Influence of dental exposure to oral environment on smear layer removal and collagen exhibition after using different conditioning agents

Autor: Rubens Spin-Neto, Rodrigo Cavassim, Eduardo de Paula Ishi, Lucas Amaral Fontanari, Shelon Cristina Souza Pinto, José Eduardo Cezar Sampaio
Přispěvatelé: Universidade Estadual Paulista (Unesp)
Rok vydání: 2010
Předmět:
collagen
Smear layer
Dentistry
Root Planing
chemistry.chemical_compound
Tetracycline Hydrochloride
middle aged
Dentin
tooth root
Dental Calculus
Tooth Root
tooth disease
comparative study
Chelating Agents
Orthodontics
Dental Cementum
drug effect
Tooth
Impacted
methodology
Middle Aged
ultrastructure
medicine.anatomical_structure
conditioning agents
Dental surgery
Smear Layer
Collagen
Citric acid
preventive dentistry
scanning electron microscopy
cementum
Adult
medicine.medical_specialty
gingiva bleeding
dentin
Citric Acid
stomatognathic system
medicine
Humans
Periodontal Pocket
tooth calculus
Cementum
human
hypermineralization
General Dentistry
Edetic Acid
tetracycline
business.industry
Tetracycline
dental surgery
Demineralization
stomatognathic diseases
chelating agent
chemistry
Microscopy
Electron
Scanning
pathology
Dental cementum
business
Gingival Hemorrhage
Zdroj: Aarhus University
Brazilian Dental Journal v.22 n.6 2011
Brazilian Dental Journal
Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron:FUNORP
Brazilian Dental Journal, Volume: 22, Issue: 6, Pages: 479-485, Published: 2011
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 1806-4760
Popis: Although in vitro studies have shown encouraging results for root surface conditioning with demineralizing agents, in vivo studies have failed to show its benefits in periodontal healing. This can be attributed to several factors, among which, the hypermineralization of dental surface. Therefore, this in vitro study compared, using scanning electron microscopy (SEM), the effect of root surface conditioning with different conditioners (1% and 25% citric acid, 24% EDTA and 50 mg/mL tetracycline hydrochloride) in impacted teeth and in teeth that had their roots exposed to the oral environment. One trained examiner assessed the SEM micrographs using a root surface modification index. There was a tendency of more root surface modification in the group of impacted teeth, suggesting that the degree of root mineralization influences its chemical demineralization. Apesar de estudos in vitro terem demonstrado resultados favoráveis ao condicionamento da superfície radicular com agentes desmineralizantes, estudos in vivo não mostraram seus benefícios na cicatrização periodontal. Isto pode ser atribuído a vários fatores, entre os quais, a hipermineralização da superfície dental. Portanto, este estudo in vitro comparou, usando microscopia eletrônica de varredura, o efeito do condicionamento da superfície radicular com diferentes condicionadores (1% e 25% de ácido cítrico, EDTA 24% e 50 mg/mL de cloridrato de tetraciclina) em dentes impactados e dentes que tinham suas raízes expostas ao meio bucal. Um examinador treinado avaliou as microscopias eletrônicas de varredura utilizando um índice de modificação da superfície radicular. Houve uma tendência de maior modificação da superfície radicular no grupo de dentes impactados, sugerindo que o grau de mineralização da raiz influencia a sua desmineralização química.
Databáze: OpenAIRE
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