Evaluation of Effectiveness of Various Irrigating Solutions on Removal of Calcium Hydroxide Mixed with 2% Chlorhexidine Gel and Detection of Orange-brown Precipitate after Removal

被引:15
作者
Arslan, Hakan [1 ]
Gok, Tuba [2 ]
Saygili, Gokhan [2 ]
Altintop, Hulya [3 ]
Akcay, Merve [2 ]
Capar, Ismail Davut [1 ]
机构
[1] Ataturk Univ, Fac Dent, Dept Endodont, TR-25240 Erzurum, Turkey
[2] Izmir Katip Celebi Univ, Fac Dent, Dept Endodont, Izmir, Turkey
[3] Katip Celebi Univ, Fac Dent, Dept Pedodont, Izmir, Turkey
关键词
Calcium hydroxide; citric acid; EDTA; maleic acid; orange-brown precipitate; sodium hypochlorite; parachloroaniline; SMEAR LAYER REMOVAL; SODIUM-HYPOCHLORITE; ENTEROCOCCUS-FAECALIS; APICAL PERIODONTITIS; ROOT CANALS; IN-VITRO; EFFICACY; REVASCULARIZATION; ENDODONTICS; MEDICAMENTS;
D O I
10.1016/j.joen.2014.06.003
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Introduction: The aims of the present study were to evaluate the effect of various irrigating solutions on the removal of calcium hydroxide mixed with 2% chlorhexidine gel from an artificial groove created in a root canal and the generation of orange-brown precipitate in the. remaining calcium hydroxide mixed with 2% chlorhexidine gel after irrigation with the various irrigating solutions. Methods: The root canals of 48 mandibular premolars were prepared using ProTaper Universal Rotary instruments (Dentsply Maillefer, Ballaigues, Switzerland) up to size F4. The roots were split longitudinally, and a standardized groove was prepared in the apical part of 1 segment. The root halves were reassembled, and calcium hydroxide mixed with 2% chlorhexidine gel medicament was placed into the grooves. The roots were randomly divided into 4 experimental groups specified by the irrigation solution used: 1% NaOCl, 17% EDTA, 7% maleic acid, and 10% citric acid (n = 12). The amount of remaining medicament was evaluated under a stereomicroscope using a 4-grade scoring system. After irrigation, the specimens were also evaluated for the presence/absence of orange-brown precipitate. The effects of the different irrigation solutions on medicament removal were statistically evaluated using the Kruskal-Wallis and Mann-Whitney U tests with Bonferroni correction at a 95% confidence level (P = .0083). Results: Solutions of 7% maleic acid and 10% citric acid were superior to solutions of 1% NaOCl and 17% EDTA in removing calcium hydroxide mixed with 2% chlorhexidine gel (P < .0083). There were no significant differences among the other groups (P > .0083). Orange-brown precipitate was observed in all specimens of the NaOCl group but in no specimens in the other groups. Conclusions: Irrigation solutions of 7% maleic acid and 10% citric acid were more effective in the removal of calcium hydroxide mixed with 2% chlorhexidine gel than those of 1% NaOCl and 17% EDTA. Orange-brown precipitate was found in all specimens of the NaOCl-irrigated groups. However, the precipitate was not observed in specimens in the groups irrigated with 17% EDTA, 7% maleic acid, and 10% citric acid.
引用
收藏
页码:1820 / 1823
页数:4
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