High-power diode laser in the disinfection in depth of the root canal dentin

Souza, Eliana Barbosa de; Cai, Silvana; Simionato, Maria Regina Lorenzetti; Lage‐Marques, José Luiz

doi:10.1016/j.tripleo.2008.02.032

Cited by 92 publications

(79 citation statements)

References 27 publications

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“…Both methods effectively reduced the CFU/ml without any statistically significant differences. The results on the disinfection effect of high power diode lasers are consistent with the studies of Preethee et al 30 and De Souza et al 31 Using high power diode lasers, Radaelli et al 32 also achieved similar results. The studies mentioned were all in vivo and based on the microbial culture.…”

Section: Discussionsupporting

confidence: 87%

Comparison of the Antibacterial Effect of 810 nm Diode Laser and Photodynamic Therapy in Reducing the Microbial Flora of Root Canal in Endodontic Retreatment in Patients With Periradicular Lesions

et al. 2016

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IntroductionMicrobial infection plays an important role in persistent periapical lesions.1 Insufficient disinfection of root canals could lead to treatment failure and persistent periapical pathology. 2Conventional techniques of root canal treatments such as mechanical instrumentation and chemical debridement with antimicrobial irrigants, such as sodium hypochlorite (NaOCl), chlorhexidine and calcium hydroxide do not always suffice to predictably render root canals free of bacteria.3,4 Factors such as anatomical complexities, bacterial growth as biofilm, render complete disinfection of the root canal system almost impossible. 5Studies have revealed a success rate of 94% with a negative culture before obturation has decreased to 68%, with a positive culture.2 Resolution of periapical lesions is more achievable when there is negative culture before obturation. 6Cross sectional studies have reported 20%-60% of treatment failure and 52% of endodontic failure in Iranian population.7-10 Existence of intracanal microorganisms would lessen the treatment outcomes of endodontic re-treatment comparing to primary endodontic treatment. 2Based on the previous studies, bacterial microflora in teeth with failed endodontic treatment is different from the microflora of the primary endodontic infection. All culture and PCR based methods have shown that primary endodontic infection is a polymicrobial infection involving fully anaerobic microorganisms, 5,11 while the failure AbstractIntroduction: The aim of this study was to compare the antibacterial efficacy of diode laser 810nm and photodynamic therapy (PDT) in reducing bacterial microflora in endodontic retreatment of teeth with periradicular lesion. Methods: In this in vivo clinical trial, 20 patients who needed endodontic retreatment were selected. After conventional chemo mechanical preparation of root canals, microbiological samples were taken with sterile paper point (PP), held in thioglycollate broth, and then were transferred to the microbiological lab. In the first group, PDT with methylene blue (MB) and diode laser (810 nm, 0.2 W, 40 seconds) was performed and in the second group diode laser (810 nm, 1.2 W, 30 seconds) was irradiated. Then second samples were taken from all canals. Results: CFU/ml amounts showed statistically significant reduction in both groups (P < 0.001). CFU/ml amounts were compared between the two groups and there was no statistical difference. Conclusion: PDT and diode laser 810 nm irradiation are effective methods for root canal disinfection. PDT is a suitable alternative for diode laser 810 nm irradiation, because of lower thermal risk on root dentin.

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Section: Discussionsupporting

confidence: 87%

Comparison of the Antibacterial Effect of 810 nm Diode Laser and Photodynamic Therapy in Reducing the Microbial Flora of Root Canal in Endodontic Retreatment in Patients With Periradicular Lesions

et al. 2016

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“…These results are in agreement with previous studies using similar methodologies. 14,26 Unlike previous studies, which assessed the effectiveness of the reciprocating technique in disinfecting root canals, the present study involved sectioning of the roots into thirds, and collection of dentin chips from the root canal walls. This approach enables the evaluation of the effects of the different preparation techniques on different portions of the root canal.…”

Section: Discussionmentioning

confidence: 99%

Ex vivo evaluation of three instrumentation techniques on E. faecalis biofilm within oval shaped root canals

et al. 2015

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Ex vivo evaluation of three instrumentation techniques on E. faecalis biofilm within oval shaped root canals Abstract: The objective of the present study was to assess the effectiveness of reciprocating instrumentation in disinfecting oval-shaped root canals infected with Enterococcus faecalis. Forty-five human lower premolars were infected with a culture of E. faecalis (ATCC 29212) for 28 days. Five other teeth that were neither contaminated nor instrumented were used as controls. The 45 specimens were divided into three experimental groups (n = 15) based on the root canal preparation technique used: manual (K-type, Dentsply Maillefer, Ballaigues, Switzerland); rotary (MTwo, VDW GmbH, Munich, Germany); and reciprocating (Reciproc R50, VDW GmbH, Munich, Germany) instruments. During chemomechanical preparation, 21 mL of 2.5% NaOCl was used as the irrigating solution. Microbiological sampling was performed before (S1) and immediately after (S2) the chemomechanical preparation using sterilized paper points. Specimens were then cleaved, and 0.02 g of dentine chips was collected from the root thirds to verify the presence of microorganisms in dentinal tubules. All three preparation techniques reduced the number of microorganisms in the root canal lumen and dentine chips from the root thirds, but no significant differences were observed between the three groups (p > 0.05). Reciprocating instrumentation with Reciproc R50 was effective in reducing the number of microorganisms within the root canal system. Although this technique involves the use of only one file to perform the root canal therapy, it is as effective as conventional rotary instrumentation in reducing the E. faecalis biofilm from the root canal system. However, further clinical investigations are warranted in order to ratify these results.

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“…Diode laser showed good results as an extra adjunct to the classical methods in the management of inflamed periodontal tissues and endodontics [3,5,6]. …”

Section: Introductionmentioning

confidence: 99%

Upper-lip laser frenectomy without infiltrated anaesthesia in a paediatric patient: a case report

et al. 2009

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Labial frenectomy is a common surgical procedure in the field of oral surgery. Labial frenectomy is a procedure usually done for orthodontic reasons. The role of laser surgery in the oral cavity is well established. The use of diode laser frenectomy without infiltrated anaesthesia is currently under investigation. Needle-less oral surgery, without infiltrated anaesthesia, is a novel situation in paediatrics with paramount importance.

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High-power diode laser in the disinfection in depth of the root canal dentin

Cited by 92 publications

References 27 publications

Comparison of the Antibacterial Effect of 810 nm Diode Laser and Photodynamic Therapy in Reducing the Microbial Flora of Root Canal in Endodontic Retreatment in Patients With Periradicular Lesions

Comparison of the Antibacterial Effect of 810 nm Diode Laser and Photodynamic Therapy in Reducing the Microbial Flora of Root Canal in Endodontic Retreatment in Patients With Periradicular Lesions

Ex vivo evaluation of three instrumentation techniques on E. faecalis biofilm within oval shaped root canals

Upper-lip laser frenectomy without infiltrated anaesthesia in a paediatric patient: a case report

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