Jörg Philipp Tchorz, Nathalie Konstantiniuk, Johann Julian Alfons Sistig, Wilhelm Frank, Maria Lessani, Constantin von See, Benedikt Schneider
{"title":"Ideal Horizontal X-Ray Beam Angulation for Maxillary Molars. A Retrospective Clinical Study Using Cone-Beam Computed Tomography.","authors":"Jörg Philipp Tchorz, Nathalie Konstantiniuk, Johann Julian Alfons Sistig, Wilhelm Frank, Maria Lessani, Constantin von See, Benedikt Schneider","doi":"10.1111/aej.12970","DOIUrl":null,"url":null,"abstract":"<p><p>The aim of this study was to analyse cone-beam computed tomography (CBCT) images to determine the ideal horizontal X-ray beam angulations for maxillary first and second molars. CBCT scans from 85 patients were retrospectively analysed to measure the angles at which buccal root canals (MB, DB) of maxillary first (n = 170) and second (n = 157) molars superimpose the palatal one (P) at coronal and apical levels. The mean angles and standard deviations for both tooth types combined at which MB1 and MB2 overlap with P, as well as the angle at which DB overlaps with P, were 114.01° (±9.30), 119.47° (±11.05) and 87.48° (±12.02), respectively. Angles at coronal levels were higher for both tooth types and all canals. If maxillary molar teeth show no signs of tilt, rotation or unusual anatomy, a distal tube shift of > 18°, based on the orthoradial direction (90°), should be chosen to achieve ideal visual canal separation.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":" ","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Australian Endodontic Journal","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1111/aej.12970","RegionNum":4,"RegionCategory":"医学","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
The aim of this study was to analyse cone-beam computed tomography (CBCT) images to determine the ideal horizontal X-ray beam angulations for maxillary first and second molars. CBCT scans from 85 patients were retrospectively analysed to measure the angles at which buccal root canals (MB, DB) of maxillary first (n = 170) and second (n = 157) molars superimpose the palatal one (P) at coronal and apical levels. The mean angles and standard deviations for both tooth types combined at which MB1 and MB2 overlap with P, as well as the angle at which DB overlaps with P, were 114.01° (±9.30), 119.47° (±11.05) and 87.48° (±12.02), respectively. Angles at coronal levels were higher for both tooth types and all canals. If maxillary molar teeth show no signs of tilt, rotation or unusual anatomy, a distal tube shift of > 18°, based on the orthoradial direction (90°), should be chosen to achieve ideal visual canal separation.
期刊介绍：
The Australian Endodontic Journal provides a forum for communication in the different fields that encompass endodontics for all specialists and dentists with an interest in the morphology, physiology, and pathology of the human tooth, in particular the dental pulp, root and peri-radicular tissues.
The Journal features regular clinical updates, research reports and case reports from authors worldwide, and also publishes meeting abstracts, society news and historical endodontic glimpses.
The Australian Endodontic Journal is a publication for dentists in general and specialist practice devoted solely to endodontics. It aims to promote communication in the different fields that encompass endodontics for those dentists who have a special interest in endodontics.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
