Polanight teeth whitening is a dentist-dispensed, take-home whitening system by SDI (Southern Dental Industries), an Australian dental manufacturer established in 1972. It uses carbamide peroxide in a pH-neutral, water-based gel applied overnight inside custom-fitted trays – an approach backed by multiple clinical studies as safe and effective for non-vital tooth whitening.
What is polanight teeth whitening and how does it work?
Polanight teeth whitening gel works by releasing carbamide peroxide slowly through a custom tray while the patient sleeps. Carbamide peroxide breaks down into hydrogen peroxide and urea, with the hydrogen peroxide penetrating enamel to oxidise discoloured molecules within the tooth structure.
Unlike generic OTC strips, this system uses a neutral pH formula — a meaningful difference. Research published in the Journal of Dentistry (2012) found that acidic whitening agents cause measurable enamel surface changes with repeated use. SDI’s neutral pH gel is specifically formulated to reduce this risk while maintaining whitening efficacy.
Polanight teeth whitening concentrations: 10%, 16%, 22% and 35%
SDI produces this gel in four carbamide peroxide strengths. Selection depends on staining severity, sensitivity history, and the treating dentist’s recommendation.
| Strength | Wear Time | Course Length | Best For |
| 10% | 6–8 hrs (overnight) | 10–14 nights | For sensitive teeth or beginners |
| 16% | 4–6 hrs | 7–10 nights | Standard cases — most prescribed |
| 22% | 2–4 hrs | 5–7 nights | Quickly treats moderate staining |
| 35% | 30–60 min | 3–5 sessions | Stubborn staining, short-course |
Polanight teeth whitening 10%
Polanight teeth whitening 10 carbamide peroxide is the gentlest option. At this level, approximately 3.3% active hydrogen peroxide is released across a full overnight session — enough for consistent whitening over 10–14 nights without triggering sensitivity in most patients.
It is the standard recommendation for anyone with receding gums, dentinal hypersensitivity, or no prior whitening history. Because the active ingredient releases gradually across 6–8 hours, the total whitening effect over a full course is comparable to higher concentrations; results simply take a few more sessions to accumulate.
Pola night teeth whitening 16%
Pola night teeth whitening 16 is the most commonly prescribed take-home concentration worldwide. The 4-6 hour wear window fits naturally into a late-evening routine — patients can load the trays after dinner and remove them before sleeping, without committing to a full overnight session.
A clinical study by Meireles et al. (Dental Materials, 2008) found that pola night teeth whitening 16 produced faster whitening results than 10% with comparable safety in terms of enamel microhardness and patient-reported sensitivity. For most patients presenting with standard extrinsic or age-related staining, this concentration delivers the best balance of speed and tolerability.
Polanight teeth whitening 22%
Polar night teeth whitening 22 suits patients with moderate-to-stubborn staining who want a shorter nightly commitment. At this concentration, only 2–4 hours of wear per session is needed, but it is not the first choice for patients with existing sensitivity.
Per the instructions for this strength: do not exceed 4 hours per session, and take a 24-hour break if tingling or discomfort occurs. A desensitising gel applied in the tray for 10–15 minutes before or after each session can significantly reduce post-treatment sensitivity for those who need it.
Polanight teeth whitening 35%
Polanight teeth whitening 35 is the highest available take-home concentration from SDI, designed for deep or long-standing staining cases managed under close dental supervision. At just 30–60 minutes per session, it offers the shortest daily commitment — but the higher active concentration also means greater sensitivity risk. Most dental professionals reserve this strength for cases where standard concentrations have not achieved the desired shade after a full course, rather than as a starting point.
Polanight teeth whitening instructions: Step-by-step
What’s inside the kit?
A standard polanight teeth whitening kit from a dental clinic includes:
- 3–4 syringes of whitening gel (each ~3 mL, enough for 3–4 full applications)
- Custom-moulded upper and lower whitening trays
- Patient instruction leaflet and storage case
Polanight teeth whitening refills – replacement syringes – are available separately and compatible with existing trays, making periodic top-up treatments straightforward without repeating the full kit cost.
Each syringe should be stored in the refrigerator between uses. Refrigeration slows the natural degradation of carbamide peroxide and preserves the gel’s potency through the full treatment course.
If the gel appears watery, discoloured, or has passed its printed expiry date, it should not be used – expired carbamide peroxide loses efficacy and may cause uneven results. Patients who purchase the gel online from unverified sources risk receiving product that has been stored incorrectly or is approaching expiry, which is why authorised clinic channels are the recommended purchase route.
Pola night teeth whitening how to use
These polar night teeth whitening instructions apply to all concentrations; only the wear time changes.
Step 1 – Brush and dry
Brush and floss before loading the tray. Lightly pat the tray interior dry – moisture dilutes the gel and reduces active contact time.
