Category: H

Any plane passing through the body at right angles to both the median and frontal planes, thus dividing the body into upper and lower parts; in dentistry, the plane passing through a tooth at right angles to its long axis. Level to the ground. A transverse plane at right angles to the vertical axis of…

Overjet. The projection of the maxillary anterior or posterior teeth beyond their antagonists in a horizontal direction.  

Horizontal surgical cut in bone.  

Homogeneous graft, homologous graft. A graft taken from one human subject and transplanted into another. The graft of an organ or tissue from a donor to a recipient of the same species, e.g. from one person to another. Tissue from one person transplanted to another person of the same species but of different genetic makeup.…

A root‐form dental implant with a central internal channel penetrating the implant body from/at its apical aspect.  

The study of pathological changes within the structures of tissues at the microscopic level. The branch of medical science that studies the microscopic structure, composition, and anatomy of diseased tissues. The exploration of pathological tissues at a minuscule scale. Histopathology is a subfield of histology that focuses on the impact of disease on the microscopic…

The quantitative study of the microscopic organization and structure of a tissue (e.g., bone, soft tissue, and vascularity, from histologic specimens; involves a large range of measurements, including numbers, length, surface area, volume, angles, and curvature), especially by computer‐assisted analysis of images acquired from a microscope. The quantitative analysis of tissue structure (e.g., its components,…

That part of anatomic study that deals with the minute structure, composition, and function of the tissues. The science that studies microscopic structures of living things, histological. The study of the anatomy of tissue cells and minute cellular structure. Science of tissues, including their cellular composition and organization. The branch of medical science that studies…

A large phagocyte (macrophage) in the connective tissue derived from circulating monocytes. It has additional functions including antigen processing and immunoregulation. A macrophage of the connective tissue, involved in tissue defence. A fixed macrophage, i.e. one that is stationary within connective tissue.  

A low molecular weight, bioactive amine that causes smooth muscle contraction of bronchioles, increased capillary permeability, and increased secretions by the nasal and bronchial mucous glands. Released primarily from mast cells and basophils. 1H-Imidazole-4-ethanamine. A depressor amine derived by enzymatic decarboxylation of histidine. It is a powerful stimulant of gastric secretion, a constrictor of bronchial…