• CAD/CAM – Computer-Aided Design/Computer-Aided Manufacturing
• calcium – mineral necessary to the formation and maintenance of healthy teeth and bones
• calculus – commonly called “tartar,” a hard substance that forms on teeth due to insufficient plaque control, may be stained brown or yellow
• canker sore – whitish mouth sore, usually lasts 10-14 days, may have red “halo”
• cantilever bridge – dental bridge that only attaches to teeth on one side
• cap – commonly used term for a dental crown
• caries – common term for tooth decay or “cavities”
• cast/model – 3D reproduction used by filling an impression or mold with plaster and allowing it to dry
• CAT scan – Computerized Axial Tomography scan, used to determine size, shape, and placement of bone, usually used for implant placement planning
• cavity – missing tooth structure caused by decay, abrasion, or erosion
• Cavitron – dental tool used in cleaning teeth, uses high-frequency ultrasonic waves
• cellulitis – potentially dangerous infection of the soft tissue, characterized by extensive hard swelling
• cementum – hard tissue that covers the outer surface of a tooth root
• cephalometric imaging – x-ray scan of the head that shows the relative positioning of the face, teeth, and jaws
• clasp – acrylic or metal portion of a partial denture that hooks to natural teeth
• cleaning/prophylaxis – the removal of plaque and calculus from the teeth above the gumline
• cleft palate – congenital deformity that is characterized by a partial or complete lack of fusion of soft and/or hard palate
• coil spring – spring used between brackets and archwire to open or close space between teeth
• complete denture – set of prosthetic teeth that are used to replace all upper or lower teeth
• composite resin – tooth-colored material composed of plastic with small particles of ceramic or glass, generally cured with a chemical catalyst or filtered light
• coronal – referencing the crown of a tooth
• cosmetic dentistry – dental services used to improve appearance, rather than health or function
• cross bite – lower teeth lie in front of upper teeth when teeth are closed
• crown – may refer to the visible tooth above the gumline or to a prosthetic dental restoration that replaces part or all of a natural tooth
• crown lengthening – surgical manipulation of gum tissue to expose more tooth structure, often used in conjunction with other treatment
• curettage – the removal of infected tissues from periodontal pocket or bone, often in conjunction with scaling and root planing (deep cleaning)
• cusp – pointed or rounded mound on or near the chewing surface of a tooth
• cuspid – tooth located between incisors and bicuspids, also known as “eye tooth” or “canine”
• cyst – sac of tissue, usually hard or filled with fluid