Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics.

IF 3.2 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-05-17 DOI:10.2186/jpr.JPR_D_22_00304

Ting-An Chen, Pei-Ying Lu, Po-Yen Lin, Chih-Wen Chi, Hon Yin Cheng, Yu-Jung Lai, Fajen Wang, Yu-Chih Chiang

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Abstract

Purpose: To assess the effects of ceramic thickness, ceramic translucency, and light transmission on restorative composites used as luting cement for lithium disilicate-based ceramics.

Methods: Four luting types of cement were tested (n=8); a dual-cured resin cement (Multilink N), a light-cured conventional flowable composite (Tetric N-Flow), and two light-cured bulk-fill flowable composites (Tetric N-Flow Bulk Fill and X-tra base). The 20 s- or 40 s-light (1000 mW/cm²) was transmitted through 1- or 2-mm-thick high- or low-translucency (HT- or LT-) ceramic discs (IPS e.Max press) to reach the 1-mm-thick luting cement. Light transmitted to cement without ceramic served as a control. Vickers hardness number (VHN), flexural strength (FS), fractography, and degree of conversion (DC) were evaluated. One-way and multi-way analysis of variance was conducted to determine the effects of factors on VHN and FS.

Results: Ceramic thickness, light transmission time, and cement type significantly affected the VHN of the luting cement (P < .000). Only Multilink N (LT- and HT-1mm) and Tetric N-Flow (HT-1mm) reached 90% VHN of corresponding control by 20 s-light transmissions, but Tetric N-Flow exhibited lowest VHN and approximately 1/3-1/2 VHN of Multilink N (P < 0.05). X-tra base expressed superior physicochemical properties to Tetric N-Flow Bulk Fill (P < 0.05) and reached >90% VHN of control in all conditions with 40 s-light transmissions except for LT-2 mm. DC, FS, and fractography supported these findings.

Conclusions: The light-cured bulk-fill composite served as a luting cement for lithium-disilicate-based ceramics in a product-dependent manner. Light transmission time is crucial to ensure sufficient luting cement polymerization.

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陶瓷厚度、陶瓷半透明度和透光率对光固化大块填充树脂复合材料作为二硅酸锂基陶瓷胶合剂的影响

目的：评估陶瓷厚度、陶瓷半透明度和透光率对用作二硅酸锂基陶瓷粘结剂的修复复合材料的影响：测试了四种粘结剂（n=8）：一种双固化树脂粘结剂（Multilink N）、一种光固化传统可流动复合材料（Tetric N-Flow）和两种光固化体积填充可流动复合材料（Tetric N-Flow Bulk Fill 和 X-tra base）。20 秒或 40 秒的光（1000 mW/cm2）穿过 1 毫米或 2 毫米厚的高透光或低透光（HT 或 LT）陶瓷盘（IPS e.Max press），到达 1 毫米厚的粘结水泥。不含陶瓷的骨水泥透射光作为对照。对维氏硬度（VHN）、抗弯强度（FS）、断口形貌和转换度（DC）进行了评估。为确定各因素对 VHN 和 FS 的影响，进行了单向和多向方差分析：结果：陶瓷厚度、透光时间和骨水泥类型对骨水泥的 VHN 有明显影响（P < .000）。只有 Multilink N（LT- 和 HT-1mm）和 Tetric N-Flow（HT-1mm）在 20 秒透光时间内的 VHN 达到相应对照的 90%，但 Tetric N-Flow 的 VHN 最低，约为 Multilink N 的 1/3-1/2 VHN（P < 0.05）。X-tra base 的理化特性优于 Tetric N-Flow Bulk Fill（P < 0.05），除 LT-2 mm 外，在所有条件下，40 秒透光率的 VHN 均大于对照组的 90%。DC、FS 和碎裂图都支持这些发现：光固化散装填充复合材料可作为锂硅酸盐基陶瓷的粘结剂，其效果取决于产品。透光时间对于确保足够的粘结剂聚合至关重要。

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来源期刊

Journal of prosthodontic research DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

6.90

自引率

11.10%

发文量

161

期刊介绍： Journal of Prosthodontic Research is published 4 times annually, in January, April, July, and October, under supervision by the Editorial Board of Japan Prosthodontic Society, which selects all materials submitted for publication. Journal of Prosthodontic Research originated as an official journal of Japan Prosthodontic Society. It has recently developed a long-range plan to become the most prestigious Asian journal of dental research regarding all aspects of oral and occlusal rehabilitation, fixed/removable prosthodontics, oral implantology and applied oral biology and physiology. The Journal will cover all diagnostic and clinical management aspects necessary to reestablish subjective and objective harmonious oral aesthetics and function. The most-targeted topics: 1) Clinical Epidemiology and Prosthodontics 2) Fixed/Removable Prosthodontics 3) Oral Implantology 4) Prosthodontics-Related Biosciences (Regenerative Medicine, Bone Biology, Mechanobiology, Microbiology/Immunology) 5) Oral Physiology and Biomechanics (Masticating and Swallowing Function, Parafunction, e.g., bruxism) 6) Orofacial Pain and Temporomandibular Disorders (TMDs) 7) Adhesive Dentistry / Dental Materials / Aesthetic Dentistry 8) Maxillofacial Prosthodontics and Dysphagia Rehabilitation 9) Digital Dentistry Prosthodontic treatment may become necessary as a result of developmental or acquired disturbances in the orofacial region, of orofacial trauma, or of a variety of dental and oral diseases and orofacial pain conditions. Reviews, Original articles, technical procedure and case reports can be submitted. Letters to the Editor commenting on papers or any aspect of Journal of Prosthodontic Research are welcomed.