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Fracture resistance of single‐tooth implant‐supported zirconia‐based indirect composite‐layered molar restorations
Author(s) -
Taguchi Kohei,
Komine Futoshi,
Fushiki Ryosuke,
Blatz Markus B.,
Kamio Shingo,
Matsumura Hideo
Publication year - 2014
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/clr.12199
Subject(s) - cubic zirconia , materials science , molar , universal testing machine , dentistry , composite number , composite material , implant , fracture (geology) , ceramic , medicine , surgery , ultimate tensile strength
Objectives This study evaluated the fracture resistance of single‐tooth implant‐supported zirconia‐based indirect composite‐layered molar restorations. Material and methods Forty‐four titanium abutments ( G ingi H ue P ost) were placed on dental implants ( O sseotite I mplant). Standardized single‐tooth cement‐retained implant‐supported mandibular molar restorations were fabricated for each of four test groups ( n = 11) as follows: porcelain‐fused‐to‐metal crowns ( PFM ), zirconia‐based all‐ceramic crowns ( ZAC ), zirconia‐based indirect composite‐layered crowns primed with E stenia O paque P rimer for zirconia frameworks ( ZIC ‐ E ), and zirconia‐based indirect composite‐layered crowns ( ZIC ). The crowns were luted with a glass‐ionomer cement ( K etac C em E asymix). Fracture resistance ( N ) was determined by force application of a perpendicular load to the crowns with a universal testing machine. One‐way analysis of variance ( ANOVA ) and the T ukey's HSD test were used to assess differences in fracture resistance values (α = 0.05). Results Mean fracture resistances ( SD ) were 3.09 (0.22) kN , 3.11 (0.34) kN , 2.84 (0.21) k N , and 2.50 (0.36) kN for the PFM , ZAC , ZIC ‐ E , and ZIC groups, respectively. Fracture resistance in the ZIC specimens was significantly lower ( P < 0.044) than that in the other groups, which did not significantly differ. Conclusions The fracture resistance of single‐tooth implant‐supported zirconia‐based indirect composite‐layered molar crowns primed with E stenia O paque P rimer for zirconia frameworks ( ZIC ‐ E ) is comparable to that of porcelain‐fused‐to‐metal ( PFM ) and zirconia‐based all‐ceramic ( ZAC ) restorations. Application of E stenia O paque P rimer to zirconia ceramic framework provides superior fracture resistance in implant‐supported zirconia‐based indirect composite‐layered molar crowns.