| dc.contributor | Universidade Estadual Paulista (UNESP) | |
| dc.creator | da Costa, J. B. | |
| dc.creator | Pelogia, F. | |
| dc.creator | Hagedorn, B. | |
| dc.creator | Ferracane, J. L. | |
| dc.date | 2014-05-20T15:32:45Z | |
| dc.date | 2016-10-25T18:09:07Z | |
| dc.date | 2014-05-20T15:32:45Z | |
| dc.date | 2016-10-25T18:09:07Z | |
| dc.date | 2010-05-01 | |
| dc.date.accessioned | 2017-04-06T00:29:29Z | |
| dc.date.available | 2017-04-06T00:29:29Z | |
| dc.identifier | Operative Dentistry. Indianapolis: Operative Dentistry Inc, v. 35, n. 3, p. 324-329, 2010. | |
| dc.identifier | 0361-7734 | |
| dc.identifier | http://hdl.handle.net/11449/41583 | |
| dc.identifier | http://acervodigital.unesp.br/handle/11449/41583 | |
| dc.identifier | 10.2341/09-178-L | |
| dc.identifier | WOS:000277877000010 | |
| dc.identifier | http://dx.doi.org/10.2341/09-178-L | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/884276 | |
| dc.description | Objectives: This study evaluated the marginal gaps on several surfaces of onlays created with the Cerec 3D system using one intraoral and two extraoral optical impression methods. Methods: A human molar (#19) was mounted with its adjacent teeth on a typodont (Frasaco) and prepared for a MODL onlay. The typodont was assembled in the mannequin head in order to simulate clinical conditions. The same operator took 36 individual optical impressions using a CEREC 3D camera. For group 1 (IP), a thin layer of titanium dioxide powder (CEREC powder-VITA) was applied directly onto the surface of the preparation for imaging (n=12). For group 2 (EP), a sectional impression was taken with hydrocolloid Identic Syringable (Dux Dental), a die made with polyvinylsiloxane KwikkModel Scan (R-dental Dentalerzeugnisse GmbH) and powdered with titanium dioxide for imaging (n=12). For group 3 (ES), a sectional impression was taken with PVS and a sectional stock tray, a die fabricated in stone (Diamond die- HI-TEC Dental Products) and the die being imaged without powdering (n=12). One operator designed and machined the onlays in Vita Blocks Mark II for Cerec (VITA) using a CEREC 3D. The marginal gaps (pm) were measured with an optical microscope (50x) at 12 points, three on each surface of the MODL. The results were analyzed by two-way ANOVA/Tukey's (p=0.05). Results: The overall mean marginal gaps (mu m) for the three methods were: IP=111.6 (+/- 34.0); EP=161.4 (+/- 37.6) and ES=116.8 (+/- 42.3). IP and ES were equal, but both were significantly less than EP. The pooled mean marginal gaps (mu m) for the occlusal = 110.5 (+/- 39) and lingual = 111.5 (+/- 30.5) surfaces were equivalent and significantly less than the distal = 136.5 (+/- 42.5) and mesial = 161.1 (+/- 43.3). Conclusion: The marginal gap of CEREC 3D onlay restorations was not different when the optical impression was taken intraorally vs extraorally using a stone cast that does not require powdering. The lingual and occlusal surfaces showed the lowest gaps. | |
| dc.language | eng | |
| dc.publisher | Operative Dentistry Inc | |
| dc.relation | Operative Dentistry | |
| dc.rights | info:eu-repo/semantics/closedAccess | |
| dc.title | Evaluation of Different Methods of Optical Impression Making on the Marginal Gap of Onlays Created with CEREC 3D | |
| dc.type | Otro | |
