Mechanical considerations for the implant tooth-supported fixed partial denture. J Prosthet Dent 1995;74

Breeding,; Dixon,; Sadler,; McKay,

doi:10.1097/00008505-199600530-00025

Cited by 2 publications

(3 citation statements)

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“…The left upper central and lateral incisors and the canine tooth of an otherwise healthy patient were extracted for periodontal reasons, cleaned off debris and stored at 4°C for a maximum of 48 h until use. Simulation of the traumatized PDL was provided around the freshly extracted natural lateral incisor (21–23). First, the entire root surface was coated with modeling wax (Dentsply, Weybridge, UK) using a dip‐wax technique, which resulted in an approximately 0.2–0.3 mm thick coating around the tooth.…”

Section: Methodsmentioning

confidence: 99%

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Biomechanical effects of splint types on traumatized tooth: a photoelastic stress analysis

Cengiz

Ataç

Çehrelį

2006

Dental Traumatology

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This study was undertaken to assess the effect of splint type on stresses occurring around traumatized tooth by photoelastic stress analysis. Three semi-rigid splint types--a wire-composite splint, fiberglass splint and titanium trauma splint--were utilized for comparisons. Extracted left upper central and lateral incisors and the canine tooth of an otherwise healthy patient were embedded equidistantly in photoelastic resin. For all cases studied, a static axial and 20 degrees oblique force of 100 N was applied on the lateral incisor in separate sessions. The experiments were undertaken without any splint application (unsplinted, control) after which the splints, adhesively bonded to the labial aspects of teeth, were consecutively tested. During each loading sequence, generation of isochromatic fringes was observed in the field of a polariscope, and photographed by a digital camera. Quantification of fringes was performed on magnified images, transferred to a PC. Under vertical loading, the highest stresses in the apical regions were observed for the unsplinted and ribbond-splint groups, whereas the lowest fringes occurred with the use of orthodontic wire as a splinting medium. Titanium trauma splint had absolutely no effect on reduction of stresses, as the fringe orders were slightly higher than the unsplinted lateral tooth. The use of orthodontic wire resulted in lowest fringe orders around the traumatized tooth.

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Section: Methodsmentioning

confidence: 99%

“…Several attempts were made to achieve approximately 50 μ m‐thick coating over the roots using different molds (CA 37; Cavex) and wax coatings. Finally, a vinyl polysiloxane adhesive was painted on the roots and allowed to dry for 5 min (22), and the coating was created in the best mold.…”

Section: Methodsmentioning

confidence: 99%

Biomechanical effects of splint types on traumatized tooth: a photoelastic stress analysis

Cengiz

Ataç

Çehrelį

2006

Dental Traumatology

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“…10 Additionally, natural teeth have a rapid movement and a linear one, whereas implants only have the linear movement. 11 The difference between teeth and implant movement leads to different patterns of stress and strain in the tooth, implant, and the surrounding structure, When an occlusal force is applied to a joined natural tooth–implant, the stress does not evenly distribute in the prosthesis resulting in a destructive load on the implant, abutments, and the entire prosthesis. 12 Additionally, complications such as an increased incidence of caries at the crown margin, tooth intrusion, and mechanical part fracture have been described.…”

Section: Introductionmentioning

confidence: 99%

Stress Analysis of Endodontically Treated Tooth–Implant Different Connectors Designs in Maxillary Posterior Region: A Finite Element Analysis

Hashemi,

Baghaei,

Fathi

et al. 2023

Eur J Dent

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Objectives Using finite element analysis (FEA), this study aimed to determine the effect of nonrigid connectors (NRCs) and their position on the success of tooth and implant-supported fixed prostheses in the maxillary posterior region. Materials and Methods Three three-dimensional FEA models were designed, presuming maxillary second premolar and first molar to be extracted. Implant (replacing first molar), abutment, bone (spongious and cortical), first premolar (containing dentin, root cement, gutta-percha, and casting post and core), periodontal ligament, and three three-unit cemented porcelain-fused-to-metal prostheses (a rigid one and two nonrigid) were modeled. The NRC was once on the tooth side and once on the implant side. The prostheses were loaded twice. The first molar (180 N) and premolars (120 N) teeth were subjected to progressive vertical and oblique (12-degree) loads, and maximum von Mises stress and strain in teeth and connectors were calculated for each model. Results The findings of the current study showed evidence that tooth-implant design with an NRC has significantly increased the average stress in the tooth. The average stress in dentin was 769.02 for the mesial connector and 766.95 for the distal connector, and this was only 731.59 for rigid connector. Furthermore, it was observed that rigid connector has considerably minimized the stress within the tooth–implant-supported fixed partial denture. The average stress for the crown and metal frame is 346.22 and 526.41 in rigid connector, while it is 1,172.9 and 2,050.9 for the nonrigid mesial connector. Conclusion Although distal NRC was more efficient than mesial NRC, using NRC will only reduce the stress applied to cortical bone and is not recommended in the posterior region of the maxilla.

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Mechanical considerations for the implant tooth-supported fixed partial denture. J Prosthet Dent 1995;74

Cited by 2 publications

References 0 publications

Biomechanical effects of splint types on traumatized tooth: a photoelastic stress analysis

Biomechanical effects of splint types on traumatized tooth: a photoelastic stress analysis

Stress Analysis of Endodontically Treated Tooth–Implant Different Connectors Designs in Maxillary Posterior Region: A Finite Element Analysis

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