Israel Dental Licensing key terms

Surgical removal of the root apex after reflecting a flap, usually with retrograde preparation and filling, performed when nonsurgical root canal retreatment cannot resolve periapical disease.

Exposed irradiated bone that fails to heal for three months or more without tumor recurrence, occurring after high-dose radiotherapy and often triggered by extraction or infection.

Exposed bone in the maxillofacial region persisting beyond eight weeks in a patient taking antiresorptive or antiangiogenic drugs, with no history of head and neck radiotherapy.

Procedure that elevates the sinus floor membrane through a lateral window or crestal approach to gain vertical bone height for implant placement in the posterior maxilla.

Horizontal surgical separation of the maxilla above the apices, allowing repositioning of the entire upper jaw in orthognathic surgery for skeletal Class II or III correction.

Formation of a calcified stone within a salivary duct, most often the submandibular duct, causing recurrent meal-time swelling and pain relieved by stone removal or sialendoscopy.

Distance from a coronal reference point to the apical constriction, determined by apex locator and radiograph, that guides instrumentation and obturation limits during root canal treatment.

Microscopic debris layer of dentin particles and organic material created by instrumentation, which is removed with chelating agents and irrigants to allow sealer adaptation and disinfection.

Anatomical variation in which canal spaces are connected by a fin or web, most common in mandibular second molars, complicating cleaning, shaping, and obturation.

Interdiffusion zone formed when adhesive resin penetrates demineralized dentin collagen, providing micro-mechanical retention in etch-and-rinse and self-etch bonding systems.

Ratio of bonded to unbonded surface area in a cavity preparation; high values restrict resin flow and increase polymerization shrinkage stress at the bonded interface.

Encircling band of 1.5 to 2 mm of sound axial dentin and crown margin around a post-restored tooth that resists lever forces and improves fracture resistance.

Rule stating that the total root surface area of abutment teeth supporting a fixed partial denture should equal or exceed that of the teeth being replaced.

Vertical distance between the maxilla and mandible when teeth or occlusion rims contact, used to set tooth length and restore lost facial height in complete dentures.

Maxillomandibular relationship in which the condyles articulate with the thinnest avascular portion of their discs, independent of tooth contact, used as a reproducible reference for prosthodontic records.

Progressive reduction in alveolar bone height and width after tooth loss, fastest in the first year and greater in the mandible, affecting denture stability and implant planning.

Keratinized tissue extending from the free gingival margin to the mucogingival junction, providing a firm seal and resistance to functional and inflammatory stress.

Distance from the cementoenamel junction to the base of the periodontal pocket, combining recession and probing depth to quantify past and present attachment loss.

Reformation of connective tissue attachment and alveolar bone onto a previously diseased root surface, the histological goal of regenerative periodontal therapy.

Bleeding elicited by gentle probing of the sulcus, a clinical indicator of active gingival inflammation and a predictor of future attachment loss when persistent.

Measurement of angular and linear skeletal and dental relationships on a standardized lateral head radiograph, used to diagnose skeletal pattern and plan orthodontic or surgical treatment.

Resistance to unwanted tooth movement that allows desired movement of other teeth, provided by teeth, palatal structures, extraoral devices, or temporary skeletal anchorage devices.

Appliance placed after premature primary tooth loss to preserve arch length and guide eruption of the permanent successor, either fixed or removable.

Difference in mesiodistal width between primary canine and molars and their permanent successors, larger in the mandible, used to relieve mild crowding during the transition.

Predominantly white plaque that cannot be characterized clinically or pathologically as any other disease, a diagnosis of exclusion requiring biopsy to rule out dysplasia or carcinoma.

Histological alteration of oral epithelium showing disordered maturation, nuclear atypia, and altered differentiation, graded as mild, moderate, or severe and carrying malignant transformation risk.

Developmental cyst lined by parakeratinized stratified squamous epithelium with palisaded basal cells, known for high recurrence and association with nevoid basal cell carcinoma syndrome.

Benign but locally aggressive odontogenic epithelial tumor, most often in the posterior mandible, showing multilocular radiolucency and requiring resection with margins to prevent recurrence.

Three-dimensional imaging using a cone-shaped X-ray beam that provides high-resolution views of bone and teeth at lower dose than multidetector CT, with beam-hardening artifact near metal.

Three-dimensional volume reconstructed in cone beam imaging, selectable from small localized to large maxillofacial ranges; smaller volumes reduce dose and scatter and improve spatial resolution.

Guiding radiation protection principle requiring exposure to be kept as low as reasonably achievable, achieved through collimation, selection criteria, and appropriate receptor choice.

Tissue-weighted radiation quantity in sieverts that expresses overall stochastic risk from an exposure, allowing comparison between different dental imaging examinations and background radiation.

Adjustment of community drinking water fluoride to an optimal concentration that reduces dental caries across all ages, a population-level measure requiring monitoring and ethical communication.

Developmental enamel defect from excessive fluoride intake during tooth formation, ranging from faint white lines to pitting, primarily a cosmetic concern managed by masking or bleaching.

Lowest concentration of an antimicrobial agent that prevents visible growth of a microorganism under defined laboratory conditions, used to guide susceptibility and antibiotic selection.

Preoperative administration of antibiotics to prevent infection or distant seeding, indicated for defined cardiac conditions and selected immunocompromised patients before invasive dental procedures.

Adverse reaction from excessive local anesthetic blood levels causing tinnitus, metallic taste, seizures, arrhythmia, and cardiac arrest, treated with airway support and lipid emulsion rescue.

Body-weight-based ceiling for local anesthetic administration per appointment, adjusted for vasoconstrictor content and patient factors, used to prevent systemic toxicity during infiltration and blocks.

Neurally mediated transient loss of consciousness with bradycardia and hypotension triggered by stress or pain, managed by supine positioning with leg elevation and reassurance.

Severe IgE-mediated systemic hypersensitivity with airway swelling, bronchospasm, and hypotension, requiring immediate intramuscular epinephrine, oxygen, and emergency services activation.

Sequence of chest compressions, airway management, and ventilation delivered without advanced equipment to maintain circulation and oxygenation until help arrives.