Fixed Prosthodontics Research Articles

In vivo evaluation of the role of carbonate ion in hydroxyapatite for bone remodeling

In vivo evaluation of the role of carbonate ion in hydroxyapatite for bone remodeling

Investigation of the relationship between psychosocial stress and temporomandibular disorder in adults by measuring salivary cortisol concentration: A case-control study.

Background/Purpose of the Study:Psychological factors, particularly psychosocial stress, have been implicated as risk indicators for temporomandibular disorder (TMD). The aim of this study was to assess any differences in salivary cortisol concentration, scores of perceived stress scale (PSS), and scores of depression and distress between TMD patients and matched controls.Materials and Methods:This case-control study comprised two groups; the patient group consisted of 60 patients attending the Department of Fixed Prosthodontics at the Faculty of Dentistry who met the inclusion criteria (42 females and 18 males aged 19–44), whereas the control group was selected to match the patient group in number, age and sex. Two questionnaires were used for stress assessment: The PSS 10 and the psychosocial measure of Research Diagnostic Criteria (RDC) for TMD axis II. Salivary cortisol levels were measured by a competitive immunoenzymatic colorimetric method. Data were analyzed using SPSS 17. Descriptive statistics, one-way ANOVA test, and independent t-test were used.Results:This study showed statistically significant differences between the patient group and the control group at the three measures of psychosocial stress (P < 0.05). Increased occurrence of this disorder in women has been observed.Conclusion:Psychosocial stress plays an important role in the etiopathogenesis of TMD. Women are at increased risk of TMD when compared to men. Sub-types TMD patients approximately have the same level of stress. Muscle disorders were the most common.

Consensus Statements and Recommended Clinical Procedures Regarding Restorative Materials and Techniques for Implant Dentistry

No abstract available.

Students’ Perceptions of Materials and Techniques Used at European Dental Schools in the Education of Fixed Prosthodontics

The aim of this study was to explore the materials and procedures used by students in dental schools across Europe for teaching fixed prosthodontics. An online questionnaire, containing twenty-eight dichotomous, multiple-choice, and Likert scale rating questions, was sent to students in forty dental schools. After excluding dental schools in which less than 10 percent of the students responded, 775 questionnaires from ten schools remained for statistical analysis. Among these respondents, acrylic resin teeth were said to be the most commonly used material during preclinical practice (46-96 percent), and use of extracted teeth varied from 8 to 65 percent. At nine of the ten institutions, metal-ceramic was reported to be most commonly used for fixed dental prostheses. There was large variation in the type of finish line for a metal-ceramic fixed dental prosthesis: students at five institutions reported using a shoulder finish line, three a chamfer finish line, and two a shoulder-bevel finish line. A similar variation was observed with regard to the final cementation of metal-ceramic fixed dental prostheses: students at four institutions reporting most frequently using glass ionomer cement, with three using zinc phosphate cement and three using carboxylate cement. The responding European dental students varied considerably in their opinions about whether they were preclinically properly trained for the first preparation on a patient and in their overall rating of their education in fixed prosthodontics. Responding students in the United Kingdom, Sweden, and Nijmegen, The Netherlands, rated their fixed prosthodontics training overall the highest. Overall, this study found a wide variation amongst dental schools with regard to their education in fixed prosthodontics and their rating of this teaching.

Esthetic considerations related to bone and soft tissue maintenance and development around dental implants: Report of the Committee on Research in Fixed Prosthodontics of the American Academy of Fixed Prosthodontics

In recent years the frequency of and esthetic demand for implant restorations in the esthetic zone has increased. Recent literature has revealed numerous consistent trends which may aid the clinician in achieving predictable esthetics. Maintaining generous facial bone by judicious placement as well as by using implants with diameters of less than 4 mm appears to be beneficial. Avoiding adjacent implants in the esthetic zone while maintaining an implant to tooth distance of between 2 mm and 4 mm seems to aid in bone and soft tissue maintenance. Abutment connections in which the abutment is narrower than the implant offer distinct advantages, most notably increased bone heights. Also, provisional restoration, especially early in treatment provides long-term esthetic benefits.

