Fabricating Flexible Removable Partial Dentures?

Dr. T. asks:

flexstar-cover2.jpgI have seen advertisements for Flex Star V (Nobilium/Ticonium) for fabricating flexible removable partial dentures. It looks similar to Valplast (Valpalst International) which I have used with great success. Patients like these a lot better than their old metal framework removable partial dentures. Far more comfortable and much better aesthetics. I am thinking of trying a few flexible removable partial dentures using this material instead of Valplast. Any comments? Have any of you tried it?

76 thoughts on “Fabricating Flexible Removable Partial Dentures?

  1. I would love to hear about your success with Valplast because I have not had great results. Unless I put rests on the teeth, I have had periodontal issues.
    Also…impossible to repair.

  2. When you incorporate metal rests into the removable partial denture framework, how much of a metal framework do you need to support the rests? Do you also need metal major connectors? Do you need metal minor connectors to connect to the metal rests? Is it possible to have the metal rests without using much metal?

  3. You need enough metal to imbed in the Valplast material. You may use metal frameworks with Valplast processing for esthetic clasps. Repairing Valplast is not necessary. It does not break. If teeth have to be added it is not problem for a Valplast lab. If a lab tell you it can’t be added to means they can’t. A good accurate alginate impression in an oversized stock tray is actually best to get a good passive tissue impression. Impinged tissues during impressing can mean a nightmare of adjustments–which is not as easy as adjusting acrylic–but your lab can help with that.

  4. the problem with all these material is you can’t add any tooth or flange with the conventional self-cure acrylic by the chairside, and it can be difficult to explain to the patient who doesn’t want to wait a few working days.

  5. Can you use the Valplast dentures for Kennedy Class I and II situations where you have distal extension saddles?
    Do you have to use metal rests on the terminal abutments for these kinds of cases?

  6. Are those flexible materials biocompatible ? is there any research made on them? I did not use them before, if you can help me.

  7. hello friends, valplast is one of the greatest dental appliances in our time. there is no teeth prepping.no shots. the valplast partial just disapears.

  8. I have used Valplast extensively and have made enough mistakes to feel better about using it in the future (case selection is very important). A couple of issues:
    1. Patients love it because it does not show clasps and it is thinner than a regular acrylic provisional.
    2. It is great as an interim prosthesis (see “Boomer bridge- Kellar Labs) if you are not directly loading an implant.
    3. Best used in Kennedy Type III (“tooth borne”) situations. Trident can add some nice acrylic occlusal rests if you prepare sufficient space. Distal extension situations longer than one tooth tend to flex off the ridge under function, leading to a feeling of instability, decreased function and sore spots. Glidewell does a nice job of hybridizing Valplast partials with a metal major connector to provide needed stability.
    4. Watch out for soft tissue undercuts in areas of retention. These lead to extreme sore spots (since the Valplast is not often tooth borne it tends to flex around the retention in function). Also, I have seen some severe gingival recession occur from all this extra trauma. Periodontally, the clasp position (at the gingival crest) is potentially damaging to gingiva. Adjusting the clasp areas to relieve this can result in loss of retention.
    5. In general, I don’t recommend these for anything other than provisional situations. However, I have had several patients who have successfully worn their “provisional” for at least 3 years.

  9. Dr. T as for Flexstar and Valplast as a technician I get the same question from all my clients is how do I adjust this material? So I have researched and switched my clients to Duraflex which can be adjusted with a cross cut bur a very natural color and it allows the tissue to show through and blend into the mouth very nicely. As per your question both Flexstar and Valplast are quality materials however the adjustablity in your office is difficult with out the right tools. Flexstar is pretty much Valplast but a bit more ridgid. Which all this means is less sore spots under clasp for the patients. However Duraflex you can make really thin and it is still rigid enough to keep the partial stable enough to keep down the sore spots. All of the flexible materials on the market today can be added to and relined. Some of the comments listed I get all the time doctors you are correct on distal extentions causing sore spots this is a failure by the lab there is no need for metal reinforcement. The lingual of the partial should be thicker to stablize the appliace to reduce lateral movements of the partial. On uppers the design should be a ap bar since you do not have as much ridge as the lower. As for occlusial rest I do them however it is not necessary this is a tissue bourne partial so it is a fee that your paying for and it is not needed. These materials have been around since the fifties and have been modified and profected by various companies. Using this on a cast framework is fine to obtain the esthetics. If you or anyone have any questions on flexible materials I would be more than happy to share everything I know. Thanks for the chance and I hope this has helped with your questions.

