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IRCT20190106042255N1 IRCT 2019-03-03 Hamedan University of Medical Sciences Compariative evaluation of effect of chemical and Er,Cr:YSGG –assisted laser- bleaching on increasing of dentin sensitivity Compariative evaluation of effect of chemical and Er,Cr:YSGG –assisted laser- bleaching on increasing of dentin sensitivity 2019-02-20 anticipated 5 Complete https://irct.ir/trial/36762 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Treatment. N/A tooth bleaching. Intervention 1: Intervention group: chemical bleaching. Intervention 2: Intervention group: Er,Cr:YSGG –assisted laser- bleaching. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is تصمیم بستگی به نتایج نهایی حاصل از مطالعه دارد
public Maryam Poulaki
No 8, West Azad Ave
Hamedan Iran (Islamic Republic of) 6516843814 +98 81 3831 6830 poulaki.mp7@gmail.com Hamedan University of Medical Sciences scientific Zahra Khamverdi
Shahid Fahmideh Ave
Hamedan Iran (Islamic Republic of) 6517838677 +98 918 312 2095 khamverdi@umsha.ac.ir Hamedan University of Medical Sciences Iran (Islamic Republic of) Having 12 anterior teeth without filling and caries in upper and lower jaw Having 18 years old at least Having no tooth sensitivity No usege of antisensitivity productions at least 6 weeks befor treatment No usege of analgesics 72 hours befor treatment having good general and oral health 18 years no limit Both Women in pregnancy and nursing Severe internal discolouration (Tetracycline stain,Felorosis,pulpless teeth) Having history of tooth whitening and antisensitivity treatment Having tooth sensitivity Having poor general and oral health Smoking Having periodontal disease or undertreatment Having parafunctional habits like bruxism Usage of orthodontics appliance Treatment - Devices Treatment - Devices Intervention group: chemical bleaching Intervention group: Er,Cr:YSGG –assisted laser- bleaching Dentin sensitivity. Timepoint: befor treatment, immediately after, 24 hours after , 1 week after and 1 month after treatment. Method of measurement: VAS analyse chart. Hamedan University of Medical Sciences Approved 2018-12-21 Ethics committee of Hamedan University of Medical Sciences Shahid Fahmideh Ave همدان Hamadan Iran (Islamic Republic of)