Guerrero ÁF, Morales HD, Téllez JH, Todd JM

Language: Spanish
References: 5
Page: 19-22
PDF size: 375.18 Kb.

ABSTRACT

Evaluate scanning electron microscopy demineralization of root surfaces treated with EDTA and observe their biomodification. Introduction: Root debridement generates a layer of waste containing microorganisms and toxins that could interfere with periodontal healing. For this reason, different substances have been used to eliminate it and to expose collagen fibers on the surface of the tooth. Ethylenediaminetetraacetic acid (EDTA) as a gel to 24% with neutral pH, is a root biomodificator which proposes that when applied to root surfaces, acts as a chelating agent that selectively remove hydroxyapatite matrix collagen from the tooth surface, allowing periodontal ligament cells proliferate more rapidly on it, reinforcing the unity of this area with new gingival fibroblasts. Methodology: 30 bodies were selected tooth indicated for extraction divided into two groups, there was scraping one of them is placed 24% EDTA gel at neutral pH, at the end of 2 min and washed with saline. There are repositioned in the alveoli and impregnated with fresh blood for 3 min, and dried, fixed with 37% formalin and taken to ultrastructural analysis. The photomicrographs were obtained at 500x, 1,000x, 1,500x. Result: The dental organs of the control group and handled with EDTA, there were wide variations in morphological aspects. In the control group, the root surface shows irregular and rough, with a layer of waste which caused the obliteration of the dentinal tubules and demineralized. In the group treated with 24% EDTA gel shows a clean surface with great exposure demineralized dentin tubules. Conclusions: The use of EDTA gel is effective in decontamination and demineralization of the root surface which provides a substrate for a new attachment of connective tissue in periodontal surgical treatment.

REFERENCES

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