Search results for "Posterior nasal spine"

showing 2 items of 2 documents

Do palatal implants remain positionally stable under orthodontic load? A clinical radiologic study.

2009

Introduction The aim of this study was to determine the positional stability and success rate of palatally placed length-reduced temporary anchorage devices (LRTADs) (length, 4 or 6 mm). Methods Twenty-two patients (ages, 21-62 years; 14 women, 8 men) were enrolled in the study. Each received 1 LRTAD (Orthosystem, Straumann, Switzerland) placed in the midsagittal palate for multifunctional anchorage tasks. Standardized cephalograms were taken directly after implant placement and at the end of treatment to analyze any implant movements. The cephalometric tracings were superimposed on anterior nasal spine to posterior nasal spine in posterior nasal spine to analyze changes in implant angulati…

AdultMaleTime FactorsTooth Movement TechniquesCephalometryBone ScrewsDentistryOrthodonticsOsseointegrationWeight-BearingYoung AdultOsseointegrationmedicineOrthodontic Anchorage ProceduresHumansOrthodontic Appliance DesignLongitudinal StudiesOrthodonticsDental Implantsbusiness.industryPalateDental Implantation EndosseousAnterior nasal spineCraniometryMiddle Agedmedicine.diseaseOrthodontic Anchorage ProceduresRadiographymedicine.anatomical_structureMaxillaFemaleImplantStress MechanicalMalocclusionPosterior nasal spinebusinessMalocclusionAmerican journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
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Landmark identification on direct digital versus film-based cephalometric radiographs: A human skull study

2002

The purpose of this study was to investigate differences in landmark identification on vertically scanned, direct digital and conventional (18 x 24 cm) cephalometric radiographs. Eight observers, all orthodontists or postgraduate orthodontic students, recorded 6 landmarks twice on 3 digital and 3 conventional cephalograms obtained from 3 human skulls in a standardized fashion. Digital images were displayed on a 15.1-in TFT monitor in 3:1 mode (20 x 26 cm). Recordings were transferred into standardized coordinate systems and evaluated separately for each coordinate. After correcting for magnification, precision was assessed with Maloney-Rastogi tests, and intraobserver and interobserver repr…

Observer VariationOrthodonticsLandmarkCephalometrybusiness.industryX-Ray FilmRadiographyReproducibility of ResultsMagnificationOrthodonticsContext (language use)Radiography Dental DigitalStatistics NonparametricDigital imageHuman skullmedicine.anatomical_structuremedicineHumansNasionComputer visionArtificial intelligencePosterior nasal spinebusinessMathematicsAmerican Journal of Orthodontics and Dentofacial Orthopedics
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