Biomaterial Database

A theoretical analysis of the mechanics of the Thompson dowel semiprecision intracoronal retainer. 1977

N S McLeod

An analysis has been made of the mechanics of the Thompson dowel retainer. The analysis locates the center of rotation during function and identifies the factors that affect its position. The degree to which the dowel should be relieved to permit unrestricted rotation has been established. The rationale of an occlusal bevel and the limits of its positioning have been analyzed. The importance of aligning the shelves of the dowel wells in two planes is emphasized and ways of handling the problem of disparity of shelf heights are given.

UI	MeSH Term	Description	Entries
D003737	Dental Cavity Preparation	An operation in which carious material is removed from teeth and biomechanically correct forms are established in the teeth to receive and retain restorations. A constant requirement is provision for prevention of failure of the restoration through recurrence of decay or inadequate resistance to applied stresses. (Boucher's Clinical Dental Terminology, 4th ed, p239-40)	Cavity Preparation, Dental,Cavity Preparations, Dental,Dental Cavity Preparations,Preparation, Dental Cavity,Preparations, Dental Cavity
D003781	Denture Retention	The retention of a denture in place by design, device, or adhesion.	Denture Stability,Retention, Denture,Stability, Denture
D003832	Denture, Partial, Removable	A partial denture designed and constructed to be removed readily from the mouth.	Removable Partial Denture,Denture, Removable Partial,Dentures, Removable Partial,Partial Denture, Removable,Partial Dentures, Removable,Removable Partial Dentures
D003834	Denture Precision Attachment	A precision device used for attaching a fixed or removable partial denture to the crown of an abutment tooth or a restoration. One type is the intracoronal attachment and the other type is the extracoronal attachment. It consists of a female portion within the coronal portion of the crown of an abutment and a fitted male portion attached to the denture proper. (Jablonski, Dictionary of Dentistry, 1992, p85; from Boucher's Clinical Dental Terminology, 4th ed, p264)	Intracoronal Attachment,Precision Attachment, Denture,Slotted Attachment, Dental,Attachment, Dental Slotted,Attachments, Dental Slotted,Dental Slotted Attachment,Dental Slotted Attachments,Denture, Precision Attachment,Slotted Attachments, Dental,Attachment Denture, Precision,Attachment Dentures, Precision,Attachment, Denture Precision,Attachment, Intracoronal,Attachments, Denture Precision,Attachments, Intracoronal,Denture Precision Attachments,Dentures, Precision Attachment,Intracoronal Attachments,Precision Attachment Denture,Precision Attachment Dentures,Precision Attachments, Denture
D000044	Dental Abutments	Natural teeth or teeth roots used as anchorage for a fixed or removable denture or other prosthesis (such as an implant) serving the same purpose.	Abutments, Dental,Abutment, Dental,Dental Abutment
D012399	Rotation	Motion of an object in which either one or more points on a line are fixed. It is also the motion of a particle about a fixed point. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Clinorotation,Clinorotations,Rotations