Dental and Medical Problems
2019, vol. 56, nr 2, April-June, p. 155–159
Publication type: original article
Comparative evaluation of the efficacy of three methods of delivering calcium hydroxide into the root canal
Ocena porównawcza skuteczności trzech metod wprowadzania wodorotlenku wapnia do kanału korzeniowego
1 Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences, Iran
2 Department of Oral and Maxillofacial Radiology, School of Dentistry, Kermanshah University of Medical Sciences, Iran
3 Student Research Committee, School of Dentistry, Kermanshah University of Medical Sciences, Iran
4 Oral and Dental Sciences Research Laboratory, School of Dentistry, Kermanshah University of Medical Sciences, Iran
5 Department of Oral and Maxillofacial Medicine, School of Dentistry, Kermanshah University of Medical Sciences, Iran
6 Department of Pediatric Dentistry, School of Dentistry, Kermanshah University of Medical Sciences, Iran
7 Department of Prosthodontics, School of Dentistry, Kermanshah University of Medical Sciences, Iran
8 Department of Orthodontics, School of Dentistry, Kermanshah University of Medical Sciences, Iran
Background. Calcium hydroxide, due to its favorable properties, such as an antimicrobial effect as well as its ability to dissolve necrotic tissues, inhibit tooth resorption and stimulate the formation of a hard tissue barrier, is widely used in root canal treatment.
Objectives. The objective of this study was to compare the efficacy of 3 methods of delivery of calcium hydroxide into the canals.
Material and Methods. This in vitro experimental study was performed on acrylic resin blocks with simulated curved canals (curvature of 24° and 44°). Calcium hydroxide was delivered into the canals with 3 different instruments : a hand file, a Lentulo and a rotary file. The data was analyzed using the three-way analysis of variance (ANOVA) and Tukey’s test.
Results. The density of calcium hydroxide was significantly different among the 3 groups (p < 0.001). The manual delivery technique resulted in the lowest and using a rotary file in the highest density of calcium hydroxide (p < 0.001). The mean density of calcium hydroxide was significantly higher in the canals with curvature of 24°, irrespective of the delivery method (p < 0.001). The lowest mean density of calcium hydroxide was noted at 1 mm and 3 mm from the apex, whereas the highest mean density was noted at 11 mm from the apex, irrespective of delivery method (p < 0.001).
Conclusion. A rotary file seems to be the most efficient instrument for delivering calcium hydroxide into the canals, especially into the apical region of canals with greater curvature.
calcium hydroxide, hand file, rotary file
wodotlenek wapnia, pilnik ręczny, pilnik obrotowy
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