-grade bleaching agents.
It is important to understand that whitening does not change the color of dental restorations. Crowns, veneers, bonding, and tooth-colored fillings will not respond to whitening gel. If you have restorations on visible teeth, Dr. Lu will discuss how whitening your natural teeth may create a color mismatch with existing dental work and what options are available to address it.
Patients with active gum disease, untreated cavities, or significant enamel erosion should address those conditions before whitening. Board-certified periodontist Dr. Chanook David Ahn works alongside Dr. Lu at The Loft Dental Studio, so any gum health concerns can be evaluated and treated in the same office before you begin whitening. Dr. Lu evaluates each patient individually to recommend the best approach. Patients with severe intrinsic staining — caused by tetracycline antibiotics, fluorosis, or dental trauma — may find that whitening alone does not achieve the desired result. In those cases, porcelain veneers are often a more effective solution.
The first 48 hours after whitening are critical. Your teeth are more porous immediately after treatment, making them more susceptible to staining. During this window, avoid coffee, tea, red wine, dark sodas, berries, tomato sauce, and any deeply pigmented foods or beverages. Avoid tobacco products entirely.
For long-term maintenance, limit your consumption of staining substances and rinse your mouth with water after consuming coffee or tea. Use a whitening toothpaste as part of your daily oral hygiene routine to help remove surface stains before they set. Brush twice daily and floss regularly — clean teeth stay brighter longer.
Most patients benefit from touch-up treatments every six to twelve months using their custom take-home trays. A brief touch-up cycle of two to three days is typically enough to restore your teeth to their post-treatment brightness. Because you keep your custom trays, you only need to purchase additional whitening gel from our office — no new impressions required.
If you are considering a comprehensive cosmetic treatment plan, teeth whitening is often the smartest first step. The reason is simple: once your natural teeth are whitened to their brightest shade, that shade becomes the target for any restorations that follow. Porcelain veneers, dental bonding, and new crowns can all be color-matched to your freshly whitened teeth, creating a uniform and natural-looking result across your entire smile.
Whitening after placing restorations creates the opposite problem — your natural teeth brighten but your crowns and veneers stay the same shade, producing an uneven appearance. By whitening first, Dr. Lu ensures every element of your smile makeover works together from the start.
At The Loft Dental Studio, Dr. Lu coordinates the timing of whitening with any planned restorative or cosmetic dentistry procedures. If you need gum recontouring or treatment for gum recession before cosmetic work, periodontist Dr. Ahn handles those procedures in the same office. This integrated approach — prosthodontist and periodontist working together under one roof — means your smile makeover is planned holistically rather than piecemeal across multiple practices.
Dr. Lu will evaluate your teeth, discuss your goals, and recommend the whitening approach that will give you the best results.
Call (714) 549-7030At The Loft Dental Studio in Costa Mesa, in-office professional teeth whitening costs $400–$600 per session. Custom take-home whitening trays with professional-strength gel cost $250–$400. A combination approach using both in-office treatment and take-home trays provides the most dramatic and long-lasting results. Call (714) 549-7030 for a personalized consultation.
Professional teeth whitening results typically last between six months and two years, depending on your diet, oral hygiene habits, and whether you use tobacco. Patients who avoid heavy staining from coffee, tea, and red wine tend to maintain results longer. Touch-up treatments with custom take-home trays every six to twelve months can extend your results indefinitely.
Most patients experience little to no discomfort during professional whitening. Some patients notice temporary tooth sensitivity during or shortly after treatment, which typically resolves within 24 to 48 hours. Dr. Lu uses desensitizing agents and adjusts the whitening concentration based on your sensitivity level to ensure a comfortable experience.
Yes. Professional teeth whitening supervised by a dentist is safe for tooth enamel. The whitening agents used at The Loft Dental Studio are FDA-approved and have been extensively studied. Unlike over-the-counter products that may be used incorrectly, professional whitening is applied under controlled conditions with protective measures for your gums and soft tissue.
Yes, patients with sensitive teeth can still benefit from professional whitening. Dr. Lu can customize the whitening protocol by using lower concentrations of whitening gel, shorter application times, and desensitizing treatments before and after the procedure. Custom take-home trays also allow you to control the duration of each session to minimize sensitivity.