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Frequently Asked Questions

Please select from the categories below:

  • Why are my impressions distorted?
    Some impressions may have drags, bubbles or holes in them. There are occasions when there is a slight distortion which can only be detected when we have another impression to compare it with. Always insure that the impression includes all the teeth and covers the whole palate. ​ Please double-check the impressions before it leaves the practice. If in doubt please take more than one impression.
  • What is the turnaround time?
    Retainers: 7 days Clear Aligners: 14 days Inman Aligner: 14 days Orthodontic Removable Appliance: 10 days Please contact us for details on our 3 day and 24hr services.
  • For implant drilling guides, what do I need to provide NimroDENTAL with?
    To fabricate your drill guide we require: a CT scan, study models or an intraoral surface scan, the brand of implants system you intend use & the sizes of the drills used and sleeve (if required).
  • What impression material should I use?
    Please always send us an upper and lower silicone impression and a wax bite. We always need an opposing arch to see if there is room for movement.
  • How can NimroDENTAL ensure the implant guides are accurate?
    We merge your patient’s CT scan with the surface impression/scan meaning we plan the implant placement based on bone density, and print a highly accurate drill guide with bone level or teeth as reference.
  • How should I send my impression to you?
    We recommend you send the impressions to us via Special Delivery or recorded post/courier so the parcel is traceable. If you are sending us a parcel from outside the UK, we recommend that you send the case via recorded post.
  • What software is used to design the drilling guide and implant placement?
    We use CoDiagnostix software which can be used for many implant brands.
  • Where can I print postage labels?
    Due to the loss of many packages while posting using FreePost, we have had to start using a different system. To obtain your postage label please go to : This new method means that now, we and you can track the package to ensure we always receive your package and provide the best service.
  • I would like to align my patient’s teeth but I am not sure how or what appliance to use?
    Please email photos (front, occlusal, ‘chin-up’ and profile) or post impressions and indicate what the patient is concerned about. We will contact you and advise different options for treatment.
  • What is a composite attachment/anchor?
    It is a piece of composite attached to the tooth in order to act as a grip or anchor on the tooth for the appliance.
  • How do I open the bite?
    To open the bite, place composite on the 6’s or 7’s of the opposing arch. It will take between 2-6 months for the teeth to over-erupt using the Dahl principle, creating an opening of around 3mm at the front. After this you can remove the composite.
  • My patient has a nickel allergy; can they wear your appliances?
    Our Inman Aligners and bonded retainers contain nickel. We can make a bonded retainer with nickel free wire or recommend an alternative appliance to align the teeth using nickel free wire. Please always write clearly on the lab sheet if your patient has nickel allergy.
  • What services does your 3D department provide?
    Our 3D department provides digital scanning, 3D printing and treatment planning. If you have an Intraoral scanner this will enable you to send digital impressions saving time and money.
  • Can you make a retainer at the same time as an Inman or Clear Aligner?
    Only if it is not for the same arch, we cannot make both appliances from the same impression. We will make the Inman Aligner first in order to achieve alignment; and then we will require a new impression with a new lab sheet in order to make the retainer.
  • Do you have a Clear Aligner course?
    Yes, NimroDENTAL do provide an online Clear Aligner course. It may be ordered through our online store. Although you do not have to do a course to treat patients with NimroDENTAL Clear Aligners, we do recommend purchasing it. This course has been qualified for the equivalent of 3 CPDs, and once the questions have been answered correctly, NimroDENTAL will issue a certificate.
  • How long does the patient wear each Clear Aligner for?
    Each Clear Aligner needs to be worn for two weeks.
  • The Clear Aligner doesn’t fit, what do I do?
    You will need to take a new impression and send everything back to us along with a lab sheet explaining the issue.
  • What is the thickness of the Clear Aligner?
    The Clear Aligners are 1mm thick.
  • What is a stent?
