Three-rooted permanent mandibular first molars of Asian and black groups in the Middle East

Younes, Salwa Abdelsamad; Al‐Shammery, Abdullah R.; El-Angbawi, Mohammad Farouk

doi:10.1016/0030-4220(90)90276-x

Cited by 58 publications

(32 citation statements)

References 6 publications

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“…7,8 Sperber and Moreau 9 found the third root anomaly on the buccal aspect. Variations in root and canal morphology tend to show racial or ethnic differences, [10][11][12][13] suggesting that they are genetically determined. 8,11,[14][15][16] It is important to be aware of the frequency of racially determined root canal variations for endodontic purposes.…”

Section: Introductionmentioning

confidence: 97%

Root and canal morphology of mandibular first and second permanent molar teeth in a Ugandan population

et al. 2009

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We investigated root and canal morphology of permanent mandibular molar teeth in a Ugandan population. Mandibular first (n = 224) and second (n = 223) molars were collected from patients visiting dental clinics in Kampala and prepared by a clearing technique. An endodontic access cavity was prepared in each tooth. The teeth were consecutively immersed in 5% sodium hypochlorite, 10% nitric acid, and 99% methyl salicylate. India ink was coronally injected into the pulp chamber and withdrawn apically by suction. The teeth were viewed under a magnifying lens and the numbers of root canals and their configurations, lateral canals, intercanal communications, and multiple apical foramina were recorded, along with the number of roots and their morphology. Student's t test for independent samples was used to assess significant differences in the root canal system. All specimens were two-rooted with one mesial and one distal root. Root fusion was more frequent in the second than in the first molar: 3.2% versus 0.4%. Vertucci type IV canal configuration was most frequently recorded in the mesial root of the first (44.6%) and second (49.8%) molars. Type 1 canal configuration was predominant in the distal root in first (84.8%) and second (94.2%) molars. Multiple apical foramina were more frequent in the first than in the second molar, as were intercanal communications and lateral canals. Type I and IV canal configurations were predominant in the distal and mesial roots, respectively, of both the first and second molars.

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Section: Introductionmentioning

confidence: 97%

Root and canal morphology of mandibular first and second permanent molar teeth in a Ugandan population

et al. 2009

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“…T he presence of the distolingual (DL) root in permanent mandibular first molars is considered as a normal morphologic variation for Mongoloid populations because of the high prevalence, which lies in the range of 5% to 40% (1)(2)(3)(4)(5), whereas in white or black populations, the prevalence is often less than 5% (6)(7)(8)(9). Most of the previous studies on detection of this trait used extracted teeth or periapical radiographs.…”

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Root Canal Morphology of Permanent Three-rooted Mandibular First Molars: Part III—An Odontometric Analysis

Zhou

Ding

et al. 2011

Journal of Endodontics

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“…Its frequency is lower than 5% in white and African populations (3)(4)(5)(6). In Asian populations, the prevalence of three-rooted mandibular first molars lies in the range of 5%-40%, and it has been considered as a racial characteristic (7)(8)(9)(10).…”

mentioning

confidence: 98%

Root Canal Morphology of Permanent Three-rooted Mandibular First Molars: Part II—Measurement of Root Canal Curvatures

Lü

Wang

et al. 2010

Journal of Endodontics

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Three-rooted permanent mandibular first molars of Asian and black groups in the Middle East

Cited by 58 publications

References 6 publications

Root and canal morphology of mandibular first and second permanent molar teeth in a Ugandan population

Root and canal morphology of mandibular first and second permanent molar teeth in a Ugandan population

Root Canal Morphology of Permanent Three-rooted Mandibular First Molars: Part III—An Odontometric Analysis

Root Canal Morphology of Permanent Three-rooted Mandibular First Molars: Part II—Measurement of Root Canal Curvatures

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