Outcomes of root resection therapy in maxillary molars: a 1－8 years retrospective study

Background Reciproc instruments are the only contemporary root canal instruments where glide path preparation is no longer strictly demanded by the manufacturer. As the complete preparation of root canals is associated with success in endodontic treatment we wanted to assess the ability and find predictors for Reciproc instruments to reach full working length (RFWL) in root canals of maxillary molars in primary root canal treatment (1°RCTx) and retreatment (2°RCTx) cases. Methods This retrospective study evaluated 255 endodontic treatment cases of maxillary molars. 180 were 1°RCTx and 75 2°RCTx. All root canals were prepared with Reciproc instruments. The groups were compared and in a binary logistic regression model predictors for RFWL were evaluated. Results A total of 926 root canals were treated with Reciproc without glide path preparation. This was possible in 885 canals (95.6%). In 1°RCTx cases 625 of 649 (96.3%) canals were RFWL and in 2°RCTx cases 260 of 277 (93.9%). In second and third mesiobuccal canals (MB2/3) 90 out of 101 (89.1%) were RFWL with Reciproc in 1°RCTx and in the 2°RCTx treatment group 49 out of 51 cases (96.1%). In mesio-buccal (MB1) canals “2°RCTx” was identified as negative predictor for RFWL (OR 0.24 (CI [0.08–0.77])). In MB2/3 canals full working length was reached less often (OR 0.04 (CI [0.01–0.31])) if the tooth was constricted and more often if MB2/3 and MB1 canals were convergent (OR 4.60 (CI [1.07–19.61])). Discussion Using Reciproc instruments, the vast majority of root canals in primary treatment and retreatment cases can be prepared without glide path preparation.

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Cone Beam Computed Tomography of Mesiobuccal Root and Canal Morphology of Maxillary Molars in Delhi-NCR Population- A Retrospective Study

JOURNAL FOR CLINICAL AND DIAGNOSTIC RESEARCH ◽

10.7860/jcdr/2021/49780.15364 ◽

2021 ◽

Author(s):

Jaynit Tandon ◽

Sonali Taneja ◽

Vidhi Kiran Bhalla ◽

Akshay Rathore

Keyword(s):

Computed Tomography ◽

Retrospective Study ◽

Cone Beam Computed Tomography ◽

Anatomic Variation ◽

Cone Beam ◽

Type I ◽

Type Ii ◽

Type Iv ◽

Maxillary Molars ◽

Canal Morphology

Introduction: Adequate knowledge of the anatomic variation and root canal morphology is paramount for long term endodontic success. The presence of two canals in Mesiobuccal (MB) root is commonly associated with maxillary molars in various populations. Aim: To retrospectively evaluate the prevalence of a second mesiobuccal canal (MB2) in maxillary first and second molars in Delhi-National Capital Region (NCR) population using Cone Beam Computed Tomography (CBCT) analysis. Materials and Methods: This retrospective study evaluated the records of complete maxillary CBCT scans of 204 maxillary first and second molars from January 2016 till May 2019 from different CBCT centres in Delhi-NCR region to determine the anatomy and morphology in June 2019. The prevalence of second MB2 canals was recorded and associated with age, gender and symmetry. The z-test for proportions was used to assess the differences among the subgroups. Results: The number of roots in 204 teeth in both maxillary molars were determined. The prevalence of 3-rooted configuration was 98.55% in maxillary first molars and 79.4% in maxillary 2nd molars. Also, in maxillary 2nd molars, 7.4% were single rooted and 13.2% had 2-rooted configuration. Three rooted configuration and variable canal number was commonly reported in maxillary molars. Prevalence of MB2 canal was 87.2% in maxillary 1st molars and 64.2% in maxillary 2nd molars. Also, the prevalence was 87.2% bilaterally in maxillary first molars and 65.7% on the right and 53.9% on the left in maxillary second molars respectively. Type IV canal configuration was most prevalent in 44.60% of maxillary first molars and type 1 configuration (35.78%) for the maxillary second molars. Conclusion: Prevalence of MB2 canals in maxillary first and second molars was found to be high in North Indian population and the clinician should suspect its presence in all cases. Prevalence of MB2 had bilaterally symmetrical distribution without any association with age or gender. The MB roots were more likely to exhibit type IV and type II canal configurations in maxillary first molars and type I and type II configurations in second molars.

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A Cone Beam Computed Tomography (CBCT) evaluation of MB2 canals in endodontically treated permanent maxillary molars. A retrospective study in Indian population

Journal of Clinical and Experimental Dentistry ◽

10.4317/jced.52716 ◽

2016 ◽

pp. 0-0

Author(s):

H Shetty ◽

S Sontakke ◽

F Karjodkar ◽

P Gupta ◽

A Mandwe ◽

...

Keyword(s):

Computed Tomography ◽

Retrospective Study ◽

Cone Beam Computed Tomography ◽

Indian Population ◽

Cone Beam ◽

Maxillary Molars

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Associations between Periapical Health of Maxillary Molars and Mucosal Thickening of Maxillary Sinuses in Cone-beam Computed Tomographic Images: A Retrospective Study

Journal of Endodontics ◽

10.1016/j.joen.2019.12.004 ◽

2020 ◽

Vol 46 (3) ◽

pp. 397-403 ◽

Cited By ~ 2

Author(s):

Merve Sakir ◽

Sebnem Ercalik Yalcinkaya

Keyword(s):

Retrospective Study ◽

Cone Beam ◽

Tomographic Images ◽

Computed Tomographic ◽

Maxillary Molars ◽

Mucosal Thickening ◽

Maxillary Sinuses

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Detection of Mesiobuccal Canal in Maxillary Molars and Distolingual Canal in Mandibular Molars by Dental CT: A Retrospective Study of 100 Cases

International Journal of Dentistry ◽

10.1155/2010/291276 ◽

2010 ◽

Vol 2010 ◽

pp. 1-6 ◽

Cited By ~ 4

Author(s):

Sushma Rathi ◽

Jayaprakash Patil ◽

Prashant P. Jaju

Keyword(s):

Retrospective Study ◽

Diagnostic Tool ◽

Age Group ◽

Dental Ct ◽

Mandibular Molars ◽

Maxillary Molars ◽

Important Diagnostic Tool ◽

Root Canal Morphology ◽

Distolingual Canal ◽

Canal Morphology

Objective. To detect presence of MB2 canal in maxillary molars and distolingual canal in mandibular molars by Dental CT.Material and Methods. A retrospective study of 100 Dental CTs was done. Axial and paraxial images obtained were used to assess the presence of MB2 canal in maxillary molars and distolingual canal in mandibular molars.Results. The youngest patient was of 11 years while the eldest patient was of 77 years. Males were 58 in number and females were 42 in number. MB2 canals were present in 57 patients and distolingual canal was present in 18 patients. Maximum MB2 canals were present in age group between 51 and 60 years, while distolingual canals were present in age group of 21–30 years.Conclusion. Dental CT allows adequate visualization of variation in root canal morphology and can be important diagnostic tool for successful endodontic therapy.

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