Clinical Concerns Regarding Dentition and Connections to Osseointegrated Implants: A Systematic Review of Implant Restoration Trends and Treatment of Partial Edentulism

Hamed, Mohamed Tharwat; Mously, Hisham Abdullah; Hashem, Abou Bakr Hossam; Naguib, Ghada Hussein

doi:10.1615/jlongtermeffmedimplants.2019032582

Cited by 3 publications

(2 citation statements)

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“…Therefore, the movement of natural teeth is more flexible than implant movement in the horizontal direction, and the proximal contact loss and diastema more likely involve the mesial aspect of implant restoration. Dörfer et al (2000) reported that natural teeth move and the proximal contact strength between teeth is regarded as a physiologic entity of multifactorial origin because proximal contact is significantly influenced by location, tooth type, chewing, and time of day variation; however, implants are relatively stable (Saito et al, 2020;Hamed et al, 2019). Therefore, the mesial movement differences between implants and natural teeth are related to proximal contact loss of implant restoration at the mesial site (Wei et al 2008).…”

Section: Resultsmentioning

confidence: 99%

Clinical assessment of food impaction after implant restoration: a retrospective analysis

Wang

Zhang

et al. 2021

Food Sci. Technol

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Material and methods 2.1 Selection of study samples This study was approved by the Research Ethics Committee of our university. Patients who underwent implant fixed restoration and follow-up evaluations for 3-36 months from January 2015 to December 2018 at the Oral Hospital of our university were recruited for this study. Informed consent was obtained from all patients. Three dental implant systems with diameters of 3.6-5 mm, lengths of 7-13 mm, and a repair procedure for a single or consecutive crown were purchased from ITI (Straumann AG, Waldenburg, Switzerland), Bego (Bremen, Germany), and Dentium Co. (Seoul, Korea). Patient samples were selected based on the following inclusion criteria: 1. Implant procedure and prostheses had already been performed. 2. Implant prostheses were only supported by implants. 3. Implant status was regularly reviewed by clinicians and patients were in good compliance. 4. Good proximal contact and healthy adjacent teeth were confirmed after the implant procedure. The exclusion criteria were as follows: 1. evidence of severe periodontal disease; 2. edentulous jaw with implant

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Section: Resultsmentioning

confidence: 99%

Clinical assessment of food impaction after implant restoration: a retrospective analysis

Wang

Zhang

et al. 2021

Food Sci. Technol

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“…It is widely accepted that the hybrid fixed tooth‐implant prosthesis is less than ideal due to the disparity of support between the natural tooth and implant fixture. However, in certain situations such as when there is a need to preserve the papilla, maintain proprioception, avoid cantilever design, when some anatomical limitations are present (proximity of the mental foramen or maxillary sinus, lack of enough bone support for implant placement), or even failure to obtain patient's consent for bone augmentation surgery, the use of this type of hybrid prosthesis might be one of the viable treatments considered 3 . Moreover utilizing tooth‐implant connections means less number of implant abutments used thus lower treatment costs which can be a limitation put forth by economically disadvantaged patients.…”

Section: Materials Modulus Of Elasticity (Mpa) Poisson's Ratiomentioning

confidence: 99%

Effect of non‐rigid connector on the stress distribution of tooth‐implant supported fixed prostheses using different implant length and diameter: A comparative 3D finite element study

Naguib

Hashem

Abougazia³

et al. 2023

Journal of Prosthodontics

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Purpose To investigate the significance of the connector type on stress dissemination within the tooth‐implant‐supported fixed dental prostheses in the mandibular posterior region with different combinations of implant diameter and length by means of finite element analysis (FEA). Materials and Methods Six models of different designs for tooth‐implant fixed dental prosthesis (FDPs) were simulated and divided into two main groups. Implant lengths were 10, 11.5, and 13 mm while implant diameters were 3.7, 4.7, and 5.7 mm. The main difference between the groups was the connector type. Models were evaluated using 3D FEA (Solidworks Premium 2018 × 64 Edition). Group A tooth‐implant FDPs (5.7 mm × 10 mm) had a mesial and distal rigid connector while group B tooth‐implant FDPs (3.7 mm × 10 mm, 3.7 mm × 11.5 mm, 3.7 mm × 13 mm, 4.7 mm × 10 mm and 5.7 mm × 10 mm) had a mesial non‐rigid connector in their design between the pontic and the tooth. Models were analyzed to determine the magnitude of von Misses Stresses at six specific zones (fixed dental prosthesis, bone around distal implant, bone around tooth, cementum, periodontal ligament, implant) under vertical occlusal loading of 100 N after meshing and assigning the material properties. Results Stress values around the supporting bone were significantly higher in Group B (tooth‐implant FDP with non‐rigid connection) when compared to Group A (tooth‐implant FDP with rigid connection). Also, the stresses measured at the FDP level showed that the rigid connection group (5.7 mm × 10 mm) exhibited 26% lower stress values when compared to the non‐rigid group (5.7 mm × 10 mm). Conclusions Implant‐tooth FDPs with rigid connector design using the combination of implant diameter and length (5.7 mm × 10 mm) demonstrated a better design modality thus predicting a higher success rate and more longevity than using the non‐rigid connection option.

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A New Multi-Axial Functional Stress Analysis Assessing the Longevity of a Ti-6Al-4V Dental Implant Abutment Screw

Naguib,

Abougazia,

Al-Turki

et al. 2024

Biomimetics

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This study investigates the impact of tightening torque (preload) and the friction coefficient on stress generation and fatigue resistance of a Ti-6Al-4V abutment screw with an internal hexagonal connection under dynamic multi-axial masticatory loads in high-cycle fatigue (HCF) conditions. A three-dimensional model of the implant–abutment assembly was simulated using ANSYS Workbench 16.2 computer aided engineering software with chewing forces ranging from 300 N to 1000 N, evaluated over 1.35 × 107 cycles, simulating 15 years of service. Results indicate that the healthy range of normal to maximal mastication forces (300–550 N) preserved the screw’s structural integrity, while higher loads (≥800 N) exceeded the Ti-6Al-4V alloy’s yield strength, indicating a risk of plastic deformation under extreme conditions. Stress peaked near the end of the occluding phase (206.5 ms), marking a critical temporal point for fatigue accumulation. Optimizing the friction coefficient (0.5 µ) and preload management improved stress distribution, minimized fatigue damage, and ensured joint stability. Masticatory forces up to 550 N were well within the abutment screw’s capacity to sustain extended service life and maintain its elastic behavior.

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Clinical Concerns Regarding Dentition and Connections to Osseointegrated Implants: A Systematic Review of Implant Restoration Trends and Treatment of Partial Edentulism

Cited by 3 publications

References 0 publications

Clinical assessment of food impaction after implant restoration: a retrospective analysis

Clinical assessment of food impaction after implant restoration: a retrospective analysis

Effect of non‐rigid connector on the stress distribution of tooth‐implant supported fixed prostheses using different implant length and diameter: A comparative 3D finite element study

A New Multi-Axial Functional Stress Analysis Assessing the Longevity of a Ti-6Al-4V Dental Implant Abutment Screw

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