TY  - JOUR
AU  - Ihde, Stefan
AU  - Goldmann, Tomas
AU  - Himmlova, Lucie
AU  - Aleksić, Zoran
PY  - 2008
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1433
AB  - Objective. The purpose of this study was to develop a model that accurately represents the interface between bone and basal implants throughout the healing process. Study Design. The model was applied to the biological scenario of changing load distribution in a basal implant system over time. We did this through finite element analysis (FEA, or finite element method [FEM]), using multiple models with changing bone-implant contact definitions, which reflected the dynamic nature of the interface throughout the bony healing process. Results. In the simple models, peak von Mises stresses decreased as the bone-implant-contact definition was changed from extremely soft contact (i.e., immature bone during early loading) to hard contact (i.e., mature bone). In upgraded models, which more closely approximate the biological scenario with basal dental implant, peak von Mises stresses decreased at the implant interface; however, they increased at the bone interface as a harder contact definition was modeled. Further, we found a shift in peak stress location within the implants during different contact definitions (i.e., different stages of bony healing). In the case of hard contact, the peak stress occurs above the contact surface, whereas in soft contact, the stress peak occurs in the upper part of the contact area between bone and the vertical shaft of the implant. Only in the extreme soft contact definitions were the peak stresses found near the base plate of the implant. Conclusion. Future FEM studies evaluating the functional role of dental implants should consider a similar model that takes into account bone tissue adaptations over time.
PB  - Mosby-Elsevier, New York
T2  - Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology
T1  - The use of finite element analysis to model bone-implant contact with basal implants
VL  - 106
IS  - 1
SP  - 39
EP  - 48
DO  - 10.1016/j.tripleo.2007.12.005
ER  - 

@article{
author = "Ihde, Stefan and Goldmann, Tomas and Himmlova, Lucie and Aleksić, Zoran",
year = "2008",
abstract = "Objective. The purpose of this study was to develop a model that accurately represents the interface between bone and basal implants throughout the healing process. Study Design. The model was applied to the biological scenario of changing load distribution in a basal implant system over time. We did this through finite element analysis (FEA, or finite element method [FEM]), using multiple models with changing bone-implant contact definitions, which reflected the dynamic nature of the interface throughout the bony healing process. Results. In the simple models, peak von Mises stresses decreased as the bone-implant-contact definition was changed from extremely soft contact (i.e., immature bone during early loading) to hard contact (i.e., mature bone). In upgraded models, which more closely approximate the biological scenario with basal dental implant, peak von Mises stresses decreased at the implant interface; however, they increased at the bone interface as a harder contact definition was modeled. Further, we found a shift in peak stress location within the implants during different contact definitions (i.e., different stages of bony healing). In the case of hard contact, the peak stress occurs above the contact surface, whereas in soft contact, the stress peak occurs in the upper part of the contact area between bone and the vertical shaft of the implant. Only in the extreme soft contact definitions were the peak stresses found near the base plate of the implant. Conclusion. Future FEM studies evaluating the functional role of dental implants should consider a similar model that takes into account bone tissue adaptations over time.",
publisher = "Mosby-Elsevier, New York",
journal = "Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology",
title = "The use of finite element analysis to model bone-implant contact with basal implants",
volume = "106",
number = "1",
pages = "39-48",
doi = "10.1016/j.tripleo.2007.12.005"
}

Ihde, S., Goldmann, T., Himmlova, L.,& Aleksić, Z.. (2008). The use of finite element analysis to model bone-implant contact with basal implants. in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology
Mosby-Elsevier, New York., 106(1), 39-48.
https://doi.org/10.1016/j.tripleo.2007.12.005

Ihde S, Goldmann T, Himmlova L, Aleksić Z. The use of finite element analysis to model bone-implant contact with basal implants. in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology. 2008;106(1):39-48.
doi:10.1016/j.tripleo.2007.12.005 .

Ihde, Stefan, Goldmann, Tomas, Himmlova, Lucie, Aleksić, Zoran, "The use of finite element analysis to model bone-implant contact with basal implants" in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology, 106, no. 1 (2008):39-48,
https://doi.org/10.1016/j.tripleo.2007.12.005 . .

