title: Critical anatomic region of nasopalatine canal based on tridimensional analysis: cone beam computed tomography.
abstract: The study aim of this was to define the critical anatomic region of the premaxilla by evaluating dimensions of nasopalatine canal, buccal bone plate (BBP) and palatal bone plate (PBP). 230 CBCTs were selected with both, one or no upper central incisors present (+/+, -/+, -/-) and periodontal condition was evaluated. T-student test, ANOVA, Pearson's correlation and a multivariant-linear regression model (MLRM) were used. Regarding gender, significant differences at level 1 (lower NC) were found for: buccal-palatal, transversal and sagittal NC diameters, and NC length (NCL). Regarding dental status, significant differences were found for: total BBP length (tBL) and PBP width (PW2) at level 2 (NCL midpoint). NCL was correlated with PW2, tBL, and PBP length at level 3 (foramina of Stenson level). An MLRM had a high prediction value for NCL (69.3%). Gender is related to NC dimensions. Dental status has an influence on BBP dimensions, but does not influence on NC and PBP. Periodontal condition should be evaluated for precise premaxillae analysis NC diameters at the three anatomical planes are related to each other, while NCL is related to BBP and PBP lengths. A third of premaxilla is taken up by NC, thus, establishing the critical anatomic region.
authors.affiliation: Department of Stomatology, Medicine and Dentistry School, University of Santiago de Compostela, c/ Entrerrios, s/n, Santiago de Compostela, 15872, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Fernández-Alonso
authors.affiliation: Department of Anatomy, Medicine and Dentistry School, University of Santiago de Compostela, c/ San Francisco, s/n, Santiago de Compostela, 15782, Spain.
authors.forename: Juan Antonio
authors.initials: JA
authors.lastname: Suárez-Quintanilla
authors.affiliation: Department of Stomatology, Medicine and Dentistry School, University of Santiago de Compostela, c/ Entrerrios, s/n, Santiago de Compostela, 15872, Spain.
authors.forename: Juan
authors.initials: J
authors.lastname: Muinelo-Lorenzo
authors.affiliation: Department of Social Psychology, Basic Psychology and Methodology, Psychology School, University of Santiago de Compostela, c/ Xosé María Suárez Núñez, s/n, 15782, Santiago de Compostela, Spain.
authors.forename: Jesús
authors.initials: J
authors.lastname: Varela-Mallou
authors.affiliation: Department of Preventive Medicine and Public Health, Medicine and Dentistry School, University of Santiago de Compostela, c/ San Francisco, s/n, Santiago de Compostela, 15782, Spain.
authors.forename: Ernesto
authors.initials: E
authors.lastname: Smyth Chamosa
authors.affiliation: Department of Stomatology, Medicine and Dentistry School, University of Santiago de Compostela, c/ Entrerrios, s/n, Santiago de Compostela, 15872, Spain.
authors.forename: María Mercedes
authors.initials: MM
authors.lastname: Suárez-Cunqueiro
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D008875:Middle Aged; D008953:Models, Anatomic; D010159:Palate / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D012044:Regression Analysis