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Effects of insertion angle and implant thread type on the fracture properties of orthodontic mini-implants during insertion

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dc.contributor.authorCho, Il-Sik-
dc.contributor.authorKim, Tae-Woo-
dc.contributor.authorAhn, Sug-Joon-
dc.contributor.authorYang, Il-Hyung-
dc.contributor.authorBaek, Seung-Hak-
dc.creator백승학-
dc.date.accessioned2014-07-23T05:11:55Z-
dc.date.available2014-07-23T05:11:55Z-
dc.date.issued2013-07-
dc.identifier.citationAngle Orthodontist, Vol.83, No.4, pp. 698-704-
dc.identifier.issn0003-3219-
dc.identifier.urihttps://hdl.handle.net/10371/92575-
dc.description.abstractObjective: To determine the effects of insertion angle (IA) and thread type on the fracture properties of orthodontic mini-implants (OMIs) during insertion. Materials and Methods: A total of 100 OMIs (self-drilling cylindrical; 11 mm in length) were allocated into 10 groups according to thread type (dual or single) and IA (0 degrees, 8 degrees, 13 degrees, 18 degrees, and 23 degrees) (n = 10 per group). The OMIs were placed into artificial materials simulating human tissues: two-layer bone blocks (Sawbones), root (polymethylmethacrylate stick), and periodontal ligament (Imprint-II Garant light-body). Maximum insertion torque (MIT), total insertion energy (TIE), and peak time (PT) were measured and analyzed statistically. Results: There were significant differences in MIT, TIE, and PT among the different IAs and threads (all P<.001). When IA increased, MIT increased in both thread groups. However, TIE and PT did not show significant differences among 0 degrees, 8 degrees, and 13 degrees IAs in the dual-thread group or 8 degrees, 13 degrees, and 18 degrees IAs in the single-thread group. The dual-thread groups showed higher MIT at all IAs, higher TIE at 0 degrees and 23 degrees IAs, and longer PT at a 23 degrees IA than the single-thread groups. In the 0 degrees, 8 degrees, and 13 degrees IA groups, none of the OMIs fractured or became deformed. However, in the 18 degrees IA group, all the OMIs were fractured or deformed. Dual-thread OMIs showed more fracturing than deformation compared to single-thread OMIs (P < .01). In the 23 degrees IA group, all OMIs penetrated the artificial root without fracturing and deformation. Conclusions: When OMIs contact artificial root at a critical contact angle, the deformation or fracture of OMIs can occur at lower MIT values than those of penetration.en
dc.language.isoenen
dc.publisherE.H Angle Education and Research Foundationen
dc.subject복합학en
dc.subjectFracture properties-
dc.subjectMini-implant-
dc.subjectInsertion angle-
dc.subjectImplant thread type-
dc.titleEffects of insertion angle and implant thread type on the fracture properties of orthodontic mini-implants during insertionen
dc.typeArticle-
dc.contributor.AlternativeAuthor조일식-
dc.contributor.AlternativeAuthor김태우-
dc.contributor.AlternativeAuthor안석준-
dc.contributor.AlternativeAuthor양일형-
dc.contributor.AlternativeAuthor백승학-
dc.identifier.doi10.2319/082812-689.1-
dc.description.srndOAIID:oai:osos.snu.ac.kr:snu2013-01/102/0000004298/8-
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dc.description.srndPERF_CD:SNU2013-01-
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dc.description.srndUSER_ID:0000004298-
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dc.description.srndEMP_ID:A072100-
dc.description.srndDEPT_CD:852-
dc.description.srndCITE_RATE:1.184-
dc.description.srndFILENAME:조일식-백승학.pdf-
dc.description.srndDEPT_NM:치의과학과-
dc.description.srndSCOPUS_YN:Y-
dc.description.srndCONFIRM:Y-
dc.identifier.srnd2013-01/102/0000004298/8-
Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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