Oper Dent. 2019 Sep/Oct;44(5):452-458. doi: 10.2341/18-088-C. Epub 2019 Jan 23.
The long-term effect of the presence of porcelain laminate veneers (PLVs) on the health of the surrounding gingival issues is not available in the restorative literature.
To assess the long-term effect of PLVs on the health of the surrounding gingival tissues. A secondary aim was to correlate gingival crevicular fluid (GCF) scores with clinical parameters used for gingival health assessment in teeth treated with PLVs.
Patients who received PLVs placed at the Graduate Restorative Clinic within a seven- to 14-year period were recalled for clinical evaluations. Periodontal measurements including gingival index (GI), periodontal pocket depth (PPD), gingival recession (GR), and clinical attachment level (CAL) were measured using a standard probe and indices. Gingival Crevicular Fluid (GCF) was measured with a Periotron machine (Periotron 8000, Oraflow Inc), using Periopaper (Periopaper Gingival Fluid Collection Strip, Oraflow Inc.) for fluid collection. Photographs of any observed clinical defect were taken. Data were tabulated using Excel 2010 (Microsoft Corp). Statistical analysis for all descriptive statistics was performed using SPSS 21 (SPSS Software, IBM Corp.) and Stata SE 13 (Stata Software, StataCorp). Repeated-measures analysis of variance (ANOVA) was done to test for statistical significance of the mean pocket depths between the restored and unrestored surfaces of the veneered teeth. The significance level for all tests was <0.05. Pearson's correlation coefficient was performed for testing statistical significance between GCF and GI and between GCF and PPD.
The frequency distribution of the GI included 47 PLVs (43%) with normal gingiva, 16 (15%) with mild inflammation, and 46 (42%) with moderate inflammation and bleeding on probing. The average PPD on the facial surface of the maxillary and mandibular PLVs was 2.17 mm and 2.16 mm, respectively. On the lingual surface, the average PPD was 2.10 mm for maxillary and 2.22 mm for mandibular PLVs. Gingival recession was seen in 27% of the evaluated PLVs. The repeated-measures ANOVA revealed 0.136, showing no statistical difference in the mean pocket depths between restored facial and unrestored lingual surfaces of the veneered teeth. A moderate correlation (=0.407) was found between GCF and GI, which was significant at <0.001. No correlation (=0.124) was found between GCF and PPD, which was not significant at =0.197.
Gingival response to the evaluated PLVs was in the satisfactory range, with overall GI scores ranging between normal and moderate inflammation, pocket depths ranging from 1 to 2 mm, and recession present in 27% of the evaluated PLVs. No statistically significant difference was found between the mean pocket depths of the restored and unrestored surfaces of veneered teeth (0.136). A moderate correlation was found between GCF and GI.
在修复文献中，没有关于瓷贴面（PLV）存在对周围牙龈问题长期影响的报道。
评估 PLV 对周围牙龈组织健康的长期影响。次要目的是将牙龈沟液（GCF）评分与用于评估 PLV 治疗牙齿牙龈健康的临床参数相关联。
在 7 至 14 年内，在研究生修复诊所接受 PLV 治疗的患者被召回进行临床评估。使用标准探针和指数测量牙周测量值，包括牙龈指数（GI）、牙周袋深度（PPD）、牙龈退缩（GR）和临床附着水平（CAL）。使用 Periotron 机器（Periotron 8000，Oraflow Inc.）测量牙龈沟液（GCF），使用 Periopaper（Periopaper 牙龈液收集条，Oraflow Inc.）进行液体收集。拍摄任何观察到的临床缺陷的照片。使用 Excel 2010（Microsoft Corp.）对数据进行制表。使用 SPSS 21（SPSS 软件，IBM Corp.）和 Stata SE 13（Stata 软件，StataCorp.）对所有描述性统计数据进行统计分析。使用重复测量方差分析（ANOVA）检验贴面牙齿修复和未修复表面之间平均牙周袋深度的统计学意义。所有检验的显著性水平均<0.05。进行皮尔逊相关系数检验，以检验 GCF 与 GI 之间以及 GCF 与 PPD 之间的统计学意义。
GI 的频率分布包括 47 个 PLV（43%）表现为正常牙龈，16 个（15%）表现为轻度炎症，46 个（42%）表现为中度炎症和探诊出血。上颌和下颌 PLV 的颊面平均 PPD 分别为 2.17mm 和 2.16mm。在舌面，上颌 PLV 的平均 PPD 为 2.10mm，下颌 PLV 的平均 PPD 为 2.22mm。27%的评估 PLV 出现牙龈退缩。重复测量方差分析显示 0.136，表明贴面牙齿修复和未修复颊面之间的平均牙周袋深度无统计学差异。GCF 和 GI 之间存在中度相关性（=0.407），在<0.001 时具有统计学意义。GCF 和 PPD 之间无相关性（=0.124），在=0.197 时无统计学意义。
评估的 PLV 对牙龈的反应处于满意范围，总体 GI 评分在正常和中度炎症之间，牙周袋深度在 1 至 2mm 之间，27%的评估 PLV 出现牙龈退缩。贴面牙齿修复和未修复表面之间的平均牙周袋深度无统计学差异（0.136）。GCF 和 GI 之间存在中度相关性。
