access cavity

access cavity

Etymology: L, accedere, to approach

a coronal opening to the center (pulp chamber) of a tooth, required for effective cleaning, shaping, and obturation of the pulp canals and chamber during endodontic or root canal therapy.

---

cavity,

n a carious lesion or hole in a tooth.

cavity, access,

n See access cavity.

cavity, amniotic,

n the space between the developing fetus and the amnion, consisting of amniotic fluid.

cavity, axial surface,

n a cavity occurring in a tooth surface in which the general plane is parallel to the long axis of the tooth.

cavity classification,

n carious lesions are classified according to the surfaces of a tooth on which they occur (e.g., labial, buccal, occlusal), type of surface (i.e., pit, fissure, or smooth surface), and numerical grouping (G. V. Black's classification).

cavity classification, artificial (G. V. Black),

n a classification of cavities.

cavity, complex,

n a cavity that involves more than one surface of a tooth.

cavity, compound,

n See cavity, complex.

cavity floor,

n the base-enclosing side of a prepared cavity. See also cavity, prepared.

cavity, gingival (gingival third cavity),

n a cavity occurring in the gingival third of the clinical crown of the tooth (G. V. Black's Class 5).

cavity lining,

n the material applied to the prepared cavity before the restoration is inserted to seal the dentinal tubules for protection of the pulp.

cavity medication,

n a drug used to clean or treat a cavity before inserting a dressing, base, or restoration.

cavity, nasal,

n the two irregular spaces that are situated on either side of the midline of the face, extend from the cranial base to the palate, and are separated from each other by a thin vertical septum. In radiographs it appears over the roots of the maxillary incisors as a large, segmented, radiolucent area. Also called
nasal fossa.

cavity, pit and fissure,

n a cavity that begins in microscopic faults in the enamel. Caused by imperfect closure of the enamel.

cavity preparation,

n the orderly operating procedure required to remove diseased tissue and establish in a tooth the biomechanically acceptable form necessary to receive and retain a restoration.

cavity, prepared,

n the form developed in a tooth to receive and retain a restoration.

cavity, prepared, floor of,

n the flat bottom or enclosing base wall of a prepared cavity; on an axial plane it is called the
axial wall, and on the horizontal plane it is called the
pulpal wall.

The nasal cavity.

cavity, prepared, impression,

n a negative likeness of a tapered type of prepared cavity.

cavity, proximal,

n a cavity occurring on the mesial or distal surface of a tooth.

cavity, pulp,

n the space in a tooth surrounded by the dentin; contains the dental pulp. The part of the pulp cavity within the coronal portion of the tooth is the pulp chamber, and the part found within the root is the pulp canal, or root canal.

cavity, simple,

n a cavity that involves only one surface of a tooth.

cavity, smooth surface,

n a cavity formed by decay beginning in surfaces of teeth that are without pits, fissures, or enamel faults.

cavity toilet,

n G. V. Black's final step in cavity preparation. Consists of freeing all surfaces and angles of debris.

cavity varnish,

n See varnish, cavity.

cavity wall,

n See wall, cavity.