Inlays & Onlays
Online Dental Education Library
Our team of dental specialists and staff strive to improve the overall health of our patients by focusing on preventing, diagnosing and treating conditions associated with your teeth and gums. Please use our dental library to learn more about dental problems and treatments available. If you have questions or need to schedule an appointment, contact us.
Air abrasion - is a drill-less technique that is being used by some dentists to remove tooth decay and for other applications
Amalgam - Material made from mercury and other alloy mixtures used to restore a drilled portion of a tooth.
Anesthesia - Medications used to relieve pain.
Anterior teeth - Front teeth. Also called incisors and cuspids.
Arch - The upper or lower jaw.
Baby bottle tooth decay - Caused by sugary substances in breast milk and some juices, which combine with saliva to form pools inside the baby's mouth.
Bicuspids -Back teeth used for chewing.
Bitewings - X-rays that help a dentist diagnose cavities.
Bonding - Application of tooth-colored resin materials to the surface of the teeth.
Bridge - A fixed or removable appliance that replaces lost teeth.
Bruxism - Teeth grinding.
CAD/CAM dentistry, (Computer-Aided Design and Computer-Aided Manufacturing in dentistry), is an area of dentistry utilizing CAD/CAM technologies to produce different types of dental restorations, including crowns, crownlays, veneers, inlays and onlays, fixed bridges, dental implant restorations and orthodontic appliances.
Calculus (tartar)- Calculus is hardened plaque (a sticky substance) that has been left on the tooth for some time and is now firmly attached to the tooth surface. Calculus forms above and below the gum line and can only be removed with special dental instruments.
Canal - The narrow chamber inside the tooth's root.
Canines - Also called cuspids.
Canker sore - One that occurs on the delicate tissues inside your mouth. A canker sore is usually light-colored at its base and can have a red exterior border.
Caries - Another term for decay, which causes cavities.
Cold sore - Usually occurs on the outside of the mouth, usually on or near the nose or lips. A cold sore is contagious because it is caused by the herpes simplex virus, and it is usually painful and filled with fluid.
Composite filling - Tooth colored restorations, also known as resin fillings.
Composite resin - A tooth colored resin combined with silica or porcelain and used as a restoration material.
Contouring - The process of reshaping teeth.
Crown - An artificial cover that is placed on the top of a tooth following restoration.
Cusps - The pointed parts on top of the back teeth's chewing surface.
Cuspids - Front teeth that typically have a protruding edge.
Dentin - The tooth layer underneath the enamel.
Denture - A removable set of teeth.
Endodontics - A form of dentistry that addresses problems affecting the tooth's root or nerve.
Fluoride - A naturally occurring substance added to water, toothpastes and some rinses and used for strengthening the tooth's enamel.
Fluorosis - A harmless over-exposure to fluoride and resulting sometimes in tooth discoloration.
Gingiva - Another word for gum tissue.
Gingivitis - A minor disease of the gums caused by plaque.
Gum disease - An infection of the gum tissues. Also called periodontal disease.
Impacted teeth - A condition in which a tooth fails to erupt or only partially erupts.
Implant - A permanent appliance used to replace a missing tooth.
Incisor - Front teeth with cutting edges; located in the center or on the sides near the front.
Inlay - An indirect artificial filling made of various materials, including porcelain, resin, or gold. fitted to a cavity in a tooth and cemented into place.
Intracoronal - situated or made within the crown of a tooth
Laminate veneer - A shell that is bonded to the enamel of a front tooth. The shell is usually thin and made from porcelain resin.
Malocclusion - Bad bite relationship
Mandible - The lower jaw
Maxilla - The upper jaw
Molar - Usually the largest teeth, near the rear of the mouth. Molars have large chewing surfaces
Nightguard - Night mouth guards are bite pads that are worn at night as you sleep. There are also used as mouth guards for day use. These guards are made of high-grade plastic and are custom fit to the mouth. This device keeps the upper teeth from grinding with the lower teeth, offering an instant solution to teeth clenching problems.
Neuromuscular Dentistry - Are more than the aches and pains felt in and around the neck and head that are associated with your teeth and jaw.
Onlay - An indirect artificial filling made of various materials, including porcelain, resin, or gold; fitted to a cavity in a tooth and cemented into place. It is designed to protect the chewing surface of a tooth by extending to replace a cusp.
Orthodontics - A field of dentistry that deals with tooth and jaw alignment.
Overdenture - A non-fixed dental appliance applied to a small number of natural teeth or implants.
Palate - Roof of the mouth.
Partial denture - A removable appliance that replaces teeth. Also called a bridge.
Pedodontics - A field of dentistry that deals with children's teeth.
Perio pocket - An opening formed by receding gums.
Periodontal disease - Infection of the gum tissues. Also called gum disease.
Periodontist - A dentist who treats diseases of the gums.