  10. my valplast(upper) has 8 teeth now,recently lost crown and tooth that was used to secure,so now that side floats ,can avalplast be anchored withan implant,whats my option, please help

  11. Yes Does a Flexible Partial have to flex from saddle to saddle What would happen if a company would come out with a light cured flrexible Partial and eliminate all the stone and remakes and repairable. But not indestructable. What would you guys think of that ?

  12. I have a question for you techs and Dr’s What are the negatives about constructing a Flexible Valplast Partial and what are the positives. Do the saddles have to touch to be a good Flexible partial Or is it that the patient likes it because its light and feels like there is nothing in the mouth. What if you could construct a Flex partial and not have to use stone or heat up the material and not have to knock out the case and find stone enbedded into the plastic. What if you could wax up a Flex partial using a light cured material and get out what u see your putting into the light. Does the Flex partial have to be durable like the Heat cured ones . What if you could repair Flex partials? Here are some questions fopr you to answer for me?

  13. I don’t think many know the bad side of flexibles.As self cured acrylics,they stink.Properly cured heat cure acrylics don’t stink.Try rubbing a using flexible denture with stone bar and you can get that bad smell.I hate that smell and may be some patients feel the same.

  14. Case selection is the key. Valplast is indeed a great material, patients love them for esthetics but I still limit my use of valplast material to cases which are short span and tooth bounded. I wouldn’t recommend it for long span cases specially in free-end cases because the load will be concentrated on the residual ridge. Valplast is flexible, if you use it on a free-end case… you can imagine it will have a “diving board” effect.

  15. I have Valplast partial denture. The product smells plasticky in my mouth and mouth retains that oodor even when the denture is out. It never goes away. Can you tell me why and what I can do?

  16. For Darena: I am contemplating getting a valplast partial & am bothered by what you report. I assume you are aware of the product the company makes for cleaning your partial, and have been on the valplast website for their instructions. Is this not so?

    And have you gotten any help from your dentist regarding the offensive smell? Thanks.

  17. To Freyda, I did not know about the cleanser but have used Scope to soak it in (per my dentist) as well as over the counter cleansers. The real issue is my mouth smells of it after I take it out-even if I leave it out a day or two. My dentist said he never heard of this and he would call the company. I will keep you posted.

  18. I have worn a valphast partial (seven teeth/upper front) for three years. It wears very well and has never caused an odor in my mouth. I do get sore spots occasionally. I can tighten the partial by running it under hot water for a minute or so and push in where loose. I soak in efferdent nightly or a minimum of 15 minutes. I recommend using Arm & Hammer baking soda and hydrogen peroxide tooth paste or mix your own. You can also mix hydrogen peroxide in water for use instead of regular mouth wash.

  19. I requested specifically to have cu-sil partials. I now find I have a mouth full of metal. I signed a release before my first visit. Is it routine practice for a dentist to make the final decision regardless od the patient’s wishes?

    Do I have any recourse to get what I asked the doctor for?

  20. My dentist has recommended a 2 tooth Valplast denture for me. Can anyone give me an idea what that should cost?


  21. question for the technicians..
    is valplast the best material for flexible dentures out there? if not witch is the best option? open to any opinions. thanks

  22. Am missing the top back left teeth (3 back molars) due to failed bridge, root canals, abscesses and crowns that eventually killed these three teeth.

    I seem to be a bad candidate for implants (probable infections).

    Valplast sounds like a good alternative to avoid sacrificing any more teeth by attaching metal wires to the partials for me?

    BTW, 3 of my grandparents had full dentures by 45 years of age. One parent has two bridges and the other multiple partials on top and bottom. Sigh.



  23. I had emergency extractions early this year (3 on the bottom and 2 on the top). One of the extractions on the top was my left front upper tooth.

    The dentist gave me a metal partial on the bottom to compensate for my extracted molars. I’ve not had a problem with that.

    However, he gave me a Valplast partial on the top. I hate it. It’s uncomfortable and interrupts my speech. I am a vocalist and this has caused me so many problems. I also spend a lot of time on the phone at work and people have trouble understanding me.

    Also, it starts feeling “soggy” after a few hours and no amount of washing or rinsing seems to be able to fix that.

    I went to a different dentist to get a metal partial on the top. I’ve done research on the internet and found that other vocalists with Valplast partials have had problems, even after months of speech therapy, so they switch to metal and things are fine after that.

    The dentist is recommending instead an implant in the front and then a metal partial to cover the 2 missing back molars on the top. So, more money. *sigh*

    But, I suppose it’s worth it just to be able to pronounce words properly again.

    I’ve read that some people love their Valplast partials. Do some more research on them. For me, it’s really caused me problems.

