Er:YAG laser irradiation of human dentin: Raman study of collagen

2004 ◽  
Author(s):  
Luis E. S. Soares ◽  
Airton A. Martin ◽  
Aldo Brugnera, Jr. ◽  
Fatima Zanin ◽  
Emilia A. Arisawa ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Er:Yag Laser ◽  
Human Dentin ◽  
Raman Study

Raman study of human dentin irradiated with Er:YAG laser

2004 ◽  
Author(s):  
Luis E. S. Soares ◽  
Airton A. Martin ◽  
Aldo Brugnera, Jr. ◽  
Fatima A. Zanin ◽  
Emilia A. Arisawa ◽  
...  
Keyword(s):  
Er:Yag Laser ◽  
Human Dentin ◽  
Raman Study

scholarly journals Relationship between the chemical and morphological characteristics of human dentin after Er:YAG laser irradiation

2013 ◽  
Vol 18 (6) ◽  
pp. 068001 ◽  
Author(s):  
Luís Eduardo Silva Soares ◽  
Ovídio César Lavesa Martin ◽  
Lilian Tan Moriyama ◽  
Cristina Kurachi ◽  
Airton Abrahão Martin
Keyword(s):  
Laser Irradiation ◽  
Er:Yag Laser ◽  
Morphological Characteristics ◽  
Human Dentin

Effects of Er:YAG laser irradiation and manipulation treatments on dentin components, part 1: Fourier transform-Raman study

2009 ◽  
Vol 14 (2) ◽  
pp. 024001 ◽  
Author(s):  
Luís Eduardo Silva Soares ◽  
Ana Maria do Espírito Santo ◽  
Aldo Brugnera Junior ◽  
Fátima Anto^nia Aparecida Zanin ◽  
Carolina da Silva Carvalho ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Laser Irradiation ◽  
Er:Yag Laser ◽  
Raman Study ◽  
Fourier Transform Raman

Effects of the Er:YAG Laser Irradiation on Titanium Implant Materials and Contaminated Implant Abutment Surfaces

2003 ◽  
Vol 21 (1) ◽  
pp. 7-17 ◽  
Author(s):  
Tomoko Matsuyama ◽  
Akira Aoki ◽  
Shigeru Oda ◽  
Takayuki Yoneyama ◽  
Isao Ishikawa
Keyword(s):  
Laser Irradiation ◽  
Er:Yag Laser ◽  
Titanium Implant ◽  
Implant Materials ◽  
Implant Abutment

Surface temperature during cavity preparation on human tooth by Er:YAG laser irradiation

CIRP Annals ◽  
2011 ◽  
Vol 60 (1) ◽  
pp. 555-558 ◽  
Author(s):  
T. Furumoto ◽  
T. Ueda ◽  
A. Kasai ◽  
A. Hosokawa
Keyword(s):  
Surface Temperature ◽  
Laser Irradiation ◽  
Er:Yag Laser ◽  
Human Tooth ◽  
Cavity Preparation

scholarly journals Er:YAG laser-induced damage to a dental composite in simulated clinical scenarios for inadvertent irradiation: an in vitro study

2021 ◽  
Author(s):  
Katharina Kuhn ◽  
Carmen U. Schmid ◽  
Ralph G. Luthardt ◽  
Heike Rudolph ◽  
Rolf Diebolder
Keyword(s):  
Laser Irradiation ◽  
Laser Fluence ◽  
Ablation Threshold ◽  
Er:Yag Laser ◽  
In Vitro Study ◽  
Vitro Study ◽  
Crater Diameter ◽  
Clinical Scenarios ◽  
Laser Induced Damage

AbstractInadvertent Er:YAG laser irradiation occurs in dentistry and may harm restorative materials in teeth. The aim of this in vitro study was to quantify Er:YAG laser-induced damage to a nanohybrid composite in simulated clinical scenarios for inadvertent direct and indirect (reflection) laser irradiation. The simulation was performed by varying the output energy (OE;direct˃indirect) reaching the specimen and the operating distance (OD;direct˂indirect). Composite specimens were irradiated by an Er:YAG laser. The ablation threshold was determined and clinically relevant parameters were applied (n = 6 for each OE/OD combination) for direct (OE: 570 mJ/OD: 10 mm, OE: 190 mJ/OD: 10 mm) and indirect irradiation (OE: 466 mJ/OD: 15 mm, OE: 57 mJ/OD: 15 mm, OE: 155 mJ/OD: 15 mm, OE: 19 mJ/OD: 15 mm). The extent of damage in the form of craters was evaluated using a laser scanning microscope (LSM) and a conventional light microscope (LM). The ablation threshold was determined to be 2.6 J/cm2. The crater diameter showed the highest value (LM: 1075 ± 18 µm/LSM: 1082 ± 17 µm) for indirect irradiation (reflectant:dental mirror) (OE: 466 mJ/OD: 15 mm). The crater depth showed the highest and comparable value for direct (OE: 570 mJ/OD: 10 mm; LSM: 89 ± 2 µm) and indirect irradiation (OE: 466 mJ/OD: 15 mm; LSM: 90 ± 4 µm). For each OD, the crater diameter, depth, and volume increased with higher laser fluence. However, the OD—and thus the laser spot diameter—also had an enlarging effect. Thus, indirect irradiation (reflectant:dental mirror) with only 47% of the laser fluence of direct irradiation led to a larger diameter and a comparable depth. The three-dimensional extent of the crater was large enough to cause roughening, which may lead to plaque accumulation and encourage caries, gingivitis, and periodontitis under clinical conditions. Clinicians should be aware that reflected irradiation can still create such craters.

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