• Logo
  • SBMUJournals

Debonding Time and Dental Pulp Temperature With the Er, Cr: YSGG Laser for Debonding Feldespathic and Lithium Disilicate Veneers

Marzieh Alikhasi, Abbas Monzavi, Hooman Ebrahimi, Maryam Pirmoradian-najafabadi, Ahmadreza Shamshiri, Rezvaneh Sadat Ghazanfari Hashemi
37

Views

PDF

Abstract

Introduction: The removal of ceramic veneers is a time-consuming procedure in a dental
office. Little research has been done in alternative removal techniques for ceramic veneers.
The objective of this study was to evaluate the removal of feldspathic and lithium disilicate
reinforced glass ceramic veneers by Er, Cr: YSGG and to measure debonding time and pulpal
temperature increase during veneer removal.


Methods: Fifty-seven bovine incisor teeth were prepared and divided into 3 groups. Ceramic
specimens with a thickness of 0.7mm, a width of 4mm and a length of 8 mm were fabricated
from feldspathic ceramic, lithium disilicate reinforced glass ceramic HT (high translucency) and
lithium disilicate reinforced glass ceramic MO (medium opacity) (19 for each group). Specimens
were cemented on the labial surface of incisors using resin cement. The Er, Cr: YSGG laser
was applied to each specimen at 2.5 W and 25 Hz. Debonding time was measured for each
specimen, and the intrapulpal temperature was detected in 3 specimens for each group. Data
were analyzed via one-way analysis of variance (ANOVA) at significance level of 0.05 (α = 0.05).


Results: Mean debonding time was 103.68 (26.76), 106.58 (47.22) and 103.84 (32.90) seconds
for feldspathic, lithium disilicate MO, and lithium disilicate HT respectively. There was no
significant statistical difference among the groups (P value = 0.96). The intrapulpal temperature
increase was less than 1°C in all groups.


Conclusion: Er, Cr: YSGG can successfully be used to efficiently debond feldspathic and lithium
disilicate reinforced glass ceramic veneers. There was no significant difference for debonding
time among these ceramic materials. During ceramic laminate veneer removal by laser
irradiation, no irritating temperature rise was detected.


Keywords

Porcelain Laminate Veneer; Er, Cr: YSGG Laser; Debonding

References

Azzaldeen A, Muhamad AH. Restoration of esthetics using ceramics laminate veneer; clinical review: a case report. J Adv Med Dent Sci Res. 2015;3(1):180-185.

Magne P, Hanna J, Magne M. The case for moderate “guided prep” indirect porcelain veneers in the anterior dentition. The pendulum of porcelain veneer preparations: from almost no-prep to over-prep to no-prep. Eur J sthet Dent. 2013;8(3):376-388.

Runnacles P, Correr GM, Baratto Filho F, Gonzaga CC, Furuse AY. Degree of conversion of a resin cement light- cured through ceramic veneers of different thicknesses and types. Braz Dent J. 2014;25(1):38-42.

Kursoglu P, Gursoy H. Removal of fractured laminate veneers with Er:YAG laser: report of two cases. Photomed Laser Surg. 2013;31(1):41-43. doi:10.1089/pho.2012.3410

Nalbantgil D, Oztoprak MO, Tozlu M, Arun T. Effects of different application durations of ER:YAG laser on intrapulpal temperature change during debonding. Lasers Med Sci. 2011;26(6):735-740. doi:10.1007/s10103-010- 0796-7

Mundethu AR, Gutknecht N, Franzen R. Rapid debonding of polycrystalline ceramic orthodontic brackets with an Er:YAG laser: an in vitro study. Lasers Med Sci. 2014;29(5):1551-1556. doi:10.1007/s10103-013-1274-9

Oztoprak MO, Nalbantgil D, Erdem AS, Tozlu M, Arun T. Debonding of ceramic brackets by a new scanning laser method. Am J Orthod Dentofacial Orthop. 2010;138(2):195- 200. doi:10.1016/j.ajodo.2009.06.024

Nalbantgil D, Tozlu M, Oztoprak MO. Pulpal thermal changes following Er-YAG laser debonding of ceramic brackets. Sci World J. 2014;2014:912429. doi:10.1155/2014/912429

Iseri U, Oztoprak MO, Ozkurt Z, Kazazoglu E, Arun T. Effect of Er:YAG laser on debonding strength of laminate veneers. Eur J Dent. 2014;8(1):58-62. doi:10.4103/1305- 7456.126243

Oztoprak MO, Tozlu M, Iseri U, Ulkur F, Arun T. Effects of different application durations of scanning laser method on debonding strength of laminate veneers. Lasers Med Sci. 2012;27(4):713-716. doi:10.1007/s10103-011-0959-1

Rechmann P, Buu NC, Rechmann BM, Finzen FC. Laser all-ceramic crown removal and pulpal temperature-

-a laboratory proof-of-principle study. Lasers Med Sci.

