A dental matrix is a band that adapts to the surface of the tooth to be restored and reproduces the anatomical contours, replacing the missing wall or walls and containing the restorative material to give it a anatomical shape to the interproximal walls and obtain adequate contact points.
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Sometimes choosing a matrix band is not an easy task and that is why in this article we want to tell you how you can select the most appropriate one for each of your clinical cases and what are the factors to consider in your choice. Are you ready?
The use of matrices in dentistry allows teeth to be reconstructed according to their original morphology, maintaining their shape, contour and contact points, in order to preserve their function. This important work is carried out by restorative dentistry, which over time has invested its efforts in the development of new techniques and materials that facilitate this task. Among these developments we find the matrix systems, which we will talk about in this article. But first things first.
The interdental or interproximal area, that is, between tooth and tooth, is formed by the contact area or relationship, the interproximal niche and the interdental papilla that occupies this space in the form of a triangle. The contacts between the teeth, called interproximal contacts, have the function of protecting the soft tissues and when they are not present, food packing occurs that damages the gingival tissues, causing diseases such as gingivitis and periodontitis. In addition, a correct contact between the teeth favors the stability of the arches through the combined anchorage. So how can we get functional contacts and contours? Dental matrices are the solution.
There is a wide variety of types of dental matrices on the market that we can classify according to:
You probably know many dental matrix systems and are using one or two of them. Next, we will talk about some systems, from the most common and well-known to other more innovative ones that you may not know yet and are worth trying. Do you dare?.
As you can see, we start with a classic. This universal matrix system was created by Dr. Benjamin Franklin Tofflemire in and is still in use today. The Tofflemire system is indicated to restore interproximal surfaces, class II cavities and mesio-occluso-distal (MOD) cavities, in both permanent and deciduous posterior teeth.
It has several advantages, among which we can mention the possibility of using matrix bands of different widths, it can be separated from the band before removing it, it can be used with curved bands and, in addition, it can be It can be positioned both vestibularly and palatally.
Do you have difficult class II cases? The Composi-Tight 3D Fusion Sectional Matrix System could be the ultimate solution for predictable results and we'll tell you why.
The Composi-Tight 3D Fusion sectional matrices provide tight and perfect contacts thanks to their advanced design, in addition this system has rings with Soft Face technology to fit the extra-soft matrices to the contour of the tooth to help you perform a perfect restoration without the matrix moves out of place. This Garrison matrix system is highly intuitive and easy to use, with features that will make your job easier and more efficient.
Garrison's Strata-G Sectional Matrix System provides an anatomical 270º Seal that prevents burrs and over-contoured margins.
The Strata-G system has been specially designed for the creation of perfectly anatomical and narrow contact points in class II composite restorations. The sectional matrix bands ensure the reconstruction with the proper anatomy on the tooth, while the three models of rings create the necessary separation between the teeth for the adaptation of the bands, obtaining as a result a natural and close contact.
The Ultradent Halo sectioned matrix system provides an ideal separation between the teeth, thanks to the design of its ring that fits with high precision and the wedge that provides an active and always careful separation with soft tissues. In addition, the bands are perfectly designed to give the tooth a natural contour, thus providing uniform and precise contact points.
Perhaps the most distinctive advantage of this innovative matrix system is that the wedges are active, that is, they work by separating the teeth in a comfortable way for the patient. Another interesting advantage is that the ring of the Halo system is universal, this means that you only have to use one ring for both molars and premolars.
In conclusion, making a good point of contact is a difficult task and remains a challenge for today's restorative dentistry, but fortunately in our times we have matrix systems very capable of achieving them and which have surpassed the classic Tofflemire matrix holder, which has the drawback of generating axial emergence profiles that are not very anatomical, straight and difficult to improve.
The sectional matrix systems are a great alternative, which, although they have a higher cost, are also their benefits, since they allow a better fit in interproximal spaces to achieve a better point of contact. contact and a more natural and anatomical contour.
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"The DualForce Sectional Matrix System takes the best features of other systems and improves on them; the DualForce™ Active-Wedges™ have been transformative and along with the DualForce™ Ultra-Wrap™ Matrix
Bands, they create a tight seal at the gingival and proximal margins through better adaptation to the tooth which minimizes flash and finishing time"
Dr. Dean Kois received his Doctorate in Dental Medicine from Nova Southeastern University, College of Dental Medicine. He went on to specialize in Prosthodontics receiving a Certificate in Prosthodontics with a Master’s of Science degree from the University of Washington, School of Dentistry, and then completed a surgical Implant Fellowship at New York University, College of Dentistry. He continues to lecture nationally and internationally all while maintaining a private practice in Seattle. In addition, he continues to work with restorative dentists at the Kois Center, a didactic and clinical teaching program.
