Amir-Teymour Moinzadeh1,2, Roeland J G De Moor2, Mieke A A De Bruyne3. 1. Department of Endodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University, Gustav Mahler Laan 3004, 1081 LA, Amsterdam, the Netherlands. 2. Department of Operative Dentistry and Endodontology, Tand-, mond- en kaakziekten, Ghent University Hospital, De Pintelaan 185, 9000, Ghent, Belgium. 3. Department of Operative Dentistry and Endodontology, Tand-, mond- en kaakziekten, Ghent University Hospital, De Pintelaan 185, 9000, Ghent, Belgium. mieke.debruyne@ugent.be.
Abstract
OBJECTIVE: The objective of this study is to evaluate the influence of a calcium hydroxide intracanal dressing (CH) on the short- and long-term sealing ability of the root canal filling using capillary flow porometry (CFP). MATERIALS AND METHODS: To verify the repeatability of the method, five obturated specimens were submitted to CFP. Measurements were repeated three times and compared with the non-parametric Friedman test. Forty-five instrumented palatal roots were randomly divided into three groups. Group 1: specimens were obturated in one step without placement of any dressing. Group 2: CH was placed and removed after 1 week with syringe irrigation before obturation. Group 3: CH was placed and removed after 1 week with ultrasonic activation before obturation. CFP measurements were conducted at 1 week and 6 months after obturation. The inter-group comparisons were performed using the Kruskal-Wallis test and the intra-group comparison over time using the Wilcoxon signed-rank test. Significance level was set at 0.05. RESULTS: In the five specimens, no difference could be detected between the consecutive measurements for minimum, mean flow, and maximum pore diameter indicating repeatability of the method. No difference in sealing ability could be detected neither between the 3 groups at 1 week and at 6 months nor within each group between the 1 week and the 6 months measurements. CONCLUSIONS: Placement of a CH did not affect significantly the short- and long-term sealing ability of the root canal filling. CLINICAL RELEVANCE: The use of an intermediary CH does not negatively influence the quality of the root canal filling.
RCT Entities:
OBJECTIVE: The objective of this study is to evaluate the influence of a calcium hydroxide intracanal dressing (CH) on the short- and long-term sealing ability of the root canal filling using capillary flow porometry (CFP). MATERIALS AND METHODS: To verify the repeatability of the method, five obturated specimens were submitted to CFP. Measurements were repeated three times and compared with the non-parametric Friedman test. Forty-five instrumented palatal roots were randomly divided into three groups. Group 1: specimens were obturated in one step without placement of any dressing. Group 2: CH was placed and removed after 1 week with syringe irrigation before obturation. Group 3: CH was placed and removed after 1 week with ultrasonic activation before obturation. CFP measurements were conducted at 1 week and 6 months after obturation. The inter-group comparisons were performed using the Kruskal-Wallis test and the intra-group comparison over time using the Wilcoxon signed-rank test. Significance level was set at 0.05. RESULTS: In the five specimens, no difference could be detected between the consecutive measurements for minimum, mean flow, and maximum pore diameter indicating repeatability of the method. No difference in sealing ability could be detected neither between the 3 groups at 1 week and at 6 months nor within each group between the 1 week and the 6 months measurements. CONCLUSIONS: Placement of a CH did not affect significantly the short- and long-term sealing ability of the root canal filling. CLINICAL RELEVANCE: The use of an intermediary CH does not negatively influence the quality of the root canal filling.
Authors: Anne Wiseman; Timothy C Cox; Avina Paranjpe; Natasha M Flake; Nestor Cohenca; James D Johnson Journal: J Endod Date: 2011-02 Impact factor: 4.171