TY - JOUR
T1 - In vitro study of dentin hypersensitivity treated with Nd
T2 - YAG laser
AU - Li, Xue Ying
AU - Lin, Min
AU - Cong, Cong
AU - Teng, Rui
AU - Li, Xiao Hong
AU - Niu, Lin
N1 - Publisher Copyright:
©, 2015, Xi'an Medical University. All right reserved.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - Objective: To observe the structural changes of dentin irradiated with Nd: YAG laser under different parameters and the changes of calcium-phosphorus ration, and evaluate the optimal parameters of Nd: YAG laser in treating dentin hypersensitivity (DH). Methods: The model of dentin hypersensitivity was established by acid etching method. Samples were irradiated with Nd: YAG laser under different parameters. The morphological alterations of the dentin surfaces and Ca-P ratio were examined with scanning electron microscopy (SEM) combined with energy dispersive X-ray microanalysis. Results: Compared with those in the control group, dentinal tubules could be blocked partially or totally with no cracks in A-C (30 mj, 5 Hz), (30 mj, 10 Hz) and (50 mj, 5 Hz) groups. Dentinal tubules could be entirely blocked but with cracks in D (50 mj, 10 Hz) and E (80 mj, 5 Hz) groups. Dentin was carbonized in F (80 mj, 10 Hz) group. Compared with that in the control group, Ca-P ratio was decreased significantly (P<0.05). Conclusion: The suitable energy parameter of Nd: YAG laser in treating dentin hypersensitivity is (30 mj, 10 Hz) and (50 mj, 5 Hz).
AB - Objective: To observe the structural changes of dentin irradiated with Nd: YAG laser under different parameters and the changes of calcium-phosphorus ration, and evaluate the optimal parameters of Nd: YAG laser in treating dentin hypersensitivity (DH). Methods: The model of dentin hypersensitivity was established by acid etching method. Samples were irradiated with Nd: YAG laser under different parameters. The morphological alterations of the dentin surfaces and Ca-P ratio were examined with scanning electron microscopy (SEM) combined with energy dispersive X-ray microanalysis. Results: Compared with those in the control group, dentinal tubules could be blocked partially or totally with no cracks in A-C (30 mj, 5 Hz), (30 mj, 10 Hz) and (50 mj, 5 Hz) groups. Dentinal tubules could be entirely blocked but with cracks in D (50 mj, 10 Hz) and E (80 mj, 5 Hz) groups. Dentin was carbonized in F (80 mj, 10 Hz) group. Compared with that in the control group, Ca-P ratio was decreased significantly (P<0.05). Conclusion: The suitable energy parameter of Nd: YAG laser in treating dentin hypersensitivity is (30 mj, 10 Hz) and (50 mj, 5 Hz).
KW - Ca-P ratio
KW - Dentin sensitivity
KW - Dentin tubule
KW - Nd: YAG laser
KW - Scanning electron microscopy (SEM)
UR - https://www.scopus.com/pages/publications/84927752565
U2 - 10.7652/jdyxb201502025
DO - 10.7652/jdyxb201502025
M3 - 文章
AN - SCOPUS:84927752565
SN - 1671-8259
VL - 36
SP - 275
EP - 279
JO - Journal of Xi'an Jiaotong University (Medical Sciences)
JF - Journal of Xi'an Jiaotong University (Medical Sciences)
IS - 2
ER -