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Bite Registration for Complete Dentures , How to guide on taking a Denture Bite Registration - Part 1of 3

9/6/2015

 
Taking a bite registration is the second most important part of Denture construction (First is impressions). The information obtained from the patient creates the parameters for the Dentures to be made exact to the patient unique characteristics

Conventional Bite Rims or a Manchester rim ?

The first step is to choose between conventional bite rims, Manchester rims and Gothic arch tracing. Today you’ll learn about Manchester rims and taking a bite registration clinically and what information is transferred and utilised that creates the try-in in the Laboratory.

Although Manchester rims and conventional bite rims look similar and may give you the same result, it actually simplifies the process of taking a bite registration effortlessly due to its design.  
Manchester rims was developed in the University Dental Hospital of Manchester. Above is pictures of conventional bite rims on the left hand side and Manchester rims on the right hand side.

Manchester rims have a few advantages over CBRs:
  • After a certain amount of time wax can change dimensionally and make the bite rim loose and may not allow you to asses retention, extension, stability and support.
  • A solid base plate allows you to asses the retention and stability of the base plate and establishes a relationship between the base and the underlying tissues. You can easily take an imp wash inside the base plate if it is not sufficient.
  • It allows you to check the extensions around the peripheral area and trim that area if there is interference or cheek dislodgement. (see our Taking denture impression like a pro guide to see how this is important).
  • Being stable & retentive allows you to seat the MRs without having to worry about it dropping whilst preforming a bite registration. This also makes life easier when assessing the frontal and occlusal plane with a fox gauge.
  • It allows you easily capture the patients facial features with the rims being retentive and stable, e.g the centre line will not move as the base plate will keep the rim stationary.
  • The lower rim is made with blocks between the premolar to the molar region and is only used to obtain and lock the OVD which provides accurate control over the OVD. When the contacts, bilaterally, are even at the selected OVD it can be locked together via a PVS or putty material, which allows you to simply place it back into the mouth to verify its accuracy.
  • Its patient friendly, if made correctly, it does not feel like a mouthful of wax. 
  • The drawback is the uncertainty of achieving the most retruded mandibular position and the lack of information on eccentric mandibular movement (if this is what you need, you may prefer to use Gothic arch tracing method instead).
Download this guide in .pdf
NEXT - Part 2
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Dr. Amol Chandrakant Godse link
9/7/2015 01:05:11 pm

Very fine and technical, very useful & easy to understand, information.
Plz. I would like to receive in future also all the information .
Thank You
Dr. Amol Godse

Kash link
9/7/2015 08:03:23 pm

Dear Dr. Amol Godse

Thank you for your comment, i will post them onto facebook for guides i should be doing one on Gothic Arch Tracing when i find the time :(

Stay posted

Kash


Comments are closed.

    Private Dental Laboratory in London

    Bremadent Dental Laboratory

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    "We respect Dentistry, Dental Technology and Science which makes us stand out from our competition"
    Clinical Dental Technician Kash Qureshi - Bremadent Dental Laboratory & Swissedent Denture ClinicKash Qureshi Clinical Dental Technician - Bremadent Dental Laboratory & Swissedent Denture Clinic
    About the author:
    Kash Qureshi is a Clinical Dental Technician (Denturist) in the U.K who oversees and quality controls over 3000+ fixed and removable prosthesis including implant cases from a clinical and technical aspect monthly at Bremadent Dental Laboratory & Swissedent Denture Clinic in London.
    www.swissedent.co.uk  www.bremadent.co.uk office@bremadent.co.uk

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