Metal-Ceramic Fixed Prosthodontics - An Obsolete Therapeutic Solution?

2014 ◽  
Vol 614 ◽  
pp. 134-139
Author(s):  
Emilio Jiménez-Castellanos
Keyword(s):  
Meta Analysis ◽  
Survival Rates ◽  
Form And Function ◽  
Second Stage ◽  
Fixed Prosthodontics ◽  
Metal Ceramic ◽  
Abutment Teeth ◽  
Fixed Prosthesis ◽  
And Function ◽  
Space Requirements

In this paper I will try to analyze the effectiveness of the techniques in metal-ceramic fixed prosthesis, recalling basics concepts like binding mechanisms between metal and ceramics or the minimum space requirements in the preparation of the abutment teeth to achieve adequate form and function. In a second stage I will try to establish their prognostic indications through these restorations based on survival rates published in systematic reviews and meta-analysis finally I will try to discuss different designs in fixed bridges and the possible indications of each one.

scholarly journals Comparative Evaluation of Esthetic Materials Used for Fixed Partial Prosthesis Placed On Vital Abutments on The Periodontal Status: A One Year Retrospective Follow-Up

2019 ◽  
Vol 3 (5) ◽  
pp. 179-184
Author(s):  
Shreya Shetty ◽  
Karunakar Shetty ◽  
Raghad Tayeb ◽  
Jumana Abdou ◽  
Badariya Fetaihi ◽  
...  
Keyword(s):  
Periodontal Tissues ◽  
Fixed Prosthodontics ◽  
Probing Depth ◽  
Long Term Effect ◽  
Ethical Committee Approval ◽  
Abutment Teeth ◽  
Fixed Prosthesis ◽  
Materials Used ◽  
One Year

BACKGROUND: The replacement of missing teeth with fixed partial dentures is largely dependent upon the health and stability of the surrounding periodontal structures. FPDs are often prepared on vital teeth as abutments. Esthetic materials have become popular in fixed prosthodontics today. AIM: The present study aimed to assess the long term effect and tissue responses of various types of fixed partial prosthesis placed on vital abutment teeth on the periodontal parameters both clinically and radiographically. MATERIALS AND METHOD:  Following ethical committee approval, the study group comprised of 87 abutment teeth in 41 systemically healthy patients (24 males and 17 females) aged between 18 – 45 years who had received 3 unit fixed prosthesis(IPS empress, PFM or zirconia), having equigingival margins using vital teeth as abutments. The following parameters were assessed at the time of bridge placement and 1 year follow up – CAL, Probing depth, Distance between CEJ/ cervical crown margin and alveolar crest of the abutment teeth(radiograph). RESULTS: Statistical analysis carried out by SPSSV22 software revealed significant changes in clinical parameters with IPS empress and radiographic parameters with PFM and Zirconia from time of bridge placement till the 1 year follow up.(P<0.05). CONCLUSION: There seemed to be favorable responses of the periodontal tissues to the various esthetic materials used on vital abutments of FPDs.

scholarly journals Comparative Evaluation of Porcelain Fused to Metal (PFM) Material used for Fixed Partial Prosthesis Placed on Vital & Non-vital Abutments on the Periodontal Status – A Two Year Retrospective Follow-up

2020 ◽  
pp. 85-92
Author(s):  
Shreya Shetty ◽  
Karunakar Shetty ◽  
Othman Wali ◽  
Raghad Tayeb ◽  
Jumana Abdou ◽  
...  
Keyword(s):  
Phase 1 ◽  
Baseline Phase ◽  
Periodontal Tissues ◽  
Fixed Prosthodontics ◽  
Probing Depth ◽  
Ethical Committee Approval ◽  
Abutment Teeth ◽  
Fixed Prosthesis

Objective: Sound periodontal foundation of abutment teeth is essential for successful restorative therapy and also for long-term success of prosthodontic restorations. Porcelain fused to metal (PFM) has been a popular choice of novel esthetic material in fixed prosthodontics over the last few decades. The present study aimed to assess the long term effect and tissue responses of fixed partial prosthesis using PFM material on vital and non- vital abutments on the periodontal parameters both clinically and radiographically. Methodology: Following ethical committee approval, the study group comprised of 86 abutment teeth in 41 systemically healthy patients (24 males and 17 females) aged between 18 – 45 years who had received 3 unit fixed prosthesis made of PFM, having equigingival margins using vital and non-vital abutments. The following parameters were assessed at baseline, phase 1, 3 and 4 (1 year follow up) – CAL, Probing depth, Distance between CEJ/ cervical crown margin and alveolar crest of the abutment teeth (radiograph). Results: Statistical analysis carried out by SPSSV22 software revealed no significant changes in probing depth and CAL (p>0.05) and significant changes in radiographic bone levels (p<0.05) in vital abutments whereas significant changes in probing depth and CAL from baseline to the end of 2 years (p<0.05) with no changes in radiographic parameters (p>0.05) with non vital abutments. However, significant differences were observed between vital and non vital abutments with regard to probing depth at the end of 2years, CAL and radiographic bone levels at 6months, 1 year and 2 years (p<0.05) Conclusion: The response of the periodontal tissues to the PFM material used on fixed prosthesis on both vital and non vital abutment teeth although favorable, were marginally better in vital abutments.

