Category: R

A risk factor that cannot be modified, i.e., genetic factors, gender, age.  

The process by which qualitative or quantitative assessments are made, regarding the likelihood of adverse events occurring as a result of exposure to specified health hazards or absence of beneficial influences. A technique of epidemiological analysis used to identify those specific subgroups within a population that have a higher risk of acquiring a given disease.…

Oral nitrogen‐containing bisphosphonate used for the prevention and treatment of osteoporosis and treatment of Paget’s disease. Its mechanism of action involves the inhibition of osteoclast formation and activity.  

A method of investing such that no containment is used that may restrict expansion. A paper or plastic cylinder may be used that is less restricting than a metal cylindrical casting ring.  

Phenomenon that occurs due to inaccurate calibration or failure of one or more detector elements in a CT scanner. It occurs close to the isocenter of the scan, and is usually visible on multiple slices at the same location. It is a common problem in cranial CT and CBCT.  

Stiffness or inflexibility of an object. Stiffness or inflexibility, chiefly that which is abnormal or morbid; rigor. Resistance to change; inflexibility. Also, maintaining a physical stance or posture against all efforts to be moved. In psychiatry, excessive resistance to change. Extreme muscles tenseness. The fact of being rigid, bent or not able to be moved.…

Clinical term that implies absence of observed mobility, process of becoming fixated or rendered immobile, inflexible; applicable to a prosthesis or prosthesis component.  

Part of a removable prosthesis that connects its parts or, in regards to a fixed prosthesis, a portion of the device that connects the retainer to a pontic in such a manner that no movement can occur.  

A surgical procedure involving the use of one or more corticotomies in order to mobilize one or more bony segments for purposes of expanding an atrophic edentulous ridge in a faciolingual dimension.  

Bone sounding, sounding. Penetration of anesthetized soft tissue in order to determine the topography of the underlying bone.