Fabrication of Master Cast for Fixed Prosthodontics: Step-by-Step Procedural Videos

OPEN ACCESSJanuary 4, 2012Fabrication of Master Cast for Fixed Prosthodontics: Step-by-Step Procedural Videos Rainier M. Adarve, DMD, MS, MHPE, Luther Ison, CDT Rainier M. Adarve, DMD, MS, MHPE University of Minnesota Google Scholar More articles by this author , Luther Ison, CDT University of Minnesota Google Scholar More articles by this author https://doi.org/10.15766/mep_2374-8265.9068 SectionsAbout ToolsDownload Citations ShareFacebookTwitterEmail AbstractAfter taking final impressions for fixed prosthodontics, dental students should be able to pour up their impressions and fabricate master casts to complete the process of full coverage crown treatment. These procedures require knowledge of their steps as well as skill to perform them. This resource contains a set of instructional videos showing the process of fabricating a master cast for fixed prosthodontics. The resource is primarily intended to teach dental students the laboratory components involved in full coverage crown restoration. Twelve short videos have been produced and packaged together to depict the step-by-step sequence of master cast fabrication. The resource has an interface that allows students to watch the videos with full control. They can pause, forward, and play back while watching. The interface also provides students with the ability to read and scroll through the narrative description of the procedure while watching a video clip. This resource has been very helpful in aiding dental faculty with their teaching. Faculty use the resource to demonstrate the details of the steps while allowing the students to watch multiple times. The resource standardizes approach and technique, thereby reducing any confusion students might have experienced due to the varying techniques shown by multiple dental faculty in a large class setting. The resource also serves as an advance organizer that gives students a good overview, thus shortening the time required to explain the material to them. Additionally, the resource can serve as a reference for students to review procedures when needed. Educational Objectives By the end of this session, learners will be able to: Describe the steps in fabricating a master cast for fixed prosthodontics.Perform the following procedures: boxing the final impression, pouring the final impression, trimming the master cast, preparing the removable die, and pouring the base of the master cast.Demonstrate the use of the pindexing machine.Demonstrate die trimming. Sign up for the latest publications from MedEdPORTAL Add your email below FILES INCLUDEDReferencesRelatedDetails FILES INCLUDED Included in this publication: Instructor's Guide.pdf Data Folder Images Folder Index.html Index.swf Project Folder Video Folder To view all publication components, extract (i.e., unzip) them from the downloaded .zip file. Download editor’s noteThis publication may contain technology or a display format that is no longer in use. CitationAdarve RM, Ison L. Fabrication of Master Cast for Fixed Prosthodontics: Step-by-Step Procedural Videos. MedEdPORTAL. 2012;8:9068. https://doi.org/10.15766/mep_2374-8265.9068 Copyright & Permissions© 2012 Adarve and Ison. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-No Derivatives license.KeywordsDie TrimmingPindexWorking CastMaster CastFull Crown Disclosures None to report. Funding/Support None to report. Loading ...

Mounting casts on an articulator using interocclusal records

aVisiting Assistant Professor, Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, ChristianAlbrechts University; Assistant Professor, Department of Fixed Prosthodontics, Faculty of Dentistry, University of Aleppo. bProfessor and Chairman, Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, ChristianAlbrechts University. (J Prosthet Dent 2008;100:408-409) An accurate transfer of the intraoral maxillomandibular relationship to the articulator is essential for the fabrication of a prosthetic restoration. When the teeth do not offer vertical and horizontal stability between the arches, an interocclusal record is needed to relate the casts.1 However, if casts simply rest in the interocclusal record (IOR) during mounting, some movement may occur during application of the mounting stone or while the stone sets. Consequently, the mounting will be inaccurate. To avoid this problem, different procedures have been described which include holding the casts by hand2 or using rubber bands to secure the casts.3,4 However, the previously described procedures may result in an uncontrolled compressive force on the IOR and/or in a horizontal movement. This article describes a technique to mount casts using interocclusal records with no significant changes to the recorded maxillomandibular relationships, and is applicable for records made using elastomeric materials.

Statistics of Fixed Prosthetic Restorations at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Statistics of Fixed Prosthetic Restorations at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Clinical survey of TMD patients in the Department of Fixed Prosthodontics, Iwate Medical University Dental Hospital over the last 5 years

Clinical survey of TMD patients in the Department of Fixed Prosthodontics, Iwate Medical University Dental Hospital over the last 5 years

Statistics of Examined Patient at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Statistics of Examined Patient at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Statistics of Fixed Prosthetic Restorations at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Statistics of Fixed Prosthetic Restorations at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Contemporary Fixed Prosthodontics, 3rd Edition

This 868 paged, 2800 black and white illustrated, A4 sized textbook, edited by the above authors with contributions from 15 experts, has hit the bookshop and library some 6 years after the 2nd Edit...