"The unique and anatomically correct design of the DualForce Ultra-Wrap Matrix Band allows for ideal contour of the interproximal anatomy and marginal ridge in Class II restorations. It can be extremely difficult to sculpt and contour these surfaces. Therefore, having a matrix that is easy to place
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and reliably replicates the ideal contour of the natural dentition ensures the long-term success of all restorations."
Dr. Devin McClintock is a graduate of the State University of New York at Buffalo School of Dental Medicine (), where she graduated with honors and a minor concentration in esthetics. After completing two years of General Practice Residency and a year as an associate in a private practice, she was one of a few residents selected to complete a two-year residency with the American Academy of Cosmetic Dentistry. She is an owner of a private practice in Williamsburg, VA.
"The key criteria for composite resins to blend into natural tooth structure undetectably, is the adequate amount of opacity in the resin itself at a
given thickness. Evanesce dentin shades with 90% opacity, along with enamel shades having an 80% opacity, provide the correct recipe to block out the tooth/composite transition, allowing the restorative material to blend seamlessly into the tooth structure to ensure invisible margins. This is a result of its nanopigments and fillers that maximize its refractive and
reflective indices. For all my direct restorative cases, I have absolute confidence in Evanesce to flawlessly mimic the beauty of the natural tooth in any direct restorative scenario."
Dr. Chan earned his DMD degree in from Oregon Health Sciences University.
He maintains a full-time practice focused on cosmetic and comprehensive dentistry
located in Ridgefield, Washington. He is the past President and an Accredited member of the American Academy of Cosmetic Dentistry.
"The unique DualForce Active-Wedges have a collapsible tip that collapse as you place it through the proximal contact. Once through the palatal or buccal side, it expands to prevent the wedge from backing out and establishes this ideal cervical seal that will be there through the entire procedure."
Dr. Larose is based in St-Laurent, Québec, Canada; her private practice focuses on conservative cosmetic and reconstructive dentistry. She graduated from the University of Montreal in and is an accredited member of the American Academy of Cosmetic Dentistry.
"Evanesce is available in the most popular VITA shades with three opacity options: Enamel, Universal and Dentin. The material also comes in three “Enamel FX” shades: White, Incisal and Clear along with two bleach shades for additional shade-matching precision. Evanesce’s opacity selection
allows for a more enhanced and excellent esthetic result that disappears into the existing tooth surface."
Dr. Desai is the founder of Luminous Smiles in Newport Beach. She obtained both her Bachelor's degree in Dental Hygiene and a Doctorate of Dental Surgery from the University of Southern California. Dr. Desai is also a graduate of the Kois Institute and is an Accredited Member of the American Academy of Cosmetic Dentistry
"Innovative chemistry within Evanesce enables anatomy to be sculpted without slumping, and the material can be adapted to the preparation or thinned out along the surface without fear of pull-back or sticking. This allows you to easily sculpt intricately detailed anatomy and place thin
layers without worrying about slumping."
"The key criteria for composite resins to blend into natural tooth structure undetectably, is the adequate amount of opacity in the resin itself at a
given thickness. Evanesce dentin shades with 90% opacity, along with enamel shades having an 80% opacity, provide the correct recipe to block out the tooth/composite transition, allowing the restorative material to blend seamlessly into the tooth structure to ensure invisible margins. This is a result of its nanopigments and fillers that maximize its refractive and
reflective indices. For all my direct restorative cases, I have absolute confidence in Evanesce to flawlessly mimic the beauty of the natural tooth in any direct restorative scenario."
Dr. Chan earned his DMD degree in from Oregon Health Sciences University. He maintains a full-time practice focused on cosmetic and comprehensive dentistry located in Ridgefield, Washington. He is the past President and an Accredited member of the American Academy of Cosmetic Dentistry.
"Strong and versatile, this nano-hybrid composite features the characteristics of a direct restorative material intended to replace natural tooth structure and is truly universal. It performs equally as well in anterior applications as it does in posterior ones. With a low shrinkage rate of 2% and high compressive and flexural strengths, Evanesce is ideally suited for the most challenging direct restorative indications."
Dr. Bowes is the owner and clinical director of Enamel Restorative and Cosmetic Dentistry, a private practice in Cape Town, South Africa. In he founded the Digital Dentistry Society of South Africa for which he is President.
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