{"_buckets": {"deposit": "cbd9bb6b-a180-47be-9a82-0440bf063632"}, "_deposit": {"created_by": 130, "id": "7032", "owner": "130", "owners": [130], "owners_ext": {"displayname": "", "username": ""}, "pid": {"revision_id": 0, "type": "depid", "value": "7032"}, "status": "published"}, "_oai": {"id": "oai:meral.edu.mm:recid/00007032", "sets": ["user-udmy"]}, "communities": ["udmy"], "item_1583103067471": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "Simulated Toothbrushing Wear of Different Composite Resin Restorative Materials", "subitem_1551255648112": "en"}]}, "item_1583103085720": {"attribute_name": "Description", "attribute_value_mlt": [{"interim": "Abstract - This study evaluated surface roughness after simulated toothbrushing of five commercial composite resin restorative materials: one microhybrid: Denfil; one Ormocer: Admira; two nanohybrids: Grandio and Ceram X mono; and one Giomer: Beautifil II. Cylindrical specimens of five composite resin (n=12 for each material) were used. All samples were brushed for 200 min with dentifricewater slurry in a simulated toothbrushing machine. This period is clinically equal to two years age of toothbrushing. Before and after simulated toothbrushing wear parameters for surface roughness (Ra, µm) were determined by a surface profilometer respectively. The data was statistically analyzed by one way analysis of variance (ANOVA) and Tukey’s post hoc test to evaluate the difference among the tested materials and Paired Sample T test to evaluate the surface roughness changes after simulated toothbrushing. And then, comparing the surface roughness among the tested materials: Denfil, Admira, Grandio, Ceram X mono and Beautiful II. SEM observation was doneto evaluate the changes in surface topography of all tested composite resin materials before and after simulated toothbrushing. The mean percentages for surface roughness, initial surface roughness means ranged from 0.2081 (0.0672), 0.1571 (0.0294), 0.1977 (0.0642), 0.1977 (0.0679), and 0.1822 (0.0641) for Denfil, Admira, Grandio, CeramX mono, and Beautifil II respectively to 0.3072 (0.0957), 0.2331 (0.0489), 0.2315 (0.0705), 0.2252 (0.0880), and 0.1995 (0.0605) after testing. After simulated toothbrushing, statistically significant change in weight loss and surface roughness was detected in all tested materials (p\u003c0.01). The results of this study suggested that some important general relationships exist between the compositions, microstructures and mechanical properties of tested composite resins. The analysis of differences before and after the simulated toothbrushing may provide some further basis for a rational choice of the most appropriate composite resin\nmaterial from wearing aspect."}]}, "item_1583103108160": {"attribute_name": "Keywords", "attribute_value_mlt": [{"interim": "toothbrushing"}, {"interim": "surface roughness"}, {"interim": "composite resin"}]}, "item_1583103120197": {"attribute_name": "Files", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "date": [{"dateType": "Available", "dateValue": "2020-12-24"}], "displaytype": "preview", "download_preview_message": "", "file_order": 0, "filename": "01-Simulated_Toothbrushing_Wear_of_Different_Composite_Restorative_Materials_(Aung_Thein_Tun,_Myint_Myint_San,_Pwint_Hpoo)1.pdf", "filesize": [{"value": "751 KB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_0", "mimetype": "application/pdf", "size": 751000.0, "url": {"url": "https://meral.edu.mm/record/7032/files/01-Simulated_Toothbrushing_Wear_of_Different_Composite_Restorative_Materials_(Aung_Thein_Tun,_Myint_Myint_San,_Pwint_Hpoo)1.pdf"}, "version_id": "4409c275-4d64-4ba4-af32-0a54132abc5a"}]}, "item_1583103131163": {"attribute_name": "Journal articles", "attribute_value_mlt": [{"subitem_issue": "Vol.1", "subitem_journal_title": "Journal of Dental Science-UDMY", "subitem_pages": "1-10", "subitem_volume": "No.1,"}]}, "item_1583105942107": {"attribute_name": "Authors", "attribute_value_mlt": [{"subitem_authors": [{"subitem_authors_fullname": "Aung Thein Tun"}, {"subitem_authors_fullname": "Myint Myint San,"}, {"subitem_authors_fullname": "Pwint Hpoo"}]}]}, "item_1583108359239": {"attribute_name": "Upload type", "attribute_value_mlt": [{"interim": "Publication"}]}, "item_1583108428133": {"attribute_name": "Publication type", "attribute_value_mlt": [{"interim": "Journal article"}]}, "item_1583159729339": {"attribute_name": "Publication date", "attribute_value": "2020-12-24"}, "item_1583159847033": {"attribute_name": "Identifier", "attribute_value": "http://udmyangon-edu.com"}, "item_title": "Simulated Toothbrushing Wear of Different Composite Resin Restorative Materials", "item_type_id": "21", "owner": "130", "path": ["1608059141131"], "permalink_uri": "http://hdl.handle.net/20.500.12678/0000007032", "pubdate": {"attribute_name": "Deposited date", "attribute_value": "2020-12-24"}, "publish_date": "2020-12-24", "publish_status": "0", "recid": "7032", "relation": {}, "relation_version_is_last": true, "title": ["Simulated Toothbrushing Wear of Different Composite Resin Restorative Materials"], "weko_shared_id": -1}