scholarly journals Reverse Cast Metallic Core Based on the Original Prosthetic Crown

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Eliana de Souza Bastos Mazuqueli Pereira ◽  
Fernando Accetturi ◽  
Rachel Gomes Eleutério ◽  
Daniela Vieira Buchaim ◽  
Rogério Leone Buchaim ◽  
...  
Keyword(s):  
Dental Care ◽  
Clinical Case ◽  
Radiographic Examination ◽  
Metallic Core ◽  
Form And Function ◽  
Dental Anatomy ◽  
Metal Ceramic ◽  
And Function ◽  
Ceramic Crown ◽  
Operational Time

The dental crown can be restored using the root in clinical situations where the dental remnant allows adequate anchorage by the use of an intraradicular retainer. After endodontic treatment, reconstruction of the dental anatomy depends on correct planning and the type of restoration to be used. This requires reestablishment of form and function with creation of anchoring features, avoiding detachment and favoring the distribution of forces, thus preventing fracture of the remnant due to functional and parafunctional forces applied on the tooth. This paper reports the clinical case of a patient who sought dental care for a full metal-ceramic crown with a cast metallic core with reduced length that had been detached from tooth 24. After clinical and radiographic examination, root integrity was verified. The patient was offered reconstruction with a cast metallic core of satisfactory length, providing adequate retention and support, with reutilization of the original prosthetic crown, serving as a reverse template of the coronal portion of this new core, providing reduction in costs and operational time.

scholarly journals Efficiently Plumping the Deficient! Pontic Site Development

2014 ◽  
Vol 4 (3) ◽  
pp. 173-177
Author(s):  
Sabita Ram ◽  
Ashvini Mukul Padhye ◽  
Aditi Ashok Rathod ◽  
Saili Chandavarkar
Keyword(s):  
Soft Tissue ◽  
Treatment Plan ◽  
Class Iii ◽  
Ridge Augmentation ◽  
Form And Function ◽  
Site Development ◽  
Fixed Prosthesis ◽  
And Function ◽  
Missing Tooth ◽  
Wedge Technique

ABSTRACT Replacing a missing tooth in a maxillary anterior esthetic zone displaying a Seibert's class III ridge defect is a big challenge in the field of perioesthetics. In order to achieve maximum esthetics, form and function, an ideal pontic should have a natural emergence profile and support the labial soft tissue as well as the adjacent papillae. This is of paramount importance, especially if the patient has a high smile line. Augmentation protocols differ based on the treatment plan for implants or fixed prosthesis. The most popular techniques for soft tissue ridge augmentation for Seibert's Class III ridge defects include the roll technique, the wedge technique and the pouch technique among others. This article presents a case of an 18-year-old female patient with a challenging Seibert's Class III ridge defect treated for pontic site development using a combination of the pouch and the roll technique followed by a fixed prosthesis with ovate pontics. How to cite this article Rathod AA, Padhye AM, Ram S, Chandavarkar S. Efficiently Plumping the Deficient! Pontic Site Development. J Contemp Dent 2014;4(3):173-177.

Scanning tunneling microscopy (STM) of DNA and RNA

1989 ◽  
Vol 47 ◽  
pp. 34-35
Author(s):  
Patricia G. Arscott ◽  
Gil Lee ◽  
Victor A. Bloomfield ◽  
D. Fennell Evans
Keyword(s):  
Molecular Structures ◽  
Inorganic Materials ◽  
Resolving Power ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Form And Function ◽  
Dna And Rna ◽  
Calf Thymus ◽  
And Function ◽  
The Relationship

STM is one of the most promising techniques available for visualizing the fine details of biomolecular structure. It has been used to map the surface topography of inorganic materials in atomic dimensions, and thus has the resolving power not only to determine the conformation of small molecules but to distinguish site-specific features within a molecule. That level of detail is of critical importance in understanding the relationship between form and function in biological systems. The size, shape, and accessibility of molecular structures can be determined much more accurately by STM than by electron microscopy since no staining, shadowing or labeling with heavy metals is required, and there is no exposure to damaging radiation by electrons. Crystallography and most other physical techniques do not give information about individual molecules.We have obtained striking images of DNA and RNA, using calf thymus DNA and two synthetic polynucleotides, poly(dG-me5dC)·poly(dG-me5dC) and poly(rA)·poly(rU).

Re-examining the form and function of superstition

2011 ◽  
Author(s):  
Scott Fluke ◽  
Russell J. Webster ◽  
Donald A. Saucier
Keyword(s):  
Form And Function ◽  
And Function

A New Form and Function for Personality

2013 ◽  
Author(s):  
Joshua Wilt ◽  
William Revelle
Keyword(s):  
Form And Function ◽  
New Form ◽  
And Function
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