000009423 001__ 9423
000009423 005__ 20240111104902.0
000009423 0247_ $$2DOI$$a10.6083/M4P26W50
000009423 037__ $$aETD
000009423 245__ $$aPossible pathologic changes associated with bleaching tetracycline stained vital teeth
000009423 260__ $$bOregon Health and Science University
000009423 269__ $$a1972-06-01
000009423 336__ $$aThesis
000009423 520__ $$aThe purpose of this study was to determine possible pathologic changes that might result from bleaching vital tetracycline stained teeth. Temperatures inside the pulps of three dog teeth were shown to respond to external applications of heat, hydrogen peroxide, and a combination of both. An initial temperature was recorded inside the pulps and temperature rises were noted in response to all of the conditions when applied to the buccal enamel surfaces of the teeth. Hydrogen peroxide was applied at three concentrations and shown to be more effective in raising pulpal temperatures at the higher concentrations. When heat and hydrogen peroxide were applied together, pulpal temperatures were noted to stabilize at four centigrade degrees below the enamel surface temperatures. Fourteen additional teeth, four from the same dog and ten from a second, were exposed to a bleaching procedure that involved application of hydrogen peroxide heated to about forty-one centigrade degrees for one-half hour at one week intervals for four consecutive weeks. Histologic sections of these teeth removed one week following the final bleaching were not suitable for study due to fixation artifact.
000009423 650__ $$aTetracyclines$$026872
000009423 650__ $$aTooth Bleaching$$027173
000009423 650__ $$aHydrogen Peroxide$$020432
000009423 7001_ $$aSmith, Robert R.
000009423 8564_ $$91d0b6605-ac53-4c5b-b183-862ac81be17f$$s2073015$$uhttps://digitalcollections.ohsu.edu/record/9423/files/1972.smith.robert.pdf
000009423 905__ $$a/rest/prod/tb/09/j6/44/tb09j644t
000009423 909CO $$ooai:digitalcollections.ohsu.edu:9423$$pstudent-work
000009423 980__ $$aTheses and Dissertations