摘要
目的评价不同种类树脂粘固剂与瓷-牙本质粘接强度的差异，以期为临床提供参考。方法选取无龋坏青年人前磨牙制备牙本质粘接面，铸造直径为3mm、高为3mm的圆柱状瓷块（IPS e．max Press）80个，分为A、B、C、D、E 5组。分别选用树脂粘固剂A（VariolinkⅡ）、B（Multilink Automix）、C（Multilink Sprint）、D（Rely X Unicem）和E（BisCem）将瓷块粘固于牙本质粘接面上，每组制成16个试样。37℃水储24h后每组8个试样直接测试剪切粘接强度，另8个试样进行5000次冷热循环后测试粘接强度，扫描电镜观察粘接面形态。对同种粘固剂冷热循环前后的粘接强度进行双样本t检验。结果冷热循环前A组粘接强度[（22．3±3．9）MPa]最大，B组[（18．1±3．5）MPa]次之，再次为D组[（14．1±2．3）MPa]和E组[（11．7±4．2）MPa]，C组[（11．3±3．6）MPa]最小。冷热循环后A组粘接强度[（17．8±2．5）MPa]仍最大，B组[（14．4±5．5）MPa]和D组[（13．2±2．5）MPa]次之，再次为E组[（8．9±3．2）MPa]，C组[（7．0±2．d）MPa]最小。与冷热循环前相比，冷热循环后A、B、C3组粘接强度均下降，差异有统计学意义（P〈0．05）；D组和E组粘接强度下降不明显（P〉0．05）。结论以全酸蚀粘接技术为基础的树脂粘固剂的粘接强度大于以自酸蚀粘接技术为基础的树脂粘固剂和自粘接型树脂粘固剂。
Objective To evaluate the effect of different resin cements and dentin surface treatment methods on shear bond strength between glass ceramic and human dentin. Methods Freshly extracted noncarious human premolars were collected to prepare flat mesial and distal dentin surface with diamond bur. Besides, ceramic discs （3 mm in diameter,3 mm in height） were fabricated with IPS e. max Press ingots. All samples were randomly divided into five groups, sixteen specimens each. Ceramic discs were cemented on dentin surface using one of the five resin cements [ Group A （ Variolink Ⅱ ）, Group B （ Multlink Automix）, Group C （ Multilink Sprint）, Group D （ Rely X Unicem） and Group E （BisCem） ] respectively. Half of the specimens were stored in water 37 ℃ for 24 h and the other half were additionally thermocycled for 5000 times （5 ℃/55 ℃ ） before shear bond strength test. Dentin bonding surface and transverse plane were examined with a scanning electronic microscope. Results Group A showed the highest bond strength before thermocycling [ （22. 3 ±3.9） MPa], and the bond strength of Group B[ （18. 1 ± 3.5） MPa] was lower than that of Group A（P 〈0. 05）. Group El （11.7 ±4. 2） MPa], Group C[ （11. 3 ±3.6） MPa] and Group D[ （14. 1 ± 2. 3） MPa] had the lowest bond strength. After thermocycling, Group A still showed the highest bond strength [ （ 17.8 ± 2. 3 ） MPa]. The bond strength of Group B [ （ 14. 4 ± 3.5 ） MPa] and Group D[ （13.2 ±2. 5） MPa] were lower than that of Group A. Group El （8. 9 ±3.2） MPa] and Group C [ （7. 0±2.4） MPa] showed the lowest bond strength. The bond strength of all groups decreased notably after thermocycling except Group E and Group D. Conclusions The resin cement based on etch-rinsing bonding system has higher bond strength to dentin than those based on self-etch bonding system and selfadhesive resin cements.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2009年第2期113-116,共4页
Chinese Journal of Stomatology
基金
留学回国人员科技活动资助基金（2006195）
