CCOAK key terms

A reproducible bony or soft-tissue point on a lateral headfilm, such as sella or nasion, used to draw reference planes and measure skeletal and dental relationships for diagnosis and growth tracking.

The process of outlining anatomic structures and plotting landmarks on a lateral cephalometric radiograph, then measuring angles and distances to quantify jaw position, incisor inclination, and facial proportions.

A description of jaw relationship, commonly Class I, II, or III, based on the anteroposterior position of the maxilla relative to the mandible rather than on tooth position alone.

A dental classification of occlusion based on the mesiobuccal cusp of the maxillary first molar and its relationship to the buccal groove of the mandibular first molar, described as Class I, II, or III.

The horizontal distance between the incisal edge of the maxillary incisor and the labial surface of the mandibular incisor, measured parallel to the occlusal plane, normally about two to three millimeters.

The vertical overlap of the maxillary incisors over the mandibular incisors, expressed in millimeters or as a percentage of lower incisor crown coverage.

A lack of vertical contact between opposing teeth, which may be anterior or posterior, and can be caused by digit habits, tongue thrust, skeletal growth patterns, or appliance interference.

The difference in combined mesiodistal width between the primary canine and molars and their permanent successors in each arch, space that can be used to relieve mild crowding during the transition to the permanent dentition.

The typical order in which primary and permanent teeth emerge, useful for spotting delayed or ectopic eruption and for timing interceptive treatment or appliance placement.

A tooth that cannot erupt into its normal functional position because of crowding, abnormal angulation, or a physical barrier, frequently an impacted maxillary canine or third molar.

The fibrous tissue between the tooth root cementum and alveolar bone that suspends the tooth, transmits occlusal force, and provides the cellular environment for orthodontic tooth movement.

Localized degeneration of periodontal ligament fibers on the pressure side of a moved tooth when force exceeds capillary pressure, temporarily halting movement until tissue is cleared and rebuilt.

A force level that produces predictable tooth movement with minimal patient discomfort and tissue damage, generally light and continuous, allowing capillary blood flow in the periodontal ligament.

Resistance to unwanted tooth movement, gained from other teeth, the palate, the jaws, or temporary skeletal devices, used to direct reactive forces away from teeth that must not shift.

A small titanium screw or plate placed in bone to serve as a fixed anchorage point for elastics or springs, removed after treatment and requiring careful hygiene around the healing site.

Shortening or blunting of the tooth root apex caused by sustained orthodontic force, trauma, or impaction, monitored on radiographs because severe cases can compromise long-term tooth stability.

The routine of washing with soap and water or using alcohol-based rub at defined moments, including before and after glove use, to prevent transmission of microorganisms between patients and staff.

Barrier items worn to protect skin, eyes, and mucous membranes from blood and saliva splatter, including gloves, masks, protective eyewear or face shields, and gowns.

A validated process that destroys all microbial life, including bacterial spores, on instruments, commonly by steam autoclave, and verified with biological and chemical indicators.

Reduction of pathogenic microorganisms on surfaces or items that cannot tolerate sterilization, using a product appropriate to the level of contamination and the intended use of the item.

A system that groups patient-care items as critical, semicritical, or noncritical according to the risk of contact with sterile tissue, intact mucosa, or skin, guiding whether sterilization or disinfection is required.

Airborne particles of saliva, blood, and water produced by high-speed handpieces, ultrasonic scalers, and air-water syringes, controlled with high-volume evacuation and preprocedural rinses.

A working method in which the operator and chairside assistant coordinate instrument transfer and retraction so that treatment proceeds efficiently with minimal fatigue and reduced cross-contamination.

The area near the patient's chin where the assistant exchanges used and fresh instruments with the operator, keeping the transfer out of the patient's line of sight and below the working field.

A modified pen-style hold in which instruments such as band pluggers or scalers are stabilized against the palm and fingers, allowing firm controlled pressure while the assistant retracts and keeps the field dry.

A stable point of contact, usually a finger on a nearby tooth or the patient's chin, that steadies the instrument and prevents slipping into soft tissue during bonding or wire work.

A wide-bore suction tip held close to the working field to remove saliva, water spray, and aerosol generated during bonding, debonding, or wire adjustment, keeping enamel dry for adhesion.

