Massad Impression Technique

Anon. asks:

I just took Dr. Joseph Massad’s course on making impressions for complete dentures. He uses unique trays that he has designed for the edentulous arch that are disposable and made out of plastic. You can heat them and then mold them to the desired shape. You can trim them easily with a vulcanite bur. He teaches a multi-step protocol for using different viscosity polyvinylsiloxane impression materials to make the final impression. Have any of you tried his trays and used his impression technique? What is your experience?

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Editor’s Note: According to Dentsply:
“With the Massad edentulous impression tray, Aquasil Ultra Smart Wetting impression material and the Massad Technique, accurate custom tray impressions can be obtained in one visit. In the past, edentulous impressions were either too rigid or too wet. Rigid material compresses the soft tissue while very wet material doesn’t capture the needed muscular detail. The marriage of the Massad impression tray and technique and Aquasil Ultra impression material has resolved both of these issues.

Joseph Massad, DDS, has invented an impression tray and technique which allows the usage of multiple viscosities of Aquasil Ultra impression material in one disposable tray – capturing all the detail needed to create a perfectly fitting full set of dentures. When used with the Massad technique and tray, Aquasil Ultra impression material affords the clinician the optimal outcome.”

17 thoughts on “Massad Impression Technique

  1. drsfs says:

    See below for an interesting abstract on the Massad Impression Tray and Technique

    Source: Compend Contin Educ Dent. 2006 Aug;27(8):446-51; quiz 452, 468.

    The purpose of this article is to introduce a novel impression technique. The procedure demonstrates a building, or layering, method of impression making that maintains the integrity between layers of the impression materials of varying viscosities and controls the path of insertion, minimizing the incidence of overextension. To build a detailed impression of the tissue-bearing surfaces, the clinician selects the proper viscosity of impression material based on the diagnosed tissue condition.

    Conclusion
    ———–
    Making acceptable final impressions when fabricating complete dentures is an important requirement for the successful treatment of an edentulous patient. Diagnosing the tissue condition and classifying the edentulous arch11 should be the determining factors when selecting an impression technique for a specific patient. The layering technique presented in this article represents an alternate impression technique for the clinician who thoroughly understands the basic principles in complete prosthodontics and has the clinical ability to evaluate and assess intraoral tissues of the edentulous patient. The clinician can use multiple viscosities of an impression material and a stock edentulous tray (in this example, a well-designed disposable edentulous impression tray) to border mold and create an impression of the edentulous arch efficiently and accurately, as an effective clinical solution for the contemporary practice of treatment of the edentulous patient.

  2. Jeffrey Hoos DMD says:

    What could be better than to have an anatomical tray and disposable?
    I have used these trays many times and my only thing I would like some people to try is that after confirming the correct size. Not hitting any tissue. Using check retractors, drying the tissue, place a nonrunny material like blue velvet in the patient’s mouth, than sit the tray, remove the check retractors and then boarder trim the tray.
    You will then have a prefect custom tray for the next step.
    It is so much easier to show than explain.
    With these trays….easy to do.

  3. Jeff Krantz says:

    It is a great technique EVEN with custom trays [the customs are NOT needed but if you have them] the “bite material” for making stops, bite material or heavy body for “border molding” and light body as a wash.
    Dr. Massads technique is very smart and it will work if you do not skip steps.

  4. GT says:

    I would like to know just how successful this technique is compared to using a custom tray and heavy viscosity polyether. I learned that technique at the University of Washington and have used it successfully for about ten years now. It does require an extra visit. How many of the dentures made with the Massad tray and technique require relines at the insertion?

  5. Neil Thomas DDS says:

    I have been using the technique for about a year and have been very successful with no need for relines. Saves time and gives a great denture impression.
    Dr. Massad will be presenting the technique at the
    Sterngold Symposium in Vegas. The dates of the Symposium are May May 9 and 10 at Mandalay Bay.
    I will say, the majority of my dentures are implant retained over -dentures, maxillary and mandibular, but for successful implants, you need a stable denture to start with. This technique has been great.

  6. Neil Thomas DDS says:

    Contact Sterngold at sterngold.com for information on the Symposium. Covers Mini implants, 2.2 ERA and conventional 3.25 ERA implant placement and restroration along with Dr. Massad denture technique, marketing dental implants and staff motivation.

  7. Dr. MTM says:

    This impression technique used to involve a two viscosity alginate system. Is the use of polyvinyl siloxanes a significant improvement over alginate?

  8. John Rodriquez DDS says:

    Great trays, however I find the pvs material impression to not only be expensive but time consuming. I use the Massad trays with a duel stage alginate material called System 1. The quality of the impressions rival that of PVS granted it must be poured up ASAP and there are no double pours.

  9. GT says:

    Just pursuing this discussion a little further, is it necessary to use two alginates with the Massad trays? Can the alginate impression be made with 1 alginate mix?

  10. dr.escoe says:

    massad method not intrusive………a lower denture often can extend into retomylohyoid area…….soft gel impression material might not push its way into this area……..muscle trimming a custom made tray with red or green stick compound seems more likely to get this desirable extention…..

  11. J. S. McElinney III, D.D.S. says:

    Repeating the comments by Dr. MTM, I learned the dual-viscosity alginate technique as System 1 in 1978 and use customized, but not disposable plastic trays as part of the Swissedent Custom Denture course with Dr. John Frush. I don’t know if he invented the original technique, but after he died the company was sold to Accu-Dent. I think they make the trays and the alginate. I still use it today. The special dual-viscosity alginate is more expensive than regular alginate but less than PVS and the impression is done in a single 2-step process, thereby saving time and money. Unfortunately, the trays do have to be cleaned. Perhaps the Massad disposable trays would save money by reducing the labor of cleaning the trays.

  12. Prof.Prakash says:

    Elaborating on Dr.escoe comments..
    A stock tray is always less perfect in functional extensions and fit than a custom tray. Varying extension of flanges and distances between the tray and tissues need a thorough understanding of the basic concepts and requirements of obtaining a final impression that has both functional depth and accurate tissue detail reproduction.
    With any stock tray this might require 3 basic steps:
    1. Modify and rectify borders including the postdam area, place tissue stops in 3 or 4 locations
    2. Obtain a heavy viscosity ‘primary’ paying attention to molding the borders.
    3.Cut off excess, provide relief grooves in non stress bearing areas, trim/adjust the borders and then use a suitable wash

  13. Grace Dickinson Branon says:

    What toothbrush do you recommend for implant overdenture patients? I know you have a specific one, but I can not remember it.
    Thank you.
    Sincerely,
    Grace Dickinson Branon

  14. Kenneth Kellogg,CDT says:

    This protocol is a significant improvement over the alginate based, including the Accudent I &II.
    It is also a significant improvement over border molding with compound.
    Any Dr that I’ve recommended these trays to that has followed the protocol has shown vast improvements in quality and predictability. The learning curve is very short.
    In my 25+ years as a removable prosthetic technician, this is one of the greatest improvements in clinical technique I’ve ever seen.

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