Start studying Class II Cavity Preparation. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Cavity class II.: involves one or both of the proximal surfaces of the tooth (premolars, molars). Usually the decay starts under the contact area: M, D,. M and D. This view shows the completed Class II cavity preparation after glass ionomer base insertion and refinement. The Composi-Tight Gold Sectional Matrix System.


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Class II cavity prep Flashcards Preview

In the case of an MOD preparation, it is possible to place separating rings oriented in opposite directions at both mesial and distal surfaces simultaneously. However, tooth separation may be less effective class ii cavity preparation to opposing forces on the prepared tooth.

Therefore, the recommended procedure is to position the ring to achieve tooth separation at one interproximal contact first, and then after the first contact area is restored, to reposition the ring at the other interproximal contact to achieve tooth separation there and to complete the restoration.

Bonding process When a 3-step total-etch bonding system is used, the phosphoric acid class ii cavity preparation is applied to the enamel class ii cavity preparation, and then to the dentin for a maximum etching time of 15 seconds on the dentin surface.

The etchant is thoroughly class ii cavity preparation and excess water is removed to leave a moist dentin surface without pools of water.

Primer is immediately applied to saturate the dentin surface. The primer can be applied in multiple consecutive layers and a minimum of 2 layers should be applied. A rubbing or massaging action may aid primer penetration.

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Inadequate priming can lead to a discrepancy in the depth of resin penetration relative to the depth of dentin demineralization. The fully-primed dentin surface is then gently dried to class ii cavity preparation evaporate the primer solvent before the application class ii cavity preparation the adhesive component.

If there is residual primer solvent at the interface, the bond will be more prone to bond degradation. An adequately primed dentin surface will appear glossy but should not actually be wet. The adhesive should be applied to form a thin uniform layer by careful brush application.

The excessive use of a stream of air to spread the adhesive can create pooled areas of excessive adhesive thickness as well class ii cavity preparation bald areas of inadequate adhesive thickness, and therefore should be avoided Photopolymerization of the adhesive layer is essential.

Resin insertion The first increment of composite material that is applied to the gingival seat class ii cavity preparation be no greater than 1mm thick since the gingival margin is relatively distant from the light source.

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Adaptation of the resin composite material to the gingival margin is difficult but critical. Increased lower anterior face height 4.

  • The dimensions of everyday class-II cavity preparations for amalgam.
  • The quality of routine class II cavity preparations for amalgam.
  • The quality of routine class II cavity preparations for amalgam.
  • The dimensions of everyday class-II cavity preparations for amalgam.
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Increased overbite Following trauma, bluish-grey discolouration of the crown is due to Which of the following is LEAST likely to cause pain? A patient experiences pain and some gingival swelling in the anterior segment of the mandible.


The mandibular lateral incisor has a shallow restoration, is tender to percussion and gives a positive response to the electric pulp tester. There is some mobility. The most likely class ii cavity preparation is Which one of the following statements is true as defined in endodontics?


After completion of endodontic chemomechanical debridement you can expect class ii cavity preparation have 1. Which of the following methods of instrument sterilization uses the lowest temperature? When root canals are treated topically with class ii cavity preparation rather than with disinfectants 1.

Your instructions should be to The placement of a retentive pin in the proximal regions of posterior teeth would MOST likely result in periodontal ligament perforation in the For a cast gold restoration, a gingival bevel is used instead of a shoulder because a bevel 1.

Firm contact between approximating teeth is important because it In determining the ideal proximal outline form for a Class II amalgam cavity preparation in a molar the 1.

Class II cavity prep Flashcards by Luke Lloyd | Brainscape

Beveled vertical proximal walls exhibited significantly less facial and lingual wall microleakage compared to all other groups, and less gingival marginal leakage compared to the control group. Hence, it may indirectly help to improve the quality of the work by improving the visibility of the operating site.

It may also help to improve posture by subconscious attempts. This could be because of class ii cavity preparation relative inexperience of undergraduates with loupes.