I just used this unit for the first time yesterday evening. The unit quietly hums but there is no movement of the water. Is the unit defective?

You don't see movement. However, put one finger in the unit while it is on and you should notice the vibrations. If you don't, then something is wrong. But just looking at it, no, the water doesn't move.

Can this be used with a flex denture? I can't use toothpaste, mouthwash or cleaning tablets because the denture will change color.

I use it on my flex bridge with Val-Clean made for this type of denture. Buy it at valclean.com for ½ the price on Amazon. I've been using it for many years now. They get clean and still flexible.

When this item is used to clean a night guard, should it be used every day? I typically just brush my night guard with my toothbrush & toothpaste every morning, but do a weekly soak in a glass with denture cleaner. Do you add any sort of cleaning agent when using this item? Thanks!

I use mine for my night guard. My dentist says all of these 'expensive' cleaners are unnecessary. Use distilled water and 1/4 teaspoon of baking soda and clean your retainers or dentures every night. I do this and once a week I brush my retainers with my toothbrush... they have been very clean and undamaged for years. Saves money and it works... I like a win-win.

Has anyone owned this for over 2 yrs. From the review, it breaks down too easily. Anyone know model that will last me more than 5 yrs for

I bought mine July 2018, and it broke Oct 2020. I didn't use it frequently either. It does a great job but isn't durable. So, based on my experience, it will not last even 2 years.

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iSonic F3900 Ultrasonic Denture/Aligner/Retainer Cleaner for All Dental appliances (Machine Only)

iSonic F3900 Ultrasonic Denture/Aligner/Retainer Cleaner for All Dental appliances (Machine Only)

Product ID: 1420175

Details

Brand
iSonic
Power Source
Corded
Product Benefits
Deep cleans
Special Feature
Timer
Unit Count
1 Count

🔊42 kHz ultrasonic power

⏲️5-minute auto shutoff timer

🛡️durable leak-proof stainless steel tank

68363CFA

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Description

✨ Ultrasonic precision for your daily dental glow-up! 🦷

COMPACT POWERHOUSE - Sleek 200 ml stainless steel tank fits all dental appliances while staying whisper-quiet and leak-free.
BOOST CLEANING WITH TABLETS - Compatible with iSonic CTAR01 cleaning crystals for an elevated, professional-grade clean.
DEEP CLEAN ZERO COMPROMISE - 42 kHz ultrasonic waves blast away stains, buildup, and odors for a pristine smile.
EFFORTLESS ONE TOUCH OPERATION - Simplify your routine with a single button and automatic 5-minute shutoff—clean smarter, not harder.
BUILT TO LAST DESIGNED FOR YOU - Hard-wired, non-removable tank ensures durability and minimal maintenance over time.

The iSonic F3900 is a compact, corded ultrasonic cleaner operating at 42 kHz, designed specifically for dental appliances like dentures, retainers, and aligners. Featuring a 200 ml stainless steel tank with a 5-minute automatic shutoff timer, it delivers powerful, quiet, and leak-proof cleaning. Compatible with iSonic cleaning tablets, it offers a durable, easy-to-use solution for maintaining oral hygiene and appliance longevity.

Specifications

ASIN	B00HLBW61C
Additional Features	Timer
Best Sellers Rank	#28,927 in Health & Household ( See Top 100 in Health & Household ) #57 in Denture Cleansers
Brand	iSonic
Brand Name	iSonic
Color	Machine Only
Customer Reviews	4.2 out of 5 stars 5,559 Reviews
Global Trade Identification Number	00804879261940
Included Components	plastic tray, sample iSonic White denture cleaning crystal, iSonic AlignerClean
Item Dimensions	7.1 x 5 x 5 inches
Item Weight	2 Pounds
Manufacturer	iSonic
Manufacturer Part Number	F3900
Manufacturer Warranty Description	One-year warranty for parts and labor. Customers within the continental USA pay one-way shipping, customers outside of continental USA pay 2-way shipping for warranty repairs., Only Amazon and Joy4Less are our authorized dealers on Amazon for this product. Purchasing from unauthorized dealers voids the warranty automatically.
Material Type	Electronics, Plastic, Stainless Steel
Model Name	isonic_f3900
Model Number	F3900
Power Source	Corded Electric
Product Benefits	Deep cleans dentures, aligners, retainers, night guards, mouth guards etc.
Recommended Uses For Product	Daily Cleaning, Deep Cleaning
Special Feature	Timer
Tank Volume	0.2 Liters
Target Use Body Part	Teeth
UPC	662712236087 804879261940
Unit Count	1 Count

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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68363CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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