Effect of direct retainer design on dynamics of RPDH. ITOH
Indirect vs direct bonding of mandibular fixed retainers in orthodontic patients: Comparison of retainer failures and posttreatment stability. A 2-year fol... Introduction The objectives of this 2-arm parallel trial were to compare the numbers of failures of mandibular fixed retainers bonded with ind...
Anterior abutments that are considered poor risks may not be so freely used because of the problems involved in adding a new abutment retainer when the original one is lost. It is rational that such questionable teeth should be condemned in favor of more suitable abutments, even though the ...
When an occlusal force is applied to the pontic, it is delivered to the connector, retainer, and finally to the abutments and the surrounding bone structure by connecting the FPD and abutments together. The quality of the abutments and surrounding bone play a very important role in the ...
Direct retainerClaspIndirect retainerOcclusal restRemovable partial dentureThe clasp assemblies act as the direct retainers of the RPDs without precision attachments. In this chapter, infrabulge and suprabulge of clasp assemblies used in RPD design are described with their specific features. Components ...
The designs differed only in terms of the type of the retainer (clasp type) and tooth support (rest location). A total of 272 patients with Kennedy class I and class II edentulous conditions were assigned on a random basis to one of the treatment groups, 134 to receive a removable ...
Factors that augment the role of direct retainers in mandibular distal-extension removable partial denturesSeveral features of RPD design that augment direct retainer design were identified. They are as follows: 1. 1. The duplication of direct retainer function by other prosthesis components 2. 2. ...
Occlusal and facial digital images made before and after cycling were measured (mm) for direct retainer deformation by using computer-imaging software (Scion Image 1.62). Student t tests (伪=.05) were performed for statistical comparisons. Results A significant difference in deformation between ...
In total, four RPD frameworks (two resilient and two rigid) were fabricated for Case 1 with a conventional telescope retainer and attachment-retained telescopic retainer (ARTR) groups. A vertical static load of 280 N was applied, and strain values obtained from the strain gauges were recorded....
It also provides indirect retention and thereby eliminates the need for a conventional indirect retainer. Patient comfort with an RPD with a cingulum bar seems acceptable because the connector forms one unit with the anterior teeth. The replacement of a lost natural anterior tooth with a denture ...