Glossary

Osteochondral

Dental The restoration is in occlusal contact with the opposing dentition in maximal intercuspal position and/or excursions

Occipito-cervico-thoracic

Original Development & Design Manufacturing

Original Equipment Manufacturer

operation free period

Less bleeding risk than other mechanical aortic heart valves, because of the lower amount of blood thinner required. results Hideki T. et al: 10-results of On-X bileaflet mechanical heart valve…..

see: One-piece implant

One-piece dental implants do not only consist of the artificial root, but are also firmly connected to the abutment that supports the dental crown. Advantages: – No micro-cleft with hygienic problems – Smaller implants possible, smaller wound, faster surgery – Simplified definitive care, cheaper Disadvantages – Insertion divergences (can be corrected in some systems by …

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Dental An abutment that connects into the implant without the use of an additional screw. The abutment can be retained by cements, friction (press-fit), or screw threads.

Dental The implant in which the endosseous and transmucosal portions consist of one unit which presents a surface without a joint to the tissues.

Dental Syn.: Nonsubmergible implant, single-stage implant. An endosseous dental implant designed to be placed following a one-stage surgery protocol. The implant is designed with a transmucosal coronal portion. Usually the transmucosal portion and the implant are one piece with no microgap.

Augmentation by placing autogenous bone and/or a bone replacement graft on or over bone to increase length and/or width.

“Oral” relates to the mouth.

Epithelial lining of the oral cavity continuous with the skin of the lips and mucosa of the soft palate and pharynx. The oral mucosa consists of: 1. Masticatory mucosa: Mucosa of the gingiva and hard palate. 2. Specialized mucosa: Mucosa of the dorsum of the tongue. 3. Lining mucosa (Syn.: Alveolar mucosa): The remaining mucosa …

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Organoids are multicellular structures that can be derived from adult organs or pluripotent stem cells. Early versions of organoids range from simple epithelial structures to complex, disorganized tissues with large cellular diversity.  

Dental Any implant used during orthodontic treatment as anchorage for orthodontic tooth movement.

The term refers to the direct structural and functional connection between living bone and the surface of a load-bearing (Albrektsson et al. in 1981) artificial implant. A more recent definition (by Schroeder et al.) defines osseointegration as “functional ankylosis (bone adherence)”, where new bone is laid down directly on the implant surface and the implant …

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A fully differentiated cell that originates in the embryonic mesenchyme and, during the early development of the skeleton, functions in the formation of bone tissue. Osteoblasts synthesize the collagen and glycoproteins that form the bone matrix, and also produce inorganic salts. With growth, they develop into osteocytes.

Large multinucleated cell, arising from mononuclear precursor of the hematopoietic lineage, that functions in the breakdown and resorption of osseous tissue.

Osteoconduction occurs when the bone graft material serves as a scaffold for new bone growth that is perpetuated by the native bone. Osteoblasts from the margin of the defect that is being grafted utilize the bone graft material as a framework upon which to spread and generate new bone. In the very least, a bone …

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An osteoblast that has become embedded within the bone matrix, occupying a flat oval cavity (bone lacuna). Cells found in bone lacunae send, through canaliculi, slender cytoplasmic processes that make contact with processes of other osteocytes.

see: Distraction osteogenesis

Osteoinduction involves the stimulation of osteoprogenitor cells to differentiate into osteoblasts that then begin new bone formation. The most widely studied type of osteoinductive cell mediators are bone morphogenetic proteins (BMPs).  

De novo production of bone out of pluripotent reserve cells (stem cells), they are present in perivascular tissue and bone and they may activated through morphogene factors. Osteoinductive substances must lead to an ektope bone building at an extraskeletal place.

Osteolysis is an active resorption of bone matrix by osteoclasts. Although osteoclasts are active during the natural formation of healthy bone the term “osteolysis” specifically refers to a pathological process. Osteolysis may occur around implants by inflammation, immunological response, tumors, cysts or changes in the bone’s structural load.

An undifferentiated cell that possesses the ability to transform into a bone forming cell.

Osteopromotion involves the enhancement of osteoinduction without the possession of osteoinductive properties. For example, enamel matrix derivative has been shown to enhance the osteoinductive effect of demineralized freeze dried bone allograft (DFDBA), but will not stimulate new bone growth alone.

Any surgical procedure in which bone is transected or cut.

Dental Removable partial or complete denture, which may be implant-supported or implant-tissue-supported. The prosthesis is retained by attachments.

Modification of the surface oxide properties of titanium implants by alteration of the oxide layer thickness.