Treatments of the Necrosed Immature Teeth (REV)

Randomized Comparative Test Multicentric, Forward-looking Single-blind, Between a Reference Technique and an Innovative Technic.

Estimate if the technique of revascularisation pulpaire (with some hydroxide of calcium) allows to obtain a better forecast of preservation of the tooth without complication than the conventional technique with the creation of an apicale barrier in the MTA in 24 months.

Inclusion Criteria:

• patients presenting one or monoradicular immature definitive several teeth ( open apex) with a pulpar necrosis,
• 6-year-old patients in 17 years the parents(relatives) of which agree to give a lit(enlightened) written consent or patients of more than 18 years old.

Exclusion Criteria:

• general order: any pathology or treatment(processing) dissuading a treatment(processing) endodontic (patients at risk of infectious endocarditis) or pulling(entailing) an immunosuppression (diabetes, HIV, immunosuppresseurs treatments(processings) post-transplant, long-term corticoids, chemotherapies), allergy known about the used, antecedent products of cervico-facial radiotherapy, presenting subject of the communications problems, the pregnancy and the feeding.
• local order: generalized periodontal disease or superior located(localized) periodontal pocket in 3mm, crack or fracture(split) radiculaire, radiculaire reduction of the necrosed immature tooth