O'Keefe K L, Miller B H, Powers J M
Department of Restorative Dentistry and Biomaterials Science, Houston Biomaterials Research Center, University of Texas-Houston Dental Branch, Texas, USA.
Int J Prosthodont. 2000 Jan-Feb;13(1):47-51.
The purpose of this study was to measure the in vitro tensile bond strength of 3 types of adhesive resin cements to stainless steel, titanium, carbon fiber-reinforced resin, and zirconium oxide post materials.
Disks of post materials were polished to 600 grit, air abraded, and ultrasonically cleaned. Zirconium oxide bonding surfaces were pretreated with hydrofluoric acid and silanated. Bis-Core, C&B Metabond, and Panavia cements were bonded to the post specimens and placed in a humidor for 24 hours. Post specimens were debonded in tension. Means and standard deviations (n = 5) were analyzed by 2-way analysis of variance. Tukey-Kramer intervals at the 0.05 significance level were calculated. Failure modes were observed.
Panavia 21 provided the highest bond strengths for all types of post materials, ranging from 22 MPa (zirconium oxide) to 37 MPa (titanium). C&B Metabond bonded significantly more strongly to stainless steel (27 MPa) and titanium (22 MPa) than to zirconium oxide (7 MPa). Bis-Core results were the lowest, ranging from 16 MPa (stainless steel) to 8 MPa (zirconium oxide). In most cases, bonds to carbon fiber post materials were weaker than to stainless steel and titanium, but stronger than to zirconium oxide. In general, higher bond strengths resulted in a higher percentage of cohesive failures within the cement.
Panavia 21 provided the highest bond strengths to all post materials, followed by C&B Metabond. In most cases, adhesive resins had higher bond strengths to stainless steel, titanium, and carbon fiber than to zirconium oxide.
本研究旨在测量3种粘结性树脂水门汀与不锈钢、钛、碳纤维增强树脂及氧化锆桩核材料之间的体外拉伸粘结强度。
将桩核材料制成的圆盘打磨至600目，进行空气喷砂处理并超声清洗。氧化锆粘结面用氢氟酸预处理并进行硅烷化处理。将Bis-Core、C&B Metabond和Panavia水门汀粘结到桩核试件上，置于保湿器中24小时。对桩核试件进行拉伸脱粘试验。采用双向方差分析对均值和标准差（n = 5）进行分析。计算0.05显著性水平下的Tukey-Kramer区间。观察失效模式。
Panavia 21对所有类型的桩核材料均提供了最高的粘结强度，范围从22MPa（氧化锆）至37MPa（钛）。C&B Metabond与不锈钢（27MPa）和钛（22MPa）的粘结强度显著高于与氧化锆（7MPa）的粘结强度。Bis-Core的结果最低，范围从16MPa（不锈钢）至8MPa（氧化锆）。在大多数情况下，与碳纤维桩核材料的粘结强度低于与不锈钢和钛的粘结强度，但高于与氧化锆的粘结强度。一般来说，较高的粘结强度会导致水门汀内聚性失效的百分比更高。
Panavia 21对所有桩核材料均提供了最高的粘结强度，其次是C&B Metabond。在大多数情况下，粘结性树脂与不锈钢、钛和碳纤维的粘结强度高于与氧化锆的粘结强度。