    Thank you.

  24. Can you tell me about ultraflex denture and how long it is warranted for. I am thinking of getting this type of denture. Thank You. Mrs. Hoeppner

  25. Hi, I am considering a valplast partial. I am really afraid and I really can’t afford the $2000 that the dentist is asking for so I really hoped this would make me feel less ashamed of my appearance once he takes out 6 teeth. Can some one help me with the decision to get valplast or some other flexible partial.

    Totally Confused


  27. I have lost all but 2 upper teeth (2 top left molars remain). After reading various responses from readers on Valplast materials, I’m beginning to believe that I will have serious anchoring problems(partial coming loose while chewing), Also, will I be more vulnerable to sores on upper right side where there are no teeth on which to anchor the partial?

    In this case, would a metal partial be more stable? Which would be least expensive to create and maintain?

    Thanks in advance for your help. My dentist has taken impression. I received only yesterday the pamphlet on Valplast – thus the online questions.

  28. Can you use the Valplast dentures for Kennedy Class I and II situations where you have distal extension saddles?

    Do you have to use metal rests on the terminal abutments for these kinds of cases?

  29. I have a Valplast partial for my lower rear teeth. The open-ended clasps are standard. I am wondering if the partial would have a better fit if the clasps were close-ended. Has anyone ever experienced this? Has it ever been tested?

  30. I’m getting mine today – upper partial Valplast with two molars on left and one molar on right.
    I live in California and mine is costing me $ 1400.00

  31. I have the Valplast upper and lower, i am not happy with them i have sore all in my mouth and everytime I put the teeth in another sore come.I wouldn’t buy Valplast again. I want my money back or some new teeth,can you tell me what is the time frame for these teeth,I have only had the teeth three day, someone please tell me what can do

  32. I have been making the flexite partials for about 1 year now. There are some pros and cons when making a case selection:
    1. You must have adequate undercuts so that the denture material can move into an undercut.
    2. The flaps are flexable and should be exact in retention. It is difficult to adjust these areas for tighter retention.
    3. Regular acrylic can be added to these areas in order to tighten th fit.
    4. Rest seats are a must in acrylic in order to keep pressure on the boney ridge, and straight down the long axis of the tooth.
    5. Adding teeth or removing teeth from a flexite partial is impossible.
    Let me know what you think!

  33. my questionis? does the Valplast partial have any Laytex in it…my Dr seems to think that there might be, I get blisters under my plate if worn for more then 1 hour…please let me know….thanks karen

  34. When making a flexable partial you must have rest seats or the pressure will be on tissue and not on teeth. I place large rest seats on several teeth wherer I use acrylic. These have done verey well. My only problem is that the flexable partials are impossible to repair and most of the time must be remade.

  35. Just beginning this scary adventure –recommendation to extract my three lower front teeth, center one broken, split (dead?) and those on either side infected, much bone loss, implants not an option –apparently. Costs are exhorbitant even with a “discount” offered, no insurance. Suggestions are a “stay-plate” (cheapest -$875) or a flexible paertial –no idea how the doc prepares it, what it’s made of. I am oriented in holistic, natural, non invasive medicine: what on earth to do? I injured the central tooth 4 years ago, clean rigorously twice a day, etc. Much bone loss: how to stop that? Cure the inflammation? Stop further bone decay and save two of the teeth? THANKS MUCH in Santa Rosa CA

  36. Hi,
    I’m a clinical dental technician, denturist, and have worked with many flexible brand names on the market. It is not actually the material used that is important, but the amount of support offered by anchored teeth and the accuracy of the impression taken by the clinician. The dental laboratory also needs to have a good understanding of the surveying and block out of undercts when fabricating such flexible appliances.
    What is of utmost importance is the accuracy of the clinician taking the impression and deciding wether the situation is ideal for a flexible partial. Should this not be the case, then gum-stripping and
    continuoius irritation will occur.
    Please search for a clinician and technician who is passionate and dedicarted to provide the best flexible partial for you.
    I cannot stress this issue more: Please find a dental team that is meticulous in getting the flexible partial constructed perfectly for you!
    Please,..only accept what you want and not what you are given!

    Regards, Oliver S.A.

