C. N. Campos

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Cone beam computed tomography (CBCT) is a contemporary, radiological imaging system designed specifically for use on the maxillo-facial skeleton. The system overcomes many of the limitations of conventional radiography by producing undistorted, three-dimensional images of the area under examination. These properties make this form of imaging particularly(More)
A dominating set of a graph is a set S of vertices such that every vertex in the graph is either in S or is adjacent to a vertex in S. The domination number of a graph G, denoted γ (G), is theminimum cardinality of a dominating set ofG. We show that ifG is an n-vertexmaximal outerplanar graph, then γ (G) ≤ (n + t)/4, where t is the number of vertices of(More)
AIM To compare cone-beam computed tomography (CBCT) with periapical radiography for the identification of simulated endodontic complications. METHODOLOGY Sixteen human teeth, in three mandibles, were submitted to the following simulated endodontic complications: G1) fractured endodontic file; G2) root perforation; G3) cast post with deviation; G4)(More)
INTRODUCTION This in vitro study compared cone-beam computed tomography (CBCT) exam with different voxel sizes with digital periapical radiography in the detection of vertical root fractures in teeth with and without intracanal metallic posts. METHODS Eighteen single-rooted human teeth were endodontically treated, prepared for cast metal posts, and(More)
A dominating set of a graph G is a subset D ⊆ V (G) such that each vertex of G is in D or is adjacent to a vertex in D. The cardinality of a minimum size dominating set for G is denoted by γ(G). In 1996, Tarjan and Matheson proved that γ(G) ≤ n/3 for triangulated discs and conjectured that γ(G) ≤ n/4 for triangulated planar graphs with sufficiently large n.(More)