{"title":"一项随机对照体内研究:使用聚氯乙烯硅氧烷泡沫和收缩索系统对牙龈移位和临床疗效的比较评估","authors":"Aditya Acharya , Lekha K.P. , Raisa Chodankar , Yash Alpesh Zawar , Konark Patil , Adithi Rao","doi":"10.1016/j.jobcr.2025.07.016","DOIUrl":null,"url":null,"abstract":"<div><div>Every tooth in the arch and the soft tissues around the prepared tooth need to be replicated in the impression. To prevent tearing during impression removal, it is essential to ensure sufficient sulcus width. To date, mechanical, chemico-mechanical, electrosurgical, surgical, and laser methods have been used to accomplish gingival retraction. The purpose of both clinical and laboratory analysis of the efficacies of chemically impregnated retraction cord and polyvinyl siloxane foam retraction systems is based on the relative amount of vertical and horizontal gingival displacement, time of placement, and the presence or absence of bleeding.</div></div><div><h3>Methods and materials</h3><div>A total of 30 participants aged 20–40 years were enrolled in a randomized controlled trial and quality assessment was conducted according to the CONSORT checklist (CTRI/2022/10/046181). In a split-mouth design, retraction was done using 25 % aluminium sulfate-impregnated retraction cords and Magic FoamCord (MFC). The Mann-Whitney and T-tests were used for data analysis.</div></div><div><h3>Result</h3><div>Mann-Whitney Test concluded that for vertical gingival retraction cord and Magic foam at 2nd M are statistically insignificant in all three sites (p > 0.05). The mean horizontal displacement achieved at the second molar and second premolar for retraction cord was 0.36 ± 0.07 mm, which was greater than MFC, 0.24 ± 0.06 mm (p = 0.001; 95 % CI). The T-test used for the time of placement between retraction cord and magic foam cord was significant (p < 0.001). The gingiva was observed for presence or absence of bleeding soon after retrieval of the retraction cord and the MFC.</div></div><div><h3>Conclusion</h3><div>Retraction cords provide greater horizontal displacement but are more time-consuming and traumatic compared to MFC, which is more time-efficient and less invasive. This highlights the need to balance efficacy and efficiency in clinical practice.</div></div>","PeriodicalId":16609,"journal":{"name":"Journal of oral biology and craniofacial research","volume":"15 5","pages":"Pages 1103-1107"},"PeriodicalIF":0.0000,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparative evaluation of gingival displacement and clinical efficacy using polyvinyl siloxane foam and retraction cord systems: A randomized controlled in vivo study\",\"authors\":\"Aditya Acharya , Lekha K.P. , Raisa Chodankar , Yash Alpesh Zawar , Konark Patil , Adithi Rao\",\"doi\":\"10.1016/j.jobcr.2025.07.016\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Every tooth in the arch and the soft tissues around the prepared tooth need to be replicated in the impression. To prevent tearing during impression removal, it is essential to ensure sufficient sulcus width. To date, mechanical, chemico-mechanical, electrosurgical, surgical, and laser methods have been used to accomplish gingival retraction. The purpose of both clinical and laboratory analysis of the efficacies of chemically impregnated retraction cord and polyvinyl siloxane foam retraction systems is based on the relative amount of vertical and horizontal gingival displacement, time of placement, and the presence or absence of bleeding.</div></div><div><h3>Methods and materials</h3><div>A total of 30 participants aged 20–40 years were enrolled in a randomized controlled trial and quality assessment was conducted according to the CONSORT checklist (CTRI/2022/10/046181). In a split-mouth design, retraction was done using 25 % aluminium sulfate-impregnated retraction cords and Magic FoamCord (MFC). The Mann-Whitney and T-tests were used for data analysis.</div></div><div><h3>Result</h3><div>Mann-Whitney Test concluded that for vertical gingival retraction cord and Magic foam at 2nd M are statistically insignificant in all three sites (p > 0.05). The mean horizontal displacement achieved at the second molar and second premolar for retraction cord was 0.36 ± 0.07 mm, which was greater than MFC, 0.24 ± 0.06 mm (p = 0.001; 95 % CI). The T-test used for the time of placement between retraction cord and magic foam cord was significant (p < 0.001). The gingiva was observed for presence or absence of bleeding soon after retrieval of the retraction cord and the MFC.</div></div><div><h3>Conclusion</h3><div>Retraction cords provide greater horizontal displacement but are more time-consuming and traumatic compared to MFC, which is more time-efficient and less invasive. This highlights the need to balance efficacy and efficiency in clinical practice.</div></div>\",\"PeriodicalId\":16609,\"journal\":{\"name\":\"Journal of oral biology and craniofacial research\",\"volume\":\"15 5\",\"pages\":\"Pages 1103-1107\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-07-26\",\"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/S2212426825001605\",\"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/S2212426825001605","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Medicine","Score":null,"Total":0}
Comparative evaluation of gingival displacement and clinical efficacy using polyvinyl siloxane foam and retraction cord systems: A randomized controlled in vivo study
Every tooth in the arch and the soft tissues around the prepared tooth need to be replicated in the impression. To prevent tearing during impression removal, it is essential to ensure sufficient sulcus width. To date, mechanical, chemico-mechanical, electrosurgical, surgical, and laser methods have been used to accomplish gingival retraction. The purpose of both clinical and laboratory analysis of the efficacies of chemically impregnated retraction cord and polyvinyl siloxane foam retraction systems is based on the relative amount of vertical and horizontal gingival displacement, time of placement, and the presence or absence of bleeding.
Methods and materials
A total of 30 participants aged 20–40 years were enrolled in a randomized controlled trial and quality assessment was conducted according to the CONSORT checklist (CTRI/2022/10/046181). In a split-mouth design, retraction was done using 25 % aluminium sulfate-impregnated retraction cords and Magic FoamCord (MFC). The Mann-Whitney and T-tests were used for data analysis.
Result
Mann-Whitney Test concluded that for vertical gingival retraction cord and Magic foam at 2nd M are statistically insignificant in all three sites (p > 0.05). The mean horizontal displacement achieved at the second molar and second premolar for retraction cord was 0.36 ± 0.07 mm, which was greater than MFC, 0.24 ± 0.06 mm (p = 0.001; 95 % CI). The T-test used for the time of placement between retraction cord and magic foam cord was significant (p < 0.001). The gingiva was observed for presence or absence of bleeding soon after retrieval of the retraction cord and the MFC.
Conclusion
Retraction cords provide greater horizontal displacement but are more time-consuming and traumatic compared to MFC, which is more time-efficient and less invasive. This highlights the need to balance efficacy and efficiency in clinical practice.
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.