Surface topography of enamel and dentine from primary teeth following infrared Nd-YAG laser irradiation: An in vitro study

1997 ◽  
Vol 12 (1) ◽  
pp. 61-67 ◽  
Author(s):  
L. A. Jalil ◽  
R. Labella ◽  
G. J. Pearson
Keyword(s):  
Surface Topography ◽  
Laser Irradiation ◽  
Primary Teeth ◽  
In Vitro Study ◽  
Vitro Study ◽  
Yag Laser

MARGINAL LEAKAGE EVALUATION OF GIOMER AND COMPOMER IN PRIMARY TEETH (IN-VITRO STUDY)

2016 ◽  
Vol 41 (2) ◽  
pp. 188-193 ◽  
Author(s):  
Eldesouky Heba I. ◽  
Hanno Azza G. ◽  
Bakry Niveen S. ◽  
Ahmed Dawlat M.
Keyword(s):  
Primary Teeth ◽  
In Vitro Study ◽  
Vitro Study

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.

Observations on fluid flow from exposed dentine in primary teeth: An in vitro study

2017 ◽  
Vol 83 ◽  
pp. 312-316 ◽  
Author(s):  
Monticha Rangcharoen ◽  
Varisara Sirimaharaj ◽  
Sitthichai Wanachantararak ◽  
Noppakun Vongsavan ◽  
Bruce Matthews
Keyword(s):  
Fluid Flow ◽  
Primary Teeth ◽  
In Vitro Study ◽  
Vitro Study

scholarly journals A Comparative Evaluation of the Efficacy of Etching by the Total Etch and Self-etch Dentin Bonding Systems in the Primary Teeth: An in vitro Study

2015 ◽  
Vol 8 (1) ◽  
pp. 30-36 ◽  
Author(s):  
Manohar Poojari ◽  
Vishwas Chaugule ◽  
Sajjad Hasim Mithiborwala ◽  
Prashant Pujari ◽  
Thejokrishna Pammi
Keyword(s):  
Comparative Evaluation ◽  
Primary Teeth ◽  
In Vitro Study ◽  
Vitro Study ◽  
Dentin Bonding ◽  
Bonding Systems ◽  
Self Etch
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