377) The changes in Ca, P, Mg, Ca, and K levels and the Ca/P ratio after laser irradiations were minimal and statistically not significant (p > 0.05). |
PMID:24037037 DOI:10.1007/s10103-013-1438-7 |
2015 Lasers in medical science |
* Effect of Er:YAG and Nd:YAG lasers on the mineral content of root canal dentin. |
- The aim of this study was to assess the effect of two different laser systems on the mineral content of root canal dentin. Thirty-six single canal-extracted mandibular premolars were used in this study. The teeth were randomly divided into two groups of 18 teeth each and prepared with a master apical file #50. Dentin chips were obtained by Gates-Glidden burs and saved in Eppendorf tubes to serve as a control. Then, root canals were treated with a erbium:yttrium-aluminum-garnet or neodymium:yttrium-aluminum-garnet laser. Dentin chips were again obtained using Gates-Glidden. The levels of calcium (Ca), phosphorus (P), magnesium (Mg), sodium (Na), and potassium (K) in each specimen were measured by inductively coupled plasma-atomic emission spectrometry. Data were statistically analyzed by a Mann-Whitney U test. The changes in Ca, P, Mg, Ca, and K levels and the Ca/P ratio after laser irradiations were minimal and statistically not significant (p > 0.05). It was determined that the laser systems used in this study did not affect the mineral content of root canal dentin. |
(1)67 differences | (15)5 correlations | (29)3 influence | (44)2 dose-dependent |
(2)40 increase | (16)5 effects | (30)3 negative | (45)2 elevation |
(3)36 difference | (17)5 for | (31)3 number | (46)2 evidence |
(4)28 decrease | (18)5 increases | (32)3 roles | (47)2 factors |
(5)12 reduction | (19)5 risk | (33)2 (P | (48)2 group |
(6)11 predictors | (20)4 effect | (35)2 alterations | (49)2 inhibition |
(7)10 association | (21)4 in | (36)2 and | (50)2 interaction |
(8)9 improvement | (22)4 reductions | (37)2 at | (51)2 morbidity |
(9)8 *null* | (23)4 relationship | (38)2 between-group | (52)2 positive |
(10)7 changes | (24)3 (p | (39)2 blood | (53)2 prediction |
(11)7 predictor | (25)3 alteration | (40)2 challenge | (54)2 proportion |
(12)7 role | (26)3 as | (41)2 contribution | (55)2 source |
(13)6 correlation | (27)3 higher | (42)2 cytotoxic | (56)2 time |
(14)5 associations | (28)3 improvements | (43)2 decreases |
add keyword