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Managing severe curvature of radix entomolaris: three‐dimensional analysis with cone beam computed tomography

Abella, F. ; Mercadé, M. ; Duran‐Sindreu, F. ; Roig, M.

International endodontic journal, 2011-09, Vol.44 (9), p.876-885 [Periódico revisado por pares]

Oxford, UK: Blackwell Publishing Ltd

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  • Título:
    Managing severe curvature of radix entomolaris: three‐dimensional analysis with cone beam computed tomography
  • Autor: Abella, F. ; Mercadé, M. ; Duran‐Sindreu, F. ; Roig, M.
  • Assuntos: anatomical variations ; Computed tomography ; Cone-Beam Computed Tomography ; Dental caries ; Dental Pulp Cavity - anatomy & histology ; Dental Pulp Cavity - surgery ; Dental roots ; Dentistry ; Female ; Fractures ; Humans ; imaging ; Mandible ; Middle Aged ; Molar - anatomy & histology ; Molar - surgery ; Molars ; Periodontitis ; Pulpitis - therapy ; Radiography ; radix entomolaris ; Risk assessment ; root canal curvature ; Root Canal Therapy - methods ; root canals ; Supernumerary ; Teeth ; Tooth Root - anatomy & histology ; Treatment Outcome
  • É parte de: International endodontic journal, 2011-09, Vol.44 (9), p.876-885
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
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    ObjectType-Case Study-2
    ObjectType-Feature-4
    ObjectType-Report-1
    ObjectType-Article-3
  • Descrição: Abella F, Mercadé M, Duran‐Sindreu F, Roig M. Managing severe curvature of radix entomolaris: three‐dimensional analysis with cone beam computed tomography. International Endodontic Journal, 44, 876–885, 2011. Aim  To present a case of a mandibular first molar with an additional distolingual root [radix entomolaris (RE)] and to discuss the use of cone beam computed tomography (CBCT) for its identification and management during root canal treatment. Summary  A 52‐year‐old Caucasian woman was referred for root canal treatment of the right mandibular first molar (tooth 46). After clinical and radiographic examination, a symptomatic irreversible pulpitis was diagnosed. Three periapical radiographs with different horizontal angulations revealed the presence of an additional distolingual root. This extra root, termed RE, has an incidence of <5% in the Caucasian population. A CBCT examination was also taken, which revealed a severe root canal curvature, especially in the middle third, of this supernumerary root. CBCT provided more accurate information in terms of RE inclination and root canal curvature before commencing root canal treatment. The conventional access opening was modified into a more trapezoidal cavity, and five root canals were found. All canals were instrumented with new nickel–titanium (NiTi) files to reduce the risk of fractured instruments. After preparation, the root canals were filled using thermoplastified techniques. The 1‐year follow‐up periapical radiographs and CBCT images revealed a continuous periodontal space with no signs of apical periodontitis. Key learning points  •  Cone beam computed tomography imaging is useful in identifying the root canal system and the surrounding structures. •  An accurate detection of supernumerary roots, such as RE, can avoid complications during and after root canal treatment. •  The analysis of root canal curvature is important because instrument fracture has been linked to angle and radius of curvature. •  The use of new instruments can reduce the incidence of instrument fracture.
  • Editor: Oxford, UK: Blackwell Publishing Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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