{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,19]],"date-time":"2025-08-19T10:51:06Z","timestamp":1755600666457,"version":"3.40.5"},"reference-count":34,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2022,5,2]],"date-time":"2022-05-02T00:00:00Z","timestamp":1651449600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J Paed Dentistry"],"published-print":{"date-parts":[[2022,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Prefabricated fibreglass crowns (PFCs) require less tooth structure reduction than prefabricated zirconium crowns (PZCs) for restoring primary molars. Little is known, however, about their mechanical properties.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aim<\/jats:title><jats:p>To investigate the fatigue survival and fracture resistance of PZCs and PFCs cemented with two different types of luting cement [glass\u2010ionomer cement (GIC) and resin\u2010modified GIC (RMGIC)].<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>One hundred and twenty extracted human primary molars were randomly divided into subgroups (<jats:italic>n<\/jats:italic>\u00a0=\u00a015) according to the crown type (PFCs\/PZCs), the luting cement (GIC\/RMGIC) and crowns subjected to the chewing simulation test with thermocycling mechanical loading (CSTTML). The surfaces of the teeth were reduced by approximately 2\u00a0mm in the PZC group and 1\u00a0mm in the PFC group. All the samples were subjected to fracture tests.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>None of the samples subjected to CSTTML exhibited signs of surface damage, fracture or premature debonding. The forces required to fracture PFCs were higher than those required for PZCs in all groups (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.001). The highest mean fracture resistance values were obtained from the group of PFCs cemented with GIC that were subjected to the CSTTML (2515.8\u00a0N\u00a0\u00b1\u00a0619.2\u00a0N).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>PFCs presented high fatigue survival and could be used as alternatives to PZCs as they require less tooth structure reduction. Crowns cemented with GIC had a similar fracture resistance value when compared with RMGIC.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ipd.12954","type":"journal-article","created":{"date-parts":[[2022,2,1]],"date-time":"2022-02-01T04:34:18Z","timestamp":1643690058000},"page":"756-763","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Comparative evaluation of the fracture resistance of newly developed prefabricated fibreglass crowns and zirconium crowns"],"prefix":"10.1111","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1888-6634","authenticated-orcid":false,"given":"Z\u00fclfikar Zahit","family":"\u00c7ift\u00e7i","sequence":"first","affiliation":[{"name":"Department of Paediatric Dentistry Faculty of Dentistry Akdeniz University  Antalya 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