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01-01-2009 | Original Article

The impact of an erbium, chromium:yttrium-scandium-gallium-garnet laser with radial-firing tips on endodontic treatment

Authors: U. Schoop, A. Barylyak, K. Goharkhay, F. Beer, J. Wernisch, A. Georgopoulos, W. Sperr, A. Moritz

Published in: Lasers in Medical Science | Issue 1/2009

Abstract

Radial-firing tips should allow a more homogeneous laser irradiation of root canal walls. The aim of the study was to assess the effects of erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser irradiation in conjunction with those newly designed tips. The investigation comprised bacteriology, morphological evaluations and temperature measurements. Root canals were inoculated with two test strains and laser irradiated with power settings of 0.6 W and 0.9 W and a repetition rate of 20 Hz. Subsequently, the samples were subjected to microbiological evaluation. The morphological changes of the canal walls were assessed by scanning electron microscopy. To reveal possible thermal side effects, we carried out temperature measurements. The bacteriological evaluation revealed a decisive disinfectant effect. Scanning electron microscopy showed the homogeneous removal of smear layer from the root canal walls. The temperature rise at the root surface during the irradiation was moderate, yielding 1.3°C for the 0.6 W setting and 1.6°C for the 0.9 W setting. The investigations indicated that the Er,Cr:YSGG laser, in conjunction with radial-firing tips, is a suitable tool for the elimination of bacteria in root canals and for the removal of smear layer.

Lopez-Marcos JF (2004) Aetiology, classification and pathogenesis of pulp and periapical disease. Med Oral Patol Oral Cir Bucal 9 [Suppl 58–62]; 52–57PubMed

Nair PN (2004) Pathogenesis of apical periodontitis and the causes of endodontic failures. Crit Rev Oral Biol Med 15:348–381PubMedCrossRef

Nair PN, Sjogren U, Krey G, Kahnberg KE, Sundqvist G (1990) Intraradicular bacteria and fungi in root-filled, asymptomatic human teeth with therapy-resistant periapical lesions: a long-term light and electron microscopic follow-up study. J Endod 16:580–588PubMedCrossRef

Sundqvist G, Johansson E, Sjogren U (1989) Prevalence of black-pigmented bacteroides species in root canal infections. J Endod 15:131–139

Kantz WE, Henry CA (1974) Isolation and classification of anaerobic bacteria from intact chambers of non-vital teeth in man. Arch Oral Biol 19:91–96PubMedCrossRef

Zavistoski J, Dzink J, Onderdonk A, Bartlett J (1980) Quantitative bacteriology of endodontic infections. Oral Surg Oral Med Oral Pathol 49:171–174PubMedCrossRef

Chaudhry R, Kalra N, Talwar V, Thakur R (1997) Anaerobic flora in endodontic infections. Indian J Med Res 105:262–265PubMed

Sundqvist G (1998) Microbiologic analysis of teeth with failed endodontic treatment and the outcome of conservative re-treatment. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 85:86–93PubMedCrossRef

Kouchi Y, Ninomiya J, Yasuda H, Fukui K, Moriyama T, Okamoto H (1980) Location of streptococcus mutans in the dentinal tubules of open infected root canals. J Dent Res 59:2038–2046PubMed

10.

Berutti E, Marini R, Angeretti A (1997) Penetration ability of different irrigants into dentinal tubules. J Endod 23:725–727PubMedCrossRef

11.

Distel JW, Hatton JF, Gillespie MJ (2002) Biofilm formation in medicated root canals. J Endod 28:689–693PubMedCrossRef

12.

Noiri Y, Ehara A, Kawahara T, Takemura N, Ebisu S (2002) Participation of bacterial biofilms in refractory and chronic periapical periodontitis. J Endod 28:679–683PubMedCrossRef

13.

Spratt DA, Pratten J, Wilson M, Gulabivala K (2001) An in vitro evaluation of the antimicrobial efficacy of irrigants on biofilms of root canal isolates. Int Endod J 34:300–307PubMedCrossRef

14.

Klinke T, Klimm W, Gutknecht N (1997) Antibacterial effects of Nd:YAG laser irradiation within root canal dentine. J Clin Laser Med Surg 15:29–31PubMed

15.

Vaarkamp J, ten Bosch JJ, Verdonschot EH (1995) Propagation of light through human dental enamel and dentine. Caries Res 29:8–13PubMedCrossRef

16.

Odor TM, Chandler NP, Watson TF, Ford TR, McDonald F (1999) Laser light transmission in teeth: a study of the patterns in different species. Int Endod J 32:296–302PubMedCrossRef

17.

White JM, Goodis HE, Cohen JN (1991) Bacterial reduction of contaminated dentine by Nd:YAG laser. J Dent Res 70:412 (abstract 1170)

18.

Rooney J, Midda M, Leeming J (1994) A laboratory investigation of the bactericidal effect of a Nd:YAG laser. Br Dent J 176:61PubMedCrossRef

19.

Gutknecht N, Moritz A, Conrads G, Sievert T, Lampert F (1996) Bactericidal effect of the Nd:YAG laser in in vitro root canals. J Clin Laser Med Surg 14:77–80PubMed

20.

