This article describes not so much a technique a dentist needs to use, but a way of thinking. A way of thinking that will add to the long term prognosis of our restorative work.
The article describes a very common scenario in every day practice; a patient in need of posterior restorations with a canine discluding occlusal scheme.
This kind of occlusal scheme, in lateral excursive movements allows posterior teeth to completely disclude while the guidance relies on the canines. Inevitably, the canines will wear in time and then the guidance will be shared with one or more of the posterior teeth. But we cannot foresee on which of the posterior teeth or if this guidance will be favourable for the dentition and the TMJ.
The good thing about this article is that describes a technique your technician needs to use. Us as dentists do not have to alter our preps in any way. All we have to do is add to our lab prescription a few more words.
In a nutshell, when the technician is waxing our articulated restorations, will remove from the model the anterior teeth and apply group function on the posterior teeth. This way, when the canines wear, we know that our patient will be functioning in a well planned group function thus improving the long term success of our restorations.
http://rapidshare.com/files/291745609/anticipation_of_wear.pdf
1 comment:
Although the rationale for the technique is very good, one has to remember that it cannot be accurately applied without facebow recordings and articulation in a semi adjustable articulator. The results won't be optimal when adjusting the occlusal surfaces of the posterior teeth in an articulation scheme with high risk for discrepancies (without facebow recordings).
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