中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2015年
10期
636-639
,共4页
复合树脂类%美学,牙科%老化%透光性
複閤樹脂類%美學,牙科%老化%透光性
복합수지류%미학,아과%노화%투광성
Composite resins%Esthetics,dental%Aging%Translucency
目的 比较人工老化对硅氧烷基和甲基丙烯酸基复合树脂颜色和透光性的影响,为临床提供参考.方法 选用3种光固化复合树脂:甲基丙烯酸基复合树脂A (FiltekTM Z350)、B(FiltekTMP60)和硅氧烷基复合树脂C(FiltekTM P90).每种树脂制备10片试样(直径10 mm,厚度1 mm),均分至水储存(37℃,180d)和冷热循环[(5.0±0.5)与(55.0±1.0)℃,10 000次]两种老化方式中.用分光光度比色仪测量老化前后3种树脂在黑、白、灰背景下的明度(L+)、红绿色品(a*)和黄蓝色品(b*),计算色差(△E)、透光性参数(TP)及其改变(△TP).用独立样本t检验比较3种树脂△E、△TP差异以及各树脂老化前后TP差异;用偏相关分析老化前后△L*、△a*、△b*对△E的影响和黑白背景下色品差值的变化对△TP的影响.结果 树脂C水储存(白、灰背景)和冷热循环(3种背景)老化后均出现视觉可辨的色差(△E＞2.75),且均显著大于树脂A、B(P＜0.05).与冷热循环前相比,树脂C冷热循环后TP显著降低(P＜0.05),且△TP显著小于树脂B(P＜0.05).偏相关分析显示:对于树脂B,白背景下冷热循环后AE与△L*和△b*相关(P＜0.05);对于树脂C,白背景和灰背景下水储存后△E均与△b*(P＜0.05)相关,冷热循环后△E均与△L*和△b*相关(P＜0.05),但黑白背景下色品差值的变化与△TP无明显相关(P＞0.05).结论 人工老化后硅氧烷基复合树脂颜色和透光性变化较明显,且与丙烯酸基复合树脂存在差异.
目的 比較人工老化對硅氧烷基和甲基丙烯痠基複閤樹脂顏色和透光性的影響,為臨床提供參攷.方法 選用3種光固化複閤樹脂:甲基丙烯痠基複閤樹脂A (FiltekTM Z350)、B(FiltekTMP60)和硅氧烷基複閤樹脂C(FiltekTM P90).每種樹脂製備10片試樣(直徑10 mm,厚度1 mm),均分至水儲存(37℃,180d)和冷熱循環[(5.0±0.5)與(55.0±1.0)℃,10 000次]兩種老化方式中.用分光光度比色儀測量老化前後3種樹脂在黑、白、灰揹景下的明度(L+)、紅綠色品(a*)和黃藍色品(b*),計算色差(△E)、透光性參數(TP)及其改變(△TP).用獨立樣本t檢驗比較3種樹脂△E、△TP差異以及各樹脂老化前後TP差異;用偏相關分析老化前後△L*、△a*、△b*對△E的影響和黑白揹景下色品差值的變化對△TP的影響.結果 樹脂C水儲存(白、灰揹景)和冷熱循環(3種揹景)老化後均齣現視覺可辨的色差(△E＞2.75),且均顯著大于樹脂A、B(P＜0.05).與冷熱循環前相比,樹脂C冷熱循環後TP顯著降低(P＜0.05),且△TP顯著小于樹脂B(P＜0.05).偏相關分析顯示:對于樹脂B,白揹景下冷熱循環後AE與△L*和△b*相關(P＜0.05);對于樹脂C,白揹景和灰揹景下水儲存後△E均與△b*(P＜0.05)相關,冷熱循環後△E均與△L*和△b*相關(P＜0.05),但黑白揹景下色品差值的變化與△TP無明顯相關(P＞0.05).結論 人工老化後硅氧烷基複閤樹脂顏色和透光性變化較明顯,且與丙烯痠基複閤樹脂存在差異.
목적 비교인공노화대규양완기화갑기병희산기복합수지안색화투광성적영향,위림상제공삼고.방법 선용3충광고화복합수지:갑기병희산기복합수지A (FiltekTM Z350)、B(FiltekTMP60)화규양완기복합수지C(FiltekTM P90).매충수지제비10편시양(직경10 mm,후도1 mm),균분지수저존(37℃,180d)화랭열순배[(5.0±0.5)여(55.0±1.0)℃,10 000차]량충노화방식중.용분광광도비색의측량노화전후3충수지재흑、백、회배경하적명도(L+)、홍록색품(a*)화황람색품(b*),계산색차(△E)、투광성삼수(TP)급기개변(△TP).용독립양본t검험비교3충수지△E、△TP차이이급각수지노화전후TP차이;용편상관분석노화전후△L*、△a*、△b*대△E적영향화흑백배경하색품차치적변화대△TP적영향.결과 수지C수저존(백、회배경)화랭열순배(3충배경)노화후균출현시각가변적색차(△E＞2.75),차균현저대우수지A、B(P＜0.05).여랭열순배전상비,수지C랭열순배후TP현저강저(P＜0.05),차△TP현저소우수지B(P＜0.05).편상관분석현시:대우수지B,백배경하랭열순배후AE여△L*화△b*상관(P＜0.05);대우수지C,백배경화회배경하수저존후△E균여△b*(P＜0.05)상관,랭열순배후△E균여△L*화△b*상관(P＜0.05),단흑백배경하색품차치적변화여△TP무명현상관(P＞0.05).결론 인공노화후규양완기복합수지안색화투광성변화교명현,차여병희산기복합수지존재차이.
Objective To evaluate the color stability and translucency of silorane-based low shrinkage composite after in vitro aging procedures of thermal cycling and water storage respectively,and to compare with those of conventional methacrylate-based posterior composite.Methods Three light-cured composite resins,dimethacrylate-based composite A (FiltekTM Z350),B (FiltekTM P60) and silorane-based composite C (FiltekTM P90),were tested in this study.Ten specimens (10 mm in diameter,1 mm in height) of each composite were prepared.The ten specimens in each group were then divided into two subgroups (n=5).One subgroup underwent thermal cycling [(5.0±0.5) ～(55.0± 1.0) ℃,10 000 cycles] and the other was stored in 37 ℃ distilled water for 180 days.With a spectrophotometer,the CIE L*a*b* parameters of the specimens were tested before and after artificial aging against white,medium grey and black backgrounds,respectively.△E,TP and △TP were calculated and data were analyzed using independent-samples t test and partial analysis (P＜0.05).Results With regard to color stability,silorane-based composite showed color alteration above the clinically acceptable levels (△E＞3.3),and also showed higher △E with a statistically significant difference in comparison with the other composites (B and C)(P＜0.05) after artificial aging.With regard to translucency,composite C showed more alteration compared with composite B (P＜0.05) after thermal cycling.Conclusions It may be concluded that the silorane-based composite underwent greater alteration with regard to color stability and translucency.
