{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,5]],"date-time":"2026-06-05T21:08:10Z","timestamp":1780693690631,"version":"3.54.1"},"reference-count":0,"publisher":"Sociedad Argentina de Investigacion Odontologica","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acta Odontol Latinoam"],"abstract":"<jats:p>Glass ceramics are widely used to manufacture esthetic veneers, inlays, onlays, and crowns. Although the clinical survival rates of glass-ceramic restorations are favorable, fractures or chips are common. Certain cases can be repaired with direct composite. Aim: The aim of this study was to investigate the interaction effect of different designs and surface treatments on the load-to-failure of lithium disilicate glass-ceramic repaired with nanofilled composite. Materials and Method: Lithium-disilicate glass-ceramic slabs (IPS e.max Press, Ivoclar Vivadent) with three different designs of the top surface (flat, single plateau, or double plateau) (n=11) received \u2018no treatment\u2019, \u20185% HF etching\u2019, or \u201cAl2O3 sandblasting\u201d. HF-etched and sandblasted slabs also received silane and universal one-step adhesive application. All slabs were incrementally repaired with nanofilled composite (Filtek Z350, 3M ESPE) up to 6 mm above the highest ceramic top plateau. Specimens were stored in artificial saliva at 37 \u00b0C for 21 days and then subjected to 1,000 thermocycles between 5 and 55 \u00b0C. The interface composite-ceramic of each specimen was tensile tested until failure in a universal testing machine and the mode of failure was determined under a stereomicroscope. The ceramic surface morphology of one representative tested specimen from each subgroup (design\/surface treatment) was observed through scanning electron microscopy (SEM). Results: Regardless of ceramic design, the absence of surface treatment resulted in significantly lower load-to-failure values. No significant differences in load-to-failure values were observed between HF- etched and sandblasted specimens for the flat design; however, HF etching resulted in significantly higher load-to-failure values than sandblasting for both single plateau and double plateau designs. The majority (60%) of HF-etched specimens with single plateau or double plateau presented mixed failures. SEM photomicrographs showed that HF-etched specimens had smoother surfaces than sandblasted specimens. Conclusion: The surface treatment of a defective lithium disilicate glass-ceramic restoration has more influence than its macroscopic design on the retention of the composite repair. HF etching seems to provide higher bond strength to the composite repair.<\/jats:p>","DOI":"10.54589\/aol.37\/1\/88","type":"journal-article","created":{"date-parts":[[2024,6,27]],"date-time":"2024-06-27T02:56:16Z","timestamp":1719456976000},"page":"88-95","source":"Crossref","is-referenced-by-count":3,"title":["Effect of different design and surface treatment on the load-to- failure of ceramic repaired with composite"],"prefix":"10.54589","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8944-2283","authenticated-orcid":false,"given":"Mauricio","family":"JM Tavares","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8934-6678","authenticated-orcid":false,"given":"Flavia","family":"LB Amaral","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5345-5776","authenticated-orcid":false,"given":"Roberta","family":"T Basting","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0078-9895","authenticated-orcid":false,"given":"Cecilia","family":"P Turssi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2877-6797","authenticated-orcid":false,"given":"Fabiana","family":"MG Fran\u00e7a","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"31696","published-online":{"date-parts":[[2024,4,30]]},"container-title":["Acta Odontol\u00f3gica Latinoamericana"],"original-title":[],"deposited":{"date-parts":[[2024,6,27]],"date-time":"2024-06-27T02:56:36Z","timestamp":1719456996000},"score":1,"resource":{"primary":{"URL":"https:\/\/actaodontologicalat.com\/wp-content\/uploads\/2024\/06\/aol_2024_37_1_88.pdf"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,4,30]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2024,4,30]]}},"URL":"https:\/\/doi.org\/10.54589\/aol.37\/1\/88","relation":{},"ISSN":["1852-4834"],"issn-type":[{"value":"1852-4834","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,4,30]]}}}