体层树脂厚度对聚醚醚酮-Crea.lign修复体颜色的影响

doi:10.7518/hxkq.2018.05.012

摘要/Abstract

摘要：

目的研究不同体层树脂厚度对聚醚醚酮（PEEK）-Crea.lign修复体颜色的影响。方法制备5个0.6 mm厚度的PEEK试件,测量PEEK试件的色度值。利用模具在试件上粘接0.1 mm厚度的遮色剂和1.5 mm厚度的体层树脂。将试件的体层厚度依次打磨成1.4、1.2、1.0、0.8、0.6、0.4、0.2、0.0 mm,每次打磨结束后,测量各组色度值。结果 PEEK厚度不变,遮色层厚度为0.1 mm,在1.0~1.4 mm体层厚度范围内,随着体层厚度增加,L*、a*、b*值下降。体层厚度达到0.6 mm之后,相邻组间色差小于1.5 NBS,而非相邻厚度组间色差大于1.5 NBS。PEEK-Crea.lign修复体与PEEK之间的色差均大于1.5 NBS。结论体层树脂厚度变化会影响PEEK-Crea.lign修复体的颜色。使用A₂色系Crea.lign树脂,遮色层厚度为0.1 mm时,0.6 mm体层厚度即可产生足以被临床所接受的PEEK-Crea.lign修复体颜色。

关键词: 聚醚醚酮, Crea.lign树脂, 厚度, 颜色

Abstract:

Objective This study aims to assess the effects of the different thicknesses of body-shade resin layers on the color of polyetheretherketone (PEEK)-Crea.lign restorations. Methods Five PEEK specimens with the thickness of 0.6 mm were prepared. The color values of PEEK specimens were measured. Afterward, opaque-shade resin layers (0.1 mm) and body-shade resin layers (1.5 mm) were stacked with mold. The five specimens were evenly ground to a thickness of 1.4, 1.2, 1.0, 0.8, 0.6, 0.4, 0.2, and 0.0 mm in sequence. After grinding and ultrasonic cleaning, the color value was measured. Results With the constant thickness of PEEK and 0.1 mm thickness of opaque-shade resin layer, the L*, a*, and b* values all showed downward trend with the increased thickness of the body-shade resin layer (1.0-1.4 mm). With the constant thickness of PEEK and 0.1 mm thickness of opaque-shade resin layer, the color difference between the adjacent groups was less than 1.5 NBS. This difference between nonadjacent groups was more than 1.5 NBS when the thickness of the body-shade resin layer reached 0.6 mm. Color difference between PEEK-Crea.lign restoration and PEEK was more than 1.5 NBS. Conclusion The thick-ness change in the body-shade resin layers influence the color of the PEEK-Crea.lign restorations. Using A₂ shade Crea.lign, opaque-shade resin layer thickness is 0.1 and 0.6 mm thickness of body-shade resin layer can produce color which clinically acceptable.

Key words: polyetheretherketone, Crea.lign, thickness, color

中图分类号:

R783.1

张婧婷,苏军,袁艳波,和丽佳,张文云. 体层树脂厚度对聚醚醚酮-Crea.lign修复体颜色的影响[J]. 华西口腔医学杂志, 2018, 36(5): 528-531.

Jingting Zhang,Jun Su,Yanbo Yuan,Lijia He,Wenyun Zhang. Effects of body-shade resin layer thickness on the color of polyetheretherketone-Crea.lign restorations[J]. West China Journal of Stomatology, 2018, 36(5): 528-531.

图/表 2

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组别	L*	a*	b*
PEEK	81.907±0.419	0.593±0.109	22.200±0.339
B-1	80.747±0.632^a	1.280±0.145^e	21.353±0.483^c
B-2	78.667±0.332^b	2.073±0.162^d	24.960±0.330^b
B-3	76.667±0.433^c	2.880±0.163^c	26.440±0.434^a
B-4	75.147±0.329^d	3.567±0.207^b	27.020±0.429^a
B-5	74.713±0.388^d	3.867±0.177^ab	26.620±0.431^a
B-6	73.708±0.340^e	4.117±0.195^a	26.140±0.218^ab
B-7	72.858±0.096^f	4.067±0.131^a	25.250±0.584^b
B-8	72.033±0.159^f	4.025±0.179^a	24.417±0.409^b

组别	B-1	B-2	B-3	B-4	B-5	B-6	B-7	B-8
B-2	4.567±0.327
B-3	7.055±0.397	2.626±0.262
B-4	8.651±0.420	4.365±0.296	1.807±0.343
B-5	8.771±0.557	4.721±0.318	2.223±0.304	0.741±0.276
B-6	8.981±0.582	5.192±0.359	2.859±0.378	1.510±0.331	0.862±0.333
B-7	9.171±0.442	6.099±0.383	4.080±0.343	3.147±0.272	2.456±0.174	1.401±0.415
B-8	9.854±0.404	6.861±0.215	5.051±0.300	3.974±0.584	3.269±0.395	2.550±0.381	1.214±0.218
PEEK	1.643±0.436	4.552±0.359	7.379±0.350	8.846±0.477	8.877±0.299	9.655±0.476	10.307±0.408	10.723±0.236