Moritz A, Doertbudak O, Gutknecht N, Goharkhay K, Schoop U, Sperr W (1997) Nd:YAG Laser irradiation of infected root canals in combination with microbiologic examinations—an in vivo study. J Am Dent Assoc 128:1525–1530PubMed

21.

Schoop U, Kluger W, Moritz A, Nedjelik N, Georgopoulos A, Sperr W (2004) Bactericidal effect of different laser systems in the deep layers of dentin. Lasers Surg Med 35:111–116PubMedCrossRef

22.

Moritz A, Gutknecht N, Goharkhay K, Schoop U, Wernisch J, Sperr (1997) In vitro irradiation of infected root canals with a diode laser: results of microbiologic, infrared spectrometric, and stain penetration examinations. Quintessence Int 28/3:205–209

23.

Schoop U, Kluger W, Dervisbegovic S, Goharkhay K, Wernisch J, Georgopoulos A, Sperr W, Moritz A (2006) Innovative wavelengths in endodontic treatment. Lasers Surg Med 38:624–630PubMedCrossRef

24.

Hibst R, Keller U (1989) Experimental studies of the application of the Er:YAG laser on dental hard substances, I. Measurements of the ablation rate. Lasers Surg Med 9:338–344PubMedCrossRef

25.

Hibst R, Stock K, Gall R, Keller U (1997) Er:YAG laser for endodontics: efficiency and safety, medical applications of lasers in dermatology, ophthalmology, dentistry, and endoscopy. SPIE 3192:14–21CrossRef

26.

Schoop U, Moritz A, Goharkhay K, Rehart A, Enislidis C, Doertbudak O, Wernisch J, Sperr W (1999) Die Anwendung des Er:YAG-Lasers in der Endodontie-eine in-vitro–Studie. Stomatologie 96:23–27

27.

Schoop U, Moritz A, Kluger W, Patruta S, Goharkhay K, Sperr W, Wernisch J, Gattringer R, Mrass P, Georgopoulos A (2002) The Er:YAG laser in endodontics: results of an in vitro study. Lasers Surg Med 30:360–364PubMedCrossRef

28.

Eversole LR, Rizoiu IM (1995) Preliminary investigations on the utility of an erbium, chromium YSGG laser. J Calif Dent Assoc 23:41–47PubMed

29.

Rizoiu I, Kohanghadosh F, Kimmel AI, Eversole LR (1998) Pulpal thermal response to an erbium, chromium:YSGG pulsed laser hydrokinetic system. Oral Surg Oral Med Oral Pathol Oral Endod Oral Radiol 86:220–223CrossRef

30.

Hadley J, Young DA, Eversole LR, Gornbein JA (2000) A laser-powered hydrokinetic system for caries removal and cavity preparation. J Am Dent Assoc 131:777–785PubMed

31.

Yamazaki R, Goya C, Yu DG, Kimura Y, Matsumoto K (2001) Effects of erbium, chromium:YSGG laser irradiation on root canal walls: a scanning electron microscopic and thermographic study. J Endod 27:9–12PubMedCrossRef

32.

Kimura Y, Yu DG, Kinoshita J, Hossain M, Yokoyama K, Murakam Y, Nomura K, Takamura R, Matsumoto K (2001) Effects of erbium, chromium:YSGG laser irradiation on root surface: morphological and atomic analytical studies. J Clin Laser Med Surg 19:69–72PubMedCrossRef

33.

Kienle A, Forster FK, Diebolder R, Hibst R (2003) Light propagation in dentin: influence of microstructure on anisotropy. Phys Med Biol 48:N7–N14PubMedCrossRef

34.

Moritz A, Jakolitsch S, Goharkhay K, Schoop U, Kluger W, Mallinger R, Sperr W, Georgopoulos A (2000) Morphologic changes correlating to different sensitivities of Escherichia coli and Enterococcus faecalis to Nd:YAG laser irradiation through dentin. Lasers Surg Med 26:250–261PubMedCrossRef

35.

Schoop U, Goharkhay K, Klimscha J, Zagler M, Wernisch J, Georgopoulos A, Sperr W, Moritz A (2007) The use of the erbium, chromium:yttrium-scandium-gallium-garnet laser in endodontic treatment: the results of an in vitro study. J Am Dent Assoc 138:949–955PubMed

36.

Lizarelli Rde F, Bagnato VS (2002) Micro-morphological analysis of enamel and dentin exposed to picosecond-pulsed Nd: YAG laser. Pesqui Odontol Bras 16:227–233PubMed

37.

Braucker G, Lubatschowski H, Koort HJ, Ertmer W, Frentzen M (1992) Laser-induced photoacoustic effects in the dentin. Dtsch Zahn Mund Kieferheilkd Zentralbl 80:217–220

Title: The impact of an erbium, chromium:yttrium-scandium-gallium-garnet laser with radial-firing tips on endodontic treatment
Authors: U. Schoop
A. Barylyak
K. Goharkhay
F. Beer
J. Wernisch
A. Georgopoulos
W. Sperr
A. Moritz
Publication date: 01-01-2009
Publisher: Springer-Verlag
Published in: Lasers in Medical Science / Issue 1/2009
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-007-0520-4

At a glance: The STEP trials

Springer Medicine

The impact of an erbium, chromium:yttrium-scandium-gallium-garnet laser with radial-firing tips on endodontic treatment

Abstract

At a glance: The STEP trials

Springer Medicine

Abstract

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