Taiwan Dentist Licensing Examination flashcards
Taiwan Dentist Licensing Examination · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Neonatal line
- A prominent incremental line in enamel and dentin marking the abrupt change in mineral and organic content at birth, separating prenatal from postnatal tissue.
- Competitive inhibition
- An inhibitor binds the enzyme active site reversibly, raising the apparent Km without changing Vmax; it can be overcome by increasing substrate concentration.
- IgA in saliva
- Secretory IgA is a dimer produced by plasma cells near mucosal surfaces, transported across epithelium by the polymeric immunoglobulin receptor, and is the main mucosal antibody.
- Mandibular foramen
- The opening on the medial ramus of the mandible through which the inferior alveolar nerve and vessels enter the mandibular canal.
- Otic ganglion
- Parasympathetic ganglion near the foramen ovale where glossopharyngeal secretomotor fibers synapse before traveling with the auriculotemporal nerve to the parotid gland.
- TMJ disc
- An avascular fibrocartilaginous pad dividing the temporomandibular joint into upper (translation) and lower (rotation) compartments, attached to the condyle and capsule.
- Periodontal ligament fibers
- Principal collagen fibers (alveologingival, dentogingival, dentoalveolar, transseptal) anchoring cementum to bone and distributing occlusal forces.
- C-factor
- The ratio of bonded to unbonded surface area in a cavity; a high C-factor increases contraction stress because shrinkage cannot be relieved by flow.
- Zinc oxide-eugenol
- A temporary restorative and obtundent material; free eugenol inhibits resin polymerization, so resin composites must not contact it during setting.
- Elastic modulus
- A material property describing stiffness, the ratio of stress to strain in the elastic region; higher values mean greater rigidity and less deformation.
- Smear layer
- A debris layer of cut dentin and collagen created by instrumentation; it occludes tubules and must be removed or infiltrated for reliable dentin bonding.
- Working length
- The distance from a coronal reference point to the apical constriction, typically 0.5-1.0 mm short of the radiographic apex, guiding instrumentation.
- MB2 canal
- A second mesiobuccal canal in maxillary molars, located mesiobuccal to the main MB canal; it is the most commonly missed canal during endodontic treatment.
- Ante's law
- A guideline stating the root surface area of abutment teeth should equal or exceed that of the pontic; it informs, but does not absolutely determine, fixed partial denture design.
- Path of insertion
- The direction in which a fixed or removable prosthesis is placed onto abutments, determined by parallel guiding planes and verified with a surveyor.
- Neutral zone
- The potential space between lips, cheeks, and tongue where denture teeth are positioned so muscular forces are balanced during function.
- Clinical attachment level
- The distance from the cementoenamel junction to the base of the sulcus or pocket, reflecting true periodontal attachment loss rather than pocket depth alone.
- Guided tissue regeneration
- A procedure using a barrier membrane to exclude epithelium and connective tissue from a periodontal defect, allowing bone and periodontal ligament to regenerate.
- Radicular cyst
- The most common odontogenic cyst, arising from epithelial rests of Malassez in a periapical granuloma; it is usually asymptomatic and associated with a nonvital tooth.
- Ameloblastoma
- A locally aggressive odontogenic epithelial tumor, usually in the posterior mandible, with a soap-bubble radiographic appearance; treatment is resection with margins.
- Leukoplakia
- A white patch or plaque that cannot be rubbed off and cannot be clinically classified as another disease; biopsy is required to exclude dysplasia or carcinoma.
- Dry socket
- Alveolar osteitis presenting 2-3 days after extraction with severe pain and an empty socket due to loss of the blood clot; treated by irrigation and medicated dressing.
- Leeway space
- The difference in mesiodistal width between primary canine and molars and their permanent successors; it is larger in the mandible and helps relieve crowding.
- Angle Class II
- A malocclusion in which the mandibular first molar is positioned distal to the maxillary first molar, often with an increased overjet.
- Space maintainer
- An appliance that preserves arch length after premature loss of a primary tooth; a band-and-loop is used for a single missing primary molar.
- Informed consent
- Voluntary agreement after disclosure of diagnosis, proposed treatment, alternatives, and risks, obtained from a competent patient free of coercion.
- Universal precautions
- The practice of treating all blood and body fluids as potentially infectious, requiring gloves, masks, eye protection, and gowns for all patients.
- Autoclave sterilization
- Sterilization using pressurized saturated steam, typically 121 degrees C at 15 psi for 15-20 minutes or 134 degrees C for 3-4 minutes; verified by biological indicators.
- Prevalence
- The proportion of a population with a condition at a specified time; it counts existing cases and is influenced by both incidence and disease duration.
- Ludwig's angina
- A rapidly spreading bilateral cellulitis of the submandibular and sublingual spaces that may obstruct the airway; management includes airway protection and surgical drainage.
- Reciprocal arm
- A removable partial denture component that contacts the abutment tooth opposite the retentive clasp arm to stabilize the prosthesis against horizontal forces.
- Dentin permeability
- The rate of fluid flow through dentinal tubules, highest near the pulp and in cervical dentin where tubules are wider and more numerous.