Evaluation of the antibacterial effects of intracanal Nd: YAG laser irradiation

Hardee, Michael W.; Miserendino, Leo J.; Kos, William; Walia, Harmeet

doi:10.1016/s0099-2399(06)80294-3

Cited by 85 publications

(55 citation statements)

References 10 publications

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“…Encouraging results were obtained with the CO 2 laser [6,7], the Nd:YAG laser [8,9,10,11,12] and the Excimer laser [13,14]. In an in vitro study, we examined the effects of diode laser irradiation on infected root canals and obtained promising results [15].…”

Section: Introductionmentioning

confidence: 99%

Irradiation of infected root canals with a diode laser in vivo: Results of microbiological examinations

Moritz

Gutknecht²,

Schoop

et al. 1997

Lasers Surg. Med.

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Section: Introductionmentioning

confidence: 99%

Irradiation of infected root canals with a diode laser in vivo: Results of microbiological examinations

Moritz

Gutknecht²,

Schoop

et al. 1997

Lasers Surg. Med.

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“…Chan et al stated that different diode wavelengths can affgect their bactericidal activity, however this or presence of another bacterial species in the canal has a little scientific value since the bactericidal effect depends on the excessive heating and rupture of the bacterial cells and not on specific cellular elements. Even against heat resistant Bacillus stearothermophilus Nd:YAG laser irriadiation can be effective to achieve below 10 2 CFU/ml reduction (Hardee et al 1994). However pigmentation affects bacterial sensitivity to great extent due to increasing the absorption coefficient , even for resistant bacteria a methylene blue pigmentation will increase their sensitiy to diode laser irradiation (Chan et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of The Efficacy of Diode Laser, Chlorhexidine Digluconate Gel and Calcium Hydroxide Paste In The Disinfection Of Candida Albicans Infected Root Canals, In Vitro Study

Jadir¹

2016

Iraqi dent. j.

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ABSTRACTthe study aims to evaluate the efficacy of CHX-gel, Ca(OH) 2 and diode laser in eliminating C.albicans from the root canal system and hence to eliminate the chances of reinfection and minimize treatment time. Materials and methods: 180 single rooted anterior teeth were prepared and divided into 4 equal groups, the first was prepared to ISO 60 while the 2 nd -4 th were prepared only to ISO40, all the teeth were then sterilized and inoculated with C.albicans suspensions for 14 days, followed by evaluation of the starting bacterial counts in each tooth by means of colony forming units (CFU/ml), after this the groups 2-4 were prepared to ISO 40 MAF, using NaCl 9% in the 2 nd group, NaOCl 1% in the 3 rd and CHX 0.2% in the 4 th . Finally each of the 4 groups was divided into three subgroups (n=20), the first irradiated with diode laser, the second with injected with Ca(OH) 2 paste and the third injected with CHX-gel for 7 days, followed by estimation of the end bacterial counts in CFU/ml in canal lumen and in dentin. Results : the reduction of C.albicans was higher in all the groups after Ca(OH) 2 and CHX gel injection than with diode laser irradiation (p<0.001, Chi-square test). After chemomechanical preparation a higher effectivity of the laser disinfection was shown and more specimen could reach the lower limit values, the effectiveness was also increased by the use of NaOCl or CHX as irrigants (p<0.001).

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“…56) It is well established in literature that thermal elevation produced by Nd:YAG laser is more than 5.5°C which is physiologically acceptable 57) and could cause unrecoverable response by surrounding tissue. 49,58,59) In addition, Cox and Türkmen 60,61) showed uncontrolled Nd:YAG laser irradiation may cause many undesirable effects on root canal walls. Smear layer could be formed and occlusion of some dentinal tubules linked with structural modification of dentin (recrystallization, melting and carbonization) may also be observed.…”

Section: Nd:yagmentioning

confidence: 99%