  37. Hi,
    I have been working with flexible partials exclusively for 17 years. My laboratory is manufacturing Valplast, TCS and Flexstar partials. We are located in the New York metropolitan area. We are also training other laboratories that buy the flexible machine system and want to learn the techniques.
    All these materials are unbreakable, they could all be relined and repaired, although it is a lab procedure.
    The dentists have to have a lot of patience for adjustments and the correct burrs.
    Also, all adjusted partials have to be sent back to the lab for repolishing otherwise sores will develop.
    Flexstar material is the newest and the easiest material to adjust and to work with.
    Proper diagnostic is also key to the succes of a flexible partial.
    Many labs process flexies but few have the experience to analyze and execute the proper design schemes for patients.
    Anybody with additional questiones please e-mail me at irinanegru@msn.com

  38. I just had flexible dentures made. I have not been able to wear them. They cut into my gums. My gums are so soar and have very tender spots now. It has made it impossible to put them back in. I do not know what to do. My dentist recommended the flexible partial. I had metal before with no problem. Would like to know if I have to accept this. Or have a new metal partial made at no cost.

  39. For Pam:
    Chances are your occlusion (bite) may be a bit off still. Or, the adjustments may need refinement (smoothing and repolishing).
    As far as your metal partial is concerned, depending on your anatomy, and the amount of replacement teeth,
    this is information that is crucial in making the right diagnoses.
    Most patients seem to like the flexies more because the aesthetic advantage and the unbreakability of the material.
    Don’t give up yet, after adjustments it usually takes about 2 weeks to get used to the new partial!
    Also run your fingers over the partial and if you feel any rough spots tell the doctor to send it back to the lab for repolishing.
    Good luck to you! Any other quetions e-mail me at irinanegru@msn.com

  40. When you incorporate metal rests into the removable partial denture framework, how much of a metal framework do you need to support the rests? Do you also need metal major connectors? Do you need metal minor connectors to connect to the metal rests? Is it possible to have the metal rests without using much metal?

  41. For Classic Video Games
    Incorporating metal rests,depends on many different scenarios.Basicaly, when a frame is made, the rests are included.If the patient requests limiting the amount of metal in his or her mouth, there are creative ways of accomplishing this. It all depends on the nature of the study model.

  42. you can make single tooth replacements instead of crowns ( that cost a lot more and the adjacent teeth have to be grinded ), TMJ splints, nightguards, snore appliance or full dentures if the patient is allergic to regular acrylic

  43. I just had made flexible prosthesis. I have not been able to use them. Cut into my gums. My gums are so fly and have very tender spots now. Has made it impossible to put them back in. I do not know what to do. My dentist recommended the flexible part. I had metal before without any problems. I wonder if I have to accept it. Or is that a new metal part made without charge.

  44. You probably have high points in occlusion that your dentist has to eliminate. If the bite is high, the partial will cut into your gums and give you sore spots.A lot of dentists start to grind down from the partial without checking the bite and this will only compromise the fit and retention.
    Also keep in mind that it takes about 2 weeks of adjustments till you get comfortable with new dentures.
    Go back to him for more adjustments.

  45. Customers tell us that FlexStar is much easier to adjust and finish as compared to Valplast. This is because the melting point of FlexStar is higher than Valplast… therefore the material is not as prone to melt under frictin from burs or polishing wheels. Try it for yourself and see.

  46. Before you make the decision to buy a Valplast or any other thermo plastic resin machine, research other options like TCS based in California or Flexstar by Nobilium. They are all viable choices. Choose one that fits your needs best. Good luck!

  47. I have a flexble back partial and my front bridge with two teeth broke off. My question is, can I have two teeth added to the flexible partial or can I get a whole new flexible partial with all the same teeth plus the two added.

  48. You can add as many teeth as you need to some flexible materials. ( valplast, TCS, Flexstar ).
    However if your partial is more than 5-7 years old it would be a good ideea to have a new one made for a better fit.

  49. I need a new flexible partial and to have two teeth added to the front on this partial. Is this posible?

  50. I need to decide on which flexable partial is the most comfortable, valplast, TSC or flexstar, lower front 4 teeth, please advise me, thank you for your time…

  51. I need to have a bottom lower partial plate made. NON-METAL. I have a quote for Flexite. Is this a good material plate? Are there any bad features to this?

  52. Not attaching-just requesting update info. Which is the best for a bottom lower plate. Have to replace metal one as this metal is now toxic to me.

  53. The Valplast website claims to have been providing people with an aesthetic, comfortable and affordable way of replacing missing teeth for over 50 years now.since 1953. Millions of people have already discovered the exceptional benefits that Valplast can bring to their appearance and confidence.

    I have used Valplast in the past but have not really discovered the exceptional benefits they claim to offer on the website. I can’t complain to much becuase there product has made a diference but there is room for improvment. Does Flex Star offer much improvment over Valplast?

  54. What can help with the bad smell in your mouth. I have tried everything. I have a partial valplast denture. Please help!!!!

