Nasal BoneMaxillaBone and BonesDown SyndromeNasal MucosaCrown-Rump LengthFacial NerveUltrasonography, PrenatalFacial BonesMaxillary NeoplasmsNuchal Translucency MeasurementFacial ParalysisPregnancy Trimester, FirstFacial ExpressionBone RemodelingPregnancy Trimester, SecondFacial MusclesMaxillary DiseasesSkull FracturesBone DensityNasal PolypsNasal SeptumGestational AgeFacial Nerve DiseasesBone ResorptionPregnancyFaceFacial InjuriesMandibleMaternal AgeBone MarrowFacial AsymmetryChorionic Villi SamplingImaging, Three-DimensionalNasal Lavage FluidBone NeoplasmsChromosomes, Human, 16-18Nose Deformities, AcquiredCephalometryChorionic Gonadotropin, beta Subunit, HumanPregnancy-Associated Plasma Protein-ANoseBone DevelopmentBone Marrow CellsBone DiseasesFacial DermatosesMaxillofacial DevelopmentChromosomes, Human, 13-15Nasal DecongestantsZygomaBone RegenerationFrontal BoneMaxillary SinusBone TransplantationSkullFacial NeoplasmsVertical DimensionDental Implantation, EndosseousFacial PainAlveolar Bone LossJaw, EdentulousBone MatrixObserver VariationSkull BaseExtraoral Traction AppliancesFetal DiseasesBone Marrow TransplantationTrisomyPregnancy, High-RiskTemporal BoneBone Substitutes