Jenna Gaudio Edwards, John Nusstein, Melissa Drum, Sara Fowler, Al Reader
{"title":"三种方法去除弯曲下颌磨牙近中管氢氧化钙的显微计算机断层分析。","authors":"Jenna Gaudio Edwards, John Nusstein, Melissa Drum, Sara Fowler, Al Reader","doi":"10.1016/j.joen.2025.05.013","DOIUrl":null,"url":null,"abstract":"<p><strong>Introduction: </strong>The purpose of this study was to evaluate the efficacy of 3 irrigation techniques: standard syringe irrigation (SI), ProUltra PiezoFlow (CUI), and EdgeEndo Er,Cr:YSGG (LAI) laser in removing calcium hydroxide from the mesial canals of severely curved mandibular molars using micro-computed tomography (micro-CT) analysis.</p><p><strong>Methods: </strong>Mesial canals of 30 extracted human mandibular molar teeth were prepared to size 30/.04 taper or 35/.04 taper rotary instruments. Teeth were randomly assigned to the 3 experimental groups (n = 10) with evenly distributed degrees of curvature. Calcium hydroxide was placed into prepared canals and sealed for 14 days. A micro-CT scan was taken to determine calcium hydroxide paste volume in each tooth. Canals were irrigated utilizing the 3 techniques and re-scanned. Micro-CT volume and percent change of calcium hydroxide before and after irrigation were calculated and analyzed.</p><p><strong>Results: </strong>Calcium hydroxide paste remained in all groups after irrigation. The SI group removed -0.09% in the apical segment (0-3 mm) and 14% in the middle segment (3-6 mm). CUI removed 15% in the apical segment and 50% in the middle segment. LAI removed 49% in the apical segment and 72% in the middle segment.</p><p><strong>Conclusions: </strong>Irrigation with LAI removed significantly more calcium hydroxide in the middle and apical segments when compared to CUI and SI.</p>","PeriodicalId":15703,"journal":{"name":"Journal of endodontics","volume":" ","pages":"1053-1060"},"PeriodicalIF":3.6000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Micro-computed Tomographic Analysis of the Efficacy of 3 Techniques for Removal of Calcium Hydroxide from the Mesial Canals of Curved Mandibular Molars.\",\"authors\":\"Jenna Gaudio Edwards, John Nusstein, Melissa Drum, Sara Fowler, Al Reader\",\"doi\":\"10.1016/j.joen.2025.05.013\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Introduction: </strong>The purpose of this study was to evaluate the efficacy of 3 irrigation techniques: standard syringe irrigation (SI), ProUltra PiezoFlow (CUI), and EdgeEndo Er,Cr:YSGG (LAI) laser in removing calcium hydroxide from the mesial canals of severely curved mandibular molars using micro-computed tomography (micro-CT) analysis.</p><p><strong>Methods: </strong>Mesial canals of 30 extracted human mandibular molar teeth were prepared to size 30/.04 taper or 35/.04 taper rotary instruments. Teeth were randomly assigned to the 3 experimental groups (n = 10) with evenly distributed degrees of curvature. Calcium hydroxide was placed into prepared canals and sealed for 14 days. A micro-CT scan was taken to determine calcium hydroxide paste volume in each tooth. Canals were irrigated utilizing the 3 techniques and re-scanned. Micro-CT volume and percent change of calcium hydroxide before and after irrigation were calculated and analyzed.</p><p><strong>Results: </strong>Calcium hydroxide paste remained in all groups after irrigation. The SI group removed -0.09% in the apical segment (0-3 mm) and 14% in the middle segment (3-6 mm). CUI removed 15% in the apical segment and 50% in the middle segment. LAI removed 49% in the apical segment and 72% in the middle segment.</p><p><strong>Conclusions: </strong>Irrigation with LAI removed significantly more calcium hydroxide in the middle and apical segments when compared to CUI and SI.</p>\",\"PeriodicalId\":15703,\"journal\":{\"name\":\"Journal of endodontics\",\"volume\":\" \",\"pages\":\"1053-1060\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2025-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of endodontics\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1016/j.joen.2025.05.013\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/5/29 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of endodontics","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.joen.2025.05.013","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/5/29 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
Micro-computed Tomographic Analysis of the Efficacy of 3 Techniques for Removal of Calcium Hydroxide from the Mesial Canals of Curved Mandibular Molars.
Introduction: The purpose of this study was to evaluate the efficacy of 3 irrigation techniques: standard syringe irrigation (SI), ProUltra PiezoFlow (CUI), and EdgeEndo Er,Cr:YSGG (LAI) laser in removing calcium hydroxide from the mesial canals of severely curved mandibular molars using micro-computed tomography (micro-CT) analysis.
Methods: Mesial canals of 30 extracted human mandibular molar teeth were prepared to size 30/.04 taper or 35/.04 taper rotary instruments. Teeth were randomly assigned to the 3 experimental groups (n = 10) with evenly distributed degrees of curvature. Calcium hydroxide was placed into prepared canals and sealed for 14 days. A micro-CT scan was taken to determine calcium hydroxide paste volume in each tooth. Canals were irrigated utilizing the 3 techniques and re-scanned. Micro-CT volume and percent change of calcium hydroxide before and after irrigation were calculated and analyzed.
Results: Calcium hydroxide paste remained in all groups after irrigation. The SI group removed -0.09% in the apical segment (0-3 mm) and 14% in the middle segment (3-6 mm). CUI removed 15% in the apical segment and 50% in the middle segment. LAI removed 49% in the apical segment and 72% in the middle segment.
Conclusions: Irrigation with LAI removed significantly more calcium hydroxide in the middle and apical segments when compared to CUI and SI.
期刊介绍：
The Journal of Endodontics, the official journal of the American Association of Endodontists, publishes scientific articles, case reports and comparison studies evaluating materials and methods of pulp conservation and endodontic treatment. Endodontists and general dentists can learn about new concepts in root canal treatment and the latest advances in techniques and instrumentation in the one journal that helps them keep pace with rapid changes in this field.
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