Photoelastic Analysis of Fixed Partial Prosthesis Crown Height and Implant Length on Distribution of Stress in Two Dental Implant Systems

The aim of this study was to evaluate by photoelastic analysis stress distribution on short and long implants of two dental implant systems with 2-unit implant-supported fixed partial prostheses of 8 mm and 13 mm heights. Sixteen photoelastic models were divided into 4 groups: I: long implant (5×11 mm) (Neodent), II: long implant (5×11 mm) (Bicon), III: short implant (5×6 mm) (Neodent), and IV: short implants (5×6 mm) (Bicon). The models were positioned in a circular polariscope associated with a cell load and static axial (0.5 Kgf) and nonaxial load (15°, 0.5 Kgf) were applied to each group for both prosthetic crown heights. Three-way ANOVA was used to compare the factors implant length, crown height, and implant system (α=0.05). The results showed that implant length was a statistically significant factor for both axial and nonaxial loading. The 13 mm prosthetic crown did not result in statistically significant differences in stress distribution between the implant systems and implant lengths studied, regardless of load type (P>0.05). It can be concluded that short implants showed higher stress levels than long implants. Implant system and length was not relevant factors when prosthetic crown height were increased.

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Photoelastic analysis of fixed partial prosthesis crown height and implant length on distribution of stress in two dental implant systems

10.47749/t/unicamp.2013.903917 ◽

2013 ◽

Author(s):

Evandro Portela Figueirêdo

Keyword(s):

Dental Implant ◽

Crown Height ◽

Photoelastic Analysis ◽

Distribution Of Stress ◽

Implant Length

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EFFECTS OF DENTAL IMPLANT LENGTH AND BONE QUALITY ON BIOMECHANICAL RESPONSES IN BONE AROUND IMPLANTS: A 3-D NON-LINEAR FINITE ELEMENT ANALYSIS

Biomedical Engineering Applications Basis and Communications ◽

10.4015/s1016237205000081 ◽

2005 ◽

Vol 17 (01) ◽

pp. 44-49 ◽

Cited By ~ 19

Author(s):

CHUN-LI LIN ◽

YU-CHAN KUO ◽

TING-SHENG LIN

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Dental Implant ◽

Bone Quality ◽

Cancellous Bone ◽

Alveolar Bone ◽

Element Analysis ◽

Linear Finite Element ◽

Implant System ◽

Implant Length

The aim of this study was to evaluate the influence of implant length and bone quality on the biomechanical aspects in alveolar bone and dental implant using non-linear finite element analysis. Two fixture lengths (8 and 13mm) of Frialit-2 root-form titanium implants were buried in 4 types of bone modeled by varying the elastic modulus for cancellous bone. Contact elements were used to simulate the realistic interface fixation within the implant system. Axial and lateral (buccolingual) loadings were applied at the top of the abutment to simulate the occlusal forces. The simulated results indicated that the maximum strain values of cortical and cancellous bone increased with lower bone density. In addition, the variations of cortical bony strains between 13mm and 8mm long implants were not significantly as a results of the same contact areas between implant fixture and cortical bone were found for different implant lengths. Lateral occlusal forces significantly increased the bone strain values when compared with axial occlusal forces regardless of the implant lengths and bone qualities. Loading conditions were found as the most important factor than bone qualities and implant lengths affecting the biomechanical aspects for alveolar bone and implant systems. The simulated results implied that further understanding of the role of occlusal adjustment influencing the loading directions are needed and might affect the long-term success of an implant system.

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Evaluation of biomechanical and stress distribution of different dental implant designs: Primary stability and photoelastic analysis

IRBM ◽

10.1016/j.irbm.2021.01.003 ◽

2021 ◽

Author(s):

J.D.C. Tardelli ◽

M.L. da Costa Valente ◽

A.P. Macedo ◽

A.C. dos Reis

Keyword(s):

Stress Distribution ◽

Dental Implant ◽

Primary Stability ◽

Photoelastic Analysis

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The Effect of Dental Implant Length and Diameter on the Stress Distribution at the Implant-Bone Interface of the Immediate Loading Implants: A 3/D Finite Element Analysis

