NEBDN Diploma (Dental Nursing) key terms

The combined process of cleaning, disinfection and sterilisation used to make reusable dental instruments and equipment safe to handle and use again on another patient.

A validated process that destroys all micro-organisms, including bacterial spores, on an instrument. In dental settings it is usually achieved by steam under pressure in an autoclave.

A machine that sterilises instruments using high-pressure steam at a set temperature and time. Its performance must be tested regularly using validation checks such as daily steam penetration tests.

The documented evidence that a decontamination process, such as an autoclave cycle, consistently works to the required standard. It includes routine tests, record keeping and periodic testing.

An instrument or material designed and labelled by the manufacturer to be used once only and then discarded. It must never be reprocessed or reused, even if it appears clean.

A rigid, puncture-resistant, colour-coded and correctly labelled box used to dispose of needles, blades and other sharp items safely. It must not be overfilled and is closed when the fill line is reached.

An accident in which a needle or other sharp object penetrates the skin. It requires immediate first aid, reporting and risk assessment because of possible blood-borne virus transmission.

Routine infection-control measures applied to every patient regardless of known infection status. They include hand hygiene, appropriate personal protective equipment, safe handling of sharps and safe waste disposal.

Items worn to protect the dental team from contact with blood, saliva and other body fluids, such as gloves, aprons, eye protection and face masks. It must be appropriate, fit for purpose and changed between patients.

The process of cleaning hands using soap and water or alcohol-based hand rub at the correct moments, such as before and after patient contact and after removing gloves.

The transmission of micro-organisms from one person or object to another. In dentistry it is prevented through decontamination, standard precautions and careful surgery design and workflow.

Organising the dental surgery into defined areas so that clean and dirty tasks are kept apart. This reduces the risk of contaminating clean instruments and surfaces during treatment.

A method of identifying teeth with numbers 1 to 32, starting at the upper right third molar and continuing across to the lower left third molar. It is widely used in the United States.

A two-digit system for identifying teeth. The first digit identifies the quadrant and the second identifies the tooth within it, so each permanent and primary tooth has a unique number.

A tooth-identification system that uses a grid of four bracket-like symbols representing the quadrants, with teeth numbered 1 to 8 from the midline backwards in each quadrant.

One of the four sections of the mouth, divided by the dental midlines: upper right, upper left, lower left and lower right. Each quadrant contains up to eight permanent teeth.

The set of teeth present in the mouth. The primary dentition has 20 teeth, while the permanent dentition usually has 32 teeth including the third molars.

The movement of a tooth through the gum into its functional position in the mouth. Primary teeth usually begin erupting around six months of age and permanent teeth follow later.

The natural loss of a primary tooth as its root resorbs and the permanent successor pushes through. This process is normal and does not usually require extraction.

The hard, highly mineralised outer layer covering the crown of a tooth. It is the hardest tissue in the body but cannot regenerate once it is lost.

The yellowish tissue forming the bulk of a tooth, lying beneath enamel in the crown and cementum in the root. It contains microscopic tubules and is sensitive when exposed.

The soft tissue at the centre of a tooth containing nerves, blood vessels and connective tissue. It provides sensation and nutrients and can become inflamed or infected.

A thin, bone-like layer covering the root of a tooth. It anchors the periodontal ligament fibres that hold the tooth in its socket.

The group of fibres that attaches the tooth root to the surrounding bone. It cushions forces during biting and allows a small degree of tooth movement.

Inflammation of the tissues supporting the teeth, caused by plaque bacteria, which leads to loss of attachment and bone. It is a major cause of adult tooth loss.

Reversible inflammation of the gums, usually caused by plaque accumulation. Signs include redness, swelling and bleeding on brushing, but there is no loss of supporting bone.

A sticky, colourless film of bacteria and food debris that forms on teeth and gums. Regular brushing and interdental cleaning remove it and help prevent caries and gum disease.

Hardened mineralised plaque that firmly adheres to teeth and cannot be removed by brushing. It provides a rough surface on which further plaque accumulates and is removed by scaling.

Dental decay caused by acids produced by bacteria in plaque fermenting sugars. It progressively destroys enamel and dentine and may lead to pulp involvement if untreated.

A mineral that strengthens enamel and helps prevent and slow dental caries. It is delivered through toothpaste, water and professional applications such as varnish.

A resin coating applied to the deep grooves of back teeth to prevent food and bacteria collecting there. It is a preventive measure aimed mainly at children at risk of caries.

A drug that temporarily blocks nerve sensation in a specific area so treatment can be carried out without pain. The patient remains conscious throughout.

Drawing back on a syringe before injecting to check whether the needle tip lies in a blood vessel. It helps prevent inadvertent intravascular injection.

A patient's voluntary agreement to treatment after receiving and understanding information about the proposed procedure, its benefits, risks, alternatives and the consequences of declining.

The legal principle that a child under 16 may consent to treatment if they have sufficient understanding and intelligence to fully comprehend what is proposed.

A person's ability to understand, retain and weigh information and communicate a decision at the time it is needed. It is assessed for each specific decision.

The duty to keep a patient's personal and health information private and share it only with those who need it for their care, or where the law permits or requires disclosure.

The legal framework governing how personal information, including patient records, must be stored, used, shared and kept secure. It gives individuals rights over their own data.

The accurate, contemporaneous and legible documentation of patient care, including assessments, treatment, advice given and consent. Records are legal documents and may be used as evidence.

A chronological record showing who did what and when within a process or system, such as decontamination cycles or record amendments. It supports accountability and traceability.

The legal and ethical obligation to act in the patient's best interests, to provide a reasonable standard of care and to avoid causing foreseeable harm.

A written record completed after an adverse event, near miss or accident, describing what happened and any action taken. It supports learning and patient safety rather than blame.

Ongoing learning and training that maintains and improves a dental nurse's knowledge, skills and professional practice throughout their career. It is usually recorded and evidenced.

The range of duties and responsibilities that a dental nurse is trained, competent and permitted to carry out. Working outside it may put patients at risk and breach professional standards.

The behaviours and attitudes expected of a registered dental professional, including honesty, integrity, respect, accountability and acting in the patient's best interests at all times.