Dental implant prosthetics pdf
It can be concluded that internet explorer 10 for windows 8.1 pro the ability to repair prostheses directly in the mouth is also a deciding factor.
Technicians were taking into account metal (including zirconia) coping designs (36.3 covering only the distal-most part of the molar region with metal (24 using veneering composite resin (15.7 and using metal occlusal designs (15.1).
The questionnaire revealed several creative steps, based on laboratory considerations, being taken to prevent veneer chipping and fractures, a frequent and problematic prosthetic complication (Q12) (Figure 7 ).
Implant prosthetic complications include materials science-related factors, biomechanical and occlusion-related factors, and aesthetic factors.As stated in the description of the surveys purpose, it is hoped that dentists make use of this report to reaffirm prosthetic concepts and awareness so that there is achievement of predictable implant prosthetic treatment.Other cases requiring repair seen by technicians include facing discoloration (veneering composite resin) (17) (Figure 7 ) and design changes and modification requests associated with additional implants (13.9).It can be inferred that these results differ from actual complication trends because they constitute responses to cases sent to labs as repair requests, and because the survey targeted dental technicians.The questionnaire also revealed that reconstruction of occlusion because of wear or attrition of denture teeth (24.1) is a frequent issue leading to laboratory orders.Many other issues derived from factors such as dentists skill level and treatment planning knowledge are directly related to quality implant treatment, such as defects and inaccuracies in impression-taking and bite registration (29 inadequate establishment of appropriate occlusal schemes (17 and deficient or unreasonable prosthesis.Additionally, the frequency of prosthesis repairs, and repair costs cannot be ignored from a medical economic standpoint.Studies have pointed to issues related to degradation of materials science characteristics for veneering composites that are distinct from those associated with porcelain, including loss of glossiness because of the deterioration of the surface and discoloration, wear, and attrition due to long-term use.For cases involving a broad range of implant prostheses and occlusal reconstruction, if not all cases, the dental technicians should be a part of the team from the treatment planning stage to enable restoration-driven implant treatment in the true sense of the term.In particular, unsuitable implant locations, positions, and orientations can be prevented through appropriate preoperative examination and planning based on diagnostic wax-ups and surgical templates.Finally, technicians gave voice to the several requests for dentists, who are their customers, as a result of their daily experiences accomplishing implant laboratory procedures (Q14) (Figure 9 ).Moreover, there is no evidence that veneering composites are more resistant to fracture than porcelain (as they are more prone to chipping) 45,.In the future, it would be worthwhile to conduct follow-up surveys on the differences among veneering materials and prostheses as well as veneer material failure trends.This survey succeeded in identifying prosthetic problems by examining implant prosthetic complications from the dental technicians perspective.Of the problems and issues generally encountered on the laboratory side, compatibility precision, aesthetic issues, and occlusal issues each accounted for about one third of the total (Q9).It has become clear that no small number of laboratory work requests deal with these issues experienced by patients undergoing implant treatment because of changes over time in the area surrounding existing implant treatments that occasionally necessitate additional implants and superstructure design changes or modifications.Responses to this survey support the idea that this concept has been gaining popularity among technicians in recent years.As observed, implant location and orientation issues in particular not only complicate technical work, but may also cause a variety of complications after the initiation of loading.Although the literature includes reports indicating a greater incidence of chipping and fractures for veneering porcelain than hardened resin 45, 46 and for bridges than single crowns 26, 27, this questionnaire does not shed light on the relative repair rates for porcelain and composite resin.Generally speaking, there are many reports that indicate a high incidence of complications related to fixed prostheses involving abutment screw loosening, detachment of cement-retained crowns, and veneer (porcelain/composite resin) fracturing and damage.
While the literature includes reports of frequent IOD-related prosthetic complications such as attachment-related compromised retention, detachment or fracturing of denture teeth, relining, and attachment damage 25, 28, 29, this survey showed a somewhat different trend.
In short, the questionnaire suggested the possibility that inadequate awareness of prosthetics is making IOD complications in Japan more complex, with issues including the comparatively frequent use of resin bases, problems with implant location and orientation, and inadequate consideration of occlusion by dentists.
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