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The Esthetic Crown Lengthening by Er;Cr:YSGG laser: A Case Series

Reza Fekrazad, Mohammad Moharammi, Nasim Chiniforush



Introduction: Laser technology as a new modality in dentistry has gained special attention. Among different types of lasers, erbium lasers have gained special attention for management of oral soft and hard tissue simultaneously. This study presents series of cases of crown lengthening (CL) and restorations accomplished by erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG).
Case Reports: Seven patients were selected for this study. After complete oral examination and diagnosis, the treatment plan of each patient was designed. All cases needed esthetic CL. In some cases, frenum revision and class V cavity preparation was done by Er;Cr:YSGG laser. All patients treated with Er;Cr:YSGG laser producing a wavelength of 2780 nm (Biolase, Irvine, California, USA); Tip T4, 400 μm Diameter for soft tissue management and Tip G6, 6 mm long, 600 μm diameter for hard tissue management.
Results: All patients reflected acceptable results based on clinical evaluation and patients’ declaration of post-surgical status.
Conclusion: Using Er;Cr:YSGG laser in class v cavity preparation and flapless CL seemed to be effective and beneficial.


Er;Cr:YSGG laser; Crown lengthening; Esthetic; Frenectomy; Cavity.


Peters MC, McLean ME. Minimally invasive operative care. II. Contemporary techniques and materials: an overview. J Adhes Dent. 2001;3(1):17-31.

Lizarelli RFZ, Costa MM, Carvalho-Filho E, Nunes FD, Bagnato VS. Selective ablation of dental enamel and dentin using femtosecond laser pulses. Laser Phys Lett. 2008;5(1):63-69. doi:10.1002/lapl.200710082

Malta DAMP, Costa M, Pelino JEP, de Andrade MF, Lizarelli RFZ. Bond strength of an adhesive system irradiated with Nd:YAG laser in dentin treated with Er:YAG laser. Laser Phys Lett. 2008;5(2):144-150. doi:10.1002/lapl.200710089

Stubinger S. Advances in bone surgery: the Er:YAG laser in oral surgery and implant dentistry. Clin Cosmet Investig Dent. 2010;2:47-62.

Keller U, Hibst R, Geurtsen W, et al. Erbium:YAG laser application in caries therapy. Evaluation of patient perception and acceptance. J Dent. 1998;26(8):649-656.

Parhami P, Pourhashemi SJ, Ghandehari M, Mighani G, Chiniforush N. Comparative Study of the Shear Bond Strength of Flowable Composite in Permanent Teeth Treated with Conventional Bur and Contact or Non- Contact Er:YAG Laser. J Lasers Med Sci. 2014;5(3):140-145.

Fekrazad R, Chiniforush N. One visit providing desirable smile by laser application. J Lasers Med Sci. 2014;5(1):47- 50.

Santos CR, Tonetto MR, Presoto CD, et al. Application of Er:YAG and Er, Cr:YSGG Lasers in Cavity Preparation for Dental Tissues: A Literature Review. World J Dent. 2012;3(4):340-343. doi:10.5005/jp-journals-10015-1186

Diaci J, Gaspirc B. Comparison of Er: YAG and Er, Cr: YSGG lasers used in dentistry. Review. J laser health Acad. 2012;1(1):1-13.

Matsumoto K, Hossain M, Hossain MM, Kawano H, Kimura Y. Clinical assessment of Er,Cr:YSGG laser application for cavity preparation. J Clin Laser Med Surg. 2002;20(1):17-21. doi:10.1089/104454702753474968

Boj JR, Poirier C, Hernandez M, Espassa E, Espanya A. Case series: laser treatments for soft tissue problems in children. Eur Arch Paediatr Dent. 2011;12(2):113-117.

McGuire MK, Scheyer ET. Laser-assisted flapless crown lengthening: a case series. Int J Periodontics Restorative Dent. 2011;31(4):357-364.

Jetter C. Soft-tissue management using an Er,Cr:YSGG laser during restorative procedures. Compend Contin Educ Dent. 2008;29(1):46-49.

Hempton TJ, Dominici JT. Contemporary crown-lengthening therapy: a review. J Am Dent Assoc. 2010;141(6):647-655.

Levine RA, McGuire M. The diagnosis and treatment of the gummy smile. Compend Contin Educ Dent. 1997;18(8):757- 762, 764; quiz 766.

Dibart S, Capri D, Kachouh I, Van Dyke T, Nunn ME. Crown lengthening in mandibular molars: a 5-year retrospective radiographic analysis. J Periodontol. 2003;74(6):815-821. doi:10.1902/jop.2003.74.6.815

Farista S, Kalakonda B, Koppolu P, Baroudi K, Elkhatat E, Dhaifullah E. Comparing Laser and Scalpel for Soft Tissue Crown Lengthening: A Clinical Study. Glob J Health Sci. 2016;8(10):55795. doi:10.5539/gjhs.v8n10p73

Gokulanathan S, Mathews D, Daniel R, Ahathya R. Crown lengthening using diode laser: A case series. J Indian Acad Dent Spec Res. 2014;1(2):77-79. doi:10.4103/2229- 3019.148272

Pick RM, Colvard MD. Current status of lasers in soft tissue dental surgery. J Periodontol. 1993;64(7):589-602. doi:10.1902/jop.1993.64.7.589

Harashima T, Kinoshita J, Kimura Y, et al. Morphological comparative study on ablation of dental hard tissues at cavity preparation by Er:YAG and Er,Cr:YSGG lasers. Photomed Laser Surg. 2005;23(1):52-55. doi:10.1089/ pho.2005.23.52

Geraldo-Martins VR, Lepri CP, Palma-Dibb RG. Influence of Er,Cr:YSGG laser irradiation on enamel caries prevention. Lasers Med Sci. 2013;28(1):33-39. doi:10.1007/ s10103-012-1056-9

Hossain M, Nakamura Y, Yamada Y, Kimura Y, Matsumoto N, Matsumoto K. Effects of Er,Cr:YSGG laser irradiation in human enamel and dentin: ablation and morphological studies. J Clin Laser Med Surg. 1999;17(4):155-159. doi:10.1089/clm.1999.17.155

Fekrazad R, Nokhbatolfoghahaei H, Khoei F, Kalhori KA. Pyogenic Granuloma: Surgical Treatment with Er:YAG Laser. J Lasers Med Sci. 2014;5(4):199-205.

Chen CK, Wu YT, Chang NJ, et al. Er:YAG Laser for Surgical Crown Lengthening: A 6-Month Clinical Study. Int J Periodontics Restorative Dent. 2017;37(2):e149-e153. doi:10.11607/prd.2551

DOI: https://doi.org/10.22037/jlms.v9i4.16139