Evaluation of pulpal response at varying remaining dentin thickness in teeth restored with resin bulk fill composite, conventional glass ionomer cement and silver amalgam: Histomorphometric analysis

Q1 Medicine

Journal of oral biology and craniofacial research Pub Date : 2025-02-12 DOI:10.1016/j.jobcr.2024.12.020

Ankita Agarwal , Promila Verma , Rakesh Yadav , Ramesh Bharti , Rhythm Bains , Madhu Kumar , Dipti Shastri

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Abstract

Objective

To compare and evaluate the pulp response to GC glass ionomer cement, SDR plus bulk fill composite and amalgam against gold standard calcium hydroxide cement at varying remaining dentin thickness, in teeth planned for orthodontic extraction.

Method

Thirty-eight human premolars were prepared with 2 mm or 2.5 mm depth cavities. They were restored with GC conventional glass ionomer cement, SDR plus bulk fill composite, amalgam, or lined with Dycal and restored with GIC. Two teeth were used as intact controls. After a 7-day interval, the teeth were extracted and processed for histological examination of the pulp and the thickness of the remaining dentin between the cavity floor and pulp tissue.

Results

All experimental groups showed some degree of inflammatory response. A significantly higher inflammatory response and more tissue disorganization were observed with SDR bulk fill composite (p < 0.05) compared to Glass ionomer cement, amalgam and Dycal at both cavity depths of 2 mm or 2.5 mm. The mean RDTs ranged from 346 μm to 1025 μm.

Conclusions

The study concluded that critical RDT varies for different restorative materials. It was observed that both glass ionomer cement and amalgam demonstrated acceptable biocompatibility when used in deep cavities. At the same time, SDR plus bulk fill composite proved to be the least biocompatible.

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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.