    A stent is a guide to help you place a composite anchor on the tooth. To bond the composite you must: Etch and seal the tooth surface Fill the pocket of the stent with composite Fit over the teeth Light cure the composite to the tooth Remove the stent and polish any excess.
  • I have purchased a package and finished the first set of Clear Aligners. Do I have to send a new impression for the remaining aligners?
    You will need to ensure that the final aligner of the first set fits and the teeth are in desired position. As long as the treatment is progressing as expected, you will not be required to take a new impression. Please send written confirmation to the lab indicating that you would like to proceed with the next set of Clear Aligners.
  • Can the patient wear the last Clear Aligner as a retainer?
    We do not advise that you use a Clear Aligner in place of a retainer because the Clear Aligner will wear and not last long.
  • Are Invisible Aligners the same as Clear Aligners?
    Clear Aligners are also known as Invisible Aligners, Clear Braces and Invisible Braces but they are the same type of appliances.
  • When should I do IPR?
    On the first appointment and then at each stage after.
  • How does the IPR guide work?
    An explanation of the Clear Aligner guide is as follows: It will illustrate the total amount of IPR per contact for each stage The guide is split into stages depending on the number of Clear Aligners needed Each stage has a set number of Clear Aligners which will be clearly indicated The lines on the diagram relate to the size of the IPR strip/disc There is a colour key for reference.
  • How long does the patient have to wear it for?
    It depends on the case but the average duration is 6-8 weeks.
  • How often and how much does the patient have to turn the screw?
    The patient needs to turn the ‘Expander’ an average of twice a week (every 3-6 days) with the supplied key.
  • Why can’t you predict how many Clear Aligners my patient needs before expansion?
    The patient needs expansion first because we cannot predict how compliant the patient will be or exactly where the patient’s teeth will be after expansion. Once the patient has finished with expansion we will need a new impression to assess how many clear aligners the patient will need.
  • How often do I need to see the patient?
    Even though the patient turns the screw themselves we would still recommend seeing the patient at regular intervals in order to monitor the treatment.
  • Can I order brackets from NimroDENTAL?
    We can supply a wide range of labial and lingual brackets, arch wires and accessories.
  • What is the procedure for digital bracket indirect bonding?
    Models are scanned, teeth aligned, virtual brackets placed, set up emailed to dentist for approval, transfer trays made and brackets inserted into the transfer tray.
  • What is the difference between the essix retainer and long term retainer?
    Essix Retainer: 1mm thick. Clear material. Easy to remove and clean. Worn full time for 3 months and then at night after. 3 month warranty if the appliance breaks. Long term: 2mm thick. Clear and strong material. Recommended for patients with a deep bite. Recommended for patients who cannot wear a fixed bonded retainer (allergy to metal). Easy to remove and clean. Cut buccally half way from 3-3 and above gingivally from 4’s to molars. Nightwear only. Correction of small relapses possible. Better resistance to bruxism.
  • What is the thickness of the wire for bonded retainers?
    The standard twistflex bonded retainer is 0.0175. We do have other thicknesses if we agree it is necessary or if requested.
  • Do you make a placement jig for bonded retainers?
    The bonded retainer is supplied with a custom made positioning jig that allows easy hands free bonding to the teeth.
  • Do you only invoice by email?
    Yes we do. Please make sure you have supplied us with the correct email address and that you have added us to your address book. An unpaid bill may incur late payment fees and may delay your future cases. Please see the terms and conditions for more details.
  • When will I receive my invoice?
    You will receive the invoice at the end of each month (last working day of month). We cannot submit an invoice before this date. You will also receive a statement shortly after to the same email address, which is a summary of your account.
  • How can I make payment?
    Payments can be made in the following ways: BACS – details are on the monthly invoices. Card – including Amex (there is a 2.5% sur-charge for all card payments except Visa Debit). Card payments can be made over the phone and online by clicking on the Sagepay button is at the bottom right corner of your statement and following the steps. Cheque.
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