Evaluation of Cone Beam Computed Tomography Resolution, 3D Printing Resolution and Drilling Depth on Drilling Accuracy in Guided Endodontics: An In-Vitro Study.
{"title":"Evaluation of Cone Beam Computed Tomography Resolution, 3D Printing Resolution and Drilling Depth on Drilling Accuracy in Guided Endodontics: An In-Vitro Study.","authors":"Marine Hénaut, Maarten Meire, Jérôme Vandomme, Lieven Robberecht","doi":"10.14744/eej.2024.57441","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>The aim of this study was to evaluate the influence of cone-beam computed tomography (CBCT) resolution, 3D printing resolution, and drilling depth on drilling accuracy in guided endodontic access.</p><p><strong>Methods: </strong>Fifty-six printed canines were designed, fabricated, and mounted in maxillary arch models. Preoperative CBCT and 3D surface scan were matched and used to design a surgical guide with different planning parameters: 1) reference (high-resolution CBCT (80 µm) and 3D printing (50 µm), shallow drilling (14 mm)), 2) low-resolution CBCT (120 µm), 3) low-resolution 3D printing (100 µm) and 4) deep drilling (high-resolution CBCT (80 µm) and 3D printing (50 µm), deep drilling (21 mm)). Guided access into the printed canines was performed in a simulated clinical setting. A postoperative CBCT was matched with the planning data in order to determine the angular and linear (total, mesiodistal, buccolingual and depth) deviation between the planned and performed cavities. Mann-Whitney test was used to analyse differences between the reference group and each test group.</p><p><strong>Results: </strong>Angular, total linear and buccolingual deviations were significantly higher in the low-resolution CBCT group than in the reference group (median: 3.10° and 2.0° (p<0.01), 1.41 mm and 1.06 mm (p<0.05) and 0.77 mm and 0.41 mm (p<0.05), respectively). Depth deviation was significantly higher in the low-resolution 3D printing group than in the reference group (median: 0.90 mm and 0.45 mm (p<0.01), respectively). No other significant differences between the groups were noted (p>0.05).</p><p><strong>Conclusion: </strong>Higher CBCT resolution resulted in lower angular and total linear deviation during guided endodontic access. Higher 3D printing resolution yielded lower vertical linear deviation. (EEJ-2024-05-086).</p>","PeriodicalId":11860,"journal":{"name":"European Endodontic Journal","volume":"10 2","pages":"127-133"},"PeriodicalIF":1.6000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11971698/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Endodontic Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14744/eej.2024.57441","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
Abstract
Objective: The aim of this study was to evaluate the influence of cone-beam computed tomography (CBCT) resolution, 3D printing resolution, and drilling depth on drilling accuracy in guided endodontic access.
Methods: Fifty-six printed canines were designed, fabricated, and mounted in maxillary arch models. Preoperative CBCT and 3D surface scan were matched and used to design a surgical guide with different planning parameters: 1) reference (high-resolution CBCT (80 µm) and 3D printing (50 µm), shallow drilling (14 mm)), 2) low-resolution CBCT (120 µm), 3) low-resolution 3D printing (100 µm) and 4) deep drilling (high-resolution CBCT (80 µm) and 3D printing (50 µm), deep drilling (21 mm)). Guided access into the printed canines was performed in a simulated clinical setting. A postoperative CBCT was matched with the planning data in order to determine the angular and linear (total, mesiodistal, buccolingual and depth) deviation between the planned and performed cavities. Mann-Whitney test was used to analyse differences between the reference group and each test group.
Results: Angular, total linear and buccolingual deviations were significantly higher in the low-resolution CBCT group than in the reference group (median: 3.10° and 2.0° (p<0.01), 1.41 mm and 1.06 mm (p<0.05) and 0.77 mm and 0.41 mm (p<0.05), respectively). Depth deviation was significantly higher in the low-resolution 3D printing group than in the reference group (median: 0.90 mm and 0.45 mm (p<0.01), respectively). No other significant differences between the groups were noted (p>0.05).
Conclusion: Higher CBCT resolution resulted in lower angular and total linear deviation during guided endodontic access. Higher 3D printing resolution yielded lower vertical linear deviation. (EEJ-2024-05-086).