Survival rates and prosthetic complications of implant fixed complete dental prostheses: An up to 5-year retrospective study

Chochlidakis, Konstantinos; Einarsdóttir, Erna Rún; Tsigarida, Alexandra; Papaspyridakos, Panos; Romeo, Davide; Barmak, Abdul Basir; Ercoli, Carlo

doi:10.1016/j.prosdent.2019.11.022

Cited by 48 publications

(65 citation statements)

References 22 publications

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“…However, the meta‐analysis pooled data from both partially and completely edentulous patients. 15 With the percentage of older patients as well as the incidence of edentulous patients rising, coupled with the increase of life expectancy, the need of fixed implant rehabilitation for the growing edentulous population is constantly increasing 24‐26 . Additionally, there is a demand to simplify the fixed implant rehabilitation protocol, to reduce biologic and technical complications and morbidity, and to shorten treatment time for this population 27‐30 .…”

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confidence: 99%

Accuracy of Guided Implant Surgery in 25 Edentulous Arches: A Laboratory Observational Study

Yehuda

Weber

Finkelman

et al. 2020

Journal of Prosthodontics

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Purpose: To assess the accuracy of template-guided implant surgery for edentulous arches. Materials and Methods: The stone master casts of 25 edentulous arches treated with either 4 or 6 implants with CBCT generated template-guided surgery were included in this observational cohort study. The stone casts generated from the surgical templates (group one) prior to implant placement were digitized into Standard Tesselation (STL) files with a reference scanner. For comparison, the stone master casts derived from intraoral complete-arch impressions after implant placement (group two) were also digitized. The resultant STL files were superimposed and best-fit-alignment algorithm was used to quantify the 3D deviations present between the two groups. Descriptive statistics were computed for all categorical variables. Due to the presence of nonindependent samples between maxillary and mandibular casts, a mixed-effects model was used. Results: Deviations between the implant analogs of the stone casts representing digitally planned versus actually placed implants were found. The mean root-meansquare error (RMSE) between all 25 arches was found to be 0.2 mm (SD ± 0.15). The mean RMSE between presurgical and postsurgical maxillary stone casts were 0.19 ± 0.15 mm, while between mandibular stone casts were 0.21 ± 0.16 mm and were not significant (p = 0.67). The mean RMSE between presurgical and postsurgical stone casts arches with 4 versus 6 implants were found to be significant (p = 0.01). Conclusions: According to the results of the study and based on the amount of 3D deviations between the digitally planned implant positions and the actually placed implants, template-guided surgery is a safe treatment modality for implant placement in edentulous arches.

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confidence: 99%

Accuracy of Guided Implant Surgery in 25 Edentulous Arches: A Laboratory Observational Study

Yehuda

Weber

Finkelman

et al. 2020

Journal of Prosthodontics

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“…However, the mechanical mismatch between the solid titanium and the surrounding bone tissue creates a stress shielding effect, complicating the process of osseointegration and bone remodeling. Although their short-term results were satisfactory with a 5-year success rate as high as 90%, the long-term results were still not satisfactory [ 4 ]. Thus, a new implant design was deemed necessary.…”

Section: Introductionmentioning

confidence: 99%

“…Titanium (Ti) has exhibited low density, high mechanical strength, and good biocompatibility. However, the elastic modulus values of human bones (cortical bones, 10–20 GPa; cancellous bones, 1.5–2.5 GPa) are considerably lower than those of commercial titanium implants (approximately 110 GPa), which is over ten times that of bone [ 4 ]. According to Wolff's law, commercial titanium implants will result in bone resorption and atrophy around the implant, ultimately leading to implant mobility and failure [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

In Vivo and In Vitro Analyses of Titanium‐Hydroxyapatite Functionally Graded Material for Dental Implants

Wang

Wan

Feng

et al. 2021

BioMed Research International

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Purpose. The stress shielding effect caused due to the mechanical mismatch between the solid titanium and the surrounding bone tissue warrants the utilization of a mechanically and biologically compatible material such as the titanium-hydroxyapatite (Ti-HA) functionally graded material (FGM) for dental implants. This study is aimed at fabricating a Ti-HA FGM with superior mechanical and biological properties for dental implantation. Materials and Methods. We fabricated a Ti-HA FGM with different Ti volume fractions (VFs) using HA and Ti powders. Ti-HA was characterized by studying its mechanical properties. Cytotoxicity was examined using a Cell Counting Kit-8 assay and an LDH cell cytotoxicity assay. Scanning electron microscopy was performed on an XL30 environmental scanning electron microscope (ESEM). Alkaline phosphatase (ALP) and transforming growth factor (TGF-β1) expressions were quantitatively monitored using enzyme-linked immunosorbent assay (ELISA) kits. The expressions of TGF-β receptors and ALP genes were measured using real-time polymerase chain reaction. The Ti-HA FGM dental implants were placed in beagle dogs. Microcomputed tomography (CT) and hard tissue slices were performed to evaluate the bone-implant contact (BIC) and bone volume over total volume (BV/TV). Results. The density and mechanical properties of the Ti-HA exhibited various graded distributions corresponding to VF. Based on the results of the Cell Counting Kit-8 (CCK-8) and lactate dehydrogenase (LDH) assays, the difference in cytotoxicity between the two groups was statistically nonsignificant ( P = 0.11 ). The ALP and TGF-β1 levels were slightly upregulated. The transcript levels of ALP and TGF-βRI were higher in the Ti-HA groups than in the Ti group at 7 days, whereas the transcript levels of TGF-βRII exhibited no obvious increase. The BIC did not exhibit significant differences between the Ti and Ti-HA FGM groups ( P = 0.0504 ). BV/TV showed the Ti-HA FGM group had better osteogenesis ( P = 0.04 ). Conclusion. Ti-HA FGM contributes to the osteogenesis of dental implants in vivo and in vitro.

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“…The mechanical complications of dental implants include fracture or loosening of the abutment and abutment screw and implant fracture. Studies have shown that the long-term incidence of mechanical complications of implants ranges from 21% to 31% and is greatly affected by the structural design of the implant [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Loading Angles and Implant Lengths on the Static and Fatigue Fractures of Dental Implants

Sun

Cheng

et al. 2021

Materials

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Mechanical properties play a key role in the failure of dental implants. Dental implants require fatigue life testing before clinical application, but this process takes a lot of time. This study investigated the effect of various loading angles and implant lengths on the static fracture and fatigue life of dental implants. Implants with lengths of 9 mm and 11 mm were prepared. Static fracture tests and dynamic fatigue life tests were performed under three loading angles (30°, 40°, and 50°), and the level arm and bending moment were measured. After that, the fracture morphology and fracture mode of the implant were observed. The results showed that 9 mm length implants have a higher static failure load and can withstand greater bending moments, while 11 mm length implants have a longer fatigue life. In addition, as the loading angle increases, the static strength and bending moment decrease linearly, and the fatigue life shows an exponential decrease at a rate of three times. Increasing the loading angle reduces the time of the implant fatigue test, which may be an effective method to improve the efficiency of the experiment.

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Survival rates and prosthetic complications of implant fixed complete dental prostheses: An up to 5-year retrospective study

Cited by 48 publications

References 22 publications

Accuracy of Guided Implant Surgery in 25 Edentulous Arches: A Laboratory Observational Study

Accuracy of Guided Implant Surgery in 25 Edentulous Arches: A Laboratory Observational Study

In Vivo and In Vitro Analyses of Titanium‐Hydroxyapatite Functionally Graded Material for Dental Implants

Effect of Loading Angles and Implant Lengths on the Static and Fatigue Fractures of Dental Implants

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