Effect of internal connection type and screw channel angle on the screw stability of anterior implant-supported zirconia crowns

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dc.authoridAbou-Ayash, Samir/0000-0003-1047-5571
dc.authoridDonmez, Mustafa Borga/0000-0002-3094-7487
dc.authoridGüven, Mehmet Esad/0000-0001-9075-9931
dc.authoridCakmak, Gulce/0000-0003-1751-9207
dc.authoridSchimmel, Martin/0000-0001-9700-5534
dc.authorwosidAbou-Ayash, Samir/HTM-2215-2023
dc.authorwosidDonmez, Mustafa Borga/AGY-6155-2022
dc.authorwosidGüven, Mehmet Esad/AAG-5335-2020
dc.authorwosidAbou-Ayash, Samir/AAE-6824-2019
dc.authorwosidSchimmel, Martin/F-5694-2011
dc.contributor.authorCakmak, Guelce
dc.contributor.authorGuven, Mehmet Esad
dc.contributor.authorDonmez, Mustafa Borga
dc.contributor.authorKahveci, Cigdem
dc.contributor.authorSchimmel, Martin
dc.contributor.authorAbou-Ayash, Samir
dc.contributor.authorYilmaz, Burak
dc.date.accessioned2024-05-19T14:39:01Z
dc.date.available2024-05-19T14:39:01Z
dc.date.issued2023
dc.departmentİstinye Üniversitesien_US
dc.description.abstractObjectivesTo investigate the effect of implant-abutment connection and screw channel angle on screw stability by comparing a newly introduced and an established connection, before and after cyclic loading.Materials and MethodsImplants (N = 44) with Torcfit (TF) or Crossfit (CF) connection were divided to be restored with a straight (CFS and TFS) or an angled screw access channel (CFA and TFA) titanium-base abutment (n = 11). CFA and TFA received screw-retained crowns, whereas CFS and TFS received hybrid zirconia abutments and cement-retained crowns. The initial torque value (ITV) of each complex (ITVI) and removal torque value (RTV) after 24 h (RTVI) were measured. Screws were replaced with new ones, ITVs were recorded again (ITVF), and crowns were cyclically loaded (2.4 million cycles, 98 N) to measure RTVs again (RTVF). Percentage torque loss was calculated. Data were analyzed (a = 0.05).ResultsITVs were similar among groups (p = .089). CF led to higher RTVs (p = .002), while CFS had higher RTVI than CFA (p = .023). After 24 h, CFS had lower percentage torque loss than TF, while CFA had lower percentage torque loss than TFA (p = .011). After cyclic loading, CF led to lower percentage torque (p < .001).ConclusionThe implant-abutment connection affected the removal torque values. However, no screw loosening occurred during cyclic loading, which indicated a stable connection for all groups. Screw access channel angle did not affect screw stability after cyclic loading.en_US
dc.description.sponsorshipBuser Implant Foundation Junior Investigator Grant [21-01]; Universitat Bernen_US
dc.description.sponsorshipACKNOWLEDGMENTS This study was funded by the Buser Implant Foundation Junior Investigator Grant (JIG no. 21-01). Dr Gulce Cakmak was the recipient of the grant that funded this study. Open access funding provided by Universitat Bern.en_US
dc.identifier.doi10.1111/clr.14165
dc.identifier.endpage1256en_US
dc.identifier.issn0905-7161
dc.identifier.issn1600-0501
dc.identifier.issue11en_US
dc.identifier.pmid37578653en_US
dc.identifier.scopus2-s2.0-85168097628en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1248en_US
dc.identifier.urihttps://doi.org10.1111/clr.14165
dc.identifier.urihttps://hdl.handle.net/20.500.12713/4676
dc.identifier.volume34en_US
dc.identifier.wosWOS:001048515000001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofClinical Oral Implants Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240519_kaen_US
dc.subjectAngled Screw Channelen_US
dc.subjectImplant-Abutment Connectionen_US
dc.subjectScrew Stabilityen_US
dc.subjectTorque Lossen_US
dc.titleEffect of internal connection type and screw channel angle on the screw stability of anterior implant-supported zirconia crownsen_US
dc.typeArticleen_US

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