[Biocompatibility and role of a new resorbable membrane (polyglactin 910-collagen) in periodontal surgery. Preliminary study]. / Biocompatibilité et interets d'une nouvelle membrane résorbable (polyglactin 910-collagène) en chirurgie parodontale. Etude preliminaire.

A resorbable mesh (Polyglactin 910) coated with collagen was employed to test its biocompatibility and its possible role in new attachment procedures.

[The effect of a formaldehyde-tyrothricin combination placed in periodontal pockets in association with scaling and root planing]. / Evaluation de l'activité d'une association "formaldéhyde-tyrothricine" instillée dans les poches parodontales en complement du detartrage-surfaçage.

A solution of formaldehyde and tyrothricin was placed in periodontal pockets of 14 patients. One maxillary quadrant was used as the experimental side, while the contralateral quadrant was employed as the control. A placebo solution was placed in the pockets of the control side. Both the experimental and control sides were treated on days -3, 0, +4, +7, +11 and +14. Scaling and root planing was accomplished on day 0. Plaque and gingival indices, and gingival fluid volume were recorded on all of the treatment days, as well as on day +28. Pocket depths were noted on days -3, 0, +14 and +28. Improvements were noted in all parameters measured on both the experimental and control sides, although statistical analyses revealed that plaque and gingival indices were slightly better in the experimental side. The author concludes that placing a Formaldehyde-Tyrothricin solution in periodontal pockets offers some therapeutic gain over scaling and root planing alone.

[Periodontal reconstruction using the guided tissue regeneration technique. Apropos of a case]. / Reconstruction parodontale par la technique de la régénération tissulaire guidée. A propos d'un cas.

Different surgical techniques have been used to treat periodontal osseous defects. Periodontists were very full of hope with osseous grafts but the results were disappointing or unpredictable. A best knowledge of the biologics determinants of periodontal healing has lead to the concept of guided regeneration. A case of deep osseous defect of a mandibular incisor was treated by the placement of a Gore Tex membrane. The clinical and radiographic result is satisfactory.

[Focus on osseous allografts in periodontal therapy]. / Mise au point sur les allogreffes osseuses dans la thérapeutique parodontale.

This review of the literature emphasizes the following points: Bone allografts in periodontology seem to have an osteogenic potential comparable to that of autografts; Taking of a graft on the patient is avoided, but it is necessary to resort to a bone bank for the preparation (lyophyllized bone) or the preservation (bone preserved at low temperatures) of the graft material; The clinician has available an amount of material enabling to treat all types of lesions; The role of bone grafts in healing phenomena is still controversial. For some, it promotes bone neoformation and the formation of new attachments. For others, it encourages ankylosis which is only avoided by interposition of a long junctional epithelium. The research in progress should specify the influence of bone allografts on regeneration of the periodontium.