Page 103 - Demo

No medicament versus calcium hydroxide1016length. After finishing the preparation, irrigation was completed using ultrasonicactivated irrigation: three times 20 seconds, using an ultrasound needle (IrriSafe™, ACTEON® Group, Merignac, France) and 2% sodium hypochlorite. In the cohort of patients who received an intracanal medicament, the canals were dried with paper points and calcium hydroxide paste (UltraCal® XS 30%-35%, Ultradent Products. Inc., South Jordan, UT, USA) was placed using a capillary tip (Ultradent Products. Inc., South Jordan, UT, USA) before the temporary restoration was made. Both teeth with or without intracanal medicament were temporarily restored with temporary filling material (Cavit™ W, 3M, St. Paul, MN, USA) and glass ionomer cement (Ketac™, 3M, St. Paul, MN, USA) between visits. Data acquisitionData were obtained from the dental records system using spreadsheets with drop-down lists to prevent typos. They were retrieved by two observers. A third observer checked the data randomly to assure that the collection was done properly. The observers signed confidentiality agreement forms, and the data were processed anonymously. Statistical AnalysesData were analysed using IBM SPSS Statistics version 21.0 software (IBM corporation, Armonk, NY, USA). Pearson’s chi-squared, and if indicated, Fisher’s exact tests were performed to analyse the distribution of variables other than the dependent variable – interappointment emergencies – over the two cohorts, and to analyse the relationship between those variables and the occurrence of interappointment emergencies. For cross tables larger than two by two, adjusted standardized residual values were used to find out for which sub-variables the count deviated from the expected count. To analyse whether omitting the use of calcium hydroxide intracanal medicament during multiple-visit root canal treatment was associated with the incidence of interappointment emergencies, binary logistic regression analyses were performed, and corrections were done for the variables that were related to interappointment emergencies and may influence the incidence of interappointment emergencies. The significance level was set at 0.05. Annemarie Baaij.indd 101 28-06-2023 12:26