Keeping the working area free of saliva and moisture using cotton rolls, dry angles, cheek retractors, or suction, which is essential because contamination weakens the bond between adhesive and enamel.

Application of phosphoric acid gel or solution to enamel for a specified time, then rinsing and drying, to create microporosity that allows resin adhesive to form a mechanical bond.

The force per unit area needed to separate an adhesive joint, such as bracket to enamel, influenced by enamel condition, moisture control, adhesive type, and light-curing adequacy.

Exposing light-activated adhesive or composite to a dental curing unit at the correct wavelength, intensity, and duration so the material polymerizes and holds the attachment securely.

Any bracket, tube, or button bonded or banded to a tooth to transmit force from an archwire or elastic, including ceramic, metal, self-ligating, and lingual designs.

Fitting and cementing a metal ring around a molar or premolar, using separators beforehand, then seating the band with glass ionomer or resin cement and removing excess material.

A small elastomeric ring or metal spring placed between adjacent teeth for a few days to create enough space for seating an orthodontic band without forcing the contact.

A wire engaged in bracket slots that guides teeth into alignment through its shape and elasticity, selected by alloy, cross-section, and stiffness for each stage of treatment.

A superelastic alloy wire that delivers light continuous force over a wide range of deflection, making it useful for initial alignment and leveling before stiffer wires are introduced.

A thin stainless steel tie twisted around a bracket and archwire to hold the wire in the slot, used when elastomeric ties are unsuitable or additional force control is needed.

A small rubber ring stretched around bracket wings to hold the archwire in the slot, available in colors and replaced at visits because it loses force and stains over time.

A continuous strip of connected elastic rings engaged on brackets to close spaces or correct rotations, requiring periodic replacement as its force decays.

A removable or fixed device, such as a tongue crib or palatal bar, that discourages digit sucking or tongue thrust that could reopen a corrected bite.

A removable or fixed appliance worn after active treatment to hold teeth in their corrected positions while periodontal and bone remodeling stabilizes the result.

Movement of teeth back toward their pretreatment positions after active treatment, reduced by consistent retainer wear, adequate treatment finishing, and management of habits.

A record made by seating a tray filled with irreversible hydrocolloid over the teeth until the material sets, used for study models and appliance fabrication and poured promptly to avoid distortion.

Digital capture of the dentition and soft tissues with a handheld scanner, producing a three-dimensional model for records, aligner fabrication, and appliance design without impression material.

A physical or digital reproduction of the dental arches used to assess occlusion, measure crowding and spacing, plan treatment, and document the starting condition.

A standardized facial image, frontal and profile, taken at the start and end of treatment to document facial proportions, lip posture, and esthetic change.

A standardized image of the teeth and occlusion in several views, used for records, communication, and comparison of alignment and hygiene over the course of treatment.

A chalky demineralized area on enamel around a bracket caused by plaque acid, prevented with thorough brushing, fluoride, and reduced sugar exposure during treatment.

Routine removal of bacterial plaque from teeth, brackets, and wires using a soft brush, interdental brush, and floss threaders, taught and checked at each adjustment visit.

A concentrated topical fluoride coating applied to enamel to increase resistance to acid demineralization, especially around brackets and in patients with high caries risk.

The patient's adherence to instructions for elastics, removable appliances, retainer wear, diet, and hygiene, which strongly influences treatment time and outcome.

Removal of brackets and residual adhesive from teeth at the end of treatment, followed by polishing, checking enamel integrity, and taking final records before retainer delivery.

A protruding archwire end that irritates cheek, lip, or gingiva, relieved chairside by clipping the wire, applying wax, or bending the tip away from tissue.

An unscheduled or short visit to manage pain, trauma, a loose or broken appliance, or a lost retainer, with triage based on urgency and documentation of what was done.

The legally defined set of duties a dental assistant may perform, and under what supervision, varying by jurisdiction and determining which orthodontic tasks can be delegated.

The process of explaining diagnosis, treatment options, risks, benefits, and alternatives so the patient or guardian can voluntarily agree before treatment begins.

The complete documented history of care, including charts, radiographs, photographs, consent forms, and progress notes, kept accurate, confidential, and retained per legal requirements.