جستجوی مقالات مرتبط با کلیدواژه « Mesiobuccal root » در نشریات گروه « پزشکی »
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زمینه و هدف
آناتومی مولر های ماگزیلا خیلی پیچیده است و درمان ریشه برای این گروه خاص از دندان ها یک چالش بزرگ برای دندان پزشک ها محسوب می گردد. با توجه به محدودیت های تکنیک های کانونشنال در پیدا کردن کانال دوم مزیوباکال (MB-2) و تفاوت های آناتومیک مشاهده شده در قومیت های مختلف، این مطالعه با هدف تعیین آناتومی کانال ریشه مزیوباکال در دندان های مولر اول دایمی ماگزیلا با استفاده از CBCT (Cone-beam computed tomography) در شهر رفسنجان انجام شد.
مواد و روش هادر این مطالعه توصیفی، تعداد 41 کلیشه رادیوگرافیPromax 3D CBCT از بیماران شهر رفسنجان در سال 1397 مورد بررسی قرار گرفت. جهت بررسی مورفولوژی ریشه، بعد از به دست آوردن تصاویر multiple planar reformation (MPR) در مقاطع ساژیتال و آگزیال، ارزیابی برحسب طبقه بندی ورتوچی (Vertucci) انجام شد. داده ها با استفاده از آزمون مجذور کای و یا آزمون دقیق فیشر تجزیه و تحلیل شد.
یافته هااز 41 کلیشه مورد بررسی، در 15 کلیشه (6/36%) یک کانال و در 26 کلیشه دیگر (4/63%) دو کانال در ریشه مزیوباکال مشاهده شد. در میان ریشه های حاوی دو کانال، تایپ II طبقه بندی ورتوچی، رایج ترین تایپ مشاهده شده بود. لازم به ذکر است که ارتباط معنی داری بین تعداد کانال ها و هم چنین تایپ کانال ها با جنسیت (به ترتیب، 495/0=P و 583/0=P) و کوادورانت دندان (به ترتیب، 133/0=P و 669/0=P) مشاهده نشد.
نتیجه گیریبا توجه به نتایج مطالعه حاضر و میزان دو کانال بودن ریشه مزیوباکال، می توان گفت که تهیه کلیشه CBCT قبل از درمان ریشه در دندان مولر اول ماگزیلا جهت بررسی وجود و تعیین نوع کانال MB-2 می تواند کمک کننده باشد.
کلید واژگان: CBCT, مولر اول ماگزیلا, ریشه مزیوباکال, کانال مزیوباکال دوم}Background and ObjectivesThe anatomy of maxillary molars is very complicated and root canal therapy for this specific group of teeth is a major challenge for dentists. Given the limitations of conventional techniques for finding the second mesiobuccal canal (MB-2) and anatomical differences observed in different ethnicities, this study aimed to determine the anatomy of mesiobuccal root canal in maxillary first permanent molars using CBCT (Cone-beam computed tomography) in Rafsanjan city.
Materials and MethodsIn this descriptive study, 41 promax 3D CBCT radiographs of patients in Rafsanjan in 2018 were studied. To investigate the root morphology, after obtaining multiple planar reformation (MPR) images in sagittal and axial planes, evaluation was done by Vertucci classification. Data were analyzed using chi-square test or Fisher’s exact test.
ResultsOf the 41 studied films, one canal was observed in mesiobuccal root in 15 (36.6%) films and two canals in the others 26 (63.4%) films. Among the roots containing two canals, second type of Vertucci classification was the most common type observed. It should be noted that there was no significant relationship between the number of canals and also the type of canals and gender (p=0.495 and p=0.583, respectively) and with quadrant of the tooth (respectively p=0.133 and p=0.669).
ConclusionAccording to the results of the present study and the amount of two-canal mesiobuccal roots, it can be said that the preparation of CBCT film before root canal therapy in maxillary first molar is necessary to verify the existence and type of MB-2 canal.
Keywords: CBCT, Maxillary first molar, Mesiobuccal root, Second mesiobuccal canal} -
IntroductionAn important issue in treatment planning and endodontic treatment is to deal with sophisticated internal dental morphology. Deviations from normal anatomy in maxillary molars are usually related to the number of canals in mesiobuccal root. Although unusual anatomy is not uncommon in maxillary molars, the occurrence of 3 separate canals with distinct orifices and apical foramina (as we see in this case) is extremely rare. Getting familiar with this unusual anatomy helps clinicians to treat patients more efficiently with less chance of failure.Case PresentationThis case report describes a successful endodontic management of an uncommon variation of the maxillary first molar with a third mesiobuccal canal. The tooth had a deep carious lesion and the pulp was irreversibly damaged causing pain on the left side of the face. The periodontium was normal. The tooth received root canal treatment and 400 mg ibuprofen was prescribed every 6 hours for 2 to 3 days. The patient remained asymptomatic and the 3-month follow-up radiograph revealed normal periodontium.ConclusionsInability to identify and treat additional canals that are very common in the MB root of maxillary first molar could lead to treatment failure.Keywords: Root canal therapy, Maxillary first molar, Dental pulp cavity, Additional canals, Mesiobuccal root}
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IntroductionThe second canal of the mesiobuccal root (MB2) of the maxillary first molars (MFM) is difficult to detect in conventional radiographs and can be a major cause of failure in endodontic treatments. The aim of this study was to investigate the prevalence and anatomy of the MB2 by using high-resolution cone-beam computed tomography (CBCT).
Methods and Materials: Three radiologists examined 414 high-resolution CBCTs. Of these, the CBCTs of 287 patients (mean age 49.43±16.76) who had at least one MFM were selected, making a total of 362 teeth. Prevalence and its relation with gender and age of the patients, side of the tooth, and Vertuccis classification were analyzed. Data were statistically analyzed (PResultsA total of 68.23% of the teeth exhibited the MB2. The presence of the MB2 was equivalent in both genders and significantly higher in younger patients. There was no correlation between the presence of the MB2 in relation to both the sides of the MFM and the FOV size. Smaller FOV recognized higher Vertuccis grades.ConclusionsIt was concluded that the prevalence of the MB2 canal in maxillary first molars in this Brazilian population examined with high-resolution CBTCs is 68.23%, being more prevalent in young patients. Gender and the side examined are no factors for determining the presence of MB2. Although the both FOVs of the high-resolution CBTCs (FOV 8 and 5) detect the MB2 canal, smaller FOV (FOV 5) is more accurate in the analysis of the internal anatomy of such root canals, according to the Vertucci´s classification.Keywords: Cone-beam Computed Tomography, High Resolution, Maxillary First Molar, Mesiobuccal Root, High Resolution}
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