scholarly journals OCCLUSAL TRAUMA OF IMPLANT-SUPPORTED METAL-CERAMIC CROWN: A CASE REPORT

2021 ◽  
Vol 74 (2) ◽  
pp. 371-374
Author(s):  
Olena O. Fastovets ◽  
Roman A. Kotelevskyi ◽  
Yurii S. Huriev ◽  
Serhii S. Kobyliak
Keyword(s):  
Dental Implant ◽  
Periodontal Ligament ◽  
Protective Action ◽  
Literature Analysis ◽  
Reverse Torque ◽  
Incisal Edge ◽  
Metal Ceramic ◽  
Ceramic Crown ◽  
Natural Tooth ◽  
Supported Metal

In this article there is a clinical case of occlusion trauma of implant-supported metal-ceramic crown for prosthetics of central incisor. Its uniqueness is the possibility to save dental implant after acute occlusion impact, which was strong enough to break ceramic facing of fixed denture, but not able to destroy bone and implant components. The occlusion force located at the incisal edge of the crown induced a reverse torque to the implant and did not result in its failure or bone resorption. In a year after repeated fixed prosthetics, the results of clinical examination proved absence of any problem with osseointegration. Literature analysis lets us to suggest, that the phenomenon was caused by protective action of cortical bone around of dental implant. Besides, in the case of natural tooth, the bone is suddenly compressed against the conical root; it transfers occlusal breaking to the supporting periodontal ligament. A dental implant has no periodontal ligament but can have a rough surface that may preclude implant failure.

scholarly journals Immediate Placement of Dental Implant on Freshly Extracted Socket: A Case Report From B. P. Koirala Institute of Health Sciences, Dharan

2017 ◽  
Vol 2 (2) ◽  
pp. 230-233
Author(s):  
Bishal Babu Basnet
Keyword(s):  
Dental Implant ◽  
Health Sciences ◽  
Immediate Placement ◽  
Metal Ceramic ◽  
Healing Phase ◽  
Immediate Implant ◽  
Implant Therapy ◽  
Implant Dentistry ◽  
Ceramic Crown ◽  
Front Tooth

 Immediate placement of implants into the freshly extracted tooth sockets is viable and preferable option in many cases who have to wait for healing phase in traditional implant therapy. This has been a great boon for the implant dentistry. In this case a young lady who had unusual trauma to her upper front tooth had immediate implant placed on the same day of extraction and metal-ceramic crown restored her esthetics after about 4 months. With extensive treatment planning and execution of surgical and prosthetic phases of implant therapy, immediate placement of dental implant gives wonderful results. Birat Journal of Health Sciences Vol.2/No.1/Issue 2/ Jan - April 2017, page: 230-233

Cultivation of Periodontal Ligament Fibroblasts on Dental Implant Materials and Enzymatically Debrided Teeth

1974 ◽  
Vol 53 (6) ◽  
pp. 1368-1376 ◽  
Author(s):  
T.K. Huard ◽  
L.F. Arnold ◽  
P. Baram
Keyword(s):  
Rhesus Monkey ◽  
Methyl Methacrylate ◽  
Dental Implant ◽  
Electron Micrographs ◽  
Periodontal Ligament ◽  
Scanning Electron Micrographs ◽  
Periodontal Ligament Fibroblasts ◽  
Implant Materials ◽  
Scanning Electron

Rhesus monkey periodontal ligament-derived fibroblasts were cultured on glass, Vitallium, poly(methyl methacrylate) and enzymatically debrided teeth. Scanning electron micrographs of these preparations and of the periodontal ligament surrounding normal and replanted teeth were compared. The fibroblasts cultured in vitro could organize on implant material and enzymatically debrided teeth to produce a network with fibers resembling those that are seen in the normal periodontal ligament.

Effect of Screw Channel Angulation on Reverse Torque Values of Dental Implant Abutment Screws

2019 ◽  
Vol 28 (9) ◽  
pp. 969-972
Author(s):  
Eric Hu ◽  
Anton Petrich ◽  
Glen Imamura ◽  
Christopher Hamlin
Keyword(s):  
Dental Implant ◽  
Screw Channel ◽  
Reverse Torque ◽  
Implant Abutment ◽  
Torque Values ◽  
Dental Implant Abutment

scholarly journals Effect of Incisal Porcelain Veneering Thickness on the Fracture Resistance of CAD/CAM Zirconia All-Ceramic Anterior Crowns

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Noha Badran ◽  
Sanaa Abdel Kader ◽  
Fayza Alabbassy
Keyword(s):  
Fracture Resistance ◽  
Testing Machine ◽  
Mode Iii ◽  
Nickel Chromium ◽  
Significant Difference ◽  
All Ceramic ◽  
Metal Ceramic ◽  
Cad Cam ◽  
Ceramic Crown

Statement of Problem. In some clinical situations, the vertical length of either a prepared tooth or an implant abutment is short, while the occlusal clearance to be restored by a porcelain crown is large. Incisal thickness of the veneering porcelain should be considered to prevent mechanical failure of the crown. Purpose. The aim of this study is to evaluate the effect of two different incisal veneering porcelain thickness on the fracture resistance of the anterior all-ceramic CAD/CAM zirconia crown system as compared with the conventionally used metal ceramic crown system. Method. CAD/CAM zirconia all-ceramic and metal ceramic crowns were fabricated on the prepared dies with standardized dimensions and designs using standardized methods according to the manufacturer’s instructions. All crowns were then adhesively luted with resin-based cement (Multilink cement system), subjected to thermal cycling and cyclic loading, and were loaded until fracture using the universal testing machine to indicate the fracture resistance for each crown material in each veneering thickness. Results. Statistical analysis was carried out, and the results showed that the fracture resistance of the nickel-chromium metal ceramic group was significantly higher than that of the CAD/CAM zirconia all-ceramic group. Also, the fracture resistance of crowns with 1.5 mm incisal veneering thickness was significantly higher than those with 3 mm incisal veneering thickness in both groups. Furthermore, there was no significant difference in the fracture mode of the two groups where 50% of the total specimens demonstrated Mode II (veneer chipping), while 35% demonstrated Mode I (visible crack) and only 15% demonstrated Mode III (bulk fracture). Conclusion. High failure load values were demonstrated by the specimens in this study, which suggest sufficient strength of both incisal veneering thickness in both crown systems to withstand clinical applications; however, the fracture patterns still underline the requirement of a core design that support a consistent thickness of the veneering ceramic, and it is recommended to conduct long-term prospective clinical studies to confirm findings reported in the present study.

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