Root Canal Sealer
A cementing agent used in conjunction with a core filling material to seal the root canal system and occlude accessory canals and irregularities.
Cyclic Fatigue
The progressive structural failure of a rotary endodontic file caused by repeated tension-compression stress cycles as i...
Danger Zone
The thin concave inner wall of a curved root canal, typically the furcal surface of mesial molar roots, at greatest risk...
Dentin Hypersensitivity
A sharp, transient dental pain arising from exposed dentine in response to thermal, osmotic, evaporative, or mechanical...
Dentinal Crack
A microscopic or visible fracture line confined to the dentinal walls of the root canal, not extending through the full...
Dentinal Tubules
Microscopic channels that traverse the dentine from the pulp chamber to the outer dentino-enamel or dentino-cemental jun...
EAL
Abbreviation for Electronic Apex Locator, a device that uses electrical impedance measurements to determine the working...
EDTA
Ethylenediaminetetraacetic acid; a chelating irrigant used in endodontics to remove the inorganic component of the smear...
Electronic Apex Locator
An electronic device that measures electrical impedance or frequency to determine the position of the apical foramen dur...
Endo-Perio Lesion
A pathological communication between endodontic and periodontal disease processes involving the pulp space and the perio...
Endodontic Triad
The three foundational principles of successful root canal treatment: shaping, cleaning, and obturation of the root cana...
Flare-Up
An acute exacerbation of pain and/or swelling occurring between endodontic appointments or following treatment, requirin...
Furcation Involvement
The extension of periradicular or periodontal pathology into the furcation area of a multi-rooted tooth, relevant to bot...
Furcation Perforation
An iatrogenic or pathological communication between the root canal system and the periodontal ligament space occurring a...
GG Drill
A Gates-Glidden drill; a flame-shaped rotary bur used in endodontics to enlarge the coronal and middle thirds of a root...
Glide Path
A smooth, continuous, reproducible channel from the canal orifice to the apical foramen, established before rotary instr...
Gutta-Percha
A natural thermoplastic polymer derived from the Palaquium tree, used as the primary core material for root canal obtura...
Hydraulic Sealer
A bioceramic or calcium silicate-based root canal sealer that sets in the presence of moisture and expands slightly to c...
Internal Root Resorption
A pathological process in which dentoclastic cells destroy dentine from within the pulp canal, producing a characteristi...
Intracanal Medicament
An antimicrobial or anti-inflammatory agent placed within the root canal between appointments to reduce bacterial load a...
Irreversible Pulpitis
A clinical diagnosis indicating that the dental pulp is inflamed beyond its capacity to heal, necessitating endodontic t...
ISO Size
A standardised numerical designation for the diameter of an endodontic instrument tip, expressed in hundredths of a mill...
Isthmus
A narrow ribbon-shaped communication or corridor between two root canals within the same root, forming part of the compl...
Lateral Canal
An accessory branch of the main root canal that extends laterally through the dentine to the periodontal ligament space,...
Ledge
An iatrogenic shelf of dentine created on the canal wall when an instrument deviates from the original canal path, obstr...