Open AccessInternal Lower Incisor Morphology revealed by Computerized Microtomography.
Author(s) -
Carolina Oliveira de Lima,
Lorena Ta Magalhães,
Marília Fagury Videira MarcelianoAlves,
Patrícia Yanne de Oliveira,
Mariane Fls Lacerda
Publication year - 2020
Publication title -
acta odontológica latinoamericana/acta odontológica latinoamericana
Language(s) - English
Resource type - Journals
eISSN - 1852-4834
pISSN - 0326-4815
DOI - 10.54589/aol.33/1/033
Subject(s) - perimeter , root canal , orthodontics , x ray microtomography , volume (thermodynamics) , morphology (biology) , apex (geometry) , incisor , anatomy , dentistry , materials science , mathematics , medicine , biology , geometry , radiology , physics , genetics , quantum mechanics
This study evaluated the internal morphology of lower incisors using computerized microtomography (micro-CT) images. Eighty-nine lower incisors were scanned by micro-CT and reconstructed with NRecon software. 2D parameters (perimeter, root length, circularity and canal diameter) and 3D parameters (volume, surface area and structure model index) were evaluated with CTAn and CTVol software. The results are presented descriptively. It was found that 89.9% of the canals had a single main root canal (type I), followed by type II (6.7%) and III (3.4%), while 5.6% of the specimens presented lateral canals and 1.1% had an apical delta. Mean volume and surface area were 31.80mm³ and 90.58mm², respectively. The most prevalent shape of the root canal at CEJ level was circular (41.6%) and 1mm from the apex, 73% of the samples were classified as oval. Lower incisors with internal anatomical variations may offer a high degree of technical complexity and may result in treatment failure.