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A A Register

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5 recordsLinked to original sources
PubMed1978

Induced reattachment in periodontic-endodontic lesions by root demineralization in situ.

A new method of root preparation to enhance reattachment of gingival tissues to root dentin has been developed through extensive animal research. The improved technique may aid periodontists and endodontists in the management of deep combined lesions. This article reviews essentials of experimental animal data and presents case reports of three different clinical approaches to combined lesion closure attempts utilizing surgical and chemical root preparation.

Adolescent↗
PubMed1976

Accelerated reattachment with cementogenesis to dentin, demineralized in situ. II. Defect repair.

Three surgical experiments, with histologic evaluation, were performed to study induced gingival reattachment to tooth root dentin demineralized in situ during flap surgery in adult mongrel dogs. Experiments demonstrated aspects of: (1) Weekly histochemical and morphological sequences of repair; (2) Repair of chronically inflamed bony defects simulating periodontal pockets; and (3) Six and 12 month repair of reattached surgical defects. Flap reattachment with cementogenesis was induced by in situ root demineralization using citric acid at pH 1.0 applied for 2 minutes. Results demonstrate: (1) The production of anchoring cementum pins extending into dentin tubules widened by demineralization; (2) Reattachment with cementogenesis of inflamed gingiva to roots exposed to chronically-infected surgical defects for 3 months; (3) Success in repairing chronic interproximal one-walled and labial one surface defects by reattachment; (4) Relative failure to repair bifurcation and horizontal bone defects by flap reattachment; and (5) Complete alveolar bone repair over most labial defects by 1 year, with maintenance of a periodontal ligament between induced bone and cementum. These findings, together with previous reports of induced reattachment to demineralized roots, provide further evidence for mechanisms and consistency and suggest that this regenerative phenomenon may be useful in repairing osseous defects in periodontal therapy.

Alveolar Process↗
PubMed1975

Accelerated reattachment with cementogenesis to dentin, demineralized in situ. I. Optimum range.

This study confirms an original report describing accelerated reattachment with cementogenesis to root dentin, surgically exposed and demineralized in situ. It additionally describes results of 250 experiments on over 1000 teeth in mongrel dogs and cats designed to identify an optimum range of demineralization related to type of agent, pH, and time of application. This optimum range consistently induces flap reattachment with cementogenesis, while demineralization rates above and below this range enhance reattachment relative to undermineralized controls, but do not consistently induce new cementum. Although most controls demonstrated some reattachment with partial cementogenesis, none produced complete repair as did properly demineralized root surfaces and approximately one-third showed spithelial migration to the apical borders of the wound. No demineralized teeth demonstrated this control result. Small species differences in the response to root demineralization and the degree of hypermineralization of roots adjacent to chronic periodontal pockets, may make optimum ranges determined in this animal study slightly low for human pocket reaattachment techniques.

Animals↗