Glossary

Category: S

  • Streptococcus intermedius

    Gram‐positive, facultative cocci that have been associated with refractory periodontitis.  

  • Streptococcus spp

    Gram‐positive, nonmotile, facultative bacteria that represent a major group of oral bacteria. Normal constituent of plaque, but also associated with streptococcal diseases elsewhere in the body.  

  • Strain

    Strain

    Change in dimension of an object when subjected to an external force (stress). Horticultural term for seed-raised plants exhibiting certain desirable characteristics but which are not stable or predictable enough when propagated to be a cultivar. “Muscle pull;” a stretch, tear or rip of the muscle or adjacent tissue, such as fascia or muscle tendon.…

  • Stomatology

    The study of the structures, functions, and diseases of the mouth. Medical study of the mouth and its diseases. A branch of medicine which studies diseases of the mouth. The branch of medicine concerned with diseases of the mouth. The science of the mouth and teeth and their diseases. The examination of oral diseases.  

  • Stomatitis venenata

    Lesions caused by exposure to contact allergens.  

  • Stomatitis medicamentosa

    Eruptive lesions of the oral mucosa resulting from the ingestion of a systemic allergen, usually a medication.  

  • Stoma (pl. stomata or stomas)

    Any surgically constructed opening made for drainage or other purposes. The breathing pores of leaves.  

  • Stock tray

    A metal or plastic prefabricated impression tray used principally for preliminary impressions; available in several standardized sizes and shapes. Compare: Custom tray.  

  • STL (abbrev)

    Standard tessellation language.  

  • Stippling

    The pitted orange‐peel appearance of the attached gingiva, which is considered a structural characteristic of a healthy gingiva. The existence of a number of small pin-point areas in which the corneal epithelium has become denuded, resulting in these areas being stained if fluorescein is instilled into the eye. A spotted or speckled appearance, such as…