The administration of postsurgical antibiotics did not produce statistically superior osseous healing of Class II furcation defects. This result may be attributable to membrane design which facilitates connective tissue ingrowth, thereby preventing bacterial downgrowth and contamination of the newly regenerated tissues.

The administration of postsurgical naproxen failed to produce osseous healing that was statistically superior to that obtained with polylactide bioabsorbable membranes alone.

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The paper looks for reaction of the public at large that is people out of educational system, concerning the mathematical exercises. We can see some results about: • impact of terms on the motivation • the effects of the traditional didactic on the method to resolve a problem. Résumé. Cet article cherche la réactions du grand public c.a.d. de personnes hors système scolaire, de nombreuses annèes après avoir terminé leursétudes visà vis des exercises mathématiques. Nous présentons quelques résultats concernant les points suivants :-l'impact de l'« habillage » d'unénoncé sur la motivation-les effets de l'absence d'un contrat didactique traditionnel sur la manière de résoudre un problème.