Biomedical subjects
Publications and source records attributed to T Abitbol.
This article documents the clinical observations made in the course of a surgical procedure in which a resin ionomer was used as a barrier for guided tissue regeneration. The results indicate that this material appears to demonstrate potential in such procedures.
This article illustrates the potential benefits of regenerative periodontal therapy in mucogingival surgery and esthetic dental treatment. Cases are described in which the treatment of soft-tissue recessions and root exposures are treated with surgical procedures where both clinical soft-tissue augmentation and the regeneration of periodontal attachment are obtained. Cases are also presented to illustrate the clinical application of guided tissue regeneration. Resorbable and nonresorbable barriers are placed over the root surface and bone and covered by the overlying flap, which allows the selective repopulation of the lesion by progenitor cells and the inhibition of a long junctional epithelium. Emphasis is placed on regenerative procedures in soft-tissue augmentation, particularly with respect to rationales, techniques, and indications.
In this clinical report, six cases are presented in which radicular carious lesions and gingival recessions were treated concurrently. The combined treatment included the removal of caries, radicular planing, and various surgical techniques for root coverage. Traditional procedures, as well as newer procedures, such as guided tissue regeneration, showed successful results.
The purpose of these case reports is to introduce a potential use for a resin-ionomer in guided tissue regeneration. The resin-ionomer is used in a two-fold manner (1) to lute an e-PTFE membrane in place in furcation defects and (2) to act as a barrier itself in furcation and infrabony defects. Clinical observations made in this report indicate that a resin-ionomer barrier may be placed subgingivally without sutures. In addition, the resin-ionomer, given its ability to release fluoride, may serve as a delivery system for local antimicrobial therapy during the initial stages of wound healing. Further studies should be conducted in order to evaluate the potential of the resin-ionomer for the uses described in this article.
OBJECTIVE: The purpose of this investigation was to compare by scanning electron microscopy (SEM) the surfaces of roots treated with a dentin conditioning agent and other materials that have been used routinely in periodontal therapy for root surface demineralization, namely, citric acid and tetracycline hydrochloride. MATERIALS AND METHODS: Sixteen freshly extracted human teeth were randomly divided into four equal groups; each tooth was hand scaled and planed prior to root surface conditioning with citric acid, tetracycline hydrochloride, and a dentin bonding conditioner; Tenure Dentin Conditioner (DenMat Corporation, Santa Maria, CA). The last has been used previously in conjunction with a resin-ionomer barrier in cases involving guided tissue regeneration. Root specimens were prepared for scanning electron microscopy and representative micrographs were taken at 1000x and 2000x. RESULTS: The results of this study indicate that there are morphological similarities between surfaces obtained with the dentin conditioning agent and the other acidic materials that are used routinely in periodontal regenerative therapy. CONCLUSIONS: Root surface demineralization has been shown to remove the smear layer, and provides a surface which is conductive to mechanical adhesion and cellular mechanisms for growth and attachment.
The cases presented in this report illustrate: (1) the potential for a fluoride-releasing resin-ionomer (Geristore) to be used as a sealant between an e-PTFE membrane (Gore-Tex) and tooth structure during a guided tissue regeneration, and (2) the potential for a resin-ionomer to function as a barrier in guided tissue regeneration. In the first case, the e-PTFE membrane was trimmed to only cover the area to be treated prior to its placement over the lesion. The resin-ionomer was mixed following manufacturers specifications, placed on four corners of the pre-trimmed membrane and luted into place. In the second case, the resin-ionomer alone was placed over the lesion, teased off the lesion with a curette while in a semi-set state, and luted into place with freshly mixed material after it set completely. These cases provide preliminary clinical evidence that a resin-ionomer may be used subgingivally for guided tissue regeneration.
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The purpose of this article is to reexamine the indications of surgical techniques and materials used in the regenerative treatment of periodontal disease. Two cases are presented to illustrate the potential for regenerative therapy in instances where limited success might have been anticipated.
One of the essential elements of periodontal therapy is long-term maintenance. Anatomic factors that favor localized plaque accumulation may contribute to the progression of disease. The purpose of this investigation was to evaluate the influence of root concavities on the severity of furcation involvement. Measurements were recorded clinically at the time of surgical treatment. Statistical analysis revealed no significant association between the degree of root concavity and the severity of furcation involvement.