Category: O

The inner layer of the periosteum; it contains osteoblasts that become active during repair of  fractures.  

The layer of connective tissue cells at the outer edge of the pulp where they produce the dentin of the tooth.  

Stricture of the larynx owing to congenital bands or membranes, foreign bodies, tumors, scarring following ulceration as in diphtheria and tertiary syphilis, penetrating wounds, or corrosive fluid. Patients experience dyspnea, especially on inspiration and exertion, often accompanied by stridor. Treatment depends on the cause. Tracheotomy is often necessary.  

The complex, hollow space in the temporal bone that consists of the vestibule, three semicircular canals, and cochlea, all filled with perilymph.  

Interference with fetal descent related to malposition, malpresentation, and cephalopelvic disproportion.  

Keratinization of the mucosa of the mouth to an unusual extent, or in locations normally not keratinized, as a result of an inherited autosomal dominant gene or the more common effect of tobacco and other carcinogens.  

The removal of a corneal scar and replacement with corneal tissue.  

Flushing of the mouth, teeth, and gums with fluids. This is done to remove plaque and to treat or prevent periodontal disease.  

A popular indicator developed in 1960 to determine oral hygiene status in epidemiological studies. The index consists of an oral debris score and a calculus score. Six indicator teeth are examined for soft deposits and calculus. Numerical values are assigned to the six indicator teeth according to the extraneous deposits present. The scores are added…

Involuntary loss of urine associated with overdistention of the bladder.