  55. This is my 39th day with a Valplast partial. Have worn dentures for 30 years and this is by far the worst experience I have had. The good news is the material is flexible – the bad news is the material is flexible. Adjustments to relieve pressure are useless as the product readjusts itself to put pressure back on sore spots. If you have protrusions on bone please don’t let any dentist talk you into trying these. After my 6th adjustment today the dentist refused to refund my money. After the adjustments the denture is covered in burs – is she using the wrong equipment?

  56. Sunflex Partials are certainly an alternative you can look into when prescribing a flexible partial denture. The thermoplastic resin is denser than Valplast, so it does not stain as easy or become brittle. You can actually add teeth and clasps to the partial at a later time, and chairside adjustments are also possible with a kit of burs offered by the manufacturing lab. If you need a rebase or reline, you just have to send the partial to the lab. The resin is guaranteed for life for breakage, and you can also use it in combination with a metal frame for those cases with a free end saddle for enhanced stability.
    Do some research on all the flexible options available in the market. Valplast has been around for a long time, but there are other options that have proven far superior in terms of comfort, stability and adjustability.

  57. I just got my Valplast upper partial, I have serious TMJ problems. After reading all stuff about Valplast, I have already send so much money…I hope this partial works for me. Any advice

  58. To get rid of the bad smell and all stains I use the TCS denture cleaner. Works perfectly for me. First I cleaned my partial overnight and then bought the sonic cleaner which is much faster. When I called them they said is was specifically made for these nylon parcials.

  59. i am a lab owner in the uk and i use flexite from talladium it comes under variations of the flexite name such as plus etc,like with all dental materials the instructions for processing and designing must be adhered to also it is not a direct replacement for chrome,choosing the right case is very important consider the paitents history what have they worn in the past did that work?would a flexible denture improve the paitents life?…as for repairing adding to etc ,the process is simple the case has to be invested and put thru the injection process the material bonds to itself perfectly, there is another method which involves crazy glue and cold cure but i would,t recomend it.

  60. I just went to Mexico to get flexable particals (4 top and 4 bottom teeth). They cost about the same as what the dentist wanted for flipper particals here in the states and they look alot better. I haven’t had them long enough to say if they wear well.

  61. I have only had my Valplast partials 1 day and my mouth is so sore I had to take them out. I am physically sick from all the sores in my mouth. I went to the dentist twice in 1 day so she could make some adjustments but she does’t even know what is causing the problem. Inside of my cheeks and around my lips broke out with bumps. Both side of my tongue have blisters. Inside both cheeks are cut and blistered. Under the base of my tongue and the glands located there are so sore and painful now. My tongue has small red bumps on it. Inside of my mouth feels swollen. My mouth is so sore and painful I barely can swallow. I had worn metal partials for 30 years prior to the Valplast with little to no problems. Has anyone ever heard of anything like this after getting Valplast partials?

  62. What has happened most likely is that you are allergic to the nylon. Check with your allergy doctor because it looks to me that that is your problem. If you are not allergic to the nylon then ask your doctor about TCS instead of Valplast, this could help you.

  63. I have used Valplast in the past but have not really discovered the exceptional benefits they claim to offer on the website. I can’t complain to much becuase there product has made a diference but there is room for improvment. Does Flex Star offer much improvment over Valplast?

  64. I have a upper metal partial that broke off on the front. The partial has 5 teeth, and 3 broke off. I am pretty sure they broke due to wear from my bottom teeth. I have a severely close bite. Do you think the flexible partial is the best option for me due to the close bite? If so which do you consider the best type of plastic to use? I have 3 teeth on the left side to connect to and 3 on the right side of which 2 on the front are together with a gap to the next tooth. Any information you give me will be greatly appreciated. My bottom teeth in the front are longer than the surrounding teeth. This is because of grinding my teeth at night. This last partial that just broke lasted 7 years and 2 months. I am 65 years old so this new partial will likely be my last so I want the best.

  65. I am considering Duraflex dentures for a partial upper bridge. Does anyone have any experience with Duraflex? Don’t know if the same as Valplast but sounds like another brand name of the same technology.

  66. I have an upper partial consisting of 2 front teeth and 2 side teeth on each side. My warranty was for a year. There is a rough spot right above the tip of my tongue that drives me crazy. The dentist and the dental makers who sent it to Mexico to be made have polished it, but the rough spot keeps coming back. When you hold it up to the light, it looks like a small pin hole, but they say there is no hole. Is there any way I can correct/polish this rough spot.

  67. I would recommend TCS Unbreakable. This nylon has a excellent memory, it is unbreakable and light weighted. It feels great in your mouth!!!

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