Statistics of Fixed Prosthetic Restorations at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Statistics of Fixed Prosthetic Restorations at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Clinical Evaluation of Full Coverage Crowns Ten Years after Placement

Purpose : The goal of this study was to clarify the frequency and reasons for crown failure, based on the longevity and quality of full coverage crowns evaluated in 226 patients.Materials and Methods : Of a total of 529 patients who received full coverage crowns between 1980 and 1987 at the student clinic, 226 (42.7%) responded to a request to attend a recall examination. The crowns were fabricated and delivered in a uniform way according to the students' clinical manual used in the Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University.Results : The 226 participants (61 men and 165 women with a mean age of 41.6 years) attended a recall examination between 1996 and 1997. Periodontal pocket depth was 2.2±0.1 mm (mean±S.D.) at the initial examination and 2.2±0.8 mm (mean±S.D.) at the recall examination. The gingival index at the initial visit indicated that 90.3% of recall subjects had either slight gingival inflammation or none at all. A 10-16 year follow-up examination on the 388 crowns revealed that 38 crowns (9.8%) were lost or replaced due to periodontal disease, caries, and/or fracture. Of the failed crowns, 19 abutments were extracted, 11 crowns were removed and remade as an abutment of a fixed bridge, and 8 crowns were replaced by new crowns. The survival rates of the crowns at 5, 10 and 16 years after placement were 96.9, 93.3, and 84.9%, respectively.Conclusion : Although the recall rate of this follow-up study was low, it is suggested that the periodontal status at the initial stage of treatment played an important role in achieving a high survival rate of the crown. Following an approved procedural manual together with a fabrication manual and careful checking by a senior instructor were also thought to contribute to the excellent survival rate of the crowns.

Statistics of Fixed Prosthetic Restorations at the Department of Fixed Prosthodontics in Showa University Dental Hospital

Statistics of Fixed Prosthetic Restorations at the Department of Fixed Prosthodontics in Showa University Dental Hospital

IMPROVING THE QUALITY OF FIXED PROSTHODONTIC SERVICES

I have discussed only the three problems most frequently mentioned by laboratory technicians in the Lab Management Today survey. In my opinion, there are many more areas in fixed prosthodontics that need attention. To achieve this, we must improve the quality of the procedures we use in creating fixed prostheses. Laboratory technicians observe the quality of impressions, tooth preparations and interocclusal records that are sent to them by the dentists with whom they work. Their statements about the need for improvement on several of the aspects of the clinical procedure are of concern. It is dentists' professional responsibility to upgrade their clinical techniques so that they produce high-quality impressions of adequate tooth preparations and transfer information about the proper interocclusal relationship to the dental technician.

American Academy of Fixed Prosthodontics founded in 1952

American Academy of Fixed Prosthodontics founded in 1952

First two-year complications of fixed partial dentures, eight units or more. Swedish Guarantee Insurance claims

This study is an analysis of fixed partial dentures (FPDs), 8 units or more, that failed or suffered severe complications within the first 2 years after cementation. The material consists of claims to the Swedish Gurantee Insurance for Fixed Prosthodontics. Claim reports, radiographs, etc. were available. Over a 6-month period, 36 FPDs were sampled, 34 of which were made by general practitioners. The sampling resulted in 41 complications in 26 maxillary and 10 mandibular FPDs, 29 of which were made in metal-ceramics. The mean extension was 10.9 units, with an abutment/pontic ratio of 1.4; 40.6% of the abutments were root-canal treated and supplied with root posts. The complications were: metal framework fractures 41%, loss of retention 24%, porcelain fractures 17%, tooth/root fractures 10%, and miscellaneous 7%. The high proportion of metal framework fractures is not in accordance with other studies of FPD complications. No factor that could explain this high frequency could be identified. The fact that the selection of FPD complications applied to the first 2 years only, that the FPDs had been constructed by general practitioners, and that there were many root-canal-treated abutments and distal extension cantilever pontics, might be factors of importance.

Foundation restorations in fixed prosthodontics: Current knowledge and future needs

Purpose. The Ad Hoc Committee on Research in Fixed Prosthodontics established by the Academy of Fixed Prosthodontics publishes a yearly comprehensive literature review on a selected topic. The subject for this year is foundation restorations. Methods. Literature of various in vitro and in vivo investigations that included technical and clinical articles was reviewed to provide clinical guidelines for the dentist when selecting methods and materials for restoration of structurally compromised teeth. Topics discussed and critically reviewed include: (1) desirable features of foundation restorations, (2) foundations for pulpless teeth, (3) historic perspectives, (4) cast posts and cores, (5) role of the ferrule effect, (6) prefabricated posts, (7) direct cores, (8) foundation restorations for severely compromised teeth, (9) problems and limitations, (10) future needs, and (11) directions for future research. Conclusion. This comprehensive review brings together literature from a variety of in vitro and in vivo studies, along with technique articles and clinical reports to provide meaningful guidelines for the dentist when selecting methods and materials for the restoration of structurally compromised teeth. (J Prosthet Dent 1999;82:643-57.)

Evolution in Dental Education and Core Reconstruction for Fixed Prosthodontics

Evolution in Dental Education and Core Reconstruction for Fixed Prosthodontics