Influence of ultrasonics on the penetration depth of AH plus, acroseal, and EndoREZ root canal sealers: An in vitro study

Abstract

Aim:The aim of this study is to evaluate the effect of ultrasonic activation on the penetration depth of AH Plus, Acroseal, and EndoREZ sealers into dentinal tubules using Confocal laser microscopy.Methods:A total of 60 single-rooted teeth were prepared and divided into three groups on the basis of the type of sealer used (G1: AH Plus, G2: Acroseal and G3:EndoREZ). Each group was further subdivided into two equal subgroups on the basis of ultrasonic activation of sealers and nonactivation. Teeth were obturated and coronally sealed with GIC. Horizontal sections at 2 mm, 4 mm, and 6 mm from the apex were obtained, and the depth of sealer penetration into the dentinal tubules was measured using confocal laser scanning microscopy. Statistical analysis was performed using Students unpaired t-test, ANOVA, and Tukey's multiple comparison test.Results:Within the three groups, ultrasonically activated subgroups showed significantly (P < 0.05) higher depth of sealer penetration. Among the groups, Group 1 showed significantly (P < 0.05) higher depth of sealer penetration than Group 2 and Group 3 while the difference between Group 2 and Group 3 was not significant (P > 0.05).Conclusion:The use of ultrasonic activation with AH Plus sealer showed better results.

Effect of different sealer activation techniques on dentinal tubule penetration

“…Recent studies that investigated the influence of ultrasonic activation on the tubular penetration presented conflicting results [4][5][6][8][9][10][11][12]. Accordingly, in some studies, ultrasonic activation was found to increase sealer penetration [5,6,[8][9][10][11][12], while in other studies, no significant effect was reported [4,9,10]. There are also studies reporting that ultrasonic activation resulted in increased tubular penetration depending on the sealer type [9,10].…”

“…The sealer placement technique can affect the quality of obturation [4][5][6][7]. Sealers can also be activated during placement for better penetration to the canal irregularities and dentin tubules [8][9][10][11][12]. The activation is generally performed with several sonic or ultrasonic tips connected to their specific equipment which produce high frequency of oscillations [8][9][10][11][12].…”

“…Sealers can also be activated during placement for better penetration to the canal irregularities and dentin tubules [8][9][10][11][12]. The activation is generally performed with several sonic or ultrasonic tips connected to their specific equipment which produce high frequency of oscillations [8][9][10][11][12]. Ultrasonic tips produce oscillation at a frequency between 25 000 and 30 000 Hz [12] while sonic systems such as EndoActivator (Dentsply Tulsa Dental Specialties, Tulsa, OK, USA) works at lower frequencies (33-167 Hz) [13].…”

“…Ultrasonic tips produce oscillation at a frequency between 25 000 and 30 000 Hz [12] while sonic systems such as EndoActivator (Dentsply Tulsa Dental Specialties, Tulsa, OK, USA) works at lower frequencies (33–167 Hz) [13]. Sonic and ultrasonic activation can be effective in terms of sealer penetration [4–7, 9–12, 14].…”

Effect of phytic acid and ethylenediaminetetraacetic acid on penetration depth of bioceramic and resin sealers

“…The master gutta-percha coating technique is the simplest method and was adopted in the present study, since it requires no additional instruments and procedures. Recent studies found that the depth of sealer penetration is influenced by the type of placement technique and by the root canal level (13,14). However, some previous studies revealed that sealer distribution along canal walls was not influenced by the sealer placement technique (15).…”