Influence of dentin substitutes and light curing modes on intrapulpal temperature: An in vitro analysis

Q1 Medicine

Journal of oral biology and craniofacial research Pub Date : 2026-05-01 Epub Date: 2026-04-28 DOI:10.1016/j.jobcr.2026.101458

Kritheka Kumaresan, Mathan Rajan Rajendran, Preethi Varadan

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引用次数: 0

Abstract

Background

Deep caries with extensive dentin loss reduces the strength of the tooth. To overcome this, various dentin substitutes have been widely used. Photopolymerization of such dentin substitutes can have an influence on the intrapulpal temperature of tooth which can lead to an increased risk of irreversible damage to the pulpal tissue. The mode of light curing can also have an influence on the rise in the intrapulpal temperature.

Aim

To evaluate the influence of Dentin Substitutes along with alternative Light Curing Modes on the rise in Intrapulpal Temperature.

Materials and methods

A single extracted human mandibular first premolar was used in the study. The root was resected 2 mm below the cementoenamel junction, and the occlusal surface was flattened to maintain 2 mm of remaining dentin thickness. A K- type thermocouple was introduced into the pulp chamber to record intrapulpal temperature during polymerization. Brilliant NG composite served as the control (Group 1), while SDR Plus (Group 2) and EverX Flow (Group 3) were the Dentin substitutes tested. Each group was further divided into three subgroups based on curing mode: Continuous (Subgroup A), Ramped (Subgroup B), and Pulsed (Subgroup C). Mean temperature rise was analyzed using one-way ANOVA and Tukey's post-hoc test.

Results

Group 3 revealed a significantly lower (p value < 0.001) rise in intrapulpal temperature compared to Group 1 and Group 2. Among the different light curing modes, Subgroup C showed a significantly lower (p value = 0.033) rise in intrapulpal temperature compared to Subgroup A and Subgroup C.

Conclusion

•
Ever X Flow resulted in a significantly lower rise in intrapulpal compared to the Control and SDR Plus group.
•
Pulsed mode of curing resulted in a significantly lower rise in intrapulpal temperature compared to the Continuous and Ramped curing modes.

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牙本质替代物和光固化方式对牙髓内温度影响的体外分析

牙本质广泛丧失的深度蛀牙会降低牙齿的强度。为了克服这个问题，各种牙本质替代品被广泛使用。这种牙本质替代物的光聚合可以影响牙髓内温度，从而导致牙髓组织不可逆损伤的风险增加。光固化的方式也会对髓内温度的升高产生影响。目的探讨牙本质替代物与不同光固化方式对牙髓内温度升高的影响。材料与方法采用单颗人下颌第一前磨牙进行研究。在牙髓-牙釉质交界处以下2mm处切除根，并将咬合面压平以保持剩余牙本质厚度2mm。在聚合过程中，将K型热电偶引入髓腔，记录髓腔内温度。Brilliant NG复合物作为对照组（1组），SDR Plus（2组）和EverX Flow（3组）作为牙本质替代物。每组根据固化方式又分为连续固化（亚组A）、斜固化（亚组B）、脉冲固化（亚组C）三个亚组。平均温升分析采用单因素方差分析和Tukey事后检验。结果与1、2组相比，3组患者的髓内温度升高明显降低（p值<； 0.001）。在不同光固化模式下，与a和C亚组相比，C亚组的牙髓内温度升高明显降低（p值= 0.033）。结论•Ever X Flow组的牙髓内温度升高明显低于Control组和SDR Plus组。•与连续和斜坡固化模式相比，脉冲固化模式导致的髓内温度上升明显较低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of oral biology and craniofacial research Medicine-Otorhinolaryngology

CiteScore

4.90

自引率

0.00%

发文量

133

审稿时长

167 days

期刊介绍： Journal of Oral Biology and Craniofacial Research (JOBCR)is the official journal of the Craniofacial Research Foundation (CRF). The journal aims to provide a common platform for both clinical and translational research and to promote interdisciplinary sciences in craniofacial region. JOBCR publishes content that includes diseases, injuries and defects in the head, neck, face, jaws and the hard and soft tissues of the mouth and jaws and face region; diagnosis and medical management of diseases specific to the orofacial tissues and of oral manifestations of systemic diseases; studies on identifying populations at risk of oral disease or in need of specific care, and comparing regional, environmental, social, and access similarities and differences in dental care between populations; diseases of the mouth and related structures like salivary glands, temporomandibular joints, facial muscles and perioral skin; biomedical engineering, tissue engineering and stem cells. The journal publishes reviews, commentaries, peer-reviewed original research articles, short communication, and case reports.