{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T23:54:08Z","timestamp":1791590048672,"version":"4.3.4"},"reference-count":24,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2020,11,10]],"date-time":"2020-11-10T00:00:00Z","timestamp":1604966400000},"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":["J Esthet Restor Dent"],"published-print":{"date-parts":[[2021,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>CAD\u2010CAM has dramatically advanced dental restorative procedures to include implant\u2010supported crowns. The purpose of this study was to compare the fracture resistance following mechanical loading and thermocycling of various screw\u2010retained and cement\u2010retained ceramic and polymethylmethacrylate material combinations using the TiBase abutment compared to PFM implant\u2010supported crowns.<\/jats:p><\/jats:sec><jats:sec><jats:title>Overview<\/jats:title><jats:p>Twelve implant restorations were fabricated for each of eight groups. Three groups were screw\u2010retained and five groups were cement\u2010retained implant restorations. The ceramic and polymethylmethacrylate restorations were fabricated on the TiBase abutment while the PFM restorations were fabricated on an UCLA abutment. Data were analyzed with a one way Analysis of Variance and Tukey's post\u2010hoc test to evaluate the effect of abutment and crown type on fracture load (alpha = 0.05). A significant difference was found in the maximum fracture load between groups (<jats:italic>P<\/jats:italic> &lt; 0.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The screw\u2010retained implant restorations demonstrated higher fracture loads than their cement\u2010retained counterparts. The TiBase abutment compared favorably to the UCLA abutment.<\/jats:p><\/jats:sec><jats:sec><jats:title>Clinical Significance<\/jats:title><jats:p>The TiBase abutment is a titanium insert which combines the esthetics of a ceramic abutment with the mechanical properties of a titanium abutment and should be considered a viable clinical alternative to the conventional implant\u2010supported PFM crown based on theses in vitro results and in context of in vivo studies. The lithium disilicate hybrid abutment\/crown implant\u2010supported restoration utilizing the TiBase abutment may be an ideal clinical choice due to simplicity, single appointment CAD\u2010CAM, and esthetics.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jerd.12672","type":"journal-article","created":{"date-parts":[[2020,11,11]],"date-time":"2020-11-11T07:39:54Z","timestamp":1605080394000},"page":"522-530","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Fracture strength of various <scp>titanium\u2010based<\/scp>, <scp>CAD\u2010CAM<\/scp> and <scp>PFM<\/scp> implant crowns"],"prefix":"10.1111","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1434-2741","authenticated-orcid":false,"given":"Nicholas B.","family":"DuVall","sequence":"first","affiliation":[{"name":"Program Director AEGD Residency, 96th Dental Squadron, Eglin AFB  Florida USA"},{"name":"US Air Force Postgraduate Dental College Uniformed Services University of the Health Sciences  Bethesda Maryland USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen P.","family":"DeReis","sequence":"additional","affiliation":[{"name":"Certified Dental Technician 81st Dental Squadron, Keesler AFB  Mississippi USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kraig S.","family":"Vandewalle","sequence":"additional","affiliation":[{"name":"US Air Force Postgraduate Dental College Uniformed Services University of the Health Sciences  Bethesda Maryland USA"},{"name":"Director of Dental Research AEGD Residency, 59th Dental Training Squadron, Joint Base San Antonio\u2010Lackland  Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,11,10]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/cid.12377"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.prosdent.2018.08.005"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1563\/aaid-joi-D-17-00249"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/jerd.12031"},{"issue":"1","key":"e_1_2_7_6_1","first-page":"139","article-title":"Performance of CAD\/CAM monolithic ceramic implant\u2010supported restorations bonded to titanium inserts: a systematic review","volume":"10","author":"Conejo J","year":"2017","journal-title":"Eur J Oral 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