Effect of the Controlled Delivery of Chelating Agents on the Pulp Tissue Dissolution Ability of Fresh Sodium Hypochlorite Solutions

Navarrete, Natalia; Almansa, Juan M; Macorra, José C. de la; Arias-Moliz, María Teresa; Arias, Ana

doi:10.1016/j.joen.2022.12.009

Cited by 5 publications

(3 citation statements)

References 35 publications

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“…There was a significant difference between the use of distilled water and NaOCl, in line with previous studies that demonstrated the tissue dissolution capacity of NaOCl [ 3 , 29 – 31 ]. It is essential to mention that the difference between the irrigation solutions tested could be higher if the exposure time to NaOCl were longer, as previous studies demonstrate a time-dependent effect on organic tissue dissolution by NaOCl [ 32 , 33 ].…”

Section: Discussionsupporting

confidence: 87%

Mechanical activation with Easy Clean device enhanced organic tissue removal from simulated internal root resorption in a laboratory evaluation

et al. 2023

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Background Considering the irregular shape of the root canal, removing inflamed pulp and granulation tissue completely from internal resorption cavities during chemomechanical preparation can be challenging. This study aimed to evaluate the effectiveness of passive ultrasonic irrigation (PUI) compared to mechanical activation with Easy Clean in the removal of organic tissue from simulated areas of internal root resorption. Methods The root canals of 72 extracted single-rooted teeth with oval canals were instrumented with Reciproc R25 instruments. After root canal preparations, the specimens were split longitudinally, and semicircular cavities were prepared using a round bur on each half of the roots. Samples obtained from bovine muscle tissue were weighed and adapted into semicircular cavities. The roots were reassembled and joined, and the teeth were divided into six groups (n = 12) according to the irrigation protocol: Sodium hypochlorite (NaOCl) without activation; NaOCl + PUI; NaOCl + Easy Clean; distilled water without activation; distilled water + PUI; and distilled water + Easy Clean. After irrigation protocols, the teeth were disassembled, and the remaining organic tissue was weighed. Data were analyzed by two-way ANOVA and Tukey’s post hoc test (p < 0.05). Results None of the experimental protocols totally removed the bovine tissue from simulated cavities. Tissue weight reduction was significantly affected by the activation method (p < 0.05) and by irrigation solution (p < 0.05). Groups with NaOCl irrigation presented higher tissue weight loss when compared to distilled water, for all irrigation methods (p < 0.05). The use of Easy Clean resulted in the greatest tissue weight loss (42.0%—Distilled water/45.5%- NaOCl) compared to those of PUI (33.3%—Distilled water/37.7%- NaOCl) and no activation (33.4%—Distilled water/38.8%- NaOCl) (p < 0.05). However, no differences were observed between PUI and no activation groups (p > 0.05). Conclusions Mechanical activation with Easy Clean enhanced organic tissue removal from simulated internal resorption more effectively than PUI. Easy Clean for agitation of the irrigating solution is effective in removing simulated organic tissues from artificial internal resorption cavities, being an alternative to the use of PUI.

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Section: Discussionsupporting

confidence: 87%

Mechanical activation with Easy Clean device enhanced organic tissue removal from simulated internal root resorption in a laboratory evaluation

et al. 2023

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“…Sodium hypochlorite (NaOCI) is the most used irrigant in endodontic practice, mainly due to its ability to dissolve organic tissue and antimicrobial properties 11 , 12 . Several NaOCI concentrations from 0.5% to 6% 13 can be found in the endodontic literature. The sonic or ultrasonic activation of NaOCI promotes, in addition to cavitation, heating of the irrigating solution 13 that causes an acceleration in the collagen dissolution rate 12 , 14 , 5 .…”

Section: Introductionmentioning

confidence: 99%

“…Several NaOCI concentrations from 0.5% to 6% 13 can be found in the endodontic literature. The sonic or ultrasonic activation of NaOCI promotes, in addition to cavitation, heating of the irrigating solution 13 that causes an acceleration in the collagen dissolution rate 12 , 14 , 5 .…”

Section: Introductionmentioning

confidence: 99%

Assessment of the root surface temperature during the use of intracanal agitation systems: In vitro study

Fontanezi,

Bronzato,

Mohara

et al. 2023

Braz. Dent. J.

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This study aimed to evaluate the temperature changes that the different methods of agitation of irrigants promote on the external dental root surface. Nine extracted human lower premolars were standardized by cone-beam computed tomography and used. The root canal was instrumented with a Reciproc 40.06 file. Temperature measurement was performed using K-type thermocouple sensors attached to the middle, cervical, and apical thirds of the teeth. The teeth had their roots immersed in distilled water at 37ºC, which were distributed into 3 experimental groups according to the mechanical agitation methods to be studied. US Group (n=3), Irrisonic Ultrasonic Tip activated through ultrasound; EC Group (n=3), Easyclean Tip coupled to a contra-angle low-speed handpiece; XP Group (n=3), XP-endo Finisher file coupled to an endodontic electrical motor. Temperature measurements were performed simultaneously with agitation and irrigation of intracanal irrigants. Statistical analysis was performed using SPSS software with a significance level of 5%. For multiple comparisons, the Tukey test was used. The association between mechanical agitation methods and root third was statistically significant. Regarding the temperatures recorded on the external surface of the roots, the ultrasonic tip was significantly higher than the XP-endo Finisher file and the Easyclean tip, which did not differ from each other. Regarding the ultrasonic tip, the external temperature in the middle third (39.46ºC) of the root was significantly lower than in the cervical (40.41ºC) and apical third (40.53ºC). None of the agitation methods of irrigants studied presented heating above 47ºC, and their use is safe for periodontal tissues.

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Insights into the March 2023 Issue of the JOE

Aminoshariae¹,

Azarpazhooh²,

Fouad³

et al. 2023

Journal of Endodontics

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Effect of the Controlled Delivery of Chelating Agents on the Pulp Tissue Dissolution Ability of Fresh Sodium Hypochlorite Solutions

Cited by 5 publications

References 35 publications

Mechanical activation with Easy Clean device enhanced organic tissue removal from simulated internal root resorption in a laboratory evaluation

Mechanical activation with Easy Clean device enhanced organic tissue removal from simulated internal root resorption in a laboratory evaluation

Assessment of the root surface temperature during the use of intracanal agitation systems: In vitro study

Insights into the March 2023 Issue of the JOE

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