Enamel and dentin irradiation with 9.6 μm CO2 and 2.94 μm Er:YAG lasers:: bond strength evaluation

被引：28

作者：

Marraccini, TM

Bachmann, L

Wigdor, HA

Walsh, JT

Turbino, ML

Stabholtz, A

Zezell, DM

机构：

[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Pret, Dept Fis & Matemat, BR-14040901 Ribeirao Preto, SP, Brazil

[2] Inst Pesquisas EZnerget & Nucl, Ctr Lasers & Aplicacoes, BR-05508900 Sao Paulo, Brazil

[3] Illinois Masonic Med Ctr, Dept Dent, Chicago, IL 60657 USA

[4] Northwestern Univ, Dept Biomed Engn, Evanston, IL 60208 USA

[5] Univ Sao Paulo, Fac Odontol, Dept Dent, BR-05508900 Sao Paulo, Brazil

[6] Hebrew Univ Jerusalem, Hadassah Sch Dent Med, Dept Endodont, IL-91120 Jerusalem, Israel

来源：

LASER PHYSICS LETTERS | 2006年 / 3卷 / 02期

关键词：

adhesion; carbon dioxide laser; erbium laser; morphology; SEM; tensile strength; composite resin;

D O I：

10.1002/lapl.200510058

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Background and objective: The objective of this study was to evaluate the bond strength between a composite resin and dental hard tissues, which have been previously irradiated with an Er:YAG (2.94 mu m) or CO2 (9.6 mu m) laser. Materials and methods: A total of 156 bovine teeth were divided into 6 groups: Group 1 - Enamel control: acid etched enamel (Single Bond); Group 2 - Dentin control: acid etched dentin (Single-Bond); Group 3 - Irradiated enamel (CO2 laser - 3 W) followed by acid etching; Group 4 - Irradiated dentin (CO2 laser - 3 W) followed by acid etching; Group 5 - Irradiated enamel (Er:YAG laser - 0.16 W) followed by acid etching; Group 6 - Irradiated dentin (Er:YAG laser - 0.16 W) followed by acid etching. Results: Treatment only with acid etching and also the Er:YAG laser irradiation followed by acid etching showed the highest bond strength value while the CO2 laser irradiation followed by acid etching treatment produces the lowest bond strength values in both tissues. Conclusion: Acid etching of non-irradiated and Erbium YAG laser irradiated tissues produces better adhesion then acid etching of CO2 laser irradated surfaces.

引用

页码：96 / 101

页数：6

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