The effect of passive ultrasonic activation of 2% chlorhexidine or 3% sodium hypochlorite in canal wall cleaning

Llena, Carmen; Cuesta, Carla; Forner, Leopoldo; Mozo, Sandra; Segura, Juan-Jose

doi:10.4317/jced.52088

Cited by 10 publications

(11 citation statements)

References 33 publications

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“…Other authors report an increased antibacterial activity of CHX, since increasing its penetration into the dentin tubules increases the effect of the irrigant 14 .…”

Section: Discussionmentioning

confidence: 99%

“…It is important to note that the study carried out by Gu et al 18 included other irrigants, such as EDTA, NaClO and sodium chloride (NaCl), which makes us infer that there are differences in the activation of different irrigants. Despite the controversies found in some studies, there is a general consensus that US activation of the irrigant is more effective than the use of a conventional syringe 14,19,20 .…”

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confidence: 99%

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Sonic versus ultrasonic activation for the cleaning of the root canal after post space preparation: an in vitro study.

Carrasco¹,

Román²,

Ojeda³

et al. 2015

Joralres

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Sonic versus ultrasonic activation for the cleaning of the root canal after post space preparation: an in vitro study. Cite as: Carrasco R, Román R, Ojeda M & Vergara C. Sonic versus ultrasonic activation for the cleaning of the root canal after post space preparation: an in vitro study. J Oral Res 2015; 4(4): 255-262.Abstract: Objective: To compare the efficacy of 3 intracanal cleaning protocols used before cementation of prosthetic posts. Material and Methods: 40 anterior teeth received endodontic treatment in hand, using lateral condensation technique. After two weeks, gutta-percha was appropriately removed from the teeth to get the necessary space to install a post. Then, teeth were randomly divided into groups; root surface was treated with chlorhexidine (CHX) activated by ultrasound (US) (group I), with chlorhexidine activated by sonic instrumentation (S) (group II), chlorhexidine without activation (group III) and without treatment (group IV). All teeth were fractured longitudinally getting 2 sections. The middle third of the root canal was microphotographed with a scanning electron microscope (SEM) and the contaminated surface was measured using detritus with ImageJ 1.47. INTRODUCTION.Endodontically treated teeth usually require a post inside the root canal to retain a coronal restoration 1 . Fiber posts offer advantages over metal posts, such as favorable fracture patterns that could be restored because they are less rigid, and because they provide an easy removal of the post from the root canal in case of repeated endodontic treatment 2 .Various resin cements are used for bonding fiber posts. The method of application involves multiple steps, and is rather complex and dependent on the technique used by the dentist, and therefore it may affect the quality of the adhesion 3 .Manufacturers suggest removing detritus or debris from tooth surfaces by using ultrasound or pumice. They also suggest keeping tooth surface clean with ethanol, citric acid, ethylenediaminetetraacetic acid (EDTA) or phosphoric acid to improve adhesion and eliminate any residue 4 .However, surface treatments with different root dentin agents can cause changes in its chemical and structural composition, which in turn, may alter its permeability and solubility characteristics 5 .It is important to have in mind that the penetration of irrigation in the canal depends on the anatomy of the root canal, on the irrigant application techniques, the volume of the solution, instrumentation of the root canal and physicochemical characteristics of the irrigant 6 . The- of the treated dentin.Cecchin et al. 7 compared bond strength and fracture patterns between experimental groups irrigated with chlorhexidine (CHX), under different application times (30, 60, and 120 seconds) and a control group irrigated with saline. Significant differences for both fracture patterns and bond strength were observed. They concluded that the use of CHX pretreatment could preserve the bond strength of the fiber post for 12 months using resin cement, regardless of the ...

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“…Other authors report an increased antibacterial activity of CHX, since increasing its penetration into the dentin tubules increases the effect of the irrigant 14 .…”

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Sonic versus ultrasonic activation for the cleaning of the root canal after post space preparation: an in vitro study.

