Ultrasonic Denture & Retainer Cleaner – 42 kHz Deep Clean, 200 ml Tank, 5-Min Timer – for Dentures, Aligners, Night Guards, Mouth Guards – Compact Non-Removable Tank Design – iSonic F3900

I’ve been very happy with this. I’ve used it daily for about 6 months. It definitely seems “stronger” (finger tingles) and to be more effective than another ultrasonic cleaner I bought a few months before this one. Once I tried this one, I gave away the older one. My aligner trays stay much more clear now. I do use this in conjunction with a 1/2 of an iSonic cleaning tablet. Its stainless steel lining is easy to clean. I just tip it forward into the sink and run the water around it. Operation is easy as it is just a double push on the power button to activate cleaning. There’s an automatic shutoff and you are advised not to run it over and over without letting it rest in between cycles. But, I rarely feel I want a 2nd cycle anyway.

I've been an avid user of this ultrasonic cleaner for my Invisalign trays for a remarkable seven years now, and it has truly been a game-changer in my dental care routine. From the very first day of use, I was impressed by its efficiency and reliability.This ultrasonic cleaner has consistently delivered outstanding results, ensuring that my Invisalign trays remain impeccably clean and free from any buildup or residue. Its ultrasonic technology ensures thorough cleaning, reaching even the tiniest crevices of the trays without any hassle.One of the aspects that truly sets this cleaner apart is its durability. Despite daily use over the years, it has remained robust and dependable, never faltering in its performance. The quality craftsmanship is evident in its sturdy construction and reliable functionality.Additionally, the ease of use of this device deserves commendation. It's incredibly user-friendly, requiring minimal effort to operate. The straightforward design makes it a breeze to incorporate into my daily routine without any hassle.Overall, I cannot recommend this ultrasonic cleaner highly enough for fellow Invisalign users. It has been an indispensable tool in maintaining the hygiene and longevity of my trays, consistently exceeding my expectations. If you're in search of a reliable and quality device to enhance your dental care routine, look no further – this ultrasonic cleaner is the perfect solution!Pros:Reliable performance for daily useExceptional durability, lasting for years without any decline in qualityEffortless operation and user-friendly designEnsures thorough cleaning of Invisalign trays, leaving them impeccably cleanCons:None to mention, this cleaner has surpassed all expectations!In summary, it deserves a resounding five-star rating for its exceptional performance and longevity. Invest in this ultrasonic cleaner, and you won't be disappointed!

I have worn an upper partial plate with 2 front teeth for over 50 years. My current partial is 42 years old. I have always brushed it several time daily. Yet over the years, I have noticed calcified material on either end, and stains on the front surface and between the two teeth. No amount of Efferdent has ever been effective in removing the calcification or staining. Year after year, the stains just keep getting worse.Desperate for a solution, I decided to try an Ultrasonic Cleaner. I purchased the iSonic F3900 with the hope it would do a proper job. Amazon delivered the unit in two days, and I read the instructions to make sure I used the device correctly. The F3900 came with a small packet of cleaning power. I wiped down the metal bowl with a damp cloth and mixed up a 1 cup batch of cleaning solution. The instructions said it was not necessary to use the plastic strainer, so I did not use it.I inserted my upper partial plate into the bowl of the F3900 and poured the solution into the bowl, stopping just before reaching the Max fill line. I plugged in the unit, closed the lid, and pressed the "On" button. The F3900 started to hum slightly, but if you looked into the bowl, you could see just the slightest agitation of the liquid solution inside the bowl. Compared to watching the foaming action of Efferdent, it didn't look as if anything was really happening. In 5 minutes, the unit turned itself "Off".The instructions say you can use the unit for up to 15 minutes before giving it a rest to cool the ultrasonic transducer. I go ahead and run the F3900 for one more 5 minute cycle, a total of 10 minutes. Even during the second cycle, it looks as if hardly any cleaning is taking place. After the end of the second cycle, I open the lid and remove my partial plate. I rinse the denture throughly under running water and begin my inspection.The calcification on either side of the teeth, GONE ! The dark stain between the two teeth, GONE ! The staining on the front surface of the teeth, GONE ! My 40+ year old partial plate looks as if it just came from the factory. WOW! I can not believe my eyes. After all the years of trying to scrub away the calcification and watching Efferdent try to foam away the stains, the iSonic F3900 has just performed a miracle on my denture. All I can say is WOW, WOW, WOW!

This was great, until it wasn't! I've bought two of these; 1st time in 2022 next time in 2023 as a gift, due to the great reviews.Neither time was a warranty offered - I always purchase warranties, when available for the items I'm buying.Of the two I purchased in 2022 & 2023, neither of them work!! I'm extremely disappointed, since this was rated pretty much the best at the time in 2022 & 2023.Companies need to do better and produce quality items.The company now offers a warranty when purchasing, but I'm extremely leery - will the item last as long as the warranty, or will I be wasting even more money on this product??I guess it's time to shop other options.

I used this ultrasonic cleaner several times a day, and it reliably got the job done. My only complaint is that the water tank is fixed to the base, which makes filling and emptying a bit awkward. Like others, my unit unfortunately stopped working after about 9 months of regular use. It performs great while it lasts, but durability may be a concern.