The Filtek Matrix: Completing and Sprucing Methodology
As with all direct composite process, it is important to to contour and varnish smartly to reach herbal effects. The Filtek Matrix will take you via composite build-up and supply a greater form whilst minimizing voids in comparison to freehanding since you are filling moderately than layering. Nonetheless, it’s as much as you to effectively end the recovery.
When contouring a recovery, created with the Filtek Matrix or differently, I make the most of a “divide and overcome” means. For those who center of attention on every anatomical part of the recovery one at a time, the sum of the portions will likely be an anatomical teeth. Throughout every step, it’s essential to simply center of attention at the function to hand and no longer be distracted through different options. The “divide and overcome” idea covers ten anatomical options, which you’ll discover in additional element within the article, “A scientific method to contouring and sprucing anterior resin composite restorations: A tick list manifesto.”1 Whilst every house is essential, the Filtek Matrix takes you additional than conventional direct composite restorations anatomically, so you’ll save time on build-up prior to the overall end:
The duration of the enamel:
Historically, you could possibly resolve duration in keeping with adjoining enamel together with the esthetic and purposeful parameters of the recovery and use abrasive discs, equivalent to 3M™ Sof-Lex™ Contouring and Sprucing Discs, to achieve the right kind duration. On the other hand, with the Filtek Matrix, you don’t even need to take into consideration this step – duration is already integrated into the design of the matrix – it is going to simply want smoothing (fig 6).
Determine 6: Smoothing the incisal edge with a 3M™ Sof-Lex™ Completing and Sprucing Disc.
Incisal-facial line perspective:
This anatomical function could also be equipped through the matrix. The incisal-facial line perspective will have to observe a herbal arch shape.
Facial profile/crest of contour:
A regular incisor contour has 3 planes: cervical, heart and incisal. In most cases, the crest of contour (the best bulge of the teeth), is of course located between the center and gingival 3rd of the enamel, and may also be evaluated from an occlusal view. If vital, it will have to be subtle with a tremendous diamond bur or disc (fig 7).
This is a difficult function to procure with the Filtek Matrix, because of extra subject material, however may also be completed with cautious consideration and observe – remember to profit from 3M’s coaching kits with observe fashions to refine your methodology.
Determine 7: a. A line is traced between the center and gingival thirds of the restorations. b. A tremendous diamond bur is used to outline and align the facial contours.
Line angles:
Line angles constitute the transition between the buccal and lingual with the proximal surfaces; those traces can have an effect on the visible belief of a teeth and will have to be in moderation positioned to verify a herbal look (fig 8). Those angles are essential as a result of they are able to optically exchange the semblance of a teeth. If the road angles are too a ways aside, the teeth will glance wider; if they’re too shut in combination, the teeth will glance narrower.2 The facial perspective, specifically, may also be difficult with the Filtek Matrix because of subject material extra – which is why it’s so essential to take away as a lot extra as conceivable prior to getting rid of the matrix.
Determine 8: a. The specified line angles are traced onto the restorations. b. The traces are subtle with 3M™ Sof-Lex™ Completing and Sprucing Disc at speeds underneath 8000 RPM.
Embrasures:
Each and every embrasure – incisal, facial, gingival, and lingual – will have to be contoured with a disc to reach the right kind form and dimension. Gingival embrasures are the toughest for practitioners to keep watch over and save you extra, however the Filtek Matrix includes a fin that is helping save you extra subject material on this house.
On the other hand, whilst embrasures are constructed into the Filtek Matrix, they are going to want an adjustment right here and there to verify they’re easy and excess-free. After the use of the Filtek Matrix, the embrasures could also be joined, but it surely’s a smaller house to wreck via, and it’s a lot more uncomplicated to split the enamel. To wreck the touch, I love to make use of a serrated blade. It’ll minimize the composite, separate it, however no longer take away it – then I will be able to easy the sides (fig 9).
Determine 9: a. A curved surgical blade (#12) is used to take away extra subject material in a shaving movement, to not minimize the composite. b. A serrated blade is used to split the enamel if there’s bonding matrial between adjoining enamel. A diamond strip can be utilized to additional easy the interproximal spaces if vital.
Level angles:
Additionally built-up within the Filtek Matrix, level angles, or the junction of the road perspective, embrasure, and incisal edge, will have to be a unmarried level. Refinements may also be made if vital.
Axial inclination:
Each and every teeth is mesially vulnerable at various levels, which is especially essential when restoring more than one enamel. When operating with the Filtek Matrix, this will want a little bit of additional paintings, on account of extra within the facial house. Glance from the facial and ensure each and every teeth is mesially vulnerable, and the contralateral enamel fit.
Depressions and elevation:
Including depressions and elevations be certain that a herbal look that blends into the sufferers smile. Maximum anterior enamel have 3 elevations, corrresponding to the tooth mamelons, and two depressions, which I download through penciling over the facial floor, then the use of a fine-grit flame completing diamond bur at about 10,000 RPM (fig 10).
Determine 10: A tremendous diamond bur is used to create depressions.
Floor texture:
Whilst sufferers would possibly need a easy really feel to their enamel, enamel themselves aren’t totally flat. Herbal enamel function perikymata and imbrication traces that go the tooth floor and smash gentle mirrored image. Those textures may also be completed through the use of a tremendous grit diamond bur in one path, from mesial to distal.
Gloss:
A prime ultimate luster and gloss are important to an esthetic recovery and may also be completed with wheels, discs, or abrasive cups in gradually lowering grits. I love first of all a rough grit cup and procure my ultimate polish with an overly tremendous grit diamond-impregnated polisher. I feel it will provide you with a floor indistinguishable from glazed ceramic (fig 11, 12)
Determine 11: a. A sprucing cup is used to complete the recovery. b. Ultimate effects.