start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=2 article-no= start-page=295 end-page=301 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Toughening of Highly Translucent Zirconia by Monoclinic ZrO 2 and SiO 2 Particle Coating en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=UnoSoichiro en-aut-sei=Uno en-aut-mei=Soichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OkadaMasahiro en-aut-sei=Okada en-aut-mei=Masahiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TaketaHiroaki en-aut-sei=Taketa en-aut-mei=Hiroaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ToriiYasuhiro en-aut-sei=Torii en-aut-mei=Yasuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=MatsumotoTakuya en-aut-sei=Matsumoto en-aut-mei=Takuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=2 en-affil=Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=3 en-affil=Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=4 en-affil=Department of Comprehensive Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= affil-num=5 en-affil=Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University kn-affil= en-keyword=Highly translucent partially stabilized zirconia kn-keyword=Highly translucent partially stabilized zirconia en-keyword=Monoclinic phase kn-keyword=Monoclinic phase en-keyword=Biaxial flexural strength kn-keyword=Biaxial flexural strength en-keyword=Thermal treatment kn-keyword=Thermal treatment END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=385 article-no= start-page=798 end-page=805 dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190927 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=The Effect of Flowable Composite Lining and Dentin Location on Microtensile Bond Strength and Internal Fracture Formation en-subtitle= kn-subtitle= en-abstract= kn-abstract=The objective of this study was to determine the effect of flowable composite lining and dentin location on internal dentin fracture formation in the microtensile bond strength (MTBS) test using swept-source optical coherence tomography (SS-OCT). MTBS test beams (1.0~1.0 mm) were prepared from human superficial and deep dentin, which was bonded with a self-etch adhesive (Clearfil SE Bond) and hybrid composite resin (Clearfil AP-X), with or without flowable lining (Clearfil Majesty ES-Flow). We tested 4 groups according to placement technique (with vs. without flowable liner) and dentin (superficial vs. deep) locations. Cross-sectional 2D images of the bonded interface were obtained before and after the MTBS test. Internal dentin fracture after MTBT was observed as a bright zone in SS-OCT. Flowable lining significantly reduced internal fracture formation in dentin (p<0.05). Dentin location significantly influenced MTBS (p<0.05), and this was reduced by flowable lining usage. en-copyright= kn-copyright= en-aut-name=KominamiNao en-aut-sei=Kominami en-aut-mei=Nao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ShimadaYasushi en-aut-sei=Shimada en-aut-mei=Yasushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HosakaKeiichi en-aut-sei=Hosaka en-aut-mei=Keiichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=Minh Nguyet Luong en-aut-sei=Minh Nguyet Luong en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YoshiyamaMasahiro en-aut-sei=Yoshiyama en-aut-mei=Masahiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=SadrAlireza en-aut-sei=Sadr en-aut-mei=Alireza kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=SumiYasunori en-aut-sei=Sumi en-aut-mei=Yasunori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=TagamiJunji en-aut-sei=Tagami en-aut-mei=Junji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= affil-num=1 en-affil=Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University kn-affil= affil-num=2 en-affil=Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University. kn-affil= affil-num=3 en-affil=Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University kn-affil= affil-num=4 en-affil=Department of Restorative Dentistry and Endodontics, Faculty of Odonto-Stomatology, University of Medicine and Pharmacy at Ho Chi Minh City kn-affil= affil-num=5 en-affil=Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University. kn-affil= affil-num=6 en-affil=Biomimetics Biomaterials Biophotonics & Technology Laboratory, Department of Restorative Dentistry, University of Washington School of Dentistry kn-affil= affil-num=7 en-affil=National Center for Geriatrics and Gerontology, Department of Advanced Dental Research, Center of Advanced Medicine for Dental and Oral Disease kn-affil= affil-num=8 en-affil= kn-affil= en-keyword=Dentin kn-keyword=Dentin en-keyword=Internal fracture kn-keyword=Internal fracture en-keyword=Microtensile bond strength test kn-keyword=Microtensile bond strength test en-keyword= SS-OCT kn-keyword= SS-OCT END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=5 article-no= start-page=779 end-page=789 dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190927 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Cavity Adaptation of Composite Restorations Prepared at Crown and Root: Optical Assessment Using SS-OCT en-subtitle= kn-subtitle= en-abstract= kn-abstract= Evaluation of gap formation at the interfaces of a two-step self-etching adhesive with/without pre-etching was performed using sweptsource optical coherence tomography (SS-OCT). Round cavities were prepared in bovine incisors at the middle (MC) and cervical (CC) thirds of the crown and the cervical third of the root (CR). Clearfil SE bond was directly applied to one group (SE) and another (PA) was pretreated with K-etchant gel. Following restoration by flowable composite resin, the teeth were thermally challenged and stored for 2 months. Interfacial gaps observed in the cross-sectional OCT images were analyzed and the bottom cavities exhibited increased gaps compared to the margin and dentin-enamel junction (DEJ). The CR site had a larger gap than at MC and CC in the SE group. DEJ separation at the MC was significantly smaller than that at CC in both groups. Therefore, gap formation depends on the cavity region, location, and bonding protocol. en-copyright= kn-copyright= en-aut-name=Rima Zakzuk Alshahni en-aut-sei=Rima Zakzuk Alshahni en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ShimadaYasushi en-aut-sei=Shimada en-aut-mei=Yasushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ZhouYuan en-aut-sei=Zhou en-aut-mei=Yuan kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YoshiyamaMasahiro en-aut-sei=Yoshiyama en-aut-mei=Masahiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=SadrAlireza en-aut-sei=Sadr en-aut-mei=Alireza kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=SumiYasunori en-aut-sei=Sumi en-aut-mei=Yasunori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TagamiJunji en-aut-sei=Tagami en-aut-mei=Junji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil=Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University kn-affil= affil-num=2 en-affil=Department of Operative Dentistry, Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=3 en-affil=Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University kn-affil= affil-num=4 en-affil=Department of Operative Dentistry, Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=5 en-affil=Department of Restorative Dentistry, University of Washington, School of Dentistry kn-affil= affil-num=6 en-affil=Division of Oral and Dental Surgery, Department of Advanced Medicine, National Center for Geriatrics and Gerontology, National Hospital for Geriatric Medicine kn-affil= affil-num=7 en-affil=Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University kn-affil= en-keyword=Bottom kn-keyword=Bottom en-keyword=Dentin-enamel junction kn-keyword=Dentin-enamel junction en-keyword=Gap kn-keyword=Gap en-keyword=SS-OCT kn-keyword=SS-OCT en-keyword=Self-etch adhesive kn-keyword=Self-etch adhesive END