Accuracy of placement of calcium hydroxide medicament during root canal treatment using different new delivery methods -a CBCT approach Available to Purchase

Usage of intracanal medicaments is a routine procedure in root canal treatment. Calcium Hydroxide (Ca(OH)2) is one of the most popular intracanal materials that has been reported to work efficaciously in decreasing the microbial load and thereby increasing the prognosis of the treatment. However, the mechanism of accurate placement of the material is often a challenge for the practitioner. This study compared the efficacy of five different delivery methods for placement of Ca(OH)2 medicament into the root canal and its evaluation using CBCT (Cone Beam Computed Tomography). 100 extracted human single-rooted teeth were decoronated to standardize the root length and were subsequently prepared with Protaper Gold endodontic rotary files in a sequential manner. After cleaning and shaping the roots were divided into five groups based on five delivery techniques of Ca(OH)2 paste (Ultracal XS) based on group 1: Hand K files; group 2: rotary lentulospirals; group 3: EndoActivator; group 4: Ultrasonic Tip and group 5: NaviTips. Two parameters including the volume of voids and apical limit of the root canal fillings were observed under CBCT and analyzed statistically using One Way ANOVA and Bonferroni test. The void volume percentage was lowest in the Ultrasonic Tip group followed by the EndoActivator group, K file group, Navitip group, and Lentulospiral Group respectively (p <0.05). Similarly, apical limit filling measurement was closest to the apex in the Ultrasonic group followed by Endoactivatorgroup, Navitip group, Lentulospiral group, and K file group respectively (p<0.01). In conclusion, none of the 5 delivery methods could completely fill the root canal system, nor could these material systems reach the apex, although superior compaction of calcium hydroxide and the best apical limit filling was observed in the Ultrasonic Tip group. This finding may indeed help clinicians for better usage and placement of Ca(OH)2 intracanally and more studies and development regarding the same can be assessed in the future.