Permanent teeth - The teeth that erupt after primary teeth. Also called adult teeth.
Plaque -Plaque is a sticky, colorless, almost invisible film or substance that forms on the teeth after sleep or periods between brushing. It is a growing colony of living bacteria, food debris, and saliva.
Posterior teeth - The bicuspids and molars. Also called the back teeth.
Primary teeth - A person's first set of teeth. Also called baby teeth or temporary teeth.
Prophylaxis - The act of cleaning the teeth.
Prosthodontics - The field of dentistry that deals with artificial dental appliances.
Pulp - The inner tissues of the tooth containing blood, nerves and connective tissue.
Radiographs - Diagnostic X-rays essential for detection of decay, tumors, cysts, and bone loss. X-rays also help determine tooth and root positions.
Receding gum - A condition in which the gums separate from the tooth, allowing bacteria and other substances to attack the tooth's enamel and surrounding bone.
Resin filling - An artificial filling used to restore teeth. Also called a composite filling.
Root canal - A procedure in which a tooth's nerve is removed and an inner canal cleansed and later filled.
Root planing - Scraping or cleansing of teeth to remove heavy buildup of tartar below the gum line.
Sealant - A synthetic material placed on the tooth's surface that protects the enamel and chewing surfaces.
Tartar - A hardened substance (also called calculus) that sticks to the tooth's surface.
Tooth decay – Tooth decay occurs when the acids found in plaque erode the natural enamel found on the teeth. This phenomenon can easily be prevented by using proper home hygiene methods. Tooth decay is one of the leading causes of tooth loss, and its treatment often requires complex dental procedures.Teeth polishing: Removal of stain and plaque that is not otherwise removed during tooth brushing and scaling.
TMD - Temporomandibular joint disorder. Health problems related to the jaw joint just in front of the ear.
Veneer - A laminate applied or bonded to the tooth.
Whitening - A process that employs special bleaching agents for restoring the color of teeth.
Wisdom tooth - Third set of molars that erupt last in adolescence.
There are times when a tooth suffers damage (from decay, for example) that is too extensive to be treated with a simple filling — but not extensive enough to need a full-coverage crown. In these cases, the best option for restoring the tooth may be an inlay or onlay.
Both inlays and onlays are considered “indirect” fillings, meaning that they are fabricated outside the mouth (generally at a dental laboratory), and then bonded to the tooth by the dentist. This is in contrast to a “direct” filling, which is applied directly to the cavity by the dentist in one office visit.
An indirect filling is considered an “inlay” when it fits within the little points or “cusps” of a back (premolar or molar) tooth. It is an “onlay” if it covers one or more of these cusps. Either way, the procedure for placing an inlay or onlay is the same.
How It Works
Getting an inlay or onlay is very much like what you would experience having a crown placed, with one important distinction: less of your natural tooth structure will need to be removed by drilling when you receive an inlay or onlay. When you get a crown, the tooth needs to undergo significant reshaping so that it will fit inside its new covering. Since dentistry's goal is to preserve as much of your natural tooth structure as possible, inlays and onlays may be recommended instead of crowns when a tooth can be restored with this more conservative type of treatment.
The first steps in getting an inlay or onlay are numbing the tooth and surrounding area with a local anesthetic, and then removing the decay. This is done in order to prevent the decay, which is actually a type of infection, from progressing deeper into the tooth.
Once the tooth has been prepared, an impression of it is made (either digitally or with a putty-like material) and sent to the dental laboratory. There, the impression is used to make a model of your tooth for the creation of your inlay/onlay. The final restoration can be made out of gold or a tooth-colored ceramic or resin.
Before you leave the office, a temporary filling will be attached to your tooth to protect it until the permanent restoration is ready. At your second visit, the permanent inlay/onlay will be attached to your tooth with either a resin that hardens when exposed to a special light source, or a type of permanent cement.
Inlays and onlays are strong, long-lasting, and require no greater level of care than any other tooth. Conscientious daily brushing and flossing, and regular professional cleanings at the dental office are all you need to make sure your restoration lasts for years to come.
Porcelain Crowns & Veneers Dear Doctor magazine examines two innovative strategies for improving your smile. In many instances, these two restorative techniques can produce nearly identical aesthetic results, even though they are designed differently for handling different structural problems... Read Article
The Natural Beauty of Tooth-Colored Fillings The public's demand for aesthetic tooth-colored (metal free) restorations (fillings) together with the dental profession's desire to preserve as much natural tooth structure as possible, has led to the development of special “adhesive” tooth-colored restorations... Read Article
Tooth Decay — A Preventable Disease Tooth decay is the number one reason children and adults lose teeth during their lifetime. Yet many people don't realize that it is a preventable infection. This article explores the causes of tooth decay, its prevention, and the relationship to bacteria, sugars, and acids... Read Article