Overlay on non-vital tooth

19 Jan 2018 - 21208

An Article by Alessandro Conti The protection of the cusps on a non-vital tooth is very important to reduce the risk of fracture

Fig. 1

Initial occlusal aspect

Fig. 2

Initial x-ray, you can see the d4 lesion in the mesial part of 1.5

Fig. 3

Isolation with the rubber dam

Fig. 4

Pulp exposure during decay removing

Fig. 5

Aspect of the tooth after endodontic treatment and the post space preparation on palatal root canal

Fig. 6

Adhesive phases for the fiber post cementation and build-up stratification, etching for non-vital tooth is from 30 sec to 60 secs, aspect after washing out of the etching agent

Fig. 7

Digluconate solution of chlorexidine at 0,2% to inhibit metal-proteinases, primer, drying primer on the canal with a paper point and the last picture with the adhesive application

Fig. 8

Fiber post conditioning with silane and a thin layer of bonding agent

Fig. 9

Fiber post cementation with dual cure composite cement and the stratification of a micro hybrid composite to complete the build-up

Fig. 10

Composite overlay conditioning, the etching agent is only used to clean the internal surface of the restoration

Fig. 11

Composite conditioning: alumina sandblasting, silane and bond

Fig. 12

Overlay check before rubber dam positioning, isolation and adhesive steps: etching, chlorexidine, primer and bond (without cure it)

Fig. 13

Heated micro hybrid composite used for cementation, proximal floss to remove the excess, sonic tip for cementation, glicerine air-block for the last cure, different final point of view

Fig. 14

Buccal aspect and final x-ray aspect

 

Conclusions

Partial indirect restorations with adhesive cementation are, today, the first choice to restore single non-vital tooth, with this kind of restoration we can protect the tooth from the occlusal strength and we can ensure to the patient a good esthetic result and a bioeconomic kind of restoration

Bibliography

  1. Hayashi M, Okamura K, Wu H, Takahashi Y, Koytchev EV, Imazato S, Ebisu S. The root canal bonding of chemical-cured total-etch resin cements. J Endod. 2008 May;34(5):583-6.
  2. Magni E, Mazzitelli C, Papacchini F, Radovic I, Goracci C, Coniglio I, Ferrari M. Adhesion between fiber posts and resin luting agents: a microtensile bond strength test and an SEM investigation following different treatments of the post surface. J Adhes Dent. 2007 Apr;9(2):195-202.
  3. Goracci C, Ferrari M. Current perspectives on post systems: a literature review. Aust Dent J. 2011 Jun;56 Suppl 1:77-83.