TY  - JOUR
AU  - Ihde, Stefan
AU  - Goldmann, Tomas
AU  - Himmlova, Lucie
AU  - Aleksić, Zoran
AU  - Kuzelka, Jiri
PY  - 2008
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1425
AB  - Aims: Bone structure around basal implants shows a dual healing mode: direct contact areas manifest primary osteonal remodeling, in the void osteotomy-induced spaces, the repair begins with woven bone formation. This woven bone is later converted into osteonal bone. The purpose of this study was to develop a model to accurately represent the interface between bone and basal implant throughout the healing process. The model was applied to the biological scenario of changing load distribution in a basal implant system over time. Methods: Computations were made through finite element analysis using multiple models with changing bone-implant contact definitions which reflected the dynamic nature of the interface throughout the bony healing process. Five stages of bony healing were calculated taking into account the changes in mineral content of bone in the vicinity of the load transmitting implant surfaces. Results: As the bony integration of basal implants proceeds during healing, peak stresses within the metal structure shift geographically. While bony repair may still weaken osteonal bone, woven bone has already matured. This leads to changes in the load distribution between and within the direct contact areas, and bone areas which make later contact with implant. Conclusions: This study shows that basal implants undergo an intrinsic shift of maximum stress regions during osseointegration. Fatigue testing methods in the case of basal implants must therefore take into account this gradual shift from early healing phase until full osseointegration is achieved.
PB  - Palacky Univ, Medical Fac, Olomouc
T2  - Biomedical Papers - Olomouc
T1  - Implementation of contact definitions calculated by fea to describe the healing process of basal implants
VL  - 152
IS  - 1
SP  - 169
EP  - 173
DO  - 10.5507/bp.2008.028
ER  - 

@article{
author = "Ihde, Stefan and Goldmann, Tomas and Himmlova, Lucie and Aleksić, Zoran and Kuzelka, Jiri",
year = "2008",
abstract = "Aims: Bone structure around basal implants shows a dual healing mode: direct contact areas manifest primary osteonal remodeling, in the void osteotomy-induced spaces, the repair begins with woven bone formation. This woven bone is later converted into osteonal bone. The purpose of this study was to develop a model to accurately represent the interface between bone and basal implant throughout the healing process. The model was applied to the biological scenario of changing load distribution in a basal implant system over time. Methods: Computations were made through finite element analysis using multiple models with changing bone-implant contact definitions which reflected the dynamic nature of the interface throughout the bony healing process. Five stages of bony healing were calculated taking into account the changes in mineral content of bone in the vicinity of the load transmitting implant surfaces. Results: As the bony integration of basal implants proceeds during healing, peak stresses within the metal structure shift geographically. While bony repair may still weaken osteonal bone, woven bone has already matured. This leads to changes in the load distribution between and within the direct contact areas, and bone areas which make later contact with implant. Conclusions: This study shows that basal implants undergo an intrinsic shift of maximum stress regions during osseointegration. Fatigue testing methods in the case of basal implants must therefore take into account this gradual shift from early healing phase until full osseointegration is achieved.",
publisher = "Palacky Univ, Medical Fac, Olomouc",
journal = "Biomedical Papers - Olomouc",
title = "Implementation of contact definitions calculated by fea to describe the healing process of basal implants",
volume = "152",
number = "1",
pages = "169-173",
doi = "10.5507/bp.2008.028"
}

Ihde, S., Goldmann, T., Himmlova, L., Aleksić, Z.,& Kuzelka, J.. (2008). Implementation of contact definitions calculated by fea to describe the healing process of basal implants. in Biomedical Papers - Olomouc
Palacky Univ, Medical Fac, Olomouc., 152(1), 169-173.
https://doi.org/10.5507/bp.2008.028

Ihde S, Goldmann T, Himmlova L, Aleksić Z, Kuzelka J. Implementation of contact definitions calculated by fea to describe the healing process of basal implants. in Biomedical Papers - Olomouc. 2008;152(1):169-173.
doi:10.5507/bp.2008.028 .

Ihde, Stefan, Goldmann, Tomas, Himmlova, Lucie, Aleksić, Zoran, Kuzelka, Jiri, "Implementation of contact definitions calculated by fea to describe the healing process of basal implants" in Biomedical Papers - Olomouc, 152, no. 1 (2008):169-173,
https://doi.org/10.5507/bp.2008.028 . .