Çağlayan Esma, Sasany Rafat, Bolat Burcu Naz, Hartavi Didar, Batgerel Oyun-Erdene, Ucar Sultan Merve, Umurca Dilara Gülhan
Bafra Oral and Dental Health Hospital, Samsun, Turkey.
Department of Prosthodontics, Faculty of Dentistry, Biruni University, Istanbul, Turkey.
BMC Oral Health. 2025 Jan 27;25(1):144. doi: 10.1186/s12903-025-05538-w.
This study aims to examine color properties of repairs made with various composites on restorations produced through additive-manufactured resin composites (AM-RC) and zirconia (AM-Z) or subtractive manufacturing (SM) after coffee thermocycling (CTC).
Disk-shaped specimens (Ø10 × 2 mm; N = 120) were fabricated using six different material groups: additively manufactured resin composite (AM-RC) materials (Crowntec [C], NextDent [ND]), additively manufactured zirconia (AM-Z) materials (Lithoz [LI], INNI-Cera [IN]), and subtractively manufactured (SM) materials (CEREC Tessera [ALD], Vita Enamic [EN]). Subsequently, each group was further subdivided into two subgroups (n = 10) based on the type of repair using two different composites resins: Clearfil Majesty Posterior (CL) (n = 60) and Filtek Z350 (FZ) (n = 60). Specimens underwent thermal cycling (CTC), consisting of 10,000 cycles between 5 °C and 55 °C. Color measurements were performed both before and after thermal cycling for all materials. Color discrepancies (ΔE00) and relative translucency parameters (RTPs) were calculated. Statistical analyses were conducted at a significance level of α = 0.05.
A one-way ANOVA of ΔE00 values between CL and FZ revealed a significant difference (P = 0.007), with FZ exhibiting higher ΔE00 values. Significant differences in ΔE00 values were also observed among IN, C, and ND after CTC (P < 0.05). ALD demonstrated the lowest amount color change (P < 0.05). LI and EN colors showed no significant difference (P = 0.75). Following CTC, C, ND, and IN colors matched CL. In contrast, ALD, EN, and L colors exhibited significant differences (P ≤ 0.050). FZ showed a poor color match with all AM and SM materials. Furthermore, significant differences in RTP values were identified for all specimens (P < 0.001), with LI having the highest RTP and IN the lowest (P < 0.001).
The optical properties of composite and ceramic materials, as well as their stability over time, are crucial for their durability. ALD demonstrated the most consistent color stability. While the CL repair composites experienced some color changes, these changes remained within acceptable limits. Additionally, the LI (AM-Z) material exhibited the highest level of translucency.
本研究旨在检测在经过咖啡热循环（CTC）后，使用各种复合材料对通过增材制造树脂复合材料（AM-RC）和氧化锆（AM-Z）或减材制造（SM）生产的修复体进行修复后的颜色特性。
使用六种不同材料组制作圆盘形试件（直径10×2mm；N = 120）：增材制造树脂复合材料（AM-RC）材料（Crowntec [C]、NextDent [ND]）、增材制造氧化锆（AM-Z）材料（Lithoz [LI]、INNI-Cera [IN]）以及减材制造（SM）材料（CEREC Tessera [ALD]、Vita Enamic [EN]）。随后，根据使用两种不同复合树脂的修复类型，将每组进一步细分为两个亚组（n = 10）：Clearfil Majesty Posterior（CL）（n = 60）和Filtek Z350（FZ）（n = 60）。试件经历热循环（CTC），即在5°C和55°C之间进行10000次循环。对所有材料在热循环前后均进行颜色测量。计算颜色差异（ΔE00）和相对透明度参数（RTP）。在显著性水平α = 0.05下进行统计分析。
对CL和FZ之间的ΔE00值进行单因素方差分析显示存在显著差异（P = 0.007），FZ的ΔE00值更高。在CTC后，IN、C和ND之间的ΔE00值也观察到显著差异（P < 0.05）。ALD显示出最低的颜色变化量（P < 0.05）。LI和EN的颜色无显著差异（P = 0.75）。经过CTC后，C、ND和IN的颜色与CL匹配。相比之下，ALD、EN和L的颜色存在显著差异（P≤0.050）。FZ与所有AM和SM材料的颜色匹配性较差。此外，所有试件的RTP值均存在显著差异（P < 0.001），LI的RTP最高，IN的最低（P < 0.001）。
复合材料和陶瓷材料的光学性能及其随时间的稳定性对其耐久性至关重要。ALD表现出最一致的颜色稳定性。虽然CL修复复合材料经历了一些颜色变化，但这些变化仍在可接受范围内。此外，LI（AM-Z）材料表现出最高水平的透明度。