;30(8):2087-2093. doi:10.1007/s10103-015-1738-1

Hibst R, Keller U. Mechanism of Er:YAG laser-induced ablation of dental hard substances. Paper presented at: Lasers in Orthopedic, Dental, and Veterinary Medicine II; 1993. doi:10.1117/12.148318

Mirhashemi A, Chiniforush N, Jadidi H, Sharifi

N. Comparative study of the effect of Er:YAG and Er:Cr;YSGG lasers on porcelain: etching for the bonding of orthodontic brackets. Lasers Med Sci. 2018;33(9):1997- 2005. doi:10.1007/s10103-018-2573-y

Rechmann P, Buu NC, Rechmann BM, Le CQ, Finzen FC, Featherstone JD. Laser all-ceramic crown removal-a laboratory proof-of-principle study-phase 1 material characteristics. Lasers Surg Med. 2014;46(8):628-635. doi:10.1002/lsm.22279

Ekworapoj P, Sidhu SK, McCabe JF. Effect of different power parameters of Er,Cr:YSGG laser on human dentine. Lasers Med Sci. 2007;22(3):175-182. doi:10.1007/s10103- 006-0426-6

Corona SA, de Souza AE, Chinelatti MA, Borsatto MC, Pecora JD, Palma-Dibb RG. Effect of energy and pulse repetition rate

of Er: YAG laser on dentin ablation ability and morphological analysis of the laser-irradiated substrate. Photomed Laser Surg. 2007;25(1):26-33. doi:10.1089/pho.2006.1075

Corona SA, Souza-Gabriel AE, Chinelatti MA, Pecora JD, Borsatto MC, Palma-Dibb RG. Influence of energy and pulse repetition rate of Er:YAG laser on enamel ablation ability and morphological analysis of the laser-irradiated surface. J Biomed Mater Res A. 2008;84(3):569-575. doi:10.1002/jbm.a.31335

Raucci-Neto W, Chinelatti MA, Palma-Dibb RG. Ablation rate and morphology of superficial and deep dentin irradiated with different Er:YAG laser energy levels. Photomed Laser Surg. 2008;26(6):523-529. doi:10.1089/ pho.2007.2201

Van Noort R, Barbour ME. Introduction to dental materials. 4th ed. Elsevier Health Sciences; 2013.

Sari T, Tuncel I, Usumez A, Gutknecht N. Transmission of Er:YAG laser through different dental ceramics. Photomed Laser Surg. 2014;32(1):37-41. doi:10.1089/pho.2013.3611

Han X, Liu X, Bai D, Meng Y, Huang L. Nd:YAG Laser- aided ceramic brackets debonding: Effects on shear bond strength and

enamel surface. Appl Surf Sci. 2008;255(2):613-615. doi:10.1016/j.apsusc.2008.06.082

Tocchio RM, Williams PT, Mayer FJ, Standing KG. Laser debonding of ceramic orthodontic brackets. Am J Orthod Dentofacial Orthop. 1993;103(2):155-162. doi:10.1016/ s0889-5406(05)81765-2

Morford CK, Buu NC, Rechmann BM, Finzen FC, Sharma AB, Rechmann P. Er:YAG laser debonding of porcelain veneers. Lasers Surg Med. 2011;43(10):965-974. doi:10.1002/lsm.21144

Tak O, Sari T, Arslan Malkoc M, Altintas S, Usumez A, Gutknecht N. The effect of transmitted Er:YAG laser energy through a dental ceramic on different types of resin cements. Lasers Surg Med. 2015;47(7):602-607. doi:10.1002/lsm.22394




DOI: https://doi.org/10.22037/jlms.v10i3.20542