Microleakage under orthodontic bands cemented with nano-hydroxyapatite-modified glass ionomer: An in vivo study

Autor:	Enas T. Enan, Shaza M Hammad
Rok vydání:	2013
Předmět:	Cement Dye penetration Orthodontic brackets Durapatite Materials science Nano hydroxyapatite business.industry Significant difference Glass ionomer cement Dentistry Orthodontics Cementation (geology) business
Zdroj:	The Angle Orthodontist. 83:981-986
ISSN:	1945-7103 0003-3219
Popis:	Objectives: To estimate the in vivo effect of nano-hydroxyapatite (HA) modification of banding glass-ionomer cement on microleakage under orthodontic bands. Materials and Methods: Eighty noncarious premolars scheduled for extraction in 20 orthodontic patients were randomly divided into four groups. Grouping was based on the ratio of nano-HA (0%, 5%, 10%, 15% by weight) added to the luting glass-ionomer cement (GIC) Ketac-Cem, which was used for cementation of prefabricated micro-etched orthodontic bands. Dye penetration method was used for microleakage evaluation at the cement-band and cement-enamel interfaces. Statistical evaluation was performed with a Kruskal-Wallis test and a Mann-Whitney U-test, and a Bonferroni-adjusted significance level was calculated. Results: Bands cemented with conventional GIC showed the highest microleakage scores in comparison to those cemented with nano-HA-modified GIC. No significant difference was found between teeth banded with 10% and 15% modified GIC. Conclusions: Modification of the banding GIC with 15% nano-HA revealed a positive effect on reducing microleakage around orthodontic bands.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::db0951de9e974bd6a6682092047a49c5 https://doi.org/10.2319/022013-147.1 Zobrazit plný text záznamu