Al-Rafidain Dental Journal ◽

10.33899/rden.2012.84678 ◽

2012 ◽

Vol 13 (1) ◽

pp. 44-51

Author(s):

Talal Mohamad ◽

Umer Al-Adel ◽

Eissa Wahbeh

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Stress Distribution ◽

Dental Implant ◽

Immediate Loading ◽

Element Analysis ◽

Bone Interface ◽

Implant Length

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Contour changes of peri-implant tissues are minimal and similar for a one- and a two-piece implant system over 12 years

Clinical Oral Investigations ◽

10.1007/s00784-020-03638-1 ◽

2020 ◽

Author(s):

Miha Pirc ◽

Oliver Harbeck ◽

Vitor M. Sapata ◽

Jürg Hüsler ◽

Ronald E. Jung ◽

...

Keyword(s):

Soft Tissue ◽

Dental Implant ◽

Clinical Relevance ◽

Crown Height ◽

Long Run ◽

Time Period ◽

Tissue Changes ◽

Bone Level ◽

Soft Tissue Changes ◽

Implant System

Abstract Objectives To assess contour changes of peri-implant tissues comparing a one- and a two-piece dental implant system over 12 years. Materials and methods Patients seeking implant therapy were enrolled and randomly allocated to receive implants (a one-piece (STM) or a two-piece (BRA) system). Impressions were taken at the time of insertion of the final reconstruction (BL), after 1 year (FU-1), 5 years (FU-5), and at 12 years (FU-12). Thirty patients were included in the analysis (STM, 16; BRA, 14). Digital scans of casts were superimposed and analyzed in an image analysis program. Measurements included changes of the crown height, contour changes on the buccal side of the implants and the contralateral teeth (control). Results Contour changes at implant sites revealed a loss of − 0.29 mm (STM) and − 0.46 mm (BRA) during an observation period of 12 years. Contour changes at the corresponding tooth sites amounted to − 0.06 mm (STM) and − 0.12 mm (BRA) during the same time period. The implant crown gained 0.25 mm (STM) and 0.08 mm (BRA) in height due to recession of the marginal mucosa. The corresponding gain in crown height at the contralateral tooth sites amounted to 0.36 mm (STM) and 0.10 mm (BRA). Interproximal marginal bone level changes measured − 0.28 mm (STM) and − 1.11 mm (BRA). The mean BOP amounted to 38.8% (STM) and 48.7% (BRA) at the 12-year follow-up (FU-12). Conclusion Minimal changes of the peri-implant soft tissue contour were observed at implant sites over the period of 12 years irrespective of the use of a one- or a two-piece implant system. The differences between the implant sites and corresponding teeth were clinically negligible. Clinical relevance Peri-implant soft tissue stability is of high clinical relevance when monitoring dental implant sites on the long run. Clinical data on the extent of soft tissue changes around different implant systems are scarce. The present RCTs demonstrate minimal changes of the peri-implant soft tissue contour 12 years after implant insertion independent of the use of a one- or a two-piece implant system.

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Effects of Custom-Made and Thread Dental Implant Systems on the Stress Distribution in Alveolar Bone: A 3-Dimensional Finite Element Analysis

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.475-476.1487 ◽

2013 ◽

Vol 475-476 ◽

pp. 1487-1493 ◽

Cited By ~ 1

Author(s):

Xiao Zhang ◽

Zhan Gong Xie ◽

Wei Feng ◽

Xian Shuai Chen ◽

Jian Yu Chen

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Stress Distribution ◽

Dental Implant ◽

Alveolar Bone ◽

Element Analysis ◽

Custom Made ◽

Dimensional Finite Element ◽

Stress And Deformation ◽

Implant System

Aiming to investigate the effects of custom-made and thread dental implant systems on the stress distribution in alveolar bone using linear analysis of the finite element method (FEM). Two types of systems: the custom-made implant and the thread dental implant system, were studied using a three-dimensional finite element analysis (3D FEA). Comparing the parts of all systems for loading in different directions, the stress and deformation distribution in custom-made implant and alveolar bone are better than that in thread dental implant system. The analysis data definitely demonstrated the difference in stress and deformation distribution of components in different dental implant systems. Results show the custom-made implants are provided with more advantages and can be used in future experiment and clinical test.

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