Carrasco¹,

Román²,

Ojeda³

et al. 2015

Joralres

View full text Add to dashboard Cite

show abstract

“…Activation of irrigant is effective in removing debris and opening dentinal tubules, regardless of the solution 2,5,20 .…”

Section: Discussionmentioning

confidence: 99%

“…resorption 9 . It is for this reason that the debridement of the internal resorption can be challenging in irrigation and intracanal medication with respect to the removal of bacteria and traces of necrotic tissue within the canal, which pose even greater difficulty in removal 2,20,22 .…”

Section: Discussionmentioning

confidence: 99%

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Management of an internal root resorption on a permanent tooth. A case report.

Maldonado¹,

Muñoz²

2015

Joralres

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Cite as: Maldonado A & Muñoz E. Management of an internal root resorption on a permanent tooth. A case report. J Oral Res 2015; 4(4): 275-281. Abstract: Internal root resorption (IRR) is a rare pulp disease. Its etiology involves late pulpal inflammations and trauma, among others. IRR may also show some symptoms, and is usually detected by X-rays. However, its diagnosis is significantly improved by the use of cone beam computed tomography (CBCT). The objective of this case report was to account for the diagnosis and management of an internal root resorption without perforation. The patient, a 26-year-old male, went to the School of Dentistry at Universidad Andres Bello, Concepción, without having symptoms in the tooth 1.1. Anamnesis revealed the presence of previous symptoms. CBCT examination showed absence of bowl-shaped calcified dentin tissue on the inner walls of the root canal with apical lesion but without perforation of surrounding tissues. Endodontic treatment was performed using the following methods: irrigation of the root canal with 2% chlorhexidine (CHX) using a Max-i-probe cannula and simultaneous cavitation of the irrigant Then calcium hydroxide (CH) was applied as intracanal medication for a week and Schilder's technique for vertical compaction was used. The patient was checked after one week and then after six months. He did not have any symptoms. Early diagnosis using modern imaging equipment, appropriate use of ultrasound for chemomechanical debridement and thermoplastic filling techniques contribute to a more favorable prognosis of patients with internal root resorption.

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Can antimicrobial photodynamic therapy serve as an effective adjunct protocol for disinfecting the necrotic root canal system? A randomized controlled study

Barazy,

Alafif,

Achour

et al. 2024

BDJ Open

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Background Bacterial infection plays an important role in persistent periapical lesions and inadequate disinfection of root canals is considered the biggest factor responsible for endodontic treatment failure. Antimicrobial Photodynamic Therapy (aPDT) has become the latest choice to eradicate microorganisms in root canals. Objective This study aims to evaluate the effectiveness of Antimicrobial Photodynamic Therapy (aPDT) in bacterial count reduction compared to Passive Ultrasonic Activation (PUI) and Ca(OH)2 dressings. Materials and methods Forty-five anterior single canal teeth with medium-sized periapical lesions (2–5 mm) were divided into three groups according to the disinfecting technique (each group consists of 15 canals with 1:1:1 allocation ratio): Group A: Ca(OH)2 dressing. Group B: Passive Ultrasonic Activation (PUI). Group C: Antimicrobial Photodynamic Therapy (aPDT). Direct bacterial viable count method was used to count the colonies forming units (CFU) before and after the disinfecting and the bacterial count reduction was estimated, the statistical analysis was performed at a 95% confidence level using the Chi-square and Mann–Whitney U test. Results aPDT showed no statistically significant difference when compared to passive ultrasonic irrigation (P > 0.05) but showed higher and more promising results when compared to Ca(OH)2 dressings (P < 0.05). Conclusions aPDT has the ability and effectiveness as a disinfecting technique in necrotic and infected root canals. Clinical significance of the study The results of this clinical trial provide that aPDT can be considered an adjunct method for root canal disinfection with the same effectiveness as passive ultrasonic irrigation.

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The effect of passive ultrasonic activation of 2% chlorhexidine or 3% sodium hypochlorite in canal wall cleaning

Cited by 10 publications

References 33 publications

Sonic versus ultrasonic activation for the cleaning of the root canal after post space preparation: an in vitro study.

Sonic versus ultrasonic activation for the cleaning of the root canal after post space preparation: an in vitro study.

Management of an internal root resorption on a permanent tooth. A case report.

Can antimicrobial photodynamic therapy serve as an effective adjunct protocol for disinfecting the necrotic root canal system? A randomized controlled study

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