Studying How Calcium Silicate and Radiopacifier Proportions Affect the Physicochemical Properties of Endodontic Calcium Silicate-Based Sealers.

IF 3.2 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Materials Pub Date : 2025-09-17 DOI:10.3390/ma18184340

Raimundo Sales de Oliveira Neto, Guilherme Ferreira da Silva, Tany Carvalho Moreira da Veiga, Stefani Jovedi Rosa, Brenda Stefhany Wilchenski de Souza, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte

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Abstract

This study evaluated how varying calcium silicate (30-50%) and radiopacifier (45-65%) ratios affected the physicochemical properties of experimental sealers (P1-P3) compared to Bio-C Sealer, AH Plus Bioceramic, and AH Plus Jet. Properties such as flowability, solubility, and radiopacity were assessed per ISO 6876/2012, and setting time followed ASTM C266-2008. pH and volumetric changes were measured in acrylic teeth (n = 10) filled with each sealer, with pH evaluated at 3, 24, 72, and 168 h, and volume changes assessed via micro-CT at baseline and after 7 days. P1 showed setting time similar to AH Plus Bioceramic (p > 0.05). All calcium silicate-based sealers had greater solubility than AH Plus Jet (p < 0.05), with only P3 meeting ISO standards. P1 and AH Plus Jet exhibited higher radiopacity (p < 0.05). Bio-C Sealer and AH Plus Bioceramic had more volume change than P2 (p < 0.05). All experimental sealers showed stable volume and increasing alkalinity, peaking at 72h. Bio-C Sealer showed a consistent pH rise, except between 24 and 168 h (p > 0.05). Sealer properties were strongly influenced by the composition. P1 (30% calcium silicate/65% radiopacifier) had superior flowability and radiopacity, while P3 (50% calcium silicate/45% radiopacifier) was the only one to meet solubility standards.

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硅酸钙与放射性不透光剂配比对根管硅酸钙基密封剂理化性能影响的研究。

本研究评估了不同比例的硅酸钙（30-50%）和放射性不透明剂（45-65%）如何影响实验密封剂（P1-P3）与Bio-C密封剂、AH Plus生物陶瓷密封剂和AH Plus Jet密封剂的理化性质。流动性、溶解度和不透光性等性能按照ISO 6876/2012进行评估，凝结时间按照ASTM C266-2008进行评估。分别在3、24、72和168 h时测量pH值和体积变化，并在基线和7天后通过微型ct评估体积变化。P1的凝固时间与AH Plus生物陶瓷相似（p < 0.05）。所有硅酸钙基封口剂的溶解度均高于AH Plus Jet (p < 0.05)，只有P3符合ISO标准。P1和AH Plus Jet具有较高的放射不透性（p < 0.05）。Bio-C Sealer和AH Plus biocceramic的体积变化大于P2 （p < 0.05）。所有实验封口剂的体积稳定，碱度增加，在72h达到峰值。Bio-C Sealer除24 ~ 168 h外，pH值均呈上升趋势（p < 0.05）。封口剂的性能受到成分的强烈影响。P1（30%硅酸钙/65%放射性浊化剂）具有较好的流动性和透光性，而P3（50%硅酸钙/45%放射性浊化剂）是唯一符合溶解度标准的。

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来源期刊

Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

5.80

自引率

14.70%

发文量

7753

审稿时长

1.2 months

期刊介绍： Materials (ISSN 1996-1944) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Materials provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of materials. Chemical syntheses, chemical structures and mechanical, chemical, electronic, magnetic and optical properties and various applications will be considered.