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A user report from a practising dentist, Dr Meike Laage, Halstenbek, Germany, on glass fibre reinforced post systems, using DMG’s LuxaPost, LuxaBond-Total Etch, Silane and LuxaCore Z-Dual system
A Fig 2
The complete DMG system - LuxaCore Dual Z, LuxaBond and LuxaPost
fter an endo- dontic treatment, the hard tooth tissue is, in many cases, signifi-
cantly reduced and weakened after caries removal and the establishment of the access cavity. It is, therefore, often necessary to establish additional retention for the post-endo- dontic treatment restoration. An endodontic post for
stabilisation and retention should be used if the endodon- tically treated tooth has a defect on more than two surfaces. Several post systems are avail- able, which are distinguished
from each other by their material of construction, form and cross-section. The newest generation includes glass fibre reinforced composite posts such as the LuxaPost system by DMG, which was evaluated here. A big advantage of glass fibre
reinforced composite posts over other systems is their modulus of flexibility which is similar to that of dentine. Stress generation can therefore be minimised and root frac- tures, which are a significant risk, especially when metallic screw systems are used, can be avoided.
In addition, adhesive bonding
of glass fibre reinforced composite posts guarantees a permanent bond that can help stabilise the dentine walls, especially if they are thin. The conical form of the post ensures good fitting accu- racy and minimal substance loss, while their transparency supports high value treat- ments which are aesthetically pleasing. The LuxaPost system
consists of glass fibre rein- forced composite posts in three different sizes (1.25 mm, 1.375 mm and 1.5 mm diameter) with drills adapted to these
diameters, a depth marker and a measuring board. Colour- coding guarantees the correct assignment of the post and corresponding drill. The application of Silane
ensures a good bond between the post and the luting cement. The post can be adhesively bonded in the root canal using the LuxaCore Z-Dual luting cement, after the post has been silanised with Silane and the tooth prepared with LuxaBond-Total Etch. The core can then be rebuilt using LuxaCore Z-Dual.
Continued »
Fig 2 Preparation of the post hole
Fig 3 Testing the fit of the LuxaPost
Scottish Dental magazine 29
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