Letícia F Haas1, Kamile Dutra1, André Luís Porporatti2, Luis A Mezzomo3, Graziela De Luca Canto4,5, Carlos Flores-Mir6, Márcio Corrêa7. 1. 1 Postgraduate Program in Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil. 2. 2 Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil. 3. 3 Brazilian Centre Evidence-based of Research, Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil. 4. 4 Brazilian Centre Evidence-based of Research, Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil. 5. 5 School of Dentistry, Faculty of Medicine and Dentistry University of Alberta, Canada. 6. 6 Department of Dentistry, Faculty of Medicine and Dentistry University of Alberta, Canada. 7. 7 Department of Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil.
Abstract
OBJECTIVES: To investigate the anatomical variations of the mandibular canal through assessment in situ, panoramic radiography, CT or CBCT and assess their frequency. METHODS: Articles were selected from databases (Cochrane Library, LILACS, ProQuest, PubMed, Scopus, Web of Science and Google Scholar), articles without limitations of language, in which the main objective was to evaluate the frequency of bifurcation of the mandibular canal through assessment in situ, panoramic radiography, CT or CBCT were selected. A meta-analysis of prevalence using random effects was performed. RESULTS: Using a selection process in two phases, 15 articles were identified, and a meta-analysis was conducted. The results from these meta-analyses showed that the overall prevalence of anatomical variations for in situ studies was 6.46%, and through assessment of panoramic radiography and CT or CBCT the overall prevalence shown was 4.20% and 16.25%, respectively. CONCLUSIONS: There are two types of variations of the mandibular canal: the retromolar canal and bifid mandibular canal. The frequency variations through assessing in situ, panoramic radiography and CT or CBCT were 6.46%, 4.20% and 16.25%, respectively.
OBJECTIVES: To investigate the anatomical variations of the mandibular canal through assessment in situ, panoramic radiography, CT or CBCT and assess their frequency. METHODS: Articles were selected from databases (Cochrane Library, LILACS, ProQuest, PubMed, Scopus, Web of Science and Google Scholar), articles without limitations of language, in which the main objective was to evaluate the frequency of bifurcation of the mandibular canal through assessment in situ, panoramic radiography, CT or CBCT were selected. A meta-analysis of prevalence using random effects was performed. RESULTS: Using a selection process in two phases, 15 articles were identified, and a meta-analysis was conducted. The results from these meta-analyses showed that the overall prevalence of anatomical variations for in situ studies was 6.46%, and through assessment of panoramic radiography and CT or CBCT the overall prevalence shown was 4.20% and 16.25%, respectively. CONCLUSIONS: There are two types of variations of the mandibular canal: the retromolar canal and bifid mandibular canal. The frequency variations through assessing in situ, panoramic radiography and CT or CBCT were 6.46%, 4.20% and 16.25%, respectively.