Document Details

Document Type : Article In Journal 
Document Title :
THE EFFECT OF IN-OFFICE BLEACHING SYSTEM ZOOM 2 ON THE INORGANIC CONTENTS OF ENAMEL AND DENTIN
THE EFFECT OF IN-OFFICE BLEACHING SYSTEM ZOOM 2 ON THE INORGANIC CONTENTS OF ENAMEL AND DENTIN
 
Document Language : English 
Abstract : 1lI I'fi ufZoom 2In·om· hlc hlna. ySlcm with its post-bleach Relief ACP treatment n II Ino "I 0111 III of h totllh tNCture Wll cxamined. Tcn cxtraeted intact human mllJdllllJ'y cnll'll/Incl) W I'C '(III cd.1M CrowN wcre plil lubiopalatally into two halves. One hall' or ench tooth Wll.\u d In the tud)'. '11lC cxpo d dcmin or Ihc tcn specimens was complctcly covered by opal dllm to protcct II (rom comln in contact with both blcach gel and Zoom light. Extra-coronal blenching Wll. done by applying 1·2 mm thick laycr of Zoom 2 whitcning gel containing 25% HP on the exposed enamel surrace using a provided brush after being warme~to room tcmperature. The blcaching gcl was then subjcctcd to Zoom 2 activation Jig,ht for a 15 minutes session repeated 4 times. The residual gel was removed and reapplied between the sessions. After final removal of the bleaching gel, the enamel surface was treated with the post bleach Relief ACP supplied with the Zoom 2 system for 30 minutes. Elemental composition values of Ca and P contents of enamel (E), central dentin (CD) and pulpal dentin (PO) was done using EOAX pattern. Measurements were done at fixed points in the 3 levels, pre-bleach, post-bleach and after Relief ACP treatment. Results showed a significant decrease in me~ Ca/P ratio in E, CO and PO after bleaching. These values were significantly increased after Relief ACP gel treatment to a level almost equivalent to the base-line measurements, as there was no significant difference between mean Ca/P ratio after re-mineralization when compared to pre-bleaching values in the 3 levels. Comparing the mean % changes in CaIP ratio between E, CO and PO after bleaching, showed no statistically significant difference between E and PO that presented the highest mean % decrease in CaIP ratio compared to CO that presented the lowest mean % decrease. There was no significant difference between mean % increase in CafP ratio between E, CD and PO after re-mineralization with Relief ACP gel. These results ensured safe effect of Zoom 2 bleaching system on mineral content of enamel and dentin with its provided post treatment Relief ACP gel th31tcompensates for the mineral loss resulting from the bleaching procedure. 
ISSN : 0070-9484 
Journal Name : EGYPTIAN DENTAL JOURNAL 
Volume : 55 
Issue Number : 1 
Publishing Year : 2009 AH
2009 AD 
Article Type : Article 
Added Date : Sunday, February 7, 2010 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
لبنى الشافعيshafie, Lubna ResearcherDoctorate 

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