Stained Veneers: How Do I Prevent This?

That usually happens when you use hemostatic solutions with iron or when there is bleeding during the procedures(drilling, impresion tacking or fatally while cementing). If you avoid bleeding or hemo solutions with iron you can get a better result,remove all the staining and use some peoxide to ensure that, also you will get a better result if you use a good adhesive and cement (I use ultrabond from denmat that has everything you can possibly need). in terms of hemo solution I use for this cases the Viscostat clear by ultradent. There are instruments specially designed to protect the gingiva while drilling and the use of retraction cord(i prefer the name separation cord) in two layers (usually a 000 or 00 and a thicker like 1 or 2 on top, I use ultradents non impregnated ultrapak) and leaving the deeper one while taking the impression and doing the temporaries and while cementing too. This should help. best of luck

If the veneers became stained at or soon after placement the cause was likely contamination at the time of cementation. Latent staining after years in function could occur also from poor cement choice, bruxism and/or hyperfunction, or the gingival finish line on dentin or cementum. Tooth flexure often occurs there causing debonding at that point.Good luck.

Encourage excellent hygiene during provisionalization, well made provisionals, consider chlorhexidine rinses, Hemodent or Viscostat clear for retraction, proper use of rubber dam or similar devices, light cured luting resin or amine free dual cured luting resin. Read as much as you can on materials and esthetic procedures, take hands-on courses, set aside enough time for the procedures, and work with a good ceramist. Good luck.

Bleaching will do the trick.

I think that using cord when doing the impression is counter-productive in most cases - one notable exception is when you are re-doing veneers and someone else has prepped previously very sub-gingivally. The prep should always be,at the very most, within the free gingival sulcus and ideally supra-gingival , making use of cord redundant. This must be the case with Dr.B's case otherwise he wouldn't be able to see the black line if it were sub-gingival. My advice would be to prep only to the gingival margin and not use any retraction cord at all. Of course, good hygiene during temporization is very important but I would steer clear of rubber dams at cementation - they will cause more problems than they solve.

Sometimes we see dark stained margins because the patient rinses excessively with high alcohol mouthrinses. This degrades the resin bond and allows bacteria to enter and stain results. Patients should use non alcohol non colored mouthrinses and toothpastes.

I recently saw a technique for removing veneers by way of brief laser exposure. Try a YouTube search. You may be able to remove them, clean with MicroEtcher-type sandblaster and HF etch and recement using the advise above.

Mike is correct Dr Hornbrook has a Youtube video that demonstrates the technique, very slick and very fast.