2016 Glossary - 60
removable partial denture frameworks or fixed metal frameworks.
refractory die n: a die made of a material that will not
deteriorate at the high temperatures used during firing or casting procedures.
refractory mold n: a mold made from refractory material into which metal is cast.
refractory periodontitis n: see under periodontitis.
refractory prosthodontic patient n: a patient in
whom it is difficult to achieve prosthetic success
even when the appropriate prosthesis is provided.
The patient may not be able to follow directions or
lacks adaptability to prosthodontic treatment.
regeneration n: regrowth of lost tissue.
* guided bone regeneration: refers to alveolar
ridge augmentation or bone redevelopment.
* guided tissue regeneration: techniques for redeveloping (regenerating) lost periodontal tissues.
registration (bite) n: a record of the occlusal relationship between the maxillary and mandibular jaws.
reimplantation n: replacement of a tooth into its socket after it is removed surgically or avulsed.
releasing incision n: an incision made at a right or
oblique angle to the main incision to relieve tension
on a mucoperiosteal flap and allow more flap reflection than the original incision allows.
relief n: placement of a measured amount of space in
an area under a denture base or removable partial
framework to eliminate tissue contact or pressure or
to make room for impression material.
relief area n: a delineated space created on the tissue
surface of a removable dental prosthesis to eliminate
contact with the tissue.
reline v: to replace the base material on the tissue side
of a removable dental prosthesis with new base material to correct the adaptation of the base to the tissue.
remodel n: the ongoing process by which bone is resorbed and replaced in a dynamic steady-state process that maintains the health of bone.
remount cast n: a cast made to facilitate remounting
the prosthesis on an articulator. Frequently done to
remount procedure n: a process in which prostheses
are replaced on an articulator after fabrication to refine occlusion.
remount record index n: a record made on an articulator component to allow remounting of the maxillary cast after processing.
resection n: excision (removal) of some portion of the
jaw, tooth root, or other maxillofacial structure. Typically done for the treatment of pathology.
residual abscess n: a persistent lesion that remains
from a prior infection. It often presents with a radiolucent area.
residual bone n: fraction of mandibular or maxillary
bone that remains after the teeth are removed or
residual ridge n: the superior portion of the remaining
bone with its overlaying soft tissue.
residual ridge crest n: the most superior portion of
the residual ridge.
residual ridge resorption n: the phenomenon of diminishing volume and density of the residual ridge
after the teeth are removed.
resilient attachment n: a special attachment intended
to give a combination tooth- and soft tissue-borne
removable dental prosthesis sufficient flexure so as
to allow for its placement without introducing unnecessary stress on the abutments.
resistance n: ability of a human, an organism, or an inert material to resist the damaging effects of chemical, microbiological, or mechanical agents.
resistance form n: features of a tooth preparation that
has at least 2 walls approaching parallelism and other walls allowing for thickness of restorative material.
resolution n: (1) in dentistry or medicine: the return to
health or improvement of a pathologic state; (2) In
digital imaging: a pixel, pel, or picture element that is
the smallest recognizable point found in the master
resorption n: the progressive loss of soft or hard tissue
due to physiologic or pathologic processes.