{"title":"Laser-assisted Root Canal Filling Removal of Lower Incisors - A Micro-CT Study.","authors":"Violeta Dogandzhiyska, Irina Tsenova-Ilieva, Miriana Raykovska, Emilia Karova","doi":"10.4103/jispcd.jispcd_198_23","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>To compare the efficiency of root canal filling removal from oval-shaped root canals with high-energy Er:YAG laser and additional instrumentation with a rotary Ni-Ti XP-Endo Finisher R system.</p><p><strong>Materials and methods: </strong>The <i>in vitro</i> study was accomplished on 12 freshly extracted single-rooted mandibular incisors with one straight oval-shaped root canal, shaped with XP-Endo Shaper 30/.04 and obturated by using the warm vertical condensation technique subjected to further endodontic orthograde retreatment. Group 1: the first retreatment was carried out using a high-energy Er:YAG laser (<i>n</i> = 12). Group 2: the additional retreatment of the same specimens was performed with the XP-Endo Finisher-R system (<i>n</i> = 12). The effectiveness of the retreatment techniques was evaluated by a threefold micro-CT examination. The amount of the remaining root canal filling material was analyzed by Mann-Whitney <i>U</i> test and Friedman tests.</p><p><strong>Results: </strong>A significant decrease in the quantity of the root canal filling was found following the first and after the second retreatment, compared to the initial values in all examined sections (<i>P</i> < 0.001). Within groups, additional application of the Ni-Ti system resulted in no significant removal of the filling materials (<i>P</i> > 0.05).</p><p><strong>Conclusions: </strong>None of the systems resulted in complete root canal filling removal. Despite the improved results after the application of the supplementary retreatment protocol, none of the root canal walls were completely clean in the apical area. The high-energy Er:YAG laser and XP-Endo Finisher R rotary system can be successfully used in endodontic orthograde retreatment under relevant operating parameters.</p>","PeriodicalId":47247,"journal":{"name":"Journal of International Society of Preventive and Community Dentistry","volume":"14 4","pages":"325-331"},"PeriodicalIF":1.4000,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11458087/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of International Society of Preventive and Community Dentistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/jispcd.jispcd_198_23","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/7/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
Abstract
Aim: To compare the efficiency of root canal filling removal from oval-shaped root canals with high-energy Er:YAG laser and additional instrumentation with a rotary Ni-Ti XP-Endo Finisher R system.
Materials and methods: The in vitro study was accomplished on 12 freshly extracted single-rooted mandibular incisors with one straight oval-shaped root canal, shaped with XP-Endo Shaper 30/.04 and obturated by using the warm vertical condensation technique subjected to further endodontic orthograde retreatment. Group 1: the first retreatment was carried out using a high-energy Er:YAG laser (n = 12). Group 2: the additional retreatment of the same specimens was performed with the XP-Endo Finisher-R system (n = 12). The effectiveness of the retreatment techniques was evaluated by a threefold micro-CT examination. The amount of the remaining root canal filling material was analyzed by Mann-Whitney U test and Friedman tests.
Results: A significant decrease in the quantity of the root canal filling was found following the first and after the second retreatment, compared to the initial values in all examined sections (P < 0.001). Within groups, additional application of the Ni-Ti system resulted in no significant removal of the filling materials (P > 0.05).
Conclusions: None of the systems resulted in complete root canal filling removal. Despite the improved results after the application of the supplementary retreatment protocol, none of the root canal walls were completely clean in the apical area. The high-energy Er:YAG laser and XP-Endo Finisher R rotary system can be successfully used in endodontic orthograde retreatment under relevant operating parameters.
期刊介绍：
It is a journal aimed for research, scientific facts and details covering all specialties of dentistry with a good determination for exploring and sharing the knowledge in the medical and dental fraternity. The scope is therefore huge covering almost all streams of dentistry - starting from original studies, systematic reviews, narrative reviews, very unique case reports. Journal scope is not limited to these subjects and is more wider covering all specialities of dentistry follows: -Preventive and Community dentistry (Dental public health)- Endodontics- Oral and maxillofacial pathology- Oral and maxillofacial radiology- Oral and maxillofacial surgery (also called oral surgery)- Orthodontics and dentofacial orthopedics- Periodontology (also called periodontics)- Pediatric dentistry (also called pedodontics)- Prosthodontics (also called prosthetic dentistry)- Oral medicine- Special needs dentistry (also called special care dentistry)- Oral Biology- Forensic odontology- Geriatric dentistry or Geriodontics- Preventive and Social Medicine (Public health)- Our journal appreciates research articles pertaining with advancement of dentistry, preventive and community dentistry including oral epidemiology, oral health services research, oral health education and promotion, behavioral sciences related to dentistry, dental jurisprudence, ethics and oral health, economics, and quality assessment, recent advances in preventive dentistry and community dentistry.
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