Step 2 – Load the gel
Dispense the gel into the front-facing compartments – a dot the size of half a grain of rice per tooth pocket. Overfilling causes gel to overflow onto the gums without improving whitening and is the most common patient error.
Step 3 – Seat the tray
Press gently but firmly against teeth. Wipe away any excess gel that passes the tray border with a clean fingertip.
Step 4 – Wear for the correct time
Follow the concentration-specific wear time in the table above. Extending wear time does not accelerate results but does increase sensitivity risk.
Step 5 – Remove and rinse
After the session, remove the tray, rinse with water, and brush gently. Clean the tray under cold water (heat distorts the plastic) and air-dry before storage.
For the 22% strength specifically: the 4-hour limit is a hard ceiling, not a guideline. If sensitivity develops mid-session, remove the tray immediately and rest for 24 hours before the next application.
Pola night teeth whitening before and after: What to expect
Pola night teeth whitening before and after outcomes vary by stain type and treatment consistency:
| Stain Type | Response | Typical Shade Improvement |
| Coffee, tea, wine, tobacco | Fast | 3–6 shades in 5–7 nights |
| Age-related yellowing | Good | 4–8 shades over full course |
| Fluorosis (mild) | Moderate | 2–5 shades; may need extension |
| Tetracycline/antibiotic | Slow | Gradual; requires dental supervision |
A 2016 systematic review in the British Dental Journal confirmed that take-home carbamide peroxide systems produce clinically significant whitening with low adverse event rates when used as directed – the category polanight 16 teeth whitening gel falls into.
Results can last a long time but are not permanent. With routine dietary habits, most patients schedule top-up sessions using the refill syringes every 6–12 months to maintain brightness.
To slow re-staining between courses, dental professionals typically advise reducing intake of highly pigmented drinks in the 48 hours immediately after each session – this is when the enamel surface is most porous and susceptible to new staining. Using a fluoride or nano-hydroxyapatite toothpaste during the course also supports enamel remineralisation between nightly sessions.
Buying polanight teeth whitening online
Polanight teeth whitening buy online is available through SDI-authorised dental clinics and verified distributors – SDI does not sell direct to consumers. When purchasing teeth whitening gel polar night products online, verify the following:
- The seller appears on SDI’s authorised distributor list (sdi.com.au)
- Syringes are within their expiry date (carbamide peroxide degrades over time)
- Cold-chain storage has been maintained — the gel should be refrigerated
Purchasing through an unverified seller introduces real risks: product stored at room temperature loses potency over time, and concentration labelling on counterfeit or grey-market syringes may be inaccurate. Sourcing from an authorised distributor ensures the full clinical benefit of the system.
For patients in Ho Chi Minh City researching options, Teeth whitening in Ho Chi Minh City provides independent reviews and guidance on where to access pola night teeth whitening 16, polanight 22, and the full teeth whitening kit polanight range through verified local providers.
Frequently asked questions
What is polanight teeth whitening?
A professional carbamide peroxide whitening gel by SDI Australia, applied overnight in custom dental trays under dentist guidance.
Which concentration – 10, 16 or 22 – should be used?
10% suits sensitive teeth and beginners; 16% is the standard choice for most patients; 22% is for moderate staining with a shorter nightly commitment. A dentist should confirm the right strength.
How long does polanight teeth whitening take to show results?
Most patients see visible brightening within 3–5 nights at 16%; a full course runs 7–14 nights depending on concentration.
How much gel is needed per session?
A dot the size of half a grain of rice per tooth compartment – overfilling does not improve results and irritates the gums.
How long do results last?
Typically 12-18 months with normal dietary habits; polanight teeth whitening refills are used periodically to maintain the result.
Is polanight safe for sensitive teeth?
Yes – polanight teeth whitening 10 with its neutral pH is specifically suitable for sensitive teeth. Patients with severe sensitivity should consult a dentist first.
Where can teeth whitening syringes polanight be bought in Vietnam?
Visit Teeth Whitening Ho Chi Minh for independent reviews and recommendations on authorised providers in Ho Chi Minh City.
What is the difference between polanight and polawhite?
Polawhite teeth whitening gel is SDI’s daytime formula for 30–60 minute sessions; polanight is designed for extended overnight wear.
Conclusion
For anyone considering take-home whitening, polanight teeth whitening stands out as one of the most clinically validated options available – developed by a specialist dental manufacturer, dispensed through licensed professionals, and backed by peer-reviewed research spanning over two decades.
Whitening outcomes are not permanent, but they are long-lasting and easily maintained. With the custom trays preserved and polanight teeth whitening refills available on an as-needed basis, touch-up sessions are straightforward and affordable compared to repeated in-chair treatments. The system rewards consistency: patients who complete a full course and manage their dietary habits in the days following treatment consistently report the best and most durable results.
