Τίτλος:
Comparative in vitro study of the sealing efficiency of white vs grey ProRoot mineral trioxide aggregate formulas as apical barriers
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Mineral trioxide aggregate (MTA) has been proposed as one of the materials which can be used in a one-visit apexification technique. Recently conventional grey MTA has been replaced by a new white MTA formula. The aim of this study was to compare the root canal adaptation of white MTA to that of grey MTA when used as an apical barrier in teeth with open apices. We also examined whether a previous calcium hydroxide intracanal medication affects MTA's sealing ability and investigated the ability to remove calcium hydroxide from the root canal walls. Forty-nine teeth were prepared in a manner to simulate a divergent open apex of immature teeth. Four teeth were used in a preliminary experiment to demonstrate the inefficacy of calcium hydroxide removal from the canal walls in teeth with open apices. Four groups of 10 teeth each were created: groups A and B were treated with calcium hydroxide intracanal medication and then received an apical plug of grey and white MTA respectively. Groups C and D received an apical plug of grey and white MTA respectively without previous intracanal medication. Four teeth served as negative and one as a positive control. The marginal adaptation and sealing ability of the apical barrier were tested by means of a dye tracer (basic fuchsine) after longitudinal sectioning. It was found that MTA apical barrier resisted displacement during gutta-percha condensation. Calcium hydroxide pretreatment, adversely affected white MTA sealing ability (P < 0.05). © 2008 Blackwell Munksgaard.
Συγγραφείς:
Stefopoulos, S.
Tsatsas, D.V.
Kerezoudis, N.P.
Eliades, G.
Περιοδικό:
DENTAL TRAUMATOLOGY
Λέξεις-κλειδιά:
aluminum derivative; biomedical and dental materials; calcium derivative; calcium hydroxide; gutta percha; mineral trioxide aggregate; oxide; root canal filling material; silicate; unclassified drug, analysis of variance; article; chemistry; comparative study; drug combination; drug effect; endodontics; evaluation; human; methodology; nonparametric test; tooth disease; tooth pulp; tooth root, Aluminum Compounds; Analysis of Variance; Calcium Compounds; Calcium Hydroxide; Dental Leakage; Dental Pulp Cavity; Drug Combinations; Gutta-Percha; Humans; Marginal Adaptation (Dentistry); Oxides; Root Canal Filling Materials; Root Canal Irrigants; Root Canal Obturation; Silicates; Statistics, Nonparametric; Tooth Apex
DOI:
10.1111/j.1600-9657.2007.00516.x
