DBT-BET flashcards
DBT-BET · 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.
- Universal tooth numbering
- System numbering permanent teeth 1 through 32, starting at the maxillary right third molar and ending at the mandibular right third molar, proceeding around the arch.
- Curve of Spee
- Anteroposterior curve formed by the occlusal surfaces from the canine tip through the buccal cusps of the posterior teeth, concave in the mandibular arch.
- Cusp of Carabelli
- A supplemental cusp located on the mesiolingual surface of maxillary molars, most frequently seen on the maxillary first molar.
- Overjet definition
- The horizontal distance from the labial surface of the mandibular incisor to the incisal edge of the maxillary incisor, normally 2 to 3 millimeters.
- Gamma-2 phase
- The tin-mercury phase (Sn7-8Hg) in low-copper amalgam that is weak and corrosion-prone; high-copper amalgams reduce or eliminate it.
- C-factor
- The ratio of bonded to unbonded surface area in a cavity preparation; a high C-factor increases polymerization shrinkage stress at the bonded interface.
- Transformation toughening
- A mechanism in zirconia where stress transforms tetragonal crystals to monoclinic, expanding and creating compressive stress that resists crack propagation.
- Addition silicone
- A polyvinyl siloxane impression material that sets by hydrosilylation, releases no byproduct, and is the most dimensionally stable elastomer.
- Ferrule effect
- A circumferential band of at least 1.5 to 2 millimeters of dentin coronal to the finish line that improves fracture resistance of restored endodontically treated teeth.
- Total occlusal convergence
- The sum of the tapers of opposing axial walls of a preparation; ideal is 4 to 6 degrees, and excessive taper reduces retention.
- Modified ridge lap pontic
- A pontic design with a convex labial surface and a concave, tissue-contact area limited to the ridge crest, balancing esthetics and cleanability.
- MDP primer
- A methacrylate monomer containing phosphate groups that chemically bonds to zirconia and metal oxides, enabling durable resin cement adhesion.
- Posterior palatal seal
- A 1 to 1.5 millimeter area of compression placed at the junction of the hard and soft palate to improve retention of a maxillary complete denture.
- Kennedy Class I
- A removable partial denture situation with bilateral edentulous areas located posterior to the remaining natural teeth, i.e., bilateral distal extension.
- Neutral zone
- The potential space between the lips and cheeks on one side and the tongue on the other, where forces balance and teeth should be positioned.
- RPI clasp
- A removable partial denture retention design using a mesial rest, proximal plate, and I-bar that reduces torque on abutment teeth.
- ANB angle
- A cephalometric measurement of the angle between A-point, nasion, and B-point; about 2 degrees indicates a skeletal Class I relationship.
- Tanaka-Johnston analysis
- A mixed-dentition space analysis estimating arch length by summing half the mesiodistal widths of mandibular incisors plus 10.5 millimeters per quadrant.
- Temporary anchorage device
- A miniscrew or miniplate placed in bone to provide absolute anchorage for orthodontic tooth movement without relying on other teeth.
- Angle Class II
- A malocclusion where the mesiobuccal cusp of the maxillary first molar occludes mesial to the buccal groove of the mandibular first molar.
- Spaulding classification
- A system categorizing items as critical, semicritical, or noncritical based on risk of infection, guiding sterilization versus disinfection decisions.
- Biological indicator
- A sterilization monitoring device containing resistant bacterial spores; Geobacillus stearothermophilus is used for steam and Bacillus atrophaeus for dry heat or ethylene oxide.
- Sharps one-handed scoop
- A technique for recapping needles without directing the free hand toward the needle, reducing needlestick injury risk.
- Alcohol-based hand rub
- A hand hygiene method used for routine, non-soiled hands; rub 20 to 30 seconds and avoid when hands are visibly soiled.
- Safety Data Sheet
- A document required by OSHA Hazard Communication Standard providing hazard, handling, and emergency information for each chemical in the workplace.
- Informed consent elements
- Consent requires patient capacity, disclosure of risks and alternatives, patient understanding, and voluntary agreement without coercion.
- Laboratory prescription
- A written dentist order specifying patient identification, materials, shade, design, and date, required for each prosthesis fabricated by a dental laboratory.
- Record retention
- The required period for keeping patient and laboratory records, commonly 7 to 10 years for adults and longer for minors, per local regulations.
- STL file format
- A file format storing surface geometry as triangles without color or material data, widely used for intraoral scans and CAD/CAM design.
- DICOM format
- A medical imaging standard used for CBCT data that can be merged with STL scans for implant planning and surgical guide design.
- Zirconia sintering shrinkage
- Green-state zirconia shrinks about 20 to 25 percent during sintering at roughly 1450 to 1500 degrees Celsius, compensated by CAM software scaling.
- Delta E color difference
- A CIELAB-based metric of color difference; values below 1 are imperceptible, 1 to 2 clinically acceptable, and above 3.3 visibly different.