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Reflections from undergraduate teaching ordeals: some difficulties and answers of restoring enamel with dental resin composite instead of dental amalgam Andrew F. Corridor
The large incidence of open contacts with food stuff impaction may very well be amongst the reasons why -as Strassler states -“scientific evidence has demonstrated that Course II composite resins have considerably increased fees of caries for the gingival margin in comparison to amalgam restorations”.26
Advises which the matrix cannot be placed on the cavity floor; it must exceed the gingival margin in the preparation.
The flexible wave design and style of Palodent Additionally wedges type and stack for an excellent match. Wedges are produced for great sealing with the gingival margin.
When an appropriately formed matrix is chosen, this possibly leads to an optimum cervical emergence and occlusal emergence out of your Get in touch with. There is certainly also a clean convex Get hold of region inside the resulting restoration with minimum ledging, accessible to ending (Fig. 12). Adaptable sectional matrices (≤fifty microns thick) can be stabilised coronally with This method and may be used in more substantial cavities the place walls are lacking. It could possibly however be technically more difficult to stabilise these matrices in the desired posture. They normally take advantage of cervical stabilisation and sealing with PTFE tape adhering to software in the wooden wedge, in advance of coronal stabilisation with flowable composite. Even further research to formally evaluate these troubles might be valuable.
An alternate is to employ a clear silicone index. Nevertheless, because silicone is sticky, it might be complicated to build, with which quite a few direct composite resin restorations could be placed properly. It allows the polymerization in the composite resin with the clear silicone material along with the transfer on the tooth morphology in the waxed cast on the mouth. The index is built stiff from the putty, as well as utilization of composite resins that light-weight-polymerize is built feasible with the clear silicone. Inside the front or back again with the mouth, this process click resources may be used to maintenance a single tooth or simply a row of enamel [thirteen-15].
is chosen for the class II planning if the proximal “box” is prepared to the bare minimum depth and width and also the cusps are intact. The extension band
But whilst picket wedges are employed with Tofflemire systems, sectional systems benefit from wedges which offer adequate adaptability and curvature to conform to tooth contours, developing a improved seal.
Helps prevent contaminants from moving into the Doing the job discipline. Stackable wedges seal the base from the restoration to produce a limited in shape.
A technique has her response become explained employing a sectional matrix system and affiliated armamentarium, in addition to a nanofilled microhybrid composite, to generate an anatomically precise course II posterior composite restoration.
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The anatomically formed Palodent matrices provide natural contours for superior clinical outcomes—without having cumbersome machines, obstructions in your working space, or the need for extensive interproximal finishing.
Ensures predictable, limited contacts with an complementary system of components that conform for the tooth. Restorations are anatomically proper to scale back fracture and foodstuff traps.