The Effect of the Dental Operating Microscope on the Outcome of Nonsurgical Root Canal Treatment: A Retrospective Case-control Study

Khalighinejad, Navid; Aminoshariae, Anita; Kulild, James C.; Williams, Kristin A.; Wang, Jeannie; Mickel, Andre

doi:10.1016/j.joen.2017.01.015

Cited by 51 publications

(41 citation statements)

References 19 publications

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“…These findings reinforce the need for clinicians to appreciate that maxillary molars normally have four canals and efforts should be made towards locating the MB2 canal during treatment/retreatment. In this regard, use of the operating microscope has been reported to considerably increase detection of the MB2 canal (Baldassari-Cruz et al 2002, Buhrley et al 2002, Khalighinejad et al 2017. In one of these studies (Buhrley et al 2002), the MB2 was located in 57% of the cases when the clinician used a microscope, but only in 18% cases when no magnification was used.…”

Section: Discussionmentioning

confidence: 99%

Association between missed canals and apical periodontitis

et al. 2018

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Aim To evaluate the frequency of post‐treatment apical periodontitis associated with root filled teeth with at least one untreated root canal. Methodology Eight hundred and seven cone beam computed tomography images containing at least one root filled tooth were selected from a collection of 1543 images from Brazilian individuals. Scans were taken using ICAT Classic devices (Imaging Sciences, Hatfield, PA, USA) in a private oral radiology clinic from January to April 2015. All root filled teeth were analysed for the presence of missed canals and apical periodontitis. The chi‐square and odds ratio tests were used to verify if there were an association and risk relationship between the occurrence of untreated canals and apical periodontitis. Results A total of 2294 teeth with evidence of root fillings were identified. Two hundred and eighty‐one teeth had at least one untreated missed canal (12%). The frequency of apical periodontitis in teeth with at least one untreated canal was significantly greater in comparison to teeth with all canals treated (274/281, 98% versus 1736/2013, 86%) (P < 0.01). The odds for apical periodontitis to be present was 6.25 times greater for teeth with an untreated canal. The mesiobuccal roots of maxillary first molars had the greatest frequency of untreated canals (114/154, 74%), with the second mesiobuccal canal being the most frequently missed (n = 106/114, 93%). Conclusion Root filled teeth with at least one missed canal had a high prevalence of post‐treatment apical periodontitis.

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Section: Discussionmentioning

confidence: 99%

Association between missed canals and apical periodontitis

et al. 2018

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“…A recent study demonstrated that the higher presence of apical lesions was associated with missing MB2 canals in treatments performed without the use of a dental operating microscope. 43 …”

Section: Retreatmentsmentioning

confidence: 99%

Locating the second mesiobuccal canal in maxillary molars: challenges and solutions

Coelho¹,

Lacerda²,

Silva³

et al. 2018

CCIDE

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The second mesiobuccal canal in mesiobuccal roots in maxillary molars is a common finding in root canal treatments. Failure on the location of these canals is associated with a high rate of unsuccessful treatments of maxillary molars. Its prevalence has been assessed in several in vitro and in vivo studies, presenting variations according to the methodology applied, along with the population of interest. While the anatomy of these teeth is well defined in micro-computed tomography studies, the clinical management is a great challenge for the practitioner. The use of a dental operating microscope has rendered a better clinical outcome when considering the location and treatment of this canal. On the other hand, cone-beam computed tomography use is still controversial in the efficacy of MB2 canal location. The association of a dental operating microscope with troughing performed with ultrasonic tips is an essential step in this location. Moreover, sodium fluorescein might be applied for root canal location. Due to the high rate of unsuccessful cases when the MB2 canal is not initially found, several cases are performed aiming to address the cases of missed MB2 canals. Therefore, the clinician should discuss the best possible approach, whether surgical or clinical. This article presents an overview of the importance of the MB2 canal on the outcomes of root canal treatments of maxillary molars. Solutions based in current literature will be presented accordingly.

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“…Cone beam computed tomography (CBCT) and periapical digital radiography are not precise methods to detect these perforations (Garbacea et al, 2012). In an attempt to improve surgical outcomes and reduce complications, the operating microscope was introduced to dentistry (Bonsor, 2015;Khalighinejad et al, 2017;Setzer, Kohli, Shah, Karabucak, & Kim, 2012;Wang, Zhang, Wang, Jiang, & Liang, 2017). This microscope level of magnification (≥6-8×) combined with a coaxial illumination enhances the operator's vision during surgery, thus reducing potential post-surgical complications (Bonsor, 2015;Mamoun, 2016).…”

Section: Introductionmentioning

confidence: 99%

Microscope and micro‐camera assessment of Schneiderian membrane perforation via transcrestal sinus floor elevation: A randomized ex vivo study

Gargallo‐Albiol

Sinjab

Barootchi

et al. 2019

Clinical Oral Implants Res

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Objective We sought to assess the effectiveness of using a microscope and non‐invasive camera for assessing sinus membrane perforations during transcrestal sinus floor elevation (TSFE). Materials and methods Five fresh human cadaver heads corresponding to eight maxillary sinuses (six bilateral and two unilateral) underwent 4 TSFEs per sinus (a total of 32 single site elevations). Each elevation was randomly assigned to receive a three or six mm membrane elevation height (MEH). A microscope and micro‐camera were used to assess the sinus membrane perforation. Afterwards, radiological and clinical membrane perforation assessments were performed. The statistical analysis results are expressed using the means, standard deviations, range values of the residual ridge height (RRH), residual ridge width (RRW), sinus membrane thickness (SMT) and incidence of perforation (IoP). Generalized linear methods were used to test for the correlation of RRH and MEH to the microscope and micro‐camera perforation assessments and the correlation of microscope and micro‐camera assessments with the post‐operative CBCT and crestal liquid evaluation. Results The cumulative percentage of IoP was 40.62%, (23.07% with 3 mm MEH, and 76.92% with 6 mm MEH, p < 0.05). The perforation assessed using either the microscope or micro‐camera coincided with the post‐operative CBCT and crestal liquid assessment in 87.55% sites. No significant correlation was found between the microscope or micro‐camera assessments with RRH or MEH. Conclusion Application of a microscope and micro‐camera during transcrestal sinus floor elevation may allow the detection of the integrity of the Schneiderian membrane with greater than 85% accuracy in this ex vivo model.

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The Effect of the Dental Operating Microscope on the Outcome of Nonsurgical Root Canal Treatment: A Retrospective Case-control Study

Cited by 51 publications

References 19 publications

Association between missed canals and apical periodontitis

Association between missed canals and apical periodontitis

Locating the second mesiobuccal canal in maxillary molars: challenges and solutions

Microscope and micro‐camera assessment of Schneiderian membrane perforation via transcrestal sinus floor elevation: A randomized ex vivo study

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