{"title":"三种不同脱敏膏处理外露颈牙本质的形态学及化学力学分析(体外比较研究)","authors":"Manar S. Mohammad, Rasha H. Jehad","doi":"10.1016/j.jobcr.2025.06.018","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>Obstructing dentinal tubules is a valuable approach for managing dentin hypersensitivity. Although various agents promote dentin remineralization, direct comparisons between theobromine, bioactive glass (BAG), and nano-hydroxyapatite (Nano-HAP) under simulated oral conditions remain limited. To fill this gap, this in vitro study aimed to evaluate and compare the effectiveness of these three treatments on exposed cervical dentin. The assessment focused on their chemical, morphological, and mechanical effects on dentin.</div></div><div><h3>Materials and methods</h3><div>Forty-eight human dentin slabs were obtained from the cervical portions of twelve sound premolar teeth. Baseline Raman spectroscopy and VMH tests were done to exclude outliers. All specimens were treated with 6 % citric acid (pH 2.0) for 2 min to remove the smear layer. They randomly assigned to four groups (n = 12): artificial saliva (AS), theobromine, BAG, and Nano-HAP. Evaluations were conducted using Raman spectroscopy (phosphate peak intensity at 960cm<sup>−1</sup>), Vickers microhardness testing (VMH), and morphological assessment under scanning electron microscopy (SEM).</div></div><div><h3>Results</h3><div>Theobromine, BAG, and nano-HAP groups demonstrated a statistically significant increase in Raman phosphate peak intensity (960cm<sup>−1</sup>) and Vickers microhardness values (p < 0.05), indicating surface remineralization. In contrast, the artificial saliva group exhibited a significant decrease in phosphate peak intensity and microhardness values (p < 0.05).</div></div><div><h3>Conclusion</h3><div>All tested agents significantly enhanced the Raman phosphate peaks and microhardness values compared to the control. Nano-HAP showed the highest potential for promoting the remineralization of exposed dentin surfaces. Within the study's limitations, it can be concluded that theobromine, BAG, and nano-HAP are effective in occluding dentinal tubules.</div></div>","PeriodicalId":16609,"journal":{"name":"Journal of oral biology and craniofacial research","volume":"15 5","pages":"Pages 982-991"},"PeriodicalIF":0.0000,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Morphological & chemo mechanical analysis of exposed cervical dentin treated with three different desensitizing pastes (comparative in vitro study)\",\"authors\":\"Manar S. Mohammad, Rasha H. Jehad\",\"doi\":\"10.1016/j.jobcr.2025.06.018\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><div>Obstructing dentinal tubules is a valuable approach for managing dentin hypersensitivity. Although various agents promote dentin remineralization, direct comparisons between theobromine, bioactive glass (BAG), and nano-hydroxyapatite (Nano-HAP) under simulated oral conditions remain limited. To fill this gap, this in vitro study aimed to evaluate and compare the effectiveness of these three treatments on exposed cervical dentin. The assessment focused on their chemical, morphological, and mechanical effects on dentin.</div></div><div><h3>Materials and methods</h3><div>Forty-eight human dentin slabs were obtained from the cervical portions of twelve sound premolar teeth. Baseline Raman spectroscopy and VMH tests were done to exclude outliers. All specimens were treated with 6 % citric acid (pH 2.0) for 2 min to remove the smear layer. They randomly assigned to four groups (n = 12): artificial saliva (AS), theobromine, BAG, and Nano-HAP. Evaluations were conducted using Raman spectroscopy (phosphate peak intensity at 960cm<sup>−1</sup>), Vickers microhardness testing (VMH), and morphological assessment under scanning electron microscopy (SEM).</div></div><div><h3>Results</h3><div>Theobromine, BAG, and nano-HAP groups demonstrated a statistically significant increase in Raman phosphate peak intensity (960cm<sup>−1</sup>) and Vickers microhardness values (p < 0.05), indicating surface remineralization. In contrast, the artificial saliva group exhibited a significant decrease in phosphate peak intensity and microhardness values (p < 0.05).</div></div><div><h3>Conclusion</h3><div>All tested agents significantly enhanced the Raman phosphate peaks and microhardness values compared to the control. Nano-HAP showed the highest potential for promoting the remineralization of exposed dentin surfaces. Within the study's limitations, it can be concluded that theobromine, BAG, and nano-HAP are effective in occluding dentinal tubules.</div></div>\",\"PeriodicalId\":16609,\"journal\":{\"name\":\"Journal of oral biology and craniofacial research\",\"volume\":\"15 5\",\"pages\":\"Pages 982-991\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-07-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of oral biology and craniofacial research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2212426825001319\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Medicine\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of oral biology and craniofacial research","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2212426825001319","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Medicine","Score":null,"Total":0}
Morphological & chemo mechanical analysis of exposed cervical dentin treated with three different desensitizing pastes (comparative in vitro study)
Background
Obstructing dentinal tubules is a valuable approach for managing dentin hypersensitivity. Although various agents promote dentin remineralization, direct comparisons between theobromine, bioactive glass (BAG), and nano-hydroxyapatite (Nano-HAP) under simulated oral conditions remain limited. To fill this gap, this in vitro study aimed to evaluate and compare the effectiveness of these three treatments on exposed cervical dentin. The assessment focused on their chemical, morphological, and mechanical effects on dentin.
Materials and methods
Forty-eight human dentin slabs were obtained from the cervical portions of twelve sound premolar teeth. Baseline Raman spectroscopy and VMH tests were done to exclude outliers. All specimens were treated with 6 % citric acid (pH 2.0) for 2 min to remove the smear layer. They randomly assigned to four groups (n = 12): artificial saliva (AS), theobromine, BAG, and Nano-HAP. Evaluations were conducted using Raman spectroscopy (phosphate peak intensity at 960cm−1), Vickers microhardness testing (VMH), and morphological assessment under scanning electron microscopy (SEM).
Results
Theobromine, BAG, and nano-HAP groups demonstrated a statistically significant increase in Raman phosphate peak intensity (960cm−1) and Vickers microhardness values (p < 0.05), indicating surface remineralization. In contrast, the artificial saliva group exhibited a significant decrease in phosphate peak intensity and microhardness values (p < 0.05).
Conclusion
All tested agents significantly enhanced the Raman phosphate peaks and microhardness values compared to the control. Nano-HAP showed the highest potential for promoting the remineralization of exposed dentin surfaces. Within the study's limitations, it can be concluded that theobromine, BAG, and nano-HAP are effective in occluding dentinal tubules.
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.