A point first-order occlusal dysfunction acromegaly fixation occlusal index acrylic fixed appliance occlusal plane activation fixed appliance occlusion activation site flush terminal plane occlusoapical activator FMA onplant Adams clasp FMIA open bite adolescent dentition force OR adult dentition franchise dentistry orbitale alveolar arch Fränkel appliance ortho alveolar bone free-way space orthodontic (orthopedic) alveolar process frenectomy orthodontic appliance American Association of Orthodontists frenum orthodontic attachment anchorage friction orthodontic displacement Angle classification of malocclusion frontal cephalometric radiograph orthodontic force ankylosis full treatment orthodontics/dentofacial orthopedics anodontia functional appliance orthodontist ANS functional appliance orthognathic antegonial notch functional jaw orthopedics orthognathic surgery anterior cranial base functional matrix orthopedic anterior guidance functional occlusion orthopedic appliance anterior nasal spine gable bends, tent bends osseous anteroposterior gemination ostectomy anthropometry genial osteotomy apical base genioplasty overbite appliance gingiva overjet AR gingival attachment palatal bar arch gingival display palate arch form gingival graft palpation arch length gingival recession panoramic radiograph arch length deficiency gingivitis papilla (interdental) archwire glenoid fossa periapical articulare gnathion periodontal ligament axis of rotation gnathology periodontal membrane (or ligament) B point GO periodontal pocket balancing side gonial angle periodontics band (orthodontic) graft periodontium basal bone grinding permanent dentition basal dysplasia growth forecast (or prediction) pharynx basion growth potential PNS Begg appliance growth site PO Bennett movement growth spurt POG beta-titanium guidance, developmental pogonion bimaxillary dentoalveolar protrusion guide plane point A bimaxillary protrusion gummy smile point B Bimler appliance habit porion bionator habit therapy positioner (tooth positioner) biteblock habitual occlusion posterior nasal spine biteplate hand-wrist x-ray postural rest position Board Certification hard palate PPO (Preferred Provider Organization) bodily movement Hawley appliance preangulated bracket Bolton analysis Hawley retainer preventive orthodontic treatment Bolton point headcap primary dentition Bolton Point headfilm proclination bonding headgear prognathic brachycephalic Health Maintenance Organization (HMO) pronasale brachyfacial (brachyprosopic) helix prosthion bracket Herbst appliance protraction bruxism high angle malocclusion protrusion buccal high-pull headgear proximal segment buccoversion hinge axis pulp (dental) capitation dentistry Hooke's law pure rotation cast (dental) hooks quadhelix center of resistance hyperdivergent R point center of rotation hyperplasia R point (registration point) centric occlusion hypertrophy radiograph centric relation hypodivergent radiographic imaging cephalogram hypodontia ramus cephalometer hypoplasia rapid palatal or rapid maxillary expansion (RPE, RME) cephalometric analysis iatrogenic rare earth screens cephalometric landmarks ideal occlusion reciprocal anchorage cephalometric radiograph idiopathic reference frame ceramic brackets imaging removable appliance cervical appliance imbrication replantation chin cap immobilization reproximation (slenderizing) Class I malocclusion impaction (surgical) resection Class II malocclusion impaction (tooth) resilience Class II, Division 1 implant resorption Class II, Division 2 impression rest position Class III malocclusion incisal retainer cleft lip inclination retention cleft palate inclined plane retraction clenching index of malocclusion retrognathic clicking indirect bonding retroinclination closed bite indirect bonding retrusion closing loop Individual Practice Association (IPA) reverse-pull or protraction headgear College of Diplomates of the American Board of Orthodontics inelastic deformation ribbon arch appliance comprehensive orthodontic therapy infection control rigid fixation compressive deformation informed consent Risk Retention Group computer-assisted tomography (CATscan) infradentale roentgenogram computerized cephalometrics infraocclusion roentgenography computerized digital imaging intensifying screen root condylar displacement interceptive orthodontics root movement condylar growth interdental spacing root resection condylar guidance interdigitation root resorption condyle intermaxillary rotation condylion intermaxillary anchorage sagittal split osteotemy continuous arch wire intermaxillary elastic traction second order bends continuous orthodontic force intermittent force second order movement cosmetic orthodontics internal derangement second-order clearance couple interocclusal clearance second-order rotation couple-force ratio intramaxillary sectional arch wire cranial base intramaxillary anchorage sella turcica (sella; S) craniometry intraoral anchorage sella tursica crepitus intraoral force sella-nasion(S-N) crib intrusion separation crossbite irregularity index serial extraction crowding jaw sheath Crozat appliance jaw relationship soft palate curve of spee J-hook headgear space maintainer curve of Wilson joint symptoms space regainer cyst jumper specialist DDS or DMD jumping the bite splint debanding key ridge spring-back debonding key ridge stabilizing wire decompensation labial stiffness deep bite labial arch or bow stomatognathic system deformation labial root (lingual crown) torque stomion dehiscence labial sulcus stop dental arch labiolingual appliances straight wire appliance dental plaque labioversion strain dentofacial deformity labrale inferior stress (mechanical) dentofacial orthopedics labrale superior stress-relief DHMO (dental health maintenance organization) laminography stripping of teeth diagnostic set up landmarks, cephalometric subnasale diastema lateral cephalometric radiograph subspinale (Downs Point A) differential moment lateral excursion subtraction radiography digital image Le Fort I surgical procedure succedaneous teeth digitization Le Fort II surgical procedure superelastic Diplomate Le Fort III surgical procedure superimposition direct bonding Le Fort surgical procedure supernumerary teeth direct reimbursement leeway space superoinferior disclusion leveling supramentale (Downs point B) discrepancy leveling wire supraocclusion displacement ligature surgical fixation distal light-wire technique suture distal segment limited treatment symphysis (mental) distoclusion lingual syndrome distoversion lingual appliances technique (appliance) distraction osteogenesis lingual arch telescoping bite dolichocephalic lingual retainers temporomandibular articulation dolichofacial lingual root (labial crown) torque therapeutic diagnosis down-fracture lingual version third order bends Downs analysis linguoclusion third order movement dysfunction lip bumper threshold force dysplasia lip incompetence thumb (or finger) sucking early orthodontic treatment long-axis rotation tie-back ectopic long-face syndrome tinnitus edge-to-edge occlusion luxation TMD edgewise appliance macrodontia TMJ (temporomandibular joint) elastic magnetic force tomograph elastic deformation mal- tongue crib elastic limit malar tongue thrust elastic range malocclusion tooth size discrepancy elastic strength mandible torque elastics (rubber bands) mandibular osteotomy torsiversion elastomeric ligature mandibular resection (osteotomy) torus emergence materia alba toughness enucleate maxilla tracing (cephalometric) equilibrate maxillary traction eruption maxillary osteotomy transitional dentition etch maximum force translation etiology mechanotherapy transposition excessive force mediolateral transseptal fibers exfoliate menton transverse displacement exostosis mesial trauma expansion mesial drift trismus expansion key mesioclusion tuberosity expansion screw mesiodens Tweed triangle extraction mesiodistal twin block appliance extraoral anchorage mesognathic twin bracket extraoral force or traction microdontia ugly duckling stage extrusion micrognathia underbite facebow midsagittal plane undermining resorption facemask migration (dental) universal appliance facial mixed dentition uprighting facial asymmetry model (dental) utility arch facial concavity moment V bends facial convexity monobloc velopharyngeal insufficiency facial esthetics mouthguard velum facial form MRI (Magnetic Resonance Imaging) vertex (anatomy) facial growth MS vertical dimension facial pattern MSD vertical elastic traction facial proportions mucosa vestibular screen facial type myalgia visceral swallowing faciolingual myofunctional Visual Treatment Objective (VTO) fee for service dentistry NA w arch fenestration nasion wear facet fiberotomy natural head position working side finger spring neutroclusion World Federation of Orthodontists (WFO) finishing nightguard x-bite first order bends normal occlusion x-ray first order movement obturator